WO2017167085A1 - 控制与保护开关电器的内部反馈装置 - Google Patents

控制与保护开关电器的内部反馈装置 Download PDF

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Publication number
WO2017167085A1
WO2017167085A1 PCT/CN2017/077635 CN2017077635W WO2017167085A1 WO 2017167085 A1 WO2017167085 A1 WO 2017167085A1 CN 2017077635 W CN2017077635 W CN 2017077635W WO 2017167085 A1 WO2017167085 A1 WO 2017167085A1
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WO
WIPO (PCT)
Prior art keywords
contact
static
internal feedback
feedback device
bracket
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Application number
PCT/CN2017/077635
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English (en)
French (fr)
Inventor
李思泓
贾峰
奚泓
郑捷欣
黄悲鸣
曾萍
张地
Original Assignee
上海电科电器科技有限公司
浙江正泰电器股份有限公司
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Application filed by 上海电科电器科技有限公司, 浙江正泰电器股份有限公司 filed Critical 上海电科电器科技有限公司
Publication of WO2017167085A1 publication Critical patent/WO2017167085A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers

Definitions

  • This invention relates to the field of low voltage electrical appliances and, more particularly, to a feedback device for a switchgear.
  • Control and protection switchgear is an important product in the field of low-voltage electrical appliances. It integrates the control and protection functions of switchgear, such as the combination of circuit breakers, contactors and thermal relays. It can be an integral switchgear or it can be Consists of discrete components. The integrated switchgear of this type has the advantages of small size and strong function.
  • auxiliary device typically designed as an auxiliary module type, mounted on the side of the switching device or outside the casing, or built into the interior of the switching device and can be used to indicate the state of the switching device.
  • auxiliary devices such as circuit breakers are typically associated with the state of their main contacts for indicating states such as on, off, and trip.
  • the auxiliary device of the contactor is typically associated with the state of its operating electromagnet for indicating the opening and breaking of the contactor.
  • the auxiliary device installed on the outside of the switch device needs to be connected and fixed in addition to the state of the associated contact, so that the volume thereof is large, and the corresponding number of components is also large, even if the auxiliary device is installed in the internal space of the switch.
  • Most of them are modular types, which are driven by a lever structure and occupy a large space.
  • As a monolithic control and protection switching device since the signal source that needs to be transmitted is distributed on different levels, it is often caused in the design that the wiring is long and the connection is inconvenient.
  • the invention provides an internal feedback device for controlling and protecting a switch electrical appliance, comprising: a bracket, a contact support member, a static contact bracket assembly and a casing, wherein the contact support member is installed in the bracket, and the contact support member has a movable contact
  • the static contact holder group has a static contact, the movable contact and the static contact form a contact group, and the bracket, the contact support member and the static contact holder group are housed in the outer casing.
  • the contact support member has a switching mechanism, and the switching mechanism extends outside the outer casing, and the contact support member is moved by the switching structure, Change the state of the contact set.
  • the contact support member is mounted with a movable contact bridge set, a movable contact spring, and a main spring.
  • the contact support member has a plurality of movable contact slots, and the movable contact bridge group and the movable contact spring are installed in the movable contact slot, and each of the movable contact slots is provided with a movable contact bridge, and the movable contact bridge is installed under the movable contact bridge.
  • the head spring has a moving contact on the movable contact bridge; the bottom of the contact support has a main spring.
  • the set of stationary contact brackets are disposed along an outer wall of the bracket, the plurality of sets of stationary contact brackets having different heights, each of the stationary contact brackets having a stationary contact.
  • the height of each of the static contact holder groups respectively corresponds to the position of one of the dynamic contact bridges, and the static contacts on one of the static contact holder groups and the movable contacts on one of the movable contact bridges form a pair of contact groups.
  • the internal feedback device for controlling and protecting the switching device is mounted on the main control board, which also has an actuator and a terminal.
  • the actuator drives the switching mechanism to move the contact holder to change the state of the contact set.
