WO2021243877A1 - 一种双金属片可调式断路器 - Google Patents

一种双金属片可调式断路器 Download PDF

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Publication number
WO2021243877A1
WO2021243877A1 PCT/CN2020/114682 CN2020114682W WO2021243877A1 WO 2021243877 A1 WO2021243877 A1 WO 2021243877A1 CN 2020114682 W CN2020114682 W CN 2020114682W WO 2021243877 A1 WO2021243877 A1 WO 2021243877A1
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WO
WIPO (PCT)
Prior art keywords
bimetallic
bimetallic strip
circuit breaker
wiring board
conductive rod
Prior art date
Application number
PCT/CN2020/114682
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English (en)
French (fr)
Inventor
夏初阳
Original Assignee
新驰电气集团有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 新驰电气集团有限公司 filed Critical 新驰电气集团有限公司
Publication of WO2021243877A1 publication Critical patent/WO2021243877A1/zh

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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
    • 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
    • H01H71/08—Terminals; Connections
    • 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
    • H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
    • H01H71/7427—Adjusting only the electrothermal mechanism
    • H01H71/7436—Adjusting the position (or prestrain) of the bimetal

Definitions

  • the invention relates to a bimetallic adjustable circuit breaker, belonging to the technical field of circuit breakers.
  • the circuit breaker has short-circuit protection and overload protection.
  • the short-circuit protection is realized by the coil and the moving iron core.
  • Most of the overload protection uses the heat generated by the bimetallic sheet under the passing current to drive the bimetallic sheet to bend, push the trip link and drive the lock, and the product trips after the lock and the trip are separated to complete the overload protection.
  • the action time of the product is related to the initial position of the bimetallic strip and the trip link, the energizing current, the temperature and the tripping force. After the temperature, tripping force and energizing current are controlled, the consistency of the initial position of the bimetallic strip and the tripping connecting rod becomes the key to the qualified delay time of the product.
  • the current market practice is basically to turn the adjustment screw while the current is flowing, and when the product is approaching the specified time, turn it off. In this way, whether the twisting distance is too much or suitable when the product is moving can only be found by doing it again, and the pass rate is related to the employee's hand feeling and proficiency; the other way is to close the product and then turn it on when the product is not powered on. Adjust the screw, let the bimetallic plate push the tripping link to trip, and then reverse the adjustment screw to the specified number of turns. This method requires pretreatment and requires the arc ignition plate to have good flexibility, otherwise the adjustment screw is reversed. After the product is released, the adjustment screw does not touch the bimetallic strip, which causes the bimetallic strip to be in a free state, which affects the product's delayed action time.
  • the present invention proposes a design that uses a conductive rod and a wiring board to match the signal generated by the contact with the conductive rod after the adjustment of the bimetallic sheet, so that the adjusting screwdriver stops rotating and determines the initial The position of the bimetallic adjustable circuit breaker.
  • a bimetallic adjustable circuit breaker of the present invention includes a base, and a bimetal is installed in the base, and the lower end of the bimetal is equipped with a pilot arc plate on one side and an adjusting screw on the other side.
  • An adjustment screwdriver is arranged on the outer side of the adjusting screw, the upper end of the bimetallic strip is close to the tripping link, the tripping link is connected to the lock, and the middle section of the bimetallic strip is equipped with a wiring board on the rear side, The wiring board is equipped with conductive rods to pass through.
  • a through hole is opened on the wiring board, and the conductive rod is placed inside through the through hole.
  • the bimetallic strip drives the trip link and the lock to achieve tripping.
  • the back end of the conductive rod is connected with an output device.
  • the output device can be a signal that can be detected such as light, sound, and current. Through the feedback of the signal of the output device, the adjusting screwdriver can stop working to realize the double The initial position of the metal sheet is positioned.
  • the adjusting screw moves inward through the action of the adjusting screwdriver, touching the bimetallic strip, and causing the bimetallic strip to move.
  • the adjusting screwdriver can be an automatic device or a manual device. When a feedback signal is detected, it is stop working.
  • the present invention has the following beneficial effects:
  • the present invention adopts the design of the conductive rod and the wiring board to determine the depth of L, and the signal generated by the contact with the conductive rod after the adjustment of the bimetallic strip makes Adjust the screwdriver to stop rotating and determine the initial position, so as to improve the product delay qualification rate and production efficiency.
  • Figure 1 is a schematic diagram of the structure of a bimetallic adjustable circuit breaker of the present invention.
  • Figure 2 is a schematic diagram of the wiring board structure of a bimetallic adjustable circuit breaker of the present invention.
  • Figure 3 is an application diagram of a bimetallic adjustable circuit breaker of the present invention.
  • a bimetallic adjustable circuit breaker includes a base.
  • the upper end of the base 11 is equipped with a handle 1, and a connecting rod 2 is connected to the handle 1, and a jumper is installed above the connecting rod 2.
  • Buckle 3 a lock 4 is installed on one side of the connecting rod 2
  • a trip link 5 is installed below the lock 4
  • a bimetal 6 is placed on one side of the trip link 5, the bimetal
  • One side of the lower end of the sheet 6 is equipped with an arc-igniting plate 9 and an adjusting screw 8 is installed on the other side.
  • the adjusting screw 8 is provided with an adjusting screwdriver 13 outside of the adjusting screw 8, and a wiring board 12 is installed on the rear side of the middle section of the bimetallic sheet 6.
  • a conductive rod 7 is installed in the wiring board 12 to pass through, and a movable contact 10 is provided above the arc-igniting board 9.
  • the wiring board 12 is provided with a through hole, and the conductive rod 7 is placed inside through the through hole.
  • the bimetal 6 drives the trip link 5 and the lock buckle 4 to achieve tripping.
  • the back end of the conductive rod 7 is connected with an output device.
  • the adjusting screw 8 moves inward through the action of the adjusting screwdriver 13, and touches the bimetal 6 to make the bimetal 6 move.
  • the invention adopts the design of the conductive rod and the wiring board to determine the depth of L, and the signal generated by the contact with the conductive rod after the adjustment of the bimetallic sheet stops the rotation of the adjusting screwdriver and determines the initial position, thereby improving the product delay qualification rate and Productivity.

