WO2016090740A1 - 断路器的具有可翻转静触头的触头装置和断路器 - Google Patents

断路器的具有可翻转静触头的触头装置和断路器 Download PDF

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Publication number
WO2016090740A1
WO2016090740A1 PCT/CN2015/071815 CN2015071815W WO2016090740A1 WO 2016090740 A1 WO2016090740 A1 WO 2016090740A1 CN 2015071815 W CN2015071815 W CN 2015071815W WO 2016090740 A1 WO2016090740 A1 WO 2016090740A1
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WO
WIPO (PCT)
Prior art keywords
contact
static contact
static
shaft
spring
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PCT/CN2015/071815
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English (en)
French (fr)
Inventor
江华华
郑英川
刘文俊
Original Assignee
浙江正泰电器股份有限公司
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Publication date
Application filed by 浙江正泰电器股份有限公司 filed Critical 浙江正泰电器股份有限公司
Priority to ES15866460T priority Critical patent/ES2886888T3/es
Priority to EP15866460.7A priority patent/EP3232461B1/en
Priority to MYPI2017702115A priority patent/MY186127A/en
Publication of WO2016090740A1 publication Critical patent/WO2016090740A1/zh
Priority to SA517381695A priority patent/SA517381695B1/ar

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/16—Contacts characterised by the manner in which co-operating contacts engage by abutting by rolling; by wrapping; Roller or ball contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/04—Contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/24—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
    • H01H1/502—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position the action of the contact pressure spring becoming active only after engagement of the contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/22—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact
    • H01H1/221—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member
    • H01H2001/223—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member using a torsion spring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
    • H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
    • H01H77/10—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening
    • H01H77/102—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening characterised by special mounting of contact arm, allowing blow-off movement
    • H01H77/104—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening characterised by special mounting of contact arm, allowing blow-off movement with a stable blow-off position

Definitions

  • the utility model relates to the field of power distribution and industrial control, and more particularly to a contact device with a reversible static contact of a circuit breaker and a circuit breaker.
  • the contact device of the conventional plastic case circuit breaker is usually fixedly mounted, and the movable contact can be oscillated and separated by the operating mechanism to contact and separate the static contact to realize the closing and breaking of the circuit breaker;
  • the head device can only be turned over with the moving contact, and the arcing speed is slow. Therefore, a contact device with a reversible static contact of a circuit breaker is provided, and the reversible function of the static contact mainly utilizes a short-circuit current flowing through the dynamic and static contact to generate a repulsive force on the contact to simultaneously make the dynamic and static contact Flip, thereby elongating the arc to accelerate the arc extinction.
  • the static contact is reversible, and the static contact is usually pivotally mounted on the shaft; thus, the static contact has two motion pairs, and in addition to being reversible, it can also move axially; for example, the static contact is axially biased.
  • the shift will result in a smaller contact area with the moving contact, and therefore a means for preventing axial displacement of the stationary contact is also required.
  • the structure of the device that is axially offset is required to be added with separate components, such as adding bushings on the two sides of the static contact, the components to be assembled are too much, the assembly is cumbersome, and the efficiency is low. .
  • the purpose of the present invention is to overcome the deficiencies of the prior art and to provide a contact device and a circuit breaker having a reversible static contact of a circuit breaker having a simple structure.
  • a contact device with a reversible static contact of a circuit breaker includes a static contact 10 and a static contact holder 40.
  • the static contact 10 is embedded in the static contact holder 40, and the static contact holder 40 is disposed a limiting member for restricting movement of the static contact in the axial position; the static contact 10 is rotatable about a central shaft 71 disposed on the stationary contact holder 40, and the static contact holder 40 is provided with a static limit for rotating the static contact 10
  • the contact spring 50, the static contact spring 50 and the stationary contact 10 are connected to the stationary contact 10.
  • the limiting component includes a limiting slot 411 corresponding to the static contact bracket, and the static contact
  • the head 10 is embedded in the limiting slot 411; the bottom of the limiting slot 411 is provided with an upper limit surface 401 which is in contact with the end surface of the static contact; the first limit of the contact position of the side surface of the fixed contact is respectively provided on both sides of the upper limit surface 401
  • the plane 412 and the second limiting surface 413 is provided.
  • the limiting component comprises a first limiting arm 422 and a second limiting arm 423 respectively disposed on the inner side walls of the static contact bracket.
  • the static contact holder 40 is provided with a positioning shaft 70 for mounting the static contact spring 50, a central shaft 71 penetrating the rotation axis of the static contact, and a bearing shaft 21 for passing the static contact and limiting the static contact spring.
  • the contact spring 50 is fitted over the positioning shaft 70, and the spring arms projecting at both ends are caught on the bearing shaft 21 penetrating the stationary contact 10.
  • the central shaft 71 faces the second side surface 102 of the static contact 10 and is provided with a central limiting step surface 711;
  • the pressure receiving shaft 21 faces the first side 101 of the static contact 10 and is provided with a pressure limiting limit.