  • the signal terminal block realizes the working status signal, and the operation terminal block realizes the on-off operation.
  • the actuator is disengaged at the switching mechanism, the internal feedback device is in an on state, and the set of contacts is closed.
  • the actuator rotates the lower pressing switching mechanism to press the contact support member to the first height, the internal feedback device is in the tripping state, the contact group is disconnected, and the tripping distance is maintained between the movable contact and the stationary contact.
  • the actuator rotates the lower pressure switching mechanism to press the contact support member to the second height.
  • the internal feedback device is in a closed state, the contact group is disconnected, and the open contact distance is maintained between the movable contact and the static contact.
  • the closing opening distance is greater than the trip opening distance.
  • the actuator is coupled to the operating mechanism via a gear mechanism.
  • the internal signal feedback device for controlling and protecting the switchgear of the present invention adopts direct-coupled feedback, which is different from the commonly used lever structure, and is arranged inside the switch electrical appliance, so as to achieve a small volume, which is convenient for wiring and reduces the transmission link. Directly associated with the actuator to increase the reliability of the transmitted signal.
  • FIG. 1 discloses a mounting structure diagram of an internal feedback device for controlling and protecting a switching device in accordance with an embodiment of the present invention.
  • FIGS. 2a and 2b illustrate exploded structural views of an internal feedback device for controlling and protecting a switching device in accordance with an embodiment of the present invention.
  • FIG. 3 discloses a usage state diagram of an internal feedback device for controlling and protecting a switching device in accordance with an embodiment of the present invention.
  • FIG. 4 illustrates a structure in which an internal feedback device for controlling and protecting a switching device is in an on state, in accordance with an embodiment of the present invention.
  • Figure 5 illustrates a structure in which the internal feedback device of the control and protection switchgear is in a tripped state in accordance with an embodiment of the present invention.
  • Figure 6 illustrates a structure in which the internal feedback device of the control and protection switchgear is in a closed state, in accordance with an embodiment of the present invention.
  • the invention provides an internal feedback device for controlling and protecting a switch electrical appliance, comprising: a bracket, a contact support member, a static contact bracket group, a movable contact bridge group, a movable contact spring and a main spring.
  • the contact support member has a plurality of movable contact slots, and the movable contact bridge group and the movable contact spring are installed in the movable contact slot, and each of the movable contact slots is provided with a movable contact bridge, and the movable contact bridge is installed under the movable contact bridge.
  • Head spring The movable contact bridge has moving contacts.
  • the contact support has a switching mechanism that cooperates with the actuator to change the state of the contact set.
  • the bottom of the contact support has a main spring.
  • the contact support is located within the bracket.
  • the static contact bracket group is arranged along the outer wall of the bracket, and the plurality of static contact bracket groups may have different heights, and each of the static contact brackets has a static contact.
  • the height of each of the static contact bracket sets corresponds to the position of one of the dynamic contact bridges, respectively.
  • Static contact on a static contact bracket set and on a moving contact bridge The moving contact forms a pair of contact sets.
  • the bracket and the contact support member and the movable contact group accommodated therein are mounted on the main control board together with the externally arranged static contact holder group.
  • the housing shields the bracket, the contact support, the movable contact set and the fixed contact bracket set to form an internal feedback device.
  • the housing is provided with a slot for the switching mechanism to extend outside the housing to cooperate with the actuator, and the switching mechanism has sufficient space to move to complete the switching.
  • the internal feedback device is directly mounted on the main control board and is located inside the switchgear. In terms of transmission, the actuator on the main control board is directly connected to the operating mechanism through the gear structure. Without the lever structure, the transmission is more reliable and the volume is smaller.
  • the actuator adjusts the position of the contact holder by the switching mechanism and the main spring to change the state of the contact. Terminal blocks are also integrated on the main control board.
  • Figure 1 discloses a mounting structure of an internal feedback device for controlling and protecting a switching device in accordance with an embodiment of the present invention.
  • 2a and 2b illustrate exploded structural views of an internal feedback device for controlling and protecting a switching device in accordance with an embodiment of the present invention.