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  • Breakers (AREA)

Abstract

一种双金属片可调式断路器，包括底座（11），所述的底座（11）内装有双金属片（6），该双金属片（6）下端一侧装有引弧板（9），另一侧装有调节螺丝（8），所述的调节螺丝（8）外侧设有调节螺丝刀（13），所述的双金属片（6）上端与脱扣连杆（5）相近，该脱扣连杆（5）连接于锁扣（4）上，所述的双金属片（6）中段后侧装有接线板（12），该接线板（12）内装有导电棒（7）通过；采用导电棒（7）与接线板（12）配合设计，确定L的深度，根据双金属片（6）调节后与导电棒（7）接触的位置，使调节螺丝刀（13）停止转动，从而提高产品延时合格率及生产效率。

Description

一种双金属片可调式断路器 技术领域
本发明涉及一种双金属片可调式断路器，属于断路器技术领域。
 背景技术
断路器具有短路保护和过载保护，短路保护由线圈配合动铁芯实现。过载保护大部分采用双金属片在通过电流下产生的热量驱使双金属片弯曲，推动脱扣连杆及带动锁扣，锁扣和跳扣分离后产品跳闸，完成过载保护。产品的动作时间与双金属片和脱扣连杆的初始位置、通电电流、温度和脱扣力相关。在温度、脱扣力和通电电流的情况得到控制后，双金属片与脱扣连杆的初始位置一致性成为产品延时动作时间合格的关键。现在市面上做法基本是一边电流一边拧调节螺丝，在产品快到规定的时间时，将其拧跳。该种方式在产品动作时拧跳的距离是否过多或者合适只有再做一次才能发现，且合格率与员工手感和熟练程度相关；另一种方式为在产品未通电时将产品合闸然后拧调节螺丝，让双金属片推动脱扣连杆跳闸后，再将调节螺丝反向拧规定的圈数，这个方法需要做预处理以及需要引弧板具有很好的弹性，否则调节螺丝反向拧出后后出现调节螺丝与双金属片不接触，导致双属片是自由状态，影响产品延时动作时间。
 技术问题
要解决的技术问题 ：为解决上述问题，本发明提出了一种采用导电棒与接线板配合设计，通过双金属片调节后与导电棒接触所产生的信号，使调节螺丝刀停止转动，确定好初始位置的双金属片可调式断路器。
技术解决方案
技术方案：本发明的一种双金属片可调式断路器，包括底座，所述的底座内装有双金属片，该双金属片下端一侧装有引弧板，另一侧装有调节螺丝，所述的调节螺丝外侧设有调节螺丝刀，所述的双金属片上端与脱扣连杆相近，该脱扣连杆连接于锁扣上，所述的双金属片中段后侧装有接线板，该接线板内装有导电棒通过。
进一步地，所述的接线板上开有通孔，通过该通孔使导电棒放置于内部。
进一步地，所述的双金属片带动脱扣连杆和锁扣，实现脱扣。
进一步地，所述的导电棒后端连接装有输出设备，该输出设备可以是光，声音，电流等可以被检测出的信号，通过该输出设备信号的反馈，使调节螺丝刀停止工作，实现双金属片的初始位置定位。
进一步地，所述的调节螺丝通过调节螺丝刀的作用向内运动，触及双金属片，使双金属片进行动作，所述的调节螺丝刀可为自动设备或者手动设备，检测到反馈的信号时，即停止工作。
 有益效果
有益效果：本发明与现有技术相比较，其具有以下有益效果：本发明采用导电棒与接线板配合设计，确定L的深度，通过双金属片调节后与导电棒接触所产生的信号，使调节螺丝刀停止转动，确定好初始位置，从而提高产品延时合格率及生产效率。
 附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本发明一种双金属片可调式断路器的结构示意图。
图2是本发明一种双金属片可调式断路器的接线板结构示意图。
图3是本发明一种双金属片可调式断路器的应用图。