  • the step surface 211; the center limit step surface 711 and the pressure limit step surface 211 collectively restrict the movement of the fixed contact 10 in the axial direction from both sides.
  • first side surface 101 of the bearing shaft 21 facing the static contact is provided with a pressure limiting step surface 211, and the first circlip of the mounting spring is disposed at a corresponding position of the second side 102 of the bearing shaft 21 facing the static contact.
  • the groove 212, the pressure limiting step surface 211 and the circlip spring cooperate to restrict the movement of the static contact in the direction of the shaft body.
  • the second side 102 of the central shaft 71 facing the static contact is provided with a central limiting step surface 711
  • the second shaft groove of the central spring 71 facing the first side 101 of the static contact is provided with a second spring groove for mounting the circlip 712, the central limiting step surface 711 and the circlip spring cooperate to restrict the movement of the static contact in the direction of the shaft body.
  • the reversible contact device includes a contact 11 soldered to the stationary contact 10, and a firing plate 90 that is riveted to the stationary contact 10 by a rivet 80 to facilitate arc extinction.
  • the reversible contact device further includes a shield 60; the shield 60 covers the stationary contact holder 40 and covers both ends of the central shaft 71 and the positioning shaft 70.
  • the utility model also provides a circuit breaker, comprising the above-mentioned contact device with a reversible static contact, wherein the static contact holder 40 of the contact device is fixedly mounted in the circuit breaker, and the operating mechanism drives the movable contact to rotate and static Contact contact and separation enable the closing and breaking of the circuit breaker.
  • the static contact of the utility model is rotatably mounted on the static contact bracket, fixed by the static contact spring, and can be turned around the central axis, and the short-circuit current flowing through the dynamic and static contact can be utilized to generate a repulsive force on the contact
  • the contacts are flipped at the same time, thereby elongating the arc to accelerate the arc extinction.
  • the limit is formed on the fixed contact bracket and the stepped shaft of the shaft passing through the fixed contact to face the two sides of the fixed contact, thereby effectively blocking
  • the static sealing contact moves along the axial direction of the shaft body to ensure the contact area of the moving and static contact, and can effectively reduce the assembly difficulty and improve the assembly efficiency.
  • FIG. 1 is a schematic structural view of a reversible contact device of a circuit breaker according to an embodiment of the present invention.
  • FIG. 2 is a schematic exploded view showing the structure of a reversible contact device of a circuit breaker according to an embodiment of the present invention
  • FIG. 3 is a schematic structural view of a static contact holder according to an embodiment of the present invention.
  • FIG. 4 is a perspective view showing the assembly of the reversible contact device of the circuit breaker according to the embodiment of the present invention.
  • FIG. 5 is a top plan view showing the assembly of the reversible contact device of the circuit breaker according to the embodiment of the present invention.
  • FIG. 6 is a schematic exploded view showing the structure of another reversible contact device of a circuit breaker according to Embodiment 1 of the present invention.
  • FIG. 7 is a schematic structural view of another static contact bracket according to Embodiment 1 of the present invention.
  • FIG. 8 is a schematic exploded view showing the structure of the reversible contact device of the circuit breaker according to the second embodiment of the present invention.
  • Figure 9 is a schematic structural view of a bearing shaft according to a second embodiment of the present invention.
  • Figure 10 is a schematic structural view of a central shaft of the second embodiment of the present invention.
  • Figure 11 is a perspective view showing the assembly of the reversible contact device of the circuit breaker according to the second embodiment of the present invention.
  • FIG. 12 is a top plan view showing the assembly of the reversible contact device of the circuit breaker according to the second embodiment of the present invention.
  • Figure 13 is a schematic structural view of another pressure bearing shaft according to Embodiment 2 of the present invention.
  • Figure 14 is a schematic view showing the structure of another central shaft according to the second embodiment of the present invention.
  • FIGS. 1 to 14 A specific embodiment of the flip contact device.
  • the reversible contact device of the circuit breaker of the present invention is not limited to the description of the following embodiments.
  • the contact device of the circuit breaker having the reversible static contact includes a fixed contact 10 and a movable contact (not shown), and the fixed contact 10 is embedded in the fixed contact holder 40.
  • the static contact spring 40 is provided with a static contact spring 50 and a positioning shaft 70 for mounting the static contact spring 50.
  • the static contact holder 40 is further provided with a shaft body extending through the static contact; the shaft body includes a through shaft.
  • the contact device further includes a contact 11 welded on the static contact, a launching plate 90 riveted to the static contact by the rivet 80, and a protective cover 60; the protective cover 60 is covered on the static contact bracket and covers the center
  • the two ends of the shaft 71 and the positioning shaft 70 are the insulators covering the contacts of the circuit breaker.
  • the static contact 10 of the contact device of the present invention is pivotally mounted on the static contact holder 40 through the central shaft 71.