  • FIG. 2a discloses the structure of the contact holder, the static contact holder group, the movable contact bridge group, the movable contact spring, the main spring and the switching mechanism after removing the outer casing.
  • Figure 2b shows a block diagram of the internal feedback device after assembly of the housing.
  • the contact support member 102 has a plurality of moving contact slots therein. In the illustrated embodiment, there are two moving contact slots on the contact support member 102.
  • the movable contact bridge group and the movable contact spring are installed in the movable contact slot, and one movable contact bridge is installed in each movable contact slot, and the movable contact spring is installed under the movable contact bridge.
  • two movable contact bridges a first dynamic contact bridge 106 and a second dynamic contact bridge 107 are mounted in two movable contact slots on the contact support member 102, respectively.
  • the first movable contact bridge 106 is mounted in the upper movable contact slot, and the first movable contact spring 109 is mounted below the first movable contact bridge 106.
  • the second movable contact bridge 107 is mounted in the lower movable contact slot, and the second movable contact spring 110 is mounted below the second movable contact bridge 107.
  • Each of the first movable bridge 106 and the second movable bridge 107 has a movable contact, which is shown as a wafer-shaped contact at both ends of the movable contact bridge.
  • the first movable contact spring 109 and the second movable contact spring 110 respectively apply an upward spring force to the first movable contact bridge 106 and the second movable contact bridge 107, so that the movable contact bridge is always lifted up to the movable contact slot.
  • the bottom of the contact holder 102 has a main spring 111.
  • the contact support member 102 has a switching mechanism 121, and the switching mechanism 121 is located on one side of the contact support member 102, and the switching mechanism 121 is A bump that extends outward.
  • the switching mechanism 121 cooperates with the actuator 103 (refer to FIG. 1) to change the state of the contact set, which will be described in detail later.
  • the contact support member, the static contact holder group, the movable contact bridge group, the movable contact spring and the main spring are all located in the bracket 101, but the bracket 101 is not a closed structure.
  • the first moving bridge 106 and the second moving bridge 107 extending from the bracket 101 can still be seen in 1.
  • a static contact bracket set is disposed on the outer side of the bracket 101, and the stationary contacts are arranged along the outer wall of the bracket.
  • two sets of static contact brackets are disposed: a first fixed contact bracket set 105 and a second fixed contact bracket set 104, the first fixed contact bracket set 105 is higher, the second static The contact carrier set 104 is lower.
  • the static contact holder has a static contact.
  • the height of the stationary contact holder group corresponds to the position of a moving contact bridge, respectively.
  • the first static contact bracket group 105 includes two separate brackets on two sides.
  • the second static contact bracket group 104 also includes two separate brackets on both sides to interact with the movable contact bridge.
  • the movable contacts on the upper two sides cooperate.
  • the first static contact holder group 105 corresponds to the first dynamic contact bridge 106
  • the second static contact holder group 104 corresponds to the second dynamic contact bridge 107.
  • the static contact holder group is bent at a height corresponding to the movable contact bridge and extends laterally, and has a wafer-shaped contact as a static contact on the bottom surface of the bent portion.
  • the static contacts on one of the stationary contact carrier sets and the movable contacts on one of the dynamic contact bridges form a pair of contact sets.
  • the first stationary contact carrier set 105 and the first dynamic contact bridge 106 form a first contact set
  • the second fixed contact support set 104 and the second movable contact bridge 107 form a second contact set.
  • the bracket 101 and the contact support member and the movable contact group housed therein are mounted on the main control board 108 together with the externally arranged static contact holder group.
  • the outer casing 112 shields the bracket 101, the contact support member 102, the movable contact set and the fixed contact bracket set to form an internal feedback device, as shown in Fig. 2b.
  • the housing 112 has a slot on one side of the corresponding switching mechanism 121.
  • the slot for the switching mechanism 121 extends out of the housing 112 to cooperate with the actuator 103.
  • the slot allows the switching mechanism 121 to have sufficient space to move. Complete the switch.
