阅读说明：本技术 塑壳断路器 (Plastic case circuit breaker ) 是由 支朝乾 于 2020-12-31 设计创作，主要内容包括：本发明涉及一种塑壳断路器,底座底部形成一个高起的高台,高台上开设有高台固定孔,动触头转动架上形成动触头固定孔,接线板内端伸入动触头转动架的动触头固定孔上方,接线板内端也形成接线固定孔,设置螺丝从底座外向内拧入依次穿过高台固定孔、动触头固定孔、接线固定孔,使动触头转动架、接线板内端固定在高台上,接线板的中部下侧悬空,动触头铰接在动触头转动架上,本发明只需要更换接线板就能使塑壳断路器实现不同方式的保护功能,底座和动触头等部件均可通用,通用性高,可减小模具成本和库存成本。(The invention relates to a molded case circuit breaker, wherein a raised plateau is formed at the bottom of a base, a plateau fixing hole is formed on the plateau, a moving contact fixing hole is formed on a moving contact rotating frame, the inner end of a wiring board extends into the position above the moving contact fixing hole of the moving contact rotating frame, a wiring fixing hole is also formed at the inner end of the wiring board, a screw is arranged to be screwed in from the outside of the base and sequentially penetrates through the plateau fixing hole, the moving contact fixing hole and the wiring fixing hole, the moving contact rotating frame and the inner end of the wiring board are fixed on the plateau, the lower side of the middle part of the wiring board is suspended, and a moving contact is hinged on the moving contact rotating frame.)

1. The utility model provides a moulded case circuit breaker, includes base and the moving contact, moving contact rotating turret, wiring board and the static contact of setting in the base, its characterized in that: form the baffle of separating moving contact and static contact in the base, set up the contact groove that stretches into by supplying the moving contact in the middle of the baffle, the base bottom of moving contact one side forms a high platform that rises, the high platform fixed orifices has been seted up on the high platform, form the moving contact fixed orifices on the moving contact rotating turret, the moving contact fixed orifices top of moving contact rotating turret is stretched into to the wiring board inner, the wiring board inner also forms the wiring fixed orifices, it twists from the base outwards inwards and passes high platform fixed orifices in proper order to set up the screw, the moving contact fixed orifices, the wiring fixed orifices, make the moving contact rotating turret, the wiring board inner is fixed on the high platform, the middle part downside of wiring board is unsettled, the moving contact.

2. The molded case circuit breaker according to claim 1, wherein: an opening is formed between the side surface of the high platform facing the wiring board and the bottom of the base.

Technical Field

The present invention relates to a molded case circuit breaker.

Background

The molded case circuit breaker uses a plastic insulator as a shell of the device, and can automatically cut off current after the actual current exceeds a trip set value. The existing molded case circuit breakers can be divided into electronic molded case circuit breakers and thermomagnetic molded case circuit breakers according to an overcurrent protection mode, bases and conductive elements of the existing two short circuiters cannot be universal, two sets of dies are needed in production, and the development cost of the dies is high.

Disclosure of Invention

In view of the above, an object of the present invention is to provide a molded case circuit breaker with strong versatility, which can be used for producing electronic circuit breakers and thermomagnetic circuit breakers.

In order to achieve the above purpose, the invention adopts a molded case circuit breaker, which comprises a base, a movable contact rotating frame, a wiring board and a fixed contact, wherein the movable contact, the movable contact rotating frame, the wiring board and the fixed contact are arranged in the base, form the baffle of separating moving contact and static contact in the base, set up the contact groove that stretches into by supplying the moving contact in the middle of the baffle, the base bottom of moving contact one side forms a high platform that rises, the high platform fixed orifices has been seted up on the high platform, form the moving contact fixed orifices on the moving contact rotating turret, the moving contact fixed orifices top of moving contact rotating turret is stretched into to the wiring board inner, the wiring board inner also forms the wiring fixed orifices, it twists from the base outwards inwards and passes high platform fixed orifices in proper order to set up the screw, the moving contact fixed orifices, the wiring fixed orifices, make the moving contact rotating turret, the wiring board inner is fixed on the high platform, the middle part downside of wiring board is unsettled, the moving contact.

The invention is further arranged that an opening is formed between the side of the plateau facing the terminal block and the bottom of the base.

The invention has the advantages that the high platform is formed on the base, the moving contact rotating frame is directly fixed on the high platform, the wiring board is fixed on the moving contact rotating frame through the screw outside the base, the installation and the disassembly are convenient, because the circuit breaker of the thermomagnetic type overcurrent protection and the electronic type overcurrent protection is mainly realized by installing the bimetal or the current transformer in the middle of the wiring board, the plastic shell circuit breaker can realize the protection function in different modes only by replacing the wiring board, the base, the moving contact and other parts can be universal, the universality is high, and the mold cost and the inventory cost can be reduced.

Drawings

FIG. 1 is a cross-sectional view of an embodiment of the present invention.

FIG. 2 is a schematic view of a base according to an embodiment of the present invention.

Detailed Description

As shown in fig. 1 and 2, a specific embodiment of the present invention is a molded case circuit breaker, including a base 1, a moving contact 2, a moving contact rotating frame 3, a wiring board 4 and a static contact 5, which are arranged in the base 1, a partition 11 for separating the moving contact 2 and the static contact 5 is formed in the base 1, a contact slot 12 for the moving contact 2 to extend into is arranged in the middle of the partition 11, a raised plateau 13 is formed at the bottom of the base 1 at one side of the moving contact 2, a plateau fixing hole 14 is formed on the plateau 13, a moving contact fixing hole 31 is formed on the moving contact rotating frame 3, the inner end of the wiring board 4 extends into the upper part of the moving contact fixing hole 31 of the moving contact rotating frame 3, a wiring fixing hole 41 is also formed at the inner end of the wiring board 4, a screw 6 is screwed in from the outside to the inside of the base 1 and sequentially passes through the plateau fixing hole 14, the moving contact fixing hole 31 and, an opening 15 is formed between the side surface of the high platform 13 facing to the wiring board 4 and the bottom of the base 1, the lower side of the middle part of the wiring board 4 is suspended, the space on the lower side of the wiring board 4 is communicated with the opening 15, and the moving contact 3 is hinged on the moving contact rotating frame 4.

The above examples should not be construed as limiting the present invention, but any modifications made based on the spirit of the present invention should be within the scope of protection of the present invention.