  • the static contact 10 is subjected to the spring force of the static contact, and can be turned around the central axis 71 while being statically
  • the restriction of the upper limit member of the contact holder 40 maintains a balance while the initial pressure is maintained on the contact, and the shield 60 covers the bracket to prevent axial movement of the central shaft 71 and the positioning shaft 70.
  • the limiting component includes a limiting slot 411 formed on the stationary contact bracket, the static contact is embedded in the limiting slot 411, and the bottom of the limiting slot is provided with the end surface of the static contact.
  • the upper limit surface 401 of the positioning; the upper limit surface 401 is respectively provided with a first limiting surface 412 and a second limiting surface 413 which are in contact with the side surface of the fixed contact.
  • the limiting slot 411 can prevent the axial movement of the contact, thereby realizing the axial positioning of the static contact, thereby ensuring the contact area of the dynamic and static contact.
  • the static contact holder 40 has a U-shaped structure, and the two side walls of the U-shaped structure are provided with mounting holes for mounting the central shaft 71 and the positioning shaft 70, and the bottom is provided with a spring extending from the center of the static contact spring 50.
  • the spring arm mounting hole of the arm is further provided with a fixing hole fixedly connected to the base of the circuit breaker at the bottom; a limiting slot 411 is formed at a corresponding position of one end of the bottom of the static contact holder 40.
  • FIG. 6 and FIG. 7 show another form of the limiting component.
  • the limiting component includes two inner sidewalls of the static contact bracket respectively provided with a first limiting arm 422 and a second position which are in contact with the side surface of the static contact.
  • Limit arm 423 The first limiting arm 422 and the second limiting arm 423 prevent the static contact from moving axially, thereby achieving axial positioning of the stationary contact.
  • the static contact of the utility model is rotatably mounted on the static contact bracket, fixed by the static contact spring, and can be turned around the central axis 71, and the short circuit current flowing through the dynamic and static contact can be utilized to generate a repulsive force on the contact.
  • the static and dynamic contacts are flipped at the same time, thereby elongating the arc to accelerate the arc extinction of the arc.
  • the limiting component can limit the displacement of the static contact in the axial direction. Since the limiting component can be directly formed in the static contact bracket, the processing is convenient and can be pre-manufactured, does not occupy assembly time, and does not need to be needed like a sleeve.
  • the shaft body can be installed to realize the limit function, which can effectively reduce the assembly difficulty and improve the assembly efficiency.
  • the shield 60 is shielded on the bracket to prevent the axial movement of the central shaft 71 and the positioning shaft 70, and the assembly is convenient and the efficiency is high.
  • the contact device of the circuit breaker having the reversible static contact includes a stationary contact 10 and a movable contact (not shown), and the stationary contact 10 is embedded in the fixed contact bracket 40.
  • the static contact spring 40 is provided with a static contact spring 50 and a positioning shaft 70 for mounting the static contact spring 50.
  • the static contact holder 40 is further provided with a shaft body extending through the static contact; the shaft body includes a through shaft.
  • a central shaft 71 of the rotating shaft of the static contact, a bearing shaft 21 passing through the static contact and limiting the static contact spring, and the static contact spring 50 is set on the positioning shaft 70, and the spring arms extending at both ends are stuck in the static
  • the spring-extending spring arm is clamped in the spring arm mounting hole of the contact holder 40; the shaft body is disposed on the side of the static contact 10 to limit the direction of the static contact 10 along the shaft body. The step surface of the movement.
  • the contact device further includes a contact 11 welded on the static contact, a launching plate 90 riveted to the static contact by the rivet 80, and a protective cover 60; the protective cover 60 is covered on the static contact bracket and covers the center Both ends of the shaft 71 and the positioning shaft 70.
  • the static contact 10 of the contact device of the present invention is pivotally mounted on the static contact holder 40 through the central shaft 71.
  • the static contact 10 is subjected to the spring force of the static contact, and can be turned around the central axis 71 while being statically
  • the restriction of the shaft body on the contact holder 40 maintains a balance while the initial pressure is maintained on the contact, and the shield 60 covers the bracket to prevent axial movement of the central shaft 71 and the positioning shaft 70.
  • the static contact holder 40 has a U-shaped structure, and two side walls of the U-shaped structure are provided with a mounting central shaft 71 and The mounting hole of the positioning shaft 70 is provided with a spring arm mounting hole for mounting a spring arm extending from the middle of the static contact spring 50, and a fixing hole fixedly connected to the base of the circuit breaker is further disposed at the bottom.
  • the step surface of the shaft body includes a central limiting step surface 711 and a pressure limiting step surface 211; the central shaft 71 has a central limit facing the second side 102 of the static contact.
  • a step surface 711; the first side surface 101 of the bearing shaft 21 facing the static contact is provided with a pressure limiting step surface 211; the central limiting step surface 711 and the pressure limiting step surface 211 jointly limit the static contact 10 from both sides
  • the movement of the shaft body ensures the contact area of the moving and static contacts, and the processing is simple, no additional components are required, and the assembly difficulty is reduced, which is an optimal limit solution.
