WO2020233667A1 - Overheating and overcurrent tripping device and surge protector - Google Patents

Overheating and overcurrent tripping device and surge protector Download PDF

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Publication number
WO2020233667A1
WO2020233667A1 PCT/CN2020/091555 CN2020091555W WO2020233667A1 WO 2020233667 A1 WO2020233667 A1 WO 2020233667A1 CN 2020091555 W CN2020091555 W CN 2020091555W WO 2020233667 A1 WO2020233667 A1 WO 2020233667A1
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WO
WIPO (PCT)
Prior art keywords
electrode
reed
slider
surge protector
protection device
Prior art date
Application number
PCT/CN2020/091555
Other languages
French (fr)
Chinese (zh)
Inventor
游连桥
罗禄全
曹安平
张祥贵
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厦门赛尔特电子有限公司
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Publication of WO2020233667A1 publication Critical patent/WO2020233667A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
    • H01H37/76—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
    • H01H37/761—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material with a fusible element forming part of the switched circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
    • H01C7/12—Overvoltage protection resistors
    • H01C7/126—Means for protecting against excessive pressure or for disconnecting in case of failure
    • 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
    • H01H71/20—Electrothermal mechanisms with fusible mass
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T1/00—Details of spark gaps
    • H01T1/14—Means structurally associated with spark gap for protecting it against overload or for disconnecting it in case of failure
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
    • H01C7/12—Overvoltage protection resistors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
    • H01H37/76—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
    • H01H37/761—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material with a fusible element forming part of the switched circuit
    • H01H2037/762—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material with a fusible element forming part of the switched circuit using a spring for opening the circuit when the fusible element melts
    • 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
    • H01H71/04—Means for indicating condition of the switching device

Definitions

  • This application relates to the field of surge protectors, and in particular to an overheating and overcurrent trip device and a surge protector.
  • the purpose of this application is to provide a surge protector with dual overheating and overcurrent protection under the premise of ensuring the current flow capacity.
  • an overheating and overcurrent tripping device which includes a frame and a slider, a reed electrode, and a compression spring arranged in the frame.
  • the reed electrode includes a welding section and an elastic connection section.
  • the welding section of the reed electrode is connected to the electrode of the protection device through a fusible alloy.
  • the elastic connecting section of the reed electrode bears the slider and makes the compression spring in a compressed state; when the fusible alloy melts, the spring The leaf electrode bounces up, and the slider moves in the frame under the action of the compression spring to cut off the connection between the leaf electrode and the protection device;
  • a notch is provided at the joint between the welding section of the reed electrode and the elastic connecting section, and when the lightning current exceeds the maximum flow rate or the fault current flows, the reed electrode can break at the notch;
  • the sliding block moves in the frame under the action of the compression spring, and cuts off the connection between the reed electrode and the protection device.
  • the notch is an elongated through groove, or a circular through hole, or an irregularly shaped slot hole.
  • the frame is provided with an electrode opening, the electrode opening has a certain depth, the welding section of the reed electrode and the electrode of the protection device are connected in the space of the electrode opening, and the welding section is recessed in the electrode opening , And make the breaking point of the reed electrode in the space of the electrode opening.
  • the middle part of the slider includes a cavity, and in the working state, the reed electrode penetrates the cavity and is connected with the electrode of the protection device, so as to withstand the slider and make the compression spring in a compressed state; In the failure state, the slider moves under the action of the compression spring, and the cavity wall of the cavity separates the reed electrode and the electrode of the protection device.
  • a notch is provided on the reed electrode, so that the thermal trip device has both overheating and overcurrent protection functions, and further improves the heat transfer speed to the reed when the varistor or discharge tube fails, and accelerates the heat release speed.
  • the present application also provides a surge protector, including a housing, a protection device, a thermal trip protection device, a first electrode and a second electrode.
  • the thermal trip protection device and the protection device are arranged in the housing and pass through the first electrode. An electrode and a second electrode are led out, and the thermal trip protection device is the above-mentioned overheat and overcurrent trip device.
  • the protection device is a varistor and/or a discharge tube.
  • the housing is provided with a see-through window, and the frame and the slider have different colors.
  • the color of the slider can be seen through the see-through window.
  • a protective action occurs, The slider moves, and the color of the frame can be seen through the perspective window.
  • the first electrode and the second electrode are pins, and the surge protector is a pluggable surge protector module, which is used in combination with a base.
  • the surge protector further includes a remote signal switch triggering device.
  • the remote signal switch on the base In the working state, the remote signal switch on the base is closed and the remote signal circuit is turned on; in the failure state, the remote signal switch on the base is disconnected, The remote signal circuit is broken.
  • the surge protector of the present application has both overheating and overcurrent protection functions, can be applied to occasions without a front disconnector, and has more flexible application.
  • Figure 1 is an exploded view of a preferred embodiment of the surge protector of the present application
  • FIGS. 2A and 2B are working state diagrams of the surge protector of the present application.
  • Fig. 3A is a first failure state diagram of the surge protector of the present application.
  • Figure 3B is a second failure state diagram of the surge protector of the present application.
  • Figure 4 is a schematic diagram of the circuit of the present application.
  • Figure 5 is a first embodiment of the application of the surge protector in combination with the base
  • Figure 6 is a second embodiment of the application of the surge protector in combination with the base
  • Fig. 7 is a third embodiment of the application of the surge protector of the present application in combination with a base.
  • the embodiment of the present application discloses a surge protector with overheating and overcurrent protection, which includes a housing 2, a compression spring 3, a slider 4, a reed electrode 6, a frame 8, a pin 7, Pin 9, varistor 10, reed electrode 6 are welded together by fusible alloy and varistor 10.