  • FIG. 3 discloses a usage state diagram of an internal feedback device for controlling and protecting a switching device in accordance with an embodiment of the present invention.
  • an internal feedback device 116, an actuator 103, a message terminal 114, and an operation terminal 115 are mounted on the main control board 108.
  • Both ends of the actuator 103 have a gear structure, and the gear structure 131 of the first end of the actuator is used for the switching mechanism 121 cooperation.
  • the gear structure 132 of the second end of the actuator is used in conjunction with the gear 113 in the operating mechanism. As shown in the figure, the gear structure 132 of the second end of the actuator engages with the gear 113 of the operating mechanism.
  • the main control board 108 may be in the form of a circuit board such that the static contact set is directly soldered to the main control board 108.
  • the main control board 108 is also integrated with terminal blocks including a message terminal 114 and an operation terminal 115.
  • the signal terminal 114 realizes the working status signal, and the operation terminal 115 realizes the on-off operation.
  • FIG. 4 to 6 are structural views showing an operational state of an internal feedback device for controlling and protecting a switchgear according to an embodiment of the present invention.
  • 4 is a structure in an ON state
  • FIG. 5 is a structure in a trip state (TRIP)
  • FIG. 6 is a structure in a OFF state (OFF).
  • the internal feedback device is in an ON state.
  • the actuator 103 is separated from the switching mechanism 121, and the switching mechanism 121 is not subjected to the pressure of the actuator 103.
  • the contact holder 102 Under the action of the main spring 111, the contact holder 102 as a whole is lifted upward.
  • the first movable contact bridge 106 and the second touch bridge 107 are maintained at the top of the movable contact slot.
  • the first movable contact bridge 106 is in contact with the first fixed contact holder group 105, the second movable contact bridge 107 and the second fixed contact holder group 104, and the first contact group and the second contact group remain in a closed state.
  • the message terminal 114 and the operation terminal 115 perform corresponding signals and operations.
  • the internal feedback device is in a tripped (TRIP) state.
  • the actuator 103 is rotated by the gear 113 shown in FIG. 3 (shown as clockwise rotation), and the actuator 103 comes into contact with the switching mechanism 121 to press the switching mechanism 121 downward.
  • the contact support 102 is depressed to a first height.
  • the first dynamic contact bridge 106 is separated from the first stationary contact carrier group 105, the second dynamic contact bridge 107 and the second stationary contact carrier group 104, and is maintained at the tripping distance. Both the first contact set and the second contact set are disconnected.
  • the message terminal 114 and the operation terminal 115 perform corresponding signals and operations.
  • the internal feedback device is in an OFF state.
  • the actuator 103 continues to rotate on the basis of FIG. 5 under the driving of the gear 113 shown in FIG. 3 (illustrated to continue clockwise rotation), and the actuator 103 further presses the switching mechanism 121 downward.
  • the contact support 102 is depressed to a second height.
  • the first movable contact bridge 106 is separated from the first fixed contact bracket set 105, the second movable contact bridge 107 and the second fixed contact bracket set 104, and is maintained at a closed open distance. Comparing Fig. 5 and Fig. 6, it can be seen that the distance between the contact groups for closing the opening distance is greater than the distance for the tripping distance. Both the first contact set and the second contact set are disconnected.
  • the message terminal 114 and the operation terminal 115 perform corresponding signals and operations.