  • the central shaft 71 includes three coaxial, decreasing diameter cylinders, and the diameters from the largest to the smallest are the first cylinder 713, the second cylinder 714 and the third cylinder 715; the second cylinder and the third cylinder
  • the end faces of the column connections form a central limit step surface 711.
  • the bearing shaft 21 includes a fixing portion 213 at both ends, and a connecting post 214 located at the middle; the fixing portion 213 is recessed inwardly to define a spring arm for limiting the two ends of the stationary contact spring 50; the connecting post 214 and one of the legs
  • the connecting portion of the fixing portion 213 is provided with a convex ring 215, and the convex ring 215 faces the side wall of the connecting cylinder 214 to form a pressure limiting step surface 211.
  • the first side surface 101 of the bearing shaft 21 facing the static contact is provided with a pressure limiting step surface 211 , and the bearing shaft 21 faces the static contact.
  • the first side 102 is correspondingly disposed with a first spring groove 212 for mounting a circlip, and then a snap spring (not shown) is engaged in the slot,
  • the step surface of the shaft includes a pressure limiting step surface 211, the pressure limiting step surface 211 and the circlip spring cooperate to restrict the movement of the static contact in the direction of the shaft body.
  • the second side 102 of the central shaft 71 facing the stationary contact is provided with a central limiting step surface 711, and the central shaft 71 faces the first of the static contacts.
  • the second side of the side surface 101 is provided with a second spring groove 712 for mounting a circlip, and then a circlip (not shown) is engaged in the slot, the step surface of the shaft body includes a central limiting step surface 711.
  • the central limiting step surface 711 cooperates with the circlip spring to restrict the movement of the static contact in the direction of the shaft body.
  • the step surface forms of the above three kinds of shaft bodies can also be combined, that is, through the center limit step surface 711 and the pressure limit step surface 211, the center limit step surface 711 and the second spring groove. 712 fixed circlip, pressure limiting step surface 211 and the first circlip groove 212 fixed circlip, any two or two combinations or three groups together limit the movement of the static contact in the direction of the shaft body, of course, the cost is increased .
  • the central limiting step surface 711 and the pressure limiting step surface 211 are matched, and the limiting structure is formed on the static contact by the cooperation of the two components, without adding components or affecting the central axis 71 and
  • the assembly of the bearing shaft 21 itself itself has high assembly efficiency.
  • the present invention can also adopt the manners of the first embodiment and the second embodiment, that is, the limit position and the axial movement of the shaft body face the static movement of the static contact at the same time, as mentioned.
  • the limit position and the axial movement of the shaft body face the static movement of the static contact at the same time, as mentioned.
  • the utility model also provides a circuit breaker, comprising the contact device with the reversible static contact of the utility model, the operating mechanism of the circuit breaker is connected with the moving contact of the contact device, and the static contact bracket of the contact device is fixed Installed in the circuit breaker, the operating mechanism drives the moving contact to rotate and contact and separate the static contact to realize the closing and breaking of the circuit breaker.
  • the movable contact and the static contact of the circuit breaker of the utility model can be reversed, and the dynamic and static contact can utilize the short-circuit current flowing through the dynamic and static contact, and generate a repulsive force on the contact to make the dynamic and static contact flip at the same time, thereby pulling faster.
  • the long arc accelerates the arc extinction of the arc.
  • the circuit breaker also includes other mechanisms such as an arc extinguishing device and an overcurrent protection mechanism.
  • the circuit breaker of the utility model has a contact device with a reversible static contact, and the contact device comprises a reversible static contact in addition to the rotatable movable contact, and the short-circuit current flowing through the dynamic and static contact can be utilized.
  • a repulsive force is generated on the contacts to cause the moving and static contacts to be turned over at the same time, thereby elongating the arc extinguishing of the arc.
  • the static contact of the utility model is rotatably mounted in the static contact bracket through the central shaft and the static contact spring, and has a simple structure. In addition, by restricting the two sides of the fixed contact by the step forming member formed on the fixed contact holder and the step of the shaft body penetrating the fixed contact, the static contact can be effectively prevented from moving in the axial direction of the shaft body.