  • electrode opening 12, welding section 13 of reed electrode 6 and varistor are provided on frame 8
  • the electrodes 11 of 10 are welded together, a notch 5 is provided at the junction of the welding section 13 of the reed electrode 6 and the elastic connecting section, and the housing 2 is provided with a see-through window 1, a pin 7 and a pin 9.
  • the purpose of providing a notch 5 at the connection between the welding section 13 of the reed electrode 6 and the elastic connecting section is to greatly reduce the cross-sectional area of the reed electrode 6 at the notch 5, Thereby reducing its flow capacity, so that when the reed electrode 6 is loaded with a large current, the flow capacity beyond the notch 5 will fuse, causing the reed electrode 6 to break at the position of the notch 5, forming Overcurrent protection. Therefore, the thermal trip device composed of the frame of the original surge protector and the slider, the reed electrode and the compression spring arranged in the frame is upgraded to the overheated and overcurrent trip device.
  • the overheating and overcurrent tripping device is not limited to the surge protector of this structure, and can also be applied to surge protectors of other structural forms.
  • the notch 5 in this embodiment is shown as an example of an elongated through slot.
  • Those skilled in the art should know that the structure of the notch 5 in this embodiment should not be limited to this, as long as it meets the requirements for reducing spring
  • the cross-sectional area of the sheet electrode reduces the flow capacity of all notch structures are alternative solutions, for example, a plurality of slots are arranged to form the notch structure, or slots with irregular shapes are used.
  • the surge protector when the surge protector is in normal operation (ie non-trip state), the reed electrode 6 is pressed down and the varistor 10 is welded in the electrode opening 12 of the frame 8 through fusible alloy, The reed electrode 6 bears against the slider 4, so that the compression spring 3 is in a compressed state.
  • the surge protector has two failure states (ie, trip state). In the first failure state, when the temperature of the varistor 10 reaches the temperature of the fusible alloy, the fusible alloy melts, the reed electrode 6 and the varistor 10 are separated, the reed electrode 6 bounces, and the slider 4 passes through the compression spring 3.
  • the reed electrode 6 can break at the notch 5, the elastic connection section of the reed electrode 6 bounces, and the welding section 13 remains In the electrode opening 12, the slider 4 is pushed to move quickly by the compression spring 3, and the elastic connecting section of the reed electrode 6 and the electrode 11 are separated.
  • the notch 5 also plays a role in hindering heat conduction, which can increase the heat accumulation rate in the fusible alloy solder joint when the varistor 10 fails in the first failure state, and accelerate the heat separation rate.
  • the middle of the slider 4 includes a cavity.
  • the reed electrode 6 penetrates the cavity of the slider 4 and is connected to the electrode of the protection device, thereby supporting the slider 4 and pressing
  • the spring 3 is in a compressed state.
  • the cavity wall of the slider 4 and the notch 5 of the reed electrode 6 collide.
  • the slider 4 moves under the action of the compression spring 3, and the cavity wall of the cavity separates the reed electrode 6 and the electrode of the protection device.
  • the second failure state since the contact surface between the cavity wall of the slider 4 and the reed electrode 6 is small, the slider 4 generates a relatively large pressure on the notch 5 of the reed electrode 6, which can accelerate its fracture.
  • the electrode opening 12 has a certain depth.
  • the housing 2 of the surge protector is also provided with a see-through window 1.
  • the color of the slider 4 can be seen.
  • the slider 4 Move away from the bottom of the perspective window 1, through the perspective window 1, the color of the frame 8 can be seen, indicating that the surge protector 20 has failed and needs to be replaced.
  • the protection device of the surge protector can be a varistor or a discharge tube.
  • the protection device can also be a combination of a varistor and a discharge tube.
  • Figure 1 is an exploded view of the surge protector 20, the frame 8 leads out the pins 7 and 9, and the surge protector 20 is plugged into the base through the pins 7 and 9
  • the clamps of 30A, 30B, and 30C form a pluggable surge protector with the bases 30A, 30B, and 30C.
  • the surge protector can pass a push rod related to the action of the slider 4 and the micro in the base. Move the switch connection. In normal operation, the ejector rod protrudes from the housing 1 and presses the micro switch, the micro switch is closed, and the remote signal circuit is turned on.
  • the slider 4 slides open and the ejector rod retracts into the housing In 1, the micro switch is disconnected, and the remote signal circuit is disconnected.
  • a trigger device is provided on the surge protector, and through the trigger device, in the working state, the remote signal switch on the base is closed and the remote signal circuit is turned on. ; In the failure state, the remote signal switch on the base is disconnected, and the remote signal circuit is broken.
  • the structure of the surge protector in this specific embodiment is a plug-in structure and is used in conjunction with a base.
  • the first embodiment is applied to the matching base, and the surge protector 20 and the base 30A form a protection mode of two modules;
  • the second embodiment is used in conjunction with the base, and the surge protector 20 and the base 30B constitute a protection mode of three modules;
  • the third embodiment is applied to the cooperating base, the surge protector 20 and the base 30C form a protection mode of 4 modules.
  • the surge protector of the present application has a simple structure.
  • the notch of the reed electrode is used to form a tripping device with overheating and overcurrent protection, and the sliding block forms an implementation of two tripping methods.
  • a single varistor design is adopted to improve The current capacity meets the thermal trip current test requirements, and can be assembled with the base into a protection mode of multiple modules.
  • the surge protector of the present application has a simple structure. By arranging notches on the reed electrodes, the thermal tripping device can achieve both overheating and overcurrent protection functions under the condition that the current flow capacity is satisfied, and further improve the varistor or When the discharge tube fails, the heat transfer speed to the reed accelerates the heat separation speed.
