Chint Low Voltage Electrical Technology Co., Ltd.

Zhejiang Chint Electrics Co., Ltd.

Noark Electrics (shanghai) Co. Ltd.

Seari Electric Technology Co., Ltd.

Noark Electrics Co. Ltd.

Denggui Ao

Hao Fu

Yongfu Xu

Lijun Yan

Xiaoqin Yuan

Yuming Duan

Dengyu Lu

Fang Tang

Shangjing Wei

Jinhua Xiong

An operating mechanism of a circuit breaker that includes a bracket, a rocker arm assembly, a jump buckle, a latch, a re-buckle, a first crank, a first spring and a first connecting rod, the jump buckle is in latching fit with the latch, and the re-buckle is in limiting fit with the latch; one end of the first crank is pivotally disposed on the jump buckle around a first axis, and the other end of the first crank is rotatably connected to one end of the first connecting rod around a second axis; the rocker arm assembly is driving fit with the first crank through the first spring; and slide rails disposed on the bracket and a slider slidably disposed on the slide rails, rotatably connected to the other end of the first connecting rod, and in driving fit with a moving contact mechanism of the circuit breaker.

Operating mechanism of circuit breaker

An operating mechanism of a circuit breaker, wherein two ends of a first spring are rotationally connected to a rocker arm assembly and a first crank through a first spring shaft and a second spring shaft respectively, and one end of a jump buckle is rotationally connected to a bracket and is a jump buckle pivoting end; a jump buckle hole of the jump buckle is aligned with a bracket hole of the bracket; the first spring shaft is in limiting fit with the jump buckle; and one end of the first crank swings in a direction away from the jump buckle pivoting end, such that a spacing between the first spring shaft and the second spring shaft is smaller than or equal to the length of the first spring, and a first assembly state is formed.

Operating mechanism of circuit breaker and assembling breaker

An operating mechanism of a circuit breaker, relating to the field of low-voltage electric appliances. The operating mechanism is provided with a double-slider mechanism, a first slider mechanism comprising a first crank, a first connecting rod, a sliding rail and a slider, and a second slider mechanism comprising a contact support, a second connecting rod, a sliding rail and a slider. The double-slider mechanism reduces the space requirement of the operating mechanism while increasing the opening distance of a moving contact, and the breaking performance is good. A circuit breaker comprising the operating mechanism, which provides good breaking performance.

Operating mechanism of circuit breaker, and circuit breaker

A moving contact mechanism with a contact support that rotates around a third axis, a moving contact pivotable around a contact axis, and both ends of the contact spring are a third end of the spring and a fourth end of the spring, respectively, which are rotatably connected to the moving contact and the contact support respectively. A geometric axis of the contact spring is a second axis line located on one side of the third axis when the moving contact is normally on or off. The contact spring keeps the moving contact in an on or off state. The moving contact rotates relative to the contact support when repelled, drives the contact spring to rotate around the fourth end of the spring, so that the second axis line swings to the other side of the third axis, and remains in a temporary breaking position.

Moving contact mechanism

A quick tripping device with a moving contact mechanism that includes a contact support and a moving contact. An operating mechanism is in driving connection with the moving contact mechanism, so that the moving contact and a static contact are switched on or off. A first push rod is pivotally disposed on the contact support with one end in driving fit with the moving contact, a driving gap is formed between the one end and the moving contact, and a first push rod driving end of the first push rod is in driving fit with the operating mechanism to trip the operating mechanism. When the moving contact is repelled, the moving contact rotates relative to the contact support through the driving gap, and then contacts with the first push rod driven end and drives the first push rod to rotate, so that the operating mechanism is tripped.

Quick tripping device and circuit breaker

A handle of a manual operation mechanism of a circuit breaker, which includes an operating handle, a padlock device, and a locking shaft, wherein a middle of the padlock device is pivotally arranged on the operating handle, a front end of the padlock device is connected with the locking shaft, the padlock device is connected with the operating handle through a first driving member, a rear end of the padlock device is in limit fit with a locking mechanism, a padlock hole is arranged in the rear end of the padlock device, and the padlock hole is shielded by the operating handle.

Handle of manual operation mechanism of circuit breaker

A direct-acting electromagnetic trip device including a housing, and a regulation mechanism, a linkage mechanism, an electromagnetic system and a trip mechanism which are arranged in the housing. The regulation mechanism is connected with the linkage mechanism, the linkage mechanism is connected with one end of an iron core of the electromagnetic system, and the linkage mechanism is connected with the trip mechanism at the same time. The regulation mechanism includes a rotary knob and a regulation rod, wherein the rotary knob is abutted against and engaged with the regulation rod, and the regulation rod is abutted against and engaged with the linkage mechanism. The electromagnetic system further includes an elastic element that pushes the iron core to allow the linkage mechanism to be abutted against the regulation rod and allow the rotary knob to be abutted against the regulation rod.

Direct-acting electromagnetic trip device

A short-circuit protection action current adjusting method and a device thereof for a multi-pole electromagnetic release. An electromagnetic system includes an auxiliary static iron core, a second static iron core, a coil, a reset spring and a dynamic iron core; at an initial position, a first gap is formed between the auxiliary static iron core and the dynamic iron core, a second gap is formed between the dynamic iron core and the second static iron core, and the thickness of the second gap changes in the same direction along with the size variation of a release threshold; the elastic force of the reset spring changes oppositely along with the size variation of the release threshold; when a release current value is adjusted from large to small, the coil energy reduces in a quadratic relationship mode along with flowing currents and meanwhile the electromagnetic attraction between the dynamic iron core and the second static iron core is increased in a quadratic relationship mode, which is in inverse proportion to reduction of the thickness of the second gap. According to the short-circuit protection action current adjusting method and device thereof for the multi-pole electromagnetic release, adjustment of the release current value and electromagnetic attraction required by actions of the dynamic iron core are in a linear fixed corresponding relationship due to automatically achieved balance between two quadratic functions, and adjustment of the release threshold through the user is convenient, reliable and stable.

Short-current protection action current adjusting method and device thereof and device for multi-pole electromagnetic release

The present invention discloses a multi-pole circuit breaker with auxiliary supports, which comprises a base, a plurality of single-pole circuit breaking units, an operating mechanism and a rotation axis assembly, wherein the rotation axis assembly consists of a plurality of supporting assemblies and a plurality of support shaft parts in series; each of the support shaft parts is provided with a movable contact bridge; each of the supporting assembly consists of a rotation axis, an auxiliary support, an auxiliary support bearing and at least one supporting rod; the rotation axis maintains synchronous revolution with the support shaft parts; the outside of the bearing is tightly assembled with a bearing hole of the auxiliary support, while the inside is tightly assembled with the rotation axis; the supporting rod is tightly assembled with a supporting rod installing hole on the auxiliary support; the operating mechanism is fixedly connected with the supporting rod; and the supporting rod is fixedly installed on a housing of the single-pole circuit breaking unit and provides stable supporting force for the rotation axis through the auxiliary supports. The multi-pole circuit breaker has balanced contact pressure at each contact point, flexible operation, fast breaking, good breaking synchronism of contacts at all poles and long service life.

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Shanghai, China

Denggui Ao