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Abstract

一种断路器的具有可翻转静触头的触头装置，包括静触头（10）和静触头支架（40），静触头（10）嵌入安装在静触头支架（40）内，静触头支架（40）上设有限制静触头（10）沿轴向位置移动的限位部件；静触头（10）可绕设置在静触头支架（40）上的中心轴（71）转动，静触头支架（40）内设有限制静触头（10）转动的静触头弹簧（50），静触头弹簧（50）与静触头（10）连接固定静触头（10）。静触头（10）可转动的安装在静触头支架（40）上，在触头上产生斥力使动静触头（10）同时翻转，从而拉长电弧加速电弧的熄弧，通过形成在静触头支架（40）上的限位部件可以有效阻止静触头（10）沿轴体轴向方向移动，以保证动静触头的接触面积，并且可以有效降低装配难度，提高装配效率。

Description

断路器的具有可翻转静触头的触头装置和断路器 技术领域
本实用新型涉及配电和工控领域，更具体的说，涉及一种断路器和断路器的具有可翻转静触头的触头装置。
背景技术
传统的塑料外壳式断路器的触头装置通常静触头是固定安装的，动触头可在操作机构的驱动下摆动与静触头接触和分离，实现断路器的闭合和分断；这种触头装置只有动触头可翻转，拉弧速度较慢。因此提供了一种断路器的具有可翻转静触头的触头装置，静触头的可翻转功能主要作用是利用流经动静触头的短路电流，在触头上产生斥力使动静触头同时翻转，从而拉长电弧加速熄弧。同时，静触头为达到可翻转，通常将静触头枢转安装于轴上；如此静触头有二个运动副，除可翻转外，还可轴向移动；如静触头轴向偏移将会导致与动触头的接触面积偏小，因此也需要一种防止静触头轴向偏移的装置。但受空间限制如果防轴向偏移的装置的结构需要增设单独的元件，如在静触头的二个侧面分别加装轴套的方式，则需装配的元件过多，组装繁琐，效率低下。
发明内容
本实用新型的目的在于克服现有技术的缺陷，提供一种结构简单的断路器的具有可翻转静触头的触头装置和断路器。
为实现上述目的，本实用新型采用了如下技术方案：
一种断路器的具有可翻转静触头的触头装置，包括静触头10和静触头支架40，静触头10嵌入安装在静触头支架40内，静触头支架40上设有限制静触头沿轴向位置移动的限位部件；静触头10可绕设置在静触头支架40上的中心轴71转动，静触头支架40内设有限制静触头10转动的静触头弹簧50，静触头弹簧50与静触头10连接固定静触头10。
进一步，所述的限位部件包括对应形成在静触头支架上的限位槽411，静触 头10嵌入限位槽411内；限位槽411底部设有跟静触头的端面接触定位的上限位面401；上限位面401两侧分别设有跟静触头侧面接触定位的第一限位面412和第二限位面413。
进一步，所述的限位部件包括静触头支架两内侧壁分别设有跟静触头侧面接触定位的第一限位臂422和第二限位臂423。
进一步，静触头支架40内设有安装静触头弹簧50的定位轴70、贯穿静触头旋转轴心的中心轴71、贯穿静触头且限位静触头弹簧的承压轴21，静触头弹簧50套装在定位轴70上，两端伸出的簧臂卡在贯穿静触头10的承压轴21上。
进一步，所述中心轴71面向所述静触头10的第二侧面102设有中心限位阶梯面711；所述承压轴21面向所述静触头10的第一侧面101设有承压限位阶梯面211；中心限位阶梯面711和承压限位阶梯面211从两侧共同限制静触头10沿轴体方向运动。
进一步，所述承压轴21面向静触头的第一侧面101设有承压限位阶梯面211，承压轴21面向静触头的第二侧面102对应位置设有安装卡簧的第一卡簧槽212，承压限位阶梯面211和跟卡簧配合共同限制静触头沿轴体方向运动。
进一步，所述中心轴71面向静触头的第二侧面102设有中心限位阶梯面711，中心轴71面向静触头的第一侧面101对应位置设有安装卡簧的第二卡簧槽712，中心限位阶梯面711和跟卡簧配合共同限制静触头沿轴体方向运动。
进一步，所述可翻转触头装置包括焊在静触头10上的触点11，以及用铆钉80铆接在静触头10上的有助于电弧熄灭的发射板90。
进一步，所述可翻转触头装置还包括防护罩60；所述防护罩60罩在静触头支架40上并覆盖中心轴71和定位轴70的两端。
本实用新型还提供了一种断路器，包括上述的具有可翻转静触头的触头装置，触头装置的静触头支架40固定安装在断路器内，操作机构驱动动触头转动与静触头接触和分离实现断路器的闭合和分断。
本实用新型的静触头可转动的安装在静触头支架上，通过静触头弹簧固定，可围绕中心轴翻转，可利用流经动静触头的短路电流，在触头上产生斥力使动静触头同时翻转，从而拉长电弧加速电弧的熄弧。通过形成在静触头支架上的限位部件和或贯穿静触头的轴体的阶梯面对静触头两侧进行限位，可以有效阻 止静触头沿轴体轴向方向移动，以保证动静触头的接触面积，并且可以有效降低装配难度，提高装配效率。
附图说明
图1是本实用新型实施例一断路器的可翻转触头装置结构示意图。