  • the device embodiments described above are merely illustrative.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in One place, or it can be distributed to multiple network units. Some or all of the modules may be selected according to actual needs to achieve the objectives of the solutions of the embodiments. Those of ordinary skill in the art can understand and implement it without creative work.
  • any reference signs placed between parentheses should not be constructed as a limitation to the claims.
  • the word “comprising” does not exclude the presence of elements or steps not listed in the claims.
  • the word “a” or “an” preceding an element does not exclude the presence of multiple such elements.
  • the application can be implemented by means of hardware including several different elements and by means of a suitably programmed computer. In the unit claims enumerating several devices, several of these devices may be embodied by the same hardware item.
  • the use of the words first, second, and third, etc. do not indicate any order. These words can be interpreted as names.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fuses (AREA)

Abstract

Disclosed are an overheating and overcurrent tripping device and a surge protector. The overheating and overcurrent tripping device comprises a frame, and a slide block, a spring piece electrode and a compression spring arranged in the frame. In a working state, the spring piece electrode is connected to an electrode of a protection device by means of a fusible alloy, and the spring piece electrode abuts against the slide block and enables the compression spring to be in a compressed state; during thermal tripping, the fusible alloy melts, and the slide block moves in the frame under the action of the compression spring to cut off the connection between the spring piece electrode and a piezoresistor; and the spring piece electrode is provided with a slot, and when a lightning stroke current exceeds the maximum flux or a fault current flows through the spring piece electrode, the spring piece electrode can be broken at the slot, and the slide block moves in the frame under the action of the compression spring to cut off the connection between the spring piece electrode and the piezoresistor. According to the present application, a slot is provided in a spring piece electrode, such that a thermal tripping device has overheating and overcurrent protection functions, and the speed of transferring heat to a spring piece is further increased when a piezoresistor or a discharge tube fails, thereby increasing the thermal tripping speed.

Description

一种过热过流脱扣装置及浪涌保护器Overheating and overcurrent tripping device and surge protector
本申请要求在2019年05月22日提交中国专利局、申请号为201920744699.0、发明名称为“一种过热过流脱扣装置及浪涌保护器”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on May 22, 2019, the application number is 201920744699.0, and the invention title is "A kind of overheating and overcurrent tripping device and surge protector". The reference is incorporated in this application.
技术领域Technical field
本申请涉及浪涌保护器领域，尤其涉及一种过热过流脱扣装置及浪涌保护器。This application relates to the field of surge protectors, and in particular to an overheating and overcurrent trip device and a surge protector.
背景技术Background technique
随着IEC 61643或EN 61643的标准推出模拟失效的测试，原有的技术仅满足热脱离的技术要求，在模拟失效测试时，由于浪涌保护器件，特别是限压型的压敏电阻在短时间出现热击穿，导致试验失败。With the introduction of IEC 61643 or EN 61643 standards for simulated failure testing, the original technology only meets the technical requirements of thermal separation. In the simulated failure test, surge protection devices, especially voltage-limiting varistors, are Thermal breakdown occurred over time, causing the test to fail.
发明内容Summary of the invention
有鉴于现有技术的上述不足，本申请的目的是在保证通流能力的前提下，提供一种具有过热过流双重保护的浪涌保护器。In view of the above-mentioned shortcomings of the prior art, the purpose of this application is to provide a surge protector with dual overheating and overcurrent protection under the premise of ensuring the current flow capacity.
为解决上述技术问题，本申请提供一种过热过流脱扣装置，包括框架和设置于框架内的滑块、簧片电极、压簧，所述簧片电极包括焊接段和弹性连接段，所述的簧片电极的焊接段通过易熔合金与保护器件的电极连接，所述簧片电极的弹性连接段顶住滑块，并使压簧处于压缩状态；当易熔合金熔化，所述簧片电极弹起，所述滑块在压簧的作用下在框架内移动，隔断簧片电极和保护器件的连接；In order to solve the above technical problems, the present application provides an overheating and overcurrent tripping device, which includes a frame and a slider, a reed electrode, and a compression spring arranged in the frame. The reed electrode includes a welding section and an elastic connection section. The welding section of the reed electrode is connected to the electrode of the protection device through a fusible alloy. The elastic connecting section of the reed electrode bears the slider and makes the compression spring in a compressed state; when the fusible alloy melts, the spring The leaf electrode bounces up, and the slider moves in the frame under the action of the compression spring to cut off the connection between the leaf electrode and the protection device;
所述的簧片电极的焊接段和弹性连接段的连接处设置有槽口，当雷击电流超过最大通流量或流过故障电流时，所述的簧片电极能够在槽口处断裂；所述滑块在压簧的作用下在框架内移动，隔断簧片电极和保护器件的连接。A notch is provided at the joint between the welding section of the reed electrode and the elastic connecting section, and when the lightning current exceeds the maximum flow rate or the fault current flows, the reed electrode can break at the notch; The sliding block moves in the frame under the action of the compression spring, and cuts off the connection between the reed electrode and the protection device.
优选地，所述槽口为长条形的通槽，或者圆形的通孔，或者不规则形状的槽孔。Preferably, the notch is an elongated through groove, or a circular through hole, or an irregularly shaped slot hole.
优选地，所述框架上设有电极开口，所述电极开口具有一定的深度，所述簧片电极的焊接段和保护器件的电极在电极开口的空间内连接，焊接段凹陷设置于电极开口内，并使簧片电极的断裂点处于电极开口的空间内。Preferably, the frame is provided with an electrode opening, the electrode opening has a certain depth, the welding section of the reed electrode and the electrode of the protection device are connected in the space of the electrode opening, and the welding section is recessed in the electrode opening , And make the breaking point of the reed electrode in the space of the electrode opening.
