WO2011091738A1 - 一种插座 - Google Patents

一种插座 Download PDF

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Publication number
WO2011091738A1
WO2011091738A1 PCT/CN2011/070503 CN2011070503W WO2011091738A1 WO 2011091738 A1 WO2011091738 A1 WO 2011091738A1 CN 2011070503 W CN2011070503 W CN 2011070503W WO 2011091738 A1 WO2011091738 A1 WO 2011091738A1
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WO
WIPO (PCT)
Prior art keywords
socket
metal
outer casing
bottom plate
thermistor
Prior art date
Application number
PCT/CN2011/070503
Other languages
English (en)
French (fr)
Inventor
冯介禹
Original Assignee
深大宇电器(深圳)有限公司
大宇电业有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深大宇电器(深圳)有限公司, 大宇电业有限公司 filed Critical 深大宇电器(深圳)有限公司
Publication of WO2011091738A1 publication Critical patent/WO2011091738A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
    • H01R13/6666—Structural association with built-in electrical component with built-in electronic circuit with built-in overvoltage protection
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/70—Structural association with built-in electrical component with built-in switch
    • H01R13/713—Structural association with built-in electrical component with built-in switch the switch being a safety switch
    • H01R13/7137—Structural association with built-in electrical component with built-in switch the switch being a safety switch with thermal interrupter
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/76—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure with sockets, clips or analogous contacts and secured to apparatus or structure, e.g. to a wall
    • H01R24/78—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure with sockets, clips or analogous contacts and secured to apparatus or structure, e.g. to a wall with additional earth or shield contacts

Definitions

  • the utility model relates to a power socket, in particular to a power socket with a protection function.
  • the traditional power socket whether it is a wall power supply board or a multi-function socket or a variety of plug-in, whether it is a single-phase power socket with or without a grounding wire, or a three-phase socket, the structure includes the outer casing.
  • the metal contacts in the jack, the jack, and the power access components (power cord or pin) that protrude into the housing.
  • the socket itself has no temperature protection and current protection. When the ambient temperature rises and overheats, or the current flows. When the time is large, such a socket cannot automatically disconnect the power supply and cannot be protected. Wear or damage during the use of various household appliances and factory equipment, resulting in loose plugs, excessive load, wire wear, damage to household appliances and a series of faults in the factory equipment may cause circuit heating or excessive current, thus burning electrical equipment It may even cause an electrical fire.
  • the technical problem to be solved by the utility model is to provide an over-temperature and over-current protection power socket.
  • the present invention provides a socket, including a housing, a power access component, and a jack, wherein the housing is further provided with a temperature current protector, and the temperature current protector is connected in series. Between the metal contacts in the live wire jack of the socket and the live wire portion of the power supply access component.
  • the temperature current protector includes a bimetal and a thermistor connected in parallel at both ends thereof.
  • the temperature current protector is provided with a metal outer casing as an electrical connection, and the metal contacts of the live wire socket are electrically connected to the metal outer casing by wires or directly to the electrical connection or directly welded together.
  • the socket is a wall power plug or a multi-function power socket; the power access component is a power cord of an external power source.
  • the socket is a plug