图2是本实用新型实施例一断路器的可翻转触头装置的结构爆炸示意图；
图3是本实用新型实施例一静触头支架的结构示意图；
图4是本实用新型实施例一断路器的可翻转触头装置装配立体示意图；
图5是本实用新型实施例一断路器的可翻转触头装置装配俯视示意图；
图6是本实用新型实施例一另一种断路器的可翻转触头装置的结构爆炸示意图；
图7是本实用新型实施例一另一种静触头支架的结构示意图；
图8是本实用新型实施例二断路器的可翻转触头装置的结构爆炸示意图；
图9是本实用新型实施例二承压轴的结构示意图；
图10是本实用新型实施例二中心轴的结构示意图；
图11是本实用新型实施例二断路器的可翻转触头装置装配立体示意图；
图12是本实用新型实施例二断路器的可翻转触头装置装配俯视示意图；
图13是本实用新型实施例二另一种承压轴的结构示意图；
图14是本实用新型实施例二另一种中心轴的结构示意图。
其中：10、静触头；101、第一侧面；102、第二侧面；11、触点；21、承压轴；211、承压限位阶梯面；212、第一卡簧槽；213、固定部；214、连接柱体；215、凸环；40、静触头支架；401、上限位面；411、限位槽；412、第一限位面；413、第二限位面；422、第一限位臂；423、第二限位臂；50、静触头弹簧；60、防护罩；70、定位轴；71、中心轴；711、中心限位阶梯面；712、第二卡簧槽；713、第一柱体；714、第二柱体；715、第三柱体；80、铆钉；90、发射板。
具体实施方式
以下结合附图1至14给出的实施例，进一步说明本实用新型的断路器的可 翻转触头装置的具体实施方式。本实用新型的断路器的可翻转触头装置不限于以下实施例的描述。
实施例一
如图1-5所示，断路器的具有可翻转静触头的触头装置包括静触头10和动触头(图中未示出)，静触头10嵌入安装在静触头支架40内，静触头支架40内设有静触头弹簧50和安装静触头弹簧50的定位轴70，静触头支架40内还设有贯穿静触头的轴体；所述轴体包括贯穿静触头旋转轴心的中心轴71、贯穿静触头且限位静触头弹簧的承压轴21，静触头弹簧50套装在定位轴70上，两端伸出的簧臂卡在贯穿静触头10的承压轴21上，中间伸出的簧臂卡装在触头支架40的簧臂安装孔内；静触头支架40上还形成有限制静触头沿轴体轴向位置移动的限位部件。所述的触头装置还包括焊在静触头上的触点11、用铆钉80铆接在静触头上的发射板90、防护罩60；防护罩60罩在静触头支架上并覆盖中心轴71和定位轴70的两端，所述发射板90为覆盖于断路器触头周围的绝缘物，当动静触头间产生强电弧时，受电弧灼热会产生可冷却电弧的气体，并加大触头四周空气压力，从而助于电弧熄灭。本实用新型的触头装置的静触头10通过中心轴71枢转安装在静触头支架40上，静触头10受静触头弹簧力的作用，可围绕中心轴71翻转，同时受静触头支架40上限位部件的限制保持一种平衡，同时触头上保持有初压力，防护罩60罩在支架上防止中心轴71及定位轴70的轴向移动。
如图3所示，所述的限位部件包括对应形成在静触头支架上的限位槽411，静触头嵌入限位槽411内；限位槽底部设有跟静触头的端面接触定位的上限位面401；上限位面401两侧分别设有跟静触头侧面接触定位的第一限位面412和第二限位面413。限位槽411可以阻止触头轴向移动，从而实现了静触头的轴向定位，从而保证了动静触头的接触面积。具体的，静触头支架40成U型结构，U型结构的两侧壁上设有安装中心轴71和定位轴70的安装孔，底部上设有安装静触头弹簧50中间伸出的簧臂的簧臂安装孔，底部还设有与断路器底座固定连接的固定孔；在静触头支架40底部的一端对应位置形成限位槽411。此为一种具体的通过静触头弹簧50固定静触头10的安装方式，当然也可以采用弹簧通 过别的方式固定静触头10。
图6、7给出了限位部件的另一种形式，所述的限位部件包括静触头支架两内侧壁分别设有跟静触头侧面接触定位的第一限位臂422和第二限位臂423。第一限位臂422和第二限位臂423阻止静触头轴向移动，从而实现了静触头的轴向定位。
本实用新型的静触头可转动的安装在静触头支架上，通过静触头弹簧固定，可围绕中心轴71翻转，可利用流经动静触头的短路电流，在触头上产生斥力使动静触头同时翻转，从而拉长电弧加速电弧的熄弧。同时限位部件可限制静触头向轴向方向偏移，由于限位部件可以直接在静触头支架内加工成型，加工方便且可以预先制造，不占用装配时间，不需要像轴套一样需要在组装过程中配合轴体安装才能实现限位功能，可以有效降低装配难度，提高装配效率。进一步，防护罩60罩在支架上防止中心轴71及定位轴70的轴向移动，装配方便，效率高。
实施例二