优选地，所述压簧为两条，同向作用于滑块的两侧。Preferably, there are two compression springs, which act on both sides of the slider in the same direction.
优选地，所述滑块的中部包括一腔体，在工作状态，所述簧片电极贯穿所述腔体并与保护器件的电极连接，从而顶住滑块，并使压簧处于压缩状态；在失效状态，所述滑块在压簧的作用下移动，所述腔体的腔体壁隔断簧片电极和保护器件的电极。Preferably, the middle part of the slider includes a cavity, and in the working state, the reed electrode penetrates the cavity and is connected with the electrode of the protection device, so as to withstand the slider and make the compression spring in a compressed state; In the failure state, the slider moves under the action of the compression spring, and the cavity wall of the cavity separates the reed electrode and the electrode of the protection device.
本申请通过在簧片电极上设置槽口，从而实现热脱扣装置兼具过热和过流保护功能，并进一步提高压敏电阻或放电管失效时向簧片传热速度，加快热脱离速度。In this application, a notch is provided on the reed electrode, so that the thermal trip device has both overheating and overcurrent protection functions, and further improves the heat transfer speed to the reed when the varistor or discharge tube fails, and accelerates the heat release speed.
本申请还提供一种浪涌保护器，包括壳体、保护器件、热脱扣保护装置、第一电极和第二电极，所述热脱扣保护装置和保护器件设置于壳体内，并通过第一电极和第二电极引出，所述热脱扣保护装置为上述的过热过流脱扣装置。The present application also provides a surge protector, including a housing, a protection device, a thermal trip protection device, a first electrode and a second electrode. The thermal trip protection device and the protection device are arranged in the housing and pass through the first electrode. An electrode and a second electrode are led out, and the thermal trip protection device is the above-mentioned overheat and overcurrent trip device.
优选地，所述保护器件是压敏电阻和/或放电管。Preferably, the protection device is a varistor and/or a discharge tube.
优选地，所述壳体设置有透视窗口，所述框架和所述滑块的颜色不同，当正常工作时，通过所述透视窗口，看到所述滑块的颜色，当发生保护动作时，所述滑块移动，通过所述透视窗口，看到所述框架的颜色。Preferably, the housing is provided with a see-through window, and the frame and the slider have different colors. When working normally, the color of the slider can be seen through the see-through window. When a protective action occurs, The slider moves, and the color of the frame can be seen through the perspective window.
所述第一电极和所述第二电极为插脚，所述浪涌保护器为插拔式的浪涌保护器模块，结合底座应用。The first electrode and the second electrode are pins, and the surge protector is a pluggable surge protector module, which is used in combination with a base.
优选地，所述浪涌保护器还包括遥信开关触发装置，在工作状态，所述底座上遥信开关闭合，遥信电路导通；在失效状态，所述底座上遥信开关断开，遥信电路断路。Preferably, the surge protector further includes a remote signal switch triggering device. In the working state, the remote signal switch on the base is closed and the remote signal circuit is turned on; in the failure state, the remote signal switch on the base is disconnected, The remote signal circuit is broken.
本申请的浪涌保护器，兼具过热和过流保护功能，可应用于没有前置脱离器的场合，应用更灵活。The surge protector of the present application has both overheating and overcurrent protection functions, can be applied to occasions without a front disconnector, and has more flexible application.
上述说明仅是本申请技术方案的概述，为了能够更清楚了解本申请的技术手段，而可依照说明书的内容予以实施，并且为了让本申请的上述和其它目的之一、特征和优点能够更明显易懂，以下特举本申请的具体实施方式。The above description is only an overview of the technical solution of this application. In order to understand the technical means of this application more clearly, it can be implemented in accordance with the content of the specification, and in order to make one of the above and other purposes, features and advantages of this application more obvious. It is easy to understand, the specific implementation methods of this application are cited below.
附图说明Description of the drawings
为了更清楚地说明本申请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一简单地介绍，显而易见地，下面描述中的附图是本申请的一些实施例，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。In order to more clearly describe the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description These are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.
图1是本申请的浪涌保护器的一个较佳实施例的***图；Figure 1 is an exploded view of a preferred embodiment of the surge protector of the present application;
图2A、图2B是本申请的浪涌保护器的工作状态图；2A and 2B are working state diagrams of the surge protector of the present application;
图3A是本申请的浪涌保护器的第一失效状态图；Fig. 3A is a first failure state diagram of the surge protector of the present application;
图3B是本申请的浪涌保护器的第二失效状态图；Figure 3B is a second failure state diagram of the surge protector of the present application;
图4是本申请的电路原理图；Figure 4 is a schematic diagram of the circuit of the present application;
图5是本申请的浪涌保护器结合底座应用的第一实施例；Figure 5 is a first embodiment of the application of the surge protector in combination with the base;
图6是本申请的浪涌保护器结合底座应用的第二实施例；Figure 6 is a second embodiment of the application of the surge protector in combination with the base;
图7是本申请的浪涌保护器结合底座应用的第三实施例。Fig. 7 is a third embodiment of the application of the surge protector of the present application in combination with a base.
具体实施例Specific embodiment
为进一步说明各实施例，本申请提供有附图。这些附图为本申请揭露内容的一部分，其主要用以说明实施例，并可配合说明书的相关描述来解释实施例的运作原理。配合参考这些内容，本领域普通技术人员应能理解其他可能的实施方式以及本申请的优点。图中的组件并未按比例绘制，而类似的组件符号通常用来表示类似的组件。To further illustrate the various embodiments, this application provides drawings. These drawings are a part of the disclosure of the application, which are mainly used to illustrate the embodiments, and can cooperate with the relevant description in the specification to explain the operating principles of the embodiments. With reference to these contents, those of ordinary skill in the art should be able to understand other possible implementations and the advantages of the present application. The components in the figure are not drawn to scale, and similar component symbols are usually used to indicate similar components.