1、手柄，2、连杆，3、跳扣，4、锁扣，5、脱扣连杆，6、双金属片，7、导电棒，8、调节螺丝，9、引弧板，10、动触头，11、底座，12、接线板,13、调节螺丝刀。
 本发明的最佳实施方式
如附图所示的一种双金属片可调式断路器，包括底座，所述的底座11上端装有手柄1，该手柄1上连接有连杆2，所述的连杆2上方装有跳扣3，所述的连杆2一侧装有锁扣4，该锁扣4下方装有脱扣连杆5，所述的脱扣连杆5一侧放置有双金属片6，该双金属片6下端一侧装有引弧板9，另一侧装有调节螺丝8，所述的调节螺丝8外侧设有调节螺丝刀13，所述的双金属片6中段后侧装有接线板12，该接线板12内装有导电棒7通过，所述的引弧板9上方设有动触头10。
其中，所述的接线板12上开有通孔，通过该通孔使导电棒7放置于内部。
所述的双金属片6带动脱扣连杆5和锁扣4，实现脱扣。
所述的导电棒7后端连接装有输出设备。
所述的调节螺丝8通过调节螺丝刀13的作用向内运动，触及双金属片6，使双金属片6进行动作。
本发明采用导电棒与接线板配合设计，确定L的深度，通过双金属片调节后与导电棒接触所产生的信号，使调节螺丝刀停止转动，确定好初始位置，从而提高产品延时合格率及生产效率。
上面所述的实施例仅仅是对本发明的优选实施方式进行描述，并非对本发明的构思和范围进行限定。在不脱离本发明设计构思的前提下，本领域普通人员对本发明的技术方案做出的各种变型和改进，均应落入到本发明的保护范围，本发明请求保护的技术内容，已经全部记载在权利要求书中。

Claims (5)

  1. 一种双金属片可调式断路器，包括底座，其特征在于：所述的底座（11）内装有双金属片（6），该双金属片（6）下端一侧装有引弧板（9），另一侧装有调节螺丝（8），所述的调节螺丝（8）外侧设有调节螺丝刀（13），所述的双金属片（6）上端与脱扣连杆（5）相近，该脱扣连杆（5）连接于锁扣（4）上，所述的双金属片（6）中段后侧装有接线板（12），该接线板（12）内装有导电棒（7）通过。
  2. 根据权利要求1所述的一种双金属片可调式断路器，其特征在于：所述的接线板（12）上开有通孔。
  3. 根据权利要求1所述的一种双金属片可调式断路器，其特征在于：所述的双金属片（6）带动脱扣连杆（5）和锁扣（4），实现脱扣。
  4. 根据权利要求1所述的一种双金属片可调式断路器，其特征在于：所述的导电棒（7）后端连接装有输出设备。
  5. 根据权利要求1所述的一种双金属片可调式断路器，其特征在于：所述的调节螺丝（8）通过调节螺丝刀（13）的作用向内运动，触及双金属片（6），使双金属片（6）进行动作。
PCT/CN2020/114682 2020-06-03 2020-09-11 一种双金属片可调式断路器 WO2021243877A1 (zh)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111627770A (zh) * 2020-06-03 2020-09-04 新驰电气集团有限公司 一种双金属片可调式断路器
CN113125950B (zh) * 2021-04-29 2023-04-14 上海西门子线路保护系统有限公司 断路器双金属片的调节测试方法和装置
CN113745019A (zh) * 2021-08-30 2021-12-03 上海电科臻和智能科技有限公司 一种带双重脱扣机构的后备保护器

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CN206353510U (zh) * 2016-11-30 2017-07-25 浙江正泰电器股份有限公司 断路器延时校验壳体结构
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