如图8-12所示，断路器的具有可翻转静触头的触头装置包括静触头10和动触头(图中未示出)，静触头10嵌入安装在静触头支架40内，静触头支架40内设有静触头弹簧50和安装静触头弹簧50的定位轴70，静触头支架40内还设有贯穿静触头的轴体；所述轴体包括贯穿静触头旋转轴心的中心轴71、贯穿静触头且限位静触头弹簧的承压轴21，静触头弹簧50套装在定位轴70上，两端伸出的簧臂卡在贯穿静触头10的承压轴21上，中间伸出的簧臂卡装在触头支架40的簧臂安装孔内；所述轴体面向静触头10侧面设有限制静触头10沿轴体方向运动的阶梯面。所述的触头装置还包括焊在静触头上的触点11、用铆钉80铆接在静触头上的发射板90、防护罩60；防护罩60罩在静触头支架上并覆盖中心轴71和定位轴70的两端。本实用新型的触头装置的静触头10通过中心轴71枢转安装在静触头支架40上，静触头10受静触头弹簧力的作用，可围绕中心轴71翻转，同时受静触头支架40上轴体的限制保持一种平衡，同时触头上保持有初压力，防护罩60罩在支架上防止中心轴71及定位轴70的轴向移动。所述静触头支架40成U型结构，U型结构的两侧壁上设有安装中心轴71和 定位轴70的安装孔，底部上设有安装静触头弹簧50中间伸出的簧臂的簧臂安装孔，底部还设有与断路器底座固定连接的固定孔。
如图9-10所示，所述轴体的阶梯面包括中心限位阶梯面711和承压限位阶梯面211；所述中心轴71面向静触头的第二侧面102设有中心限位阶梯面711；承压轴21面向静触头的第一侧面101设有承压限位阶梯面211；中心限位阶梯面711和承压限位阶梯面211从两侧共同限制静触头10沿轴体方向运动，从而保证了动静触头的接触面积，而且加工简单，不需要增加的元件，降低了装配难度，是最佳的限位方案。所述中心轴71包括三段同轴的、直径递减的柱体，直径从大到小依次为第一柱体713、第二柱体714和第三柱体715；第二柱体与第三柱体连接的端面形成中心限位阶梯面711。所述承压轴21包括位于两端的固定部213，以及位于中间的连接柱体214；固定部213柱面向内凹陷用于限位静触头弹簧50两端的簧臂；连接柱体214与其中一个固定部213的连接处设有凸环215，凸环215面向连接柱体214的侧壁形成承压限位阶梯面211。
如图13所示，所述轴体的阶梯面的另一种形式，承压轴21面向静触头的第一侧面101设有承压限位阶梯面211，承压轴21面向静触头的第二侧面102对应位置设有安装卡簧的第一卡簧槽212，然后在卡槽槽中卡接卡簧(图中未示出)，所述轴体的阶梯面包括承压限位阶梯面211，承压限位阶梯面211和跟卡簧配合共同限制静触头沿轴体方向运动。
如图14所示，所述轴体的阶梯面的另一种形式，中心轴71面向静触头的第二侧面102设有中心限位阶梯面711，中心轴71面向静触头的第一侧面101对应位置设有安装卡簧的第二卡簧槽712，然后在卡槽槽中卡接卡簧(图中未示出)，所述轴体的阶梯面包括中心限位阶梯面711，中心限位阶梯面711和跟卡簧配合共同限制静触头沿轴体方向运动。
为了增强限位效果，上述的三种轴体的阶梯面形式还可以组合设置，即通过中心限位阶梯面711和承压限位阶梯面211、中心限位阶梯面711和第二卡簧槽712固定的卡簧、承压限位阶梯面211和第一卡簧槽212固定的卡簧，任意两两组合或者三组共同限制静触头沿轴体方向运动，当然这样成本也就增加了。优选仅采用中心限位阶梯面711和承压限位阶梯面211配合的方式，通过两个元件的配合共同对静触头形成限位结构，无需增加元件，也不影响中心轴71和 承压轴21本身的装配，装配效率高。
此外，本实用新型还可以采用综合实施例一和实施例二两种实施例的方式，即同时通过限位部件和轴体的阶梯面对静触头的轴向移动进行限位，所提及的技术特征可以参见以上两种实施例的附图和描述，在此不再赘述。
实施例三
本实用新型还提供一种断路器，包括本实用新型的具有可翻转静触头的触头装置，断路器的操作机构与触头装置的动触头连接，触头装置的静触头支架固定安装在断路器内，操作机构驱动动触头转动与静触头接触和分离实现断路器的闭合和分断。本实用新型的断路器的动触头和静触头均可翻转，动静触头可利用流经动静触头的短路电流，在触头上产生斥力使动静触头同时翻转，从而更快的拉长电弧加速电弧的熄弧。当然，断路器还包括灭弧装置、过电流保护机构等其它机构。
本实用新型的断路器的具有可翻转静触头的触头装置，触头装置除了可转动的动触头外，还包括可翻转的静触头，可利用流经动静触头的短路电流，在触头上产生斥力使动静触头同时翻转，从而拉长电弧加速电弧的熄弧。本实用新型的静触头通过中心轴和静触头弹簧可转动的安装在静触头支架内，结构简单。此外，通过形成在静触头支架上的限位部件和或贯穿静触头的轴体的阶梯面对静触头两侧进行限位，可以有效阻止静触头沿轴体轴向方向移动。
以上内容是结合具体的优选实施方式对本实用新型所作的进一步详细说明，不能认定本实用新型的具体实施只局限于这些说明。对于本实用新型所属技术领域的普通技术人员来说，在不脱离本实用新型构思的前提下，还可以做出若干简单推演或替换，都应当视为属于本实用新型的保护范围。

Claims (10)

  1. 一种断路器的具有可翻转静触头的触头装置，其特征在于：包括静触头(10)和静触头支架(40)，静触头(10)嵌入安装在静触头支架(40)内，静触头支架(40)上设有限制静触头沿轴向位置移动的限位部件；静触头(10)可绕设置在静触头支架(40)上的中心轴(71)转动，静触头支架(40)内设有限制静触头(10)转动的静触头弹簧(50)，静触头弹簧(50)与静触头(10)连接固定静触头(10)。