现结合附图和具体实施方式对本申请进一步说明。This application will now be further described in conjunction with the drawings and specific implementations.
如图1所示，本申请的实施例公开了一种具有过热过流保护的浪涌保护器，包括壳体2、压簧3、滑块4、簧片电极6、框架8、插脚7、插脚9、压敏电阻10，簧片电极6通过易熔合金和压敏电阻10焊接在一起，具体的，在框架8上设置有电极开口12，簧片电极6的焊接段13和压敏电阻10的电极11焊接在一起，在簧片电极6的焊接段13和弹性连接段的连接处设置有槽口5，壳体2上设置有透视窗1，插脚7和插脚9。该实施例中在簧片电极6的焊接段13和弹性连接段的连接处上设置有槽口5的目的在于：很大程度上减少了簧片电极6在该槽口5处的横断面积，从而降低了其通流能力，从而在簧片电极6加载了大电流的情况下，超出了槽口5处的通流能力发生熔断而导致簧片电极6能够在槽口5的位置断裂，形成过流保护。从而将原浪涌保护器的框架和设置于框架内的滑块、簧片电极、压簧组成的热脱扣装置提升为过热过流脱扣装置。该过热过流脱扣装置不局限于本结构的浪涌保护器，也可应用于其它结构形式的浪涌保护器。As shown in Figure 1, the embodiment of the present application discloses a surge protector with overheating and overcurrent protection, which includes a housing 2, a compression spring 3, a slider 4, a reed electrode 6, a frame 8, a pin 7, Pin 9, varistor 10, reed electrode 6 are welded together by fusible alloy and varistor 10. Specifically, electrode opening 12, welding section 13 of reed electrode 6 and varistor are provided on frame 8 The electrodes 11 of 10 are welded together, a notch 5 is provided at the junction of the welding section 13 of the reed electrode 6 and the elastic connecting section, and the housing 2 is provided with a see-through window 1, a pin 7 and a pin 9. In this embodiment, the purpose of providing a notch 5 at the connection between the welding section 13 of the reed electrode 6 and the elastic connecting section is to greatly reduce the cross-sectional area of the reed electrode 6 at the notch 5, Thereby reducing its flow capacity, so that when the reed electrode 6 is loaded with a large current, the flow capacity beyond the notch 5 will fuse, causing the reed electrode 6 to break at the position of the notch 5, forming Overcurrent protection. Therefore, the thermal trip device composed of the frame of the original surge protector and the slider, the reed electrode and the compression spring arranged in the frame is upgraded to the overheated and overcurrent trip device. The overheating and overcurrent tripping device is not limited to the surge protector of this structure, and can also be applied to surge protectors of other structural forms.
该实施例中的槽口5是以一长条形的通槽为例进行展示，本领域技术人 员须知，该实施例的槽口5的结构形式不应当以此为限，只要符合能够减少簧片电极的横断面积以降低了其通流能力的一切槽口结构均为可以替代的方案，例如采用多个槽孔排列形成该槽口结构，或者采用不规则形状的槽孔等等。The notch 5 in this embodiment is shown as an example of an elongated through slot. Those skilled in the art should know that the structure of the notch 5 in this embodiment should not be limited to this, as long as it meets the requirements for reducing spring The cross-sectional area of the sheet electrode reduces the flow capacity of all notch structures are alternative solutions, for example, a plurality of slots are arranged to form the notch structure, or slots with irregular shapes are used.
如图2A和图2B所示，浪涌保护器在正常工作(即非脱扣状态)时，簧片电极6下压和压敏电阻10在框架8的电极开口12内通过易熔合金焊接，簧片电极6顶住滑块4，使压簧3处于压缩状态。如图3A和图3B所示，本浪涌保护器具有两种失效状态(即脱扣状态)。第一失效状态，当压敏电阻10的温度达到易熔合金的温度时，易熔合金熔化，簧片电极6和压敏电阻10分离，簧片电极6弹起，滑块4通过压簧3推动快速移动，隔断簧片电极6和电极11。第二失效状态，当雷击电流超过最大通流量的10％或者***故障电流流过时，簧片电极6可在槽口5处断裂，簧片电极6的弹性连接段弹起，焊接段13留在电极开口12内，滑块4通过压簧3推动快速移动，隔断簧片电极6的弹性连接段和电极11。槽口5同时起到阻碍热传导的作用，可提高第一失效状态下压敏电阻10失效时热量在易熔合金焊接点的蓄积速度，加快热脱离速度。As shown in Figures 2A and 2B, when the surge protector is in normal operation (ie non-trip state), the reed electrode 6 is pressed down and the varistor 10 is welded in the electrode opening 12 of the frame 8 through fusible alloy, The reed electrode 6 bears against the slider 4, so that the compression spring 3 is in a compressed state. As shown in Figs. 3A and 3B, the surge protector has two failure states (ie, trip state). In the first failure state, when the temperature of the varistor 10 reaches the temperature of the fusible alloy, the fusible alloy melts, the reed electrode 6 and the varistor 10 are separated, the reed electrode 6 bounces, and the slider 4 passes through the compression spring 3. Push to move quickly to separate the reed electrode 6 and the electrode 11. In the second failure state, when the lightning current exceeds 10% of the maximum flow rate or the system fault current flows, the reed electrode 6 can break at the notch 5, the elastic connection section of the reed electrode 6 bounces, and the welding section 13 remains In the electrode opening 12, the slider 4 is pushed to move quickly by the compression spring 3, and the elastic connecting section of the reed electrode 6 and the electrode 11 are separated. The notch 5 also plays a role in hindering heat conduction, which can increase the heat accumulation rate in the fusible alloy solder joint when the varistor 10 fails in the first failure state, and accelerate the heat separation rate.