  • the internal signal feedback device for controlling and protecting the switchgear of the present invention adopts direct-coupled feedback, which is different from the commonly used lever structure, and is arranged inside the switch electrical appliance, so as to achieve a small volume, which is convenient for wiring and reduces the transmission link. Directly associated with the actuator to increase the reliability of the transmitted signal.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Slide Switches (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

一种控制与保护开关电器的内部反馈装置，包括：支架（101）、触头支持件（102）、静触头支架组（104，105）和外壳，触头支持件（102）安装在支架（101）内，触头支持件（102）上具有动触头，静触头支架组（104，105）上具有静触头，动触头和静触头形成触头组，支架（101）、触头支持件（102）、静触头支架组（104，105）容纳于外壳内。触头支持件（102）上具有切换机构（121），切换机构（121）延伸至外壳外，通过切换结构带动触头支持件（102）移动，改变触头组的状态。该装置采用直联式反馈，不同于通常采用的杠杆结构，布置在开关电器的内部，目的是实现小体积，使得接线方便，减少传动环节，同时与执行机构直接相关联，增加传递信号的可靠性。

Description

控制与保护开关电器的内部反馈装置 技术领域
本发明涉及低压电器领域，更具体地说，涉及开关电器的反馈装置。
背景技术
控制与保护开关电器是低压电器领域的一种重要产品，该产品集成了开关电器的控制与保护功能，例如断路器、接触器和热继电器的组合，可以是整体式的开关电器，也可以是由分立器件组成。整体式的这类开关电器具有体积小、功能强的优点。
通常该类开关装置带有辅助装置，其辅助装置通常设计成辅助模块型式，装在开关装置的侧边或外壳外，也可内置在开关装置的内部，可用于指示开关装置的状态。例如断路器的辅助装置通常与其主触头的状态相关联，用于指示接通、分断和脱扣等状态。接触器的辅助装置通常与其操作电磁铁的状态相关联，用于指示接触器的接通和分断。现有技术安装在开关装置外侧的辅助装置，除关联触头状态外，还需连接和固定，因此其体积均较大，相应的零部件数量也较多，即使安装于开关内部空间的辅助装置，大都是模块的型式，采用杠杆结构传动，占用的空间均较大。作为整体式的控制与保护开关电器，由于其需要传输的信号源分布在不同层面上，因此在设计中往往会造成布线较长，连接不便的缺陷。
发明内容
本发明提出一种控制与保护开关电器的内部反馈装置，包括：支架、触头支持件、静触头支架组和外壳，触头支持件安装在支架内，触头支持件上具有动触头，静触头支架组上具有静触头，动触头和静触头形成触头组，支架、触头支持件、静触头支架组容纳于外壳内。触头支持件上具有切换机构，切换机构延伸至外壳外，通过切换结构带动触头支持件移动， 改变触头组的状态。
在一个实施例中，触头支持件上安装有动触桥组、动触头弹簧、主弹簧。触头支持件上具有数个动触头槽，动触桥组和动触头弹簧安装在动触头槽中，每一个动触头槽中安装一个动触桥，动触桥下方安装动触头弹簧；动触桥上具有动触头；触头支持件的底部具有主弹簧。
在一个实施例中，静触头支架组沿着支架的外壁布置，数个静触头支架组具有不同的高度，每一个静触头支架上具有静触头。每一个静触头支架组的高度分别与一个动触桥的位置对应，一个静触头支架组上的静触头和一个动触桥上的动触头形成一对触头组。