  2. 根据权利要求1所述的具有可翻转静触头的触头装置，其特征在于：所述的限位部件包括对应形成在静触头支架上的限位槽(411)，静触头(10)嵌入限位槽(411)内；限位槽(411)底部设有跟静触头的端面接触定位的上限位面(401)；上限位面(401)两侧分别设有跟静触头侧面接触定位的第一限位面(412)和第二限位面(413)。
  3. 根据权利要求1所述的具有可翻转静触头的触头装置，其特征在于：所述的限位部件包括静触头支架两内侧壁分别设有跟静触头侧面接触定位的第一限位臂(422)和第二限位臂(423)。
  4. 根据权利要求1-3任一所述的具有可翻转静触头的触头装置，其特征在于：静触头支架(40)内设有安装静触头弹簧(50)的定位轴(70)、贯穿静触头旋转轴心的中心轴(71)、贯穿静触头且限位静触头弹簧的承压轴(21)，静触头弹簧(50)套装在定位轴(70)上，两端伸出的簧臂卡在贯穿静触头(10)的承压轴(21)上。
  5. 根据权利要求4所述的具有可翻转静触头的触头装置，其特征在于：所述中心轴(71)面向所述静触头(10)的第二侧面(102)设有中心限位阶梯面(711)；所述承压轴(21)面向所述静触头(10)的第一侧面(101)设有承压限位阶梯面(211)；中心限位阶梯面(711)和承压限位阶梯面(211)从两侧共同限制静触头(10)沿轴体方向运动。
  6. 根据权利要求4所述的具有可翻转静触头的触头装置，其特征在于：所述承压轴(21)面向静触头的第一侧面(101)设有承压限位阶梯面(211)，承压轴(21)面向静触头的第二侧面(102)对应位置设有安装卡簧的第一卡簧槽(212)，承压限位阶梯面(211)和跟卡簧配合共同限制静触头沿轴体方向 运动。
  7. 根据权利要求4所述的具有可翻转静触头的触头装置，其特征在于：所述中心轴(71)面向静触头的第二侧面(102)设有中心限位阶梯面(711)，中心轴(71)面向静触头的第一侧面(101)对应位置设有安装卡簧的第二卡簧槽(712)，中心限位阶梯面(711)和跟卡簧配合共同限制静触头沿轴体方向运动。
  8. 根据权利要求1所述的具有可翻转静触头的触头装置，其特征在于：所述可翻转触头装置包括焊在静触头(10)上的触点(11)，以及用铆钉(80)铆接在静触头(10)上的有助于电弧熄灭的发射板(90)。
  9. 根据权利要求4所述的具有可翻转静触头的触头装置，其特征在于：所述可翻转触头装置还包括防护罩(60)；所述防护罩(60)罩在静触头支架(40)上并覆盖中心轴(71)和定位轴(70)的两端。
  10. 一种断路器，其特征在于：包括权利要求1-9任一所述的具有可翻转静触头的触头装置，触头装置的静触头支架(40)固定安装在断路器内，操作机构驱动动触头转动与静触头接触和分离实现断路器的闭合和分断。
PCT/CN2015/071815 2014-12-10 2015-01-29 断路器的具有可翻转静触头的触头装置和断路器 WO2016090740A1 (zh)

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ES15866460T ES2886888T3 (es) 2014-12-10 2015-01-29 Disyuntor y dispositivo de contacto que tiene un contacto estático rotatorio asociado
EP15866460.7A EP3232461B1 (en) 2014-12-10 2015-01-29 Breaker and contact device having rotatable fixed contact thereof
MYPI2017702115A MY186127A (en) 2014-12-10 2015-01-29 Contact device having a rotatable static contact and of circuit breaker, and circuit breaker
SA517381695A SA517381695B1 (ar) 2014-12-10 2017-06-10 جهاز تلامس به ملامس استاتيكي دوار ولقاطع دائرة، وقاطع دائرة

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CN108242373A (zh) * 2018-02-27 2018-07-03 首瑞（天津）电气设备有限公司 一种断路器

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