在本具体实施例中，滑块4的中部包括一腔体，在工作状态，簧片电极6贯穿滑块4的腔体并与保护器件的电极连接，从而顶住滑块4，并使压簧3处于压缩状态，此时，滑块4的腔体壁和簧片电极6的槽口5处抵触。在第一失效状态，滑块4在压簧3的作用下移动，腔体的腔体壁隔断簧片电极6和保护器件的电极。在第二失效状态，由于滑块4的腔体壁和簧片电极6的接触面较小，滑块4对簧片电极6的槽口5处产生较大的压力，可加速其断裂。In this specific embodiment, the middle of the slider 4 includes a cavity. In the working state, the reed electrode 6 penetrates the cavity of the slider 4 and is connected to the electrode of the protection device, thereby supporting the slider 4 and pressing The spring 3 is in a compressed state. At this time, the cavity wall of the slider 4 and the notch 5 of the reed electrode 6 collide. In the first failure state, the slider 4 moves under the action of the compression spring 3, and the cavity wall of the cavity separates the reed electrode 6 and the electrode of the protection device. In the second failure state, since the contact surface between the cavity wall of the slider 4 and the reed electrode 6 is small, the slider 4 generates a relatively large pressure on the notch 5 of the reed electrode 6, which can accelerate its fracture.
为保证簧片电极6断裂时，断裂的焊接段13不会影响滑块4的移动，在本实施例中，电极开口12具有一定的深度，所述簧片电极的焊接段和保护器件的电极在电极开口所在的空间内连接，焊接段13凹陷设置于电极开口12内，并使簧片电极的断裂点处于电极开口的空间内。In order to ensure that when the reed electrode 6 is broken, the broken welded section 13 will not affect the movement of the slider 4. In this embodiment, the electrode opening 12 has a certain depth. The welded section of the reed electrode and the electrode of the protection device Connecting in the space where the electrode opening is located, the welding section 13 is recessed and arranged in the electrode opening 12, and the breaking point of the reed electrode is located in the space of the electrode opening.
如图1所示，浪涌保护器的壳体2上还设有透视窗1，当正常工作时，通过透视窗1，能够看到滑块4的颜色，当发生保护动作时，滑块4移动离 开透视窗1下方，通过透视窗1，能够看到框架8的颜色，表示浪涌保护器20已失效，需要更换。如图4所示，本浪涌保护器的保护器件可以是压敏电阻或放电管，如本技术领域的公知常识，该保护器件也可以是压敏电阻和放电管的组合。As shown in Figure 1, the housing 2 of the surge protector is also provided with a see-through window 1. When working normally, through the see-through window 1, the color of the slider 4 can be seen. When a protective action occurs, the slider 4 Move away from the bottom of the perspective window 1, through the perspective window 1, the color of the frame 8 can be seen, indicating that the surge protector 20 has failed and needs to be replaced. As shown in FIG. 4, the protection device of the surge protector can be a varistor or a discharge tube. As known in the art, the protection device can also be a combination of a varistor and a discharge tube.
结合图1、图5、图6、图7所示，图1是浪涌保护器20的***图，框架8引出插脚7和插脚9，浪涌保护器20通过插脚7和9插接在底座30A、30B、30C的卡箍上，与底座30A、30B、30C构成插拔式浪涌保护器，此时，浪涌保护器可通过一个与滑块4动作相关的顶杆与底座中的微动开关连接。正常工作时，顶杆凸出壳体1并压制微动开关，微动开关闭合，遥信电路导通，当雷击导致浪涌保护器失效时，滑块4滑开，顶杆缩回壳体1内，微动开关断开，遥信电路断路。这属于本领域技术人员的常规技术手段，概要的说，就是浪涌保护器上设置有一触发装置，并通过该触发装置，在工作状态，所述底座上遥信开关闭合，遥信电路导通；在失效状态，所述底座上遥信开关断开，遥信电路断路。As shown in Figure 1, Figure 5, Figure 6, Figure 7, Figure 1 is an exploded view of the surge protector 20, the frame 8 leads out the pins 7 and 9, and the surge protector 20 is plugged into the base through the pins 7 and 9 The clamps of 30A, 30B, and 30C form a pluggable surge protector with the bases 30A, 30B, and 30C. At this time, the surge protector can pass a push rod related to the action of the slider 4 and the micro in the base. Move the switch connection. In normal operation, the ejector rod protrudes from the housing 1 and presses the micro switch, the micro switch is closed, and the remote signal circuit is turned on. When the surge protector fails due to a lightning strike, the slider 4 slides open and the ejector rod retracts into the housing In 1, the micro switch is disconnected, and the remote signal circuit is disconnected. This is a conventional technical means of those skilled in the art. In summary, a trigger device is provided on the surge protector, and through the trigger device, in the working state, the remote signal switch on the base is closed and the remote signal circuit is turned on. ; In the failure state, the remote signal switch on the base is disconnected, and the remote signal circuit is broken.
本具体实施例的浪涌保护器结构为一插拔式结构，配合底座应用。The structure of the surge protector in this specific embodiment is a plug-in structure and is used in conjunction with a base.