在一个实施例中，控制与保护开关电器的内部反馈装置安装在主控板上，主控板上还具有执行机构和接线端子。
在一个实施例中，执行机构驱动所述切换机构，带动触头支持件移动，改变触头组的状态。信报接线端子实现工作状态信报，操作接线端子实现通断操作。
在一个实施例中，执行机构于切换机构分离，该内部反馈装置处于接通状态，触头组闭合。执行机构转动下压切换机构，下压触头支持件至第一高度，该内部反馈装置处于脱扣状态，触头组断开，动触头和静触头之间保持脱扣开距。执行机构转动下压切换机构，下压触头支持件至第二高度，该内部反馈装置处于关闭状态，触头组断开，动触头和静触头之间保持关闭开距。
在一个实施例中，关闭开距大于脱扣开距。
在一个实施例中，执行机构通过齿轮机构连接到操作机构。
本发明的控制与保护开关电器的内部信号反馈装置，采用直联式反馈，不同于通常采用的杠杆结构，布置在开关电器的内部，目的是实现小体积，使得接线方便，减少传动环节，同时与执行机构直接相关联，增加传递信号的可靠性。
附图说明
本发明上述的以及其他的特征、性质和优势将通过下面结合附图和实施例的描述而变的更加明显，在附图中相同的附图标记始终表示相同的特征，其中：
图1揭示了根据本发明的一实施例的控制与保护开关电器的内部反馈装置的安装结构图。
图2a和图2b揭示了根据本发明的一实施例的控制与保护开关电器的内部反馈装置的分解结构图。
图3揭示了根据本发明的一实施例的控制与保护开关电器的内部反馈装置的使用状态图。
图4揭示了根据本发明的一实施例的控制与保护开关电器的内部反馈装置处于接通状态的结构。
图5揭示了根据本发明的一实施例的控制与保护开关电器的内部反馈装置处于脱扣状态的结构。
图6揭示了根据本发明的一实施例的控制与保护开关电器的内部反馈装置处于关闭状态的结构。
具体实施方式
本发明提出一种控制与保护开关电器的内部反馈装置，包括：支架、触头支持件、静触头支架组，动触桥组、动触头弹簧、主弹簧。触头支持件上具有数个动触头槽，动触桥组和动触头弹簧安装在动触头槽中，每一个动触头槽中安装一个动触桥，动触桥下方安装动触头弹簧。动触桥上具有动触头。触头支持件上具有切换机构，切换机构与执行机构配合以改变触头组的状态。触头支持件的底部具有主弹簧。触头支持件位于支架内。静触头支架组沿着支架的外壁布置，数个静触头支架组可以具有不同的高度，每一个静触头支架上具有静触头。每一个静触头支架组的高度分别与一个动触桥的位置对应。一个静触头支架组上的静触头和一个动触桥上的 动触头形成一对触头组。支架以及其内部容纳的触头支持件和动触头组，外部布置的静触头支架组一起安装在主控板上。外壳遮蔽上述的支架、触头支持件、动触头组和静触头支架组，形成内部反馈装置。需要说明的是，外壳上开有槽，供切换机构伸出外壳外与执行机构配合，切换机构具有足够的空间能移动以完成切换。该内部反馈装置直接安装在主控板上，位于开关电器的内部。在传动方面，位于主控板上的执行机构直接通过齿轮结构于操作机构连接，不使用杠杆结构，传动更加可靠，体积也更小。执行机构通过切换机构和主弹簧一起调节触头支持件的位置，改变触头状态。主控板上还集成有接线端子。
参考图1、图2a和图2b，图1揭示了根据本发明的一实施例的控制与保护开关电器的内部反馈装置的安装结构图。图2a和图2b揭示了根据本发明的一实施例的控制与保护开关电器的内部反馈装置的分解结构图。其中图2a揭示了除去外壳后触头支持件、静触头支架组，动触桥组、动触头弹簧、主弹簧和切换机构的结构。图2b揭示了装配外壳后该内部反馈装置的结构图。如图2a所示，触头支持件102上具有数个动触头槽，在图示的实施例中，在触头支持件102上具有两个动触头槽。动触桥组和动触头弹簧安装在动触头槽中，每一个动触头槽中安装一个动触桥，动触桥下方安装动触头弹簧。在图示的实施例中，两个动触桥：第一动触桥106和第二动触桥107分别安装在触头支持件102上的两个动触头槽中。第一动触桥106安装在上方的动触头槽中，第一动触桥106的下方安装有第一动触头弹簧109。第二动触桥107安装在下方的动触头槽中，第二动触桥107的下方安装有第二动触头弹簧110。第一动触桥106和第二动触桥107上各自具有动触头，在图中显示为位于动触桥两端的圆片状的触点。第一动触头弹簧109和第二动触头弹簧110分别向第一动触桥106和第二动触桥107施加向上的弹簧力，使得动触桥始终被顶升至动触头槽的顶部的位置。触头支持件102的底部具有主弹簧111。触头支持件102具有切换机构121，切换机构121位于触头支持件102的一个侧面上，切换机构121是 向外延伸的凸块。切换机构121与执行机构103(参考图1)配合以改变触头组的状态，后面会详细描述。