如图5所示的配合底座应用第一实施例，浪涌保护器20与底座30A构成2个模块的保护模式；As shown in FIG. 5, the first embodiment is applied to the matching base, and the surge protector 20 and the base 30A form a protection mode of two modules;
如图6所示的配合底座应用第二实施例，浪涌保护器20与底座30B构成3个模块的保护模式；As shown in FIG. 6, the second embodiment is used in conjunction with the base, and the surge protector 20 and the base 30B constitute a protection mode of three modules;
如图7所示的配合底座应用第三实施例，浪涌保护器20与底座30C构成4个模块的保护模式。As shown in FIG. 7, the third embodiment is applied to the cooperating base, the surge protector 20 and the base 30C form a protection mode of 4 modules.
本申请的浪涌保护器结构简单，利用簧片电极的槽口形成兼具过热过流保护的脱扣装置，和滑块形成两种脱扣方式的实施方式，采用单一压敏电阻设计，提高通流能力，满足热脱扣电流试验要求，可与底座组装成多个模块的保护模式。The surge protector of the present application has a simple structure. The notch of the reed electrode is used to form a tripping device with overheating and overcurrent protection, and the sliding block forms an implementation of two tripping methods. A single varistor design is adopted to improve The current capacity meets the thermal trip current test requirements, and can be assembled with the base into a protection mode of multiple modules.
本申请的浪涌保护器结构简单，通过在簧片电极上设置槽口，在满足通流能力的情况下，实现热脱扣装置兼具过热和过流保护功能，并进一步提高压敏电阻或放电管失效时向簧片传热速度，加快热脱离速度。The surge protector of the present application has a simple structure. By arranging notches on the reed electrodes, the thermal tripping device can achieve both overheating and overcurrent protection functions under the condition that the current flow capacity is satisfied, and further improve the varistor or When the discharge tube fails, the heat transfer speed to the reed accelerates the heat separation speed.
尽管结合优选实施方案具体展示和介绍了本申请，但所属领域的技术人员应该明白，在不脱离所附权利要求书所限定的本申请的精神和范围内，在形式上和细节上可以对本申请做出各种变化，均为本申请的保护范围。Although this application has been specifically shown and introduced in conjunction with the preferred embodiments, those skilled in the art should understand that, within the spirit and scope of the application defined by the appended claims, the application can be modified in form and detail. Various changes are within the protection scope of this application.
以上所描述的装置实施例仅仅是示意性的，其中所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部模块来实现本实施例方案的目的。本领域普通技术人员在不付出创造性的劳动的情况下，即可以理解并实施。The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in One place, or it can be distributed to multiple network units. Some or all of the modules may be selected according to actual needs to achieve the objectives of the solutions of the embodiments. Those of ordinary skill in the art can understand and implement it without creative work.
本文中所称的“一个实施例”、“实施例”或者“一个或者多个实施例”意味着，结合实施例描述的特定特征、结构或者特性包括在本申请的至少一个实施例中。此外，请注意，这里“在一个实施例中”的词语例子不一定全指同一个实施例。The “one embodiment”, “an embodiment” or “one or more embodiments” referred to herein means that a specific feature, structure, or characteristic described in combination with the embodiment is included in at least one embodiment of the present application. In addition, please note that the word examples "in one embodiment" herein do not necessarily all refer to the same embodiment.
在此处所提供的说明书中，说明了大量具体细节。然而，能够理解，本申请的实施例可以在没有这些具体细节的情况下被实践。在一些实例中，并未详细示出公知的方法、结构和技术，以便不模糊对本说明书的理解。In the instructions provided here, a lot of specific details are explained. However, it can be understood that the embodiments of the present application can be practiced without these specific details. In some instances, well-known methods, structures and technologies are not shown in detail, so as not to obscure the understanding of this specification.
在权利要求中，不应将位于括号之间的任何参考符号构造成对权利要求的限制。单词“包含”不排除存在未列在权利要求中的元件或步骤。位于元件之前的单词“一”或“一个”不排除存在多个这样的元件。本申请可以借助于包括有若干不同元件的硬件以及借助于适当编程的计算机来实现。在列举了若干装置的单元权利要求中，这些装置中的若干个可以是通过同一个硬件项来具体体现。单词第一、第二、以及第三等的使用不表示任何顺序。可将这些单词解释为名称。In the claims, any reference signs placed between parentheses should not be constructed as a limitation to the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of multiple such elements. The application can be implemented by means of hardware including several different elements and by means of a suitably programmed computer. In the unit claims enumerating several devices, several of these devices may be embodied by the same hardware item. The use of the words first, second, and third, etc. do not indicate any order. These words can be interpreted as names.

Claims (10)

  1. 一种过热过流脱扣装置，包括框架和设置于框架内的滑块、簧片电极、压簧，所述簧片电极包括焊接段和弹性连接段，所述的簧片电极的焊接段通过易熔合金与保护器件的电极连接，所述簧片电极的弹性连接段顶住滑块，并使压簧处于压缩状态；当易熔合金熔化，所述簧片电极弹起，所述滑块在压簧的作用下在框架内移动，隔断簧片电极和保护器件的连接；其特征在于：所述的簧片电极的焊接段和弹性连接段的连接处设置有槽口，当雷击电流超过最大通流量时，所述的簧片电极能够在槽口处断裂；所述滑块在压簧的作用下在框架内移动，隔断簧片电极和保护器件电极的连接。An overheating and overcurrent tripping device includes a frame and a slider, a reed electrode, and a compression spring arranged in the frame. The reed electrode includes a welding section and an elastic connecting section. The welding section of the reed electrode passes The fusible alloy is connected to the electrode of the protection device, and the elastic connecting section of the reed electrode bears against the slider and makes the compression spring in a compressed state; when the fusible alloy melts, the reed electrode bounces up, and the slider Under the action of the compression spring, it moves in the frame to cut off the connection between the reed electrode and the protection device; it is characterized in that: the joint between the welding section of the reed electrode and the elastic connecting section is provided with a notch, when the lightning current exceeds At the maximum flow rate, the reed electrode can be broken at the notch; the sliding block moves in the frame under the action of the compression spring to cut off the connection between the reed electrode and the electrode of the protection device.
  2. 如权利要求1所述的过热过流脱扣装置，其特征在于：所述槽口为长条形的通槽，或者圆形的通孔，或者是不规则形状的通槽。The overheating and overcurrent tripping device according to claim 1, wherein the notch is an elongated through groove, or a circular through hole, or an irregularly shaped through groove.
  3. 如权利要求1所述的过热过流脱扣装置，其特征在于：所述框架上设有电极开口，所述电极开口具有一定的深度，所述簧片电极的焊接段和保护器件的电极在电极开口的空间内连接，焊接段凹陷设置于电极开口内，并使簧片电极的断裂点处于电极开口的空间内。The overheating and overcurrent tripping device according to claim 1, wherein the frame is provided with an electrode opening, the electrode opening has a certain depth, and the welding section of the reed electrode and the electrode of the protection device are in The electrode opening is connected in the space, the welding section is recessed in the electrode opening, and the breaking point of the reed electrode is in the space of the electrode opening.
  4. 如权利要求1所述的过热过流脱扣装置，其特征在于：所述压簧为两条，同向作用于滑块的两侧。The overheating and overcurrent tripping device according to claim 1, wherein there are two compression springs, which act on both sides of the slider in the same direction.
  5. 如权利要求1所述的过热过流脱扣装置，其特征在于：所述滑块的中部包括一腔体，在工作状态，所述簧片电极贯穿所述腔体并与保护器件的电极连接，从而顶住滑块，并使压簧处于压缩状态；在失效状态，所述滑块在压簧的作用下移动，所述腔体的腔体壁隔断簧片电极和保护器件的电极。The overheating and overcurrent tripping device according to claim 1, wherein the middle part of the slider includes a cavity, and in the working state, the reed electrode penetrates the cavity and is connected to the electrode of the protection device , So as to withstand the slider and make the compression spring in a compressed state; in the failure state, the slider moves under the action of the compression spring, and the cavity wall of the cavity separates the reed electrode and the electrode of the protection device.
  6. 一种浪涌保护器，包括壳体、保护器件、热脱扣保护装置、第一电极和第二电极，所述热脱扣保护装置和保护器件设置于壳体内，并通过第一电极和第二电极引出，其特征在于：所述热脱扣保护装置为权利要求1-5任一项所述的过热过流脱扣装置。A surge protector includes a housing, a protection device, a thermal trip protection device, a first electrode and a second electrode. The thermal trip protection device and the protection device are arranged in the housing and pass through the first electrode and the second electrode. The two-electrode extraction is characterized in that the thermal trip protection device is the overheated and overcurrent trip device according to any one of claims 1-5.
  7. 如权利要求6所述的浪涌保护器，其特征在于：所述保护器件是压敏电阻和/或放电管。8. The surge protector of claim 6, wherein the protection device is a varistor and/or a discharge tube.
  8. 如权利要求6所述的浪涌保护器，其特征在于：所述壳体设置有透视窗口，所述框架和所述滑块的颜色不同，当正常工作时，通过所述透视窗口， 看到所述滑块的颜色，当发生保护动作时，所述滑块移动，通过所述透视窗口，看到所述框架的颜色。The surge protector of claim 6, wherein the housing is provided with a see-through window, and the frame and the slider have different colors. When working normally, you can see through the see-through window The color of the slider, when a protective action occurs, the slider moves, and the color of the frame can be seen through the perspective window.
  9. 如权利要求6所述的浪涌保护器，其特征在于：所述第一电极和所述第二电极为插脚，所述浪涌保护器为插拔式的浪涌保护器模块，结合底座应用。The surge protector of claim 6, wherein the first electrode and the second electrode are pins, and the surge protector is a pluggable surge protector module, which is used in combination with a base .
  10. 如权利要求9所述的浪涌保护器，其特征在于：所述浪涌保护器还包括遥信开关触发装置，在工作状态，所述底座上遥信开关闭合，遥信电路导通；在失效状态，所述底座上遥信开关断开，遥信电路断路。The surge protector according to claim 9, characterized in that: the surge protector further comprises a remote signal switch triggering device, in the working state, the remote signal switch on the base is closed, and the remote signal circuit is turned on; In the failure state, the remote signal switch on the base is disconnected, and the remote signal circuit is broken.
PCT/CN2020/091555 2019-05-22 2020-05-21 Overheating and overcurrent tripping device and surge protector WO2020233667A1 (en)

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CN112845168A (en) * 2021-01-05 2021-05-28 常熟市天银机电股份有限公司 Automatic elasticity testing machine for movable contact spring piece of starting protector of motor of refrigeration compressor
CN114362095A (en) * 2021-12-31 2022-04-15 安徽金力电气技术有限公司 Surge protector with special protection function
CN114362100A (en) * 2022-01-30 2022-04-15 天津市中力神盾电子科技有限公司 Plug-in judging method and surge protector
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CN213071021U (en) * 2020-08-19 2021-04-27 厦门赛尔特电子有限公司 Cartridge core module, plug-in module and surge protection device
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CN113130223B (en) * 2021-03-01 2022-11-25 重庆先进光电显示技术研究院 Mechanical switching equipment and anti-surge circuit

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CN114362100A (en) * 2022-01-30 2022-04-15 天津市中力神盾电子科技有限公司 Plug-in judging method and surge protector

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