参考图1，图2a所示的触头支持件、静触头支架组，动触桥组、动触头弹簧和主弹簧都是位于支架101内，但支架101并不是封闭的结构，从图1中依旧可以看到从支架101中伸出的第一动触桥106和第二动触桥107。支架101的外侧布置有静触头支架组，静触头沿着支架的外壁布置。在图示的实施例中，布置有两个静触头支架组：第一静触头支架组105和第二静触头支架组104，第一静触头支架组105较高，第二静触头支架组104较低。静触头支架上具有静触头。静触头支架组的高度分别与一个动触桥的位置对应。需要说明的是，第一静触头支架组105包括位于两边的两个单独的支架，同样的，第二静触头支架组104也包括位于两边的两个单独的支架，以与动触桥上两边的动触头配合。第一静触头支架组105对应第一动触桥106，第二静触头支架组104对应第二动触桥107。如图所示，静触头支架组在与动触桥对应的高度弯折并横向延伸，在弯折部分的底面上具有圆片状的触点作为静触头。一个静触头支架组上的静触头和一个动触桥上的动触头形成一对触头组。第一静触头支架组105和第一动触桥106形成第一触头组，第二静触头支架组104和第二动触桥107形成第二触头组。如图1所示，支架101以及其内部容纳的触头支持件和动触头组，外部布置的静触头支架组一起安装在主控板108上。外壳112遮蔽上述的支架101、触头支持件102、动触头组和静触头支架组，形成内部反馈装置，如图2b所示。同样如图2b所示，外壳112上在对应切换机构121的一侧开有槽，槽供切换机构121伸出外壳112外与执行机构103配合，槽使得切换机构121具有足够的空间能移动以完成切换。
图3揭示了根据本发明的一实施例的控制与保护开关电器的内部反馈装置的使用状态图。如图3所示，主控板108上安装有内部反馈装置116、执行机构103、信报接线端子114和操作接线端子115。执行机构103的两端都具有齿轮结构，执行机构第一端的齿轮结构131用于与切换机构 121配合。执行机构第二端的齿轮结构132用于与操作机构中的齿轮113联动。如图所示，执行机构第二端的齿轮结构132与操作机构中的齿轮113咬合，齿轮113根据操作机构的动作转动后，带动齿轮结构132转动，进而带动齿轮结构131转动。齿轮结构131转动后，与切换机构121接触，通过调节触头支持件的位置来改变触头组的状态。主控板108可以是电路板的形式，这样静触头组直接焊接固定在主控板108上。主控板108上还集成有接线端子，包括信报接线端子114和操作接线端子115。信报接线端子114实现工作状态信报，操作接线端子115实现通断操作。
图4～图6揭示了根据本发明的一实施例的控制与保护开关电器的内部反馈装置的工作状态的结构图。其中图4所示的是处于接通状态(ON)的结构，图5是处于脱扣状态(TRIP)的结构，图6是关闭状态(OFF)的结构。
参考图4所示，内部反馈装置处于接通(ON)状态。在此状态下，执行机构103与切换机构121分离，切换机构121不受到执行机构103的压力。在主弹簧111的作用下，触头支持件102整体被向上方顶起。在动触头弹簧的作用下，第一动触桥106和第二触动桥107维持在动触头槽的顶部。第一动触桥106与第一静触头支架组105，第二动触桥107和第二静触头支架组104均接触，第一触头组和第二触头组保持闭合状态。信报接线端子114和操作接线端子115进行相应的信报和操作。
参考图5所示，内部反馈装置处于脱扣(TRIP)状态。在此状态下，执行机构103在图3所示的齿轮113的带动下转动(图示为顺时针转动)，执行机构103接触到切换机构121，将切换机构121向下压。克服主弹簧111的弹簧力，触头支持件102被下压至第一高度。第一动触桥106与第一静触头支架组105，第二动触桥107和第二静触头支架组104均分离，并且保持在脱扣开距。第一触头组和第二触头组都断开。信报接线端子114和操作接线端子115进行相应的信报和操作。
参考图6所示，内部反馈装置处于脱扣(OFF)状态。在此状态下， 执行机构103在图3所示的齿轮113的带动下在图5的基础上继续转动(图示为继续顺时针转动)，执行机构103将切换机构121进一步向下压。继续克服主弹簧111的弹簧力，触头支持件102被下压至第二高度。第一动触桥106与第一静触头支架组105，第二动触桥107和第二静触头支架组104均分离，并且保持在关闭开距。比较图5和图6可见，触头组之间关闭开距的距离大于脱扣开距的距离。第一触头组和第二触头组都断开。信报接线端子114和操作接线端子115进行相应的信报和操作。
本发明的控制与保护开关电器的内部信号反馈装置，采用直联式反馈，不同于通常采用的杠杆结构，布置在开关电器的内部，目的是实现小体积，使得接线方便，减少传动环节，同时与执行机构直接相关联，增加传递信号的可靠性。
上述实施例是提供给熟悉本领域内的人员来实现或使用本发明的，熟悉本领域的人员可在不脱离本发明的发明思想的情况下，对上述实施例做出种种修改或变化，因而本发明的保护范围并不被上述实施例所限，而应该是符合权利要求书提到的创新性特征的最大范围。

Claims (9)

  1. 一种控制与保护开关电器的内部反馈装置，其特征在于，包括：支架、触头支持件、静触头支架组和外壳，所述触头支持件安装在支架内，触头支持件上具有动触头，静触头支架组上具有静触头，动触头和静触头形成触头组，支架、触头支持件、静触头支架组容纳于外壳内；
    触头支持件上具有切换机构，切换机构延伸至外壳外，通过切换结构带动触头支持件移动，改变触头组的状态。
  2. 如权利要求1所述的控制与保护开关电器的内部反馈装置，其特征在于，所述触头支持件上安装有动触桥组、动触头弹簧、主弹簧；
    触头支持件上具有数个动触头槽，动触桥组和动触头弹簧安装在动触头槽中，每一个动触头槽中安装一个动触桥，动触桥下方安装动触头弹簧；动触桥上具有动触头；触头支持件的底部具有主弹簧。
  3. 如权利要求2所述的控制与保护开关电器的内部反馈装置，其特征在于，静触头支架组沿着支架的外壁布置，数个静触头支架组具有不同的高度，每一个静触头支架上具有静触头；
    每一个静触头支架组的高度分别与一个动触桥的位置对应，一个静触头支架组上的静触头和一个动触桥上的动触头形成一对触头组。
  4. 如权利要求3所述的控制与保护开关电器的内部反馈装置，其特征在于，所述触头组的数量为两个。
  5. 如权利要求3所述的控制与保护开关电器的内部反馈装置，其特征在于，所述控制与保护开关电器的内部反馈装置安装在主控板上，所述主控板上还具有执行机构和接线端子。
  6. 如权利要求3所述的控制与保护开关电器的内部反馈装置，其特征在于，
    所述执行机构驱动所述切换机构，带动触头支持件移动，改变触头组的状态；
    所述信报接线端子实现工作状态信报，所述操作接线端子实现通断操作。
  7. 如权利要求3所述的控制与保护开关电器的内部反馈装置，其特征在于，
    所述执行机构于切换机构分离，该内部反馈装置处于接通状态，触头组闭合；
    所述执行机构转动下压切换机构，下压触头支持件至第一高度，该内部反馈装置处于脱扣状态，触头组断开，动触头和静触头之间保持脱扣开距；
    所述执行机构转动下压切换机构，下压触头支持件至第二高度，该内部反馈装置处于关闭状态，触头组断开，动触头和静触头之间保持关闭开距。
  8. 如权利要求7所述的控制与保护开关电器的内部反馈装置，其特征在于，
    所述关闭开距大于所述脱扣开距。
  9. 如权利要求7所述的控制与保护开关电器的内部反馈装置，其特征在于，所述执行机构通过齿轮机构连接到操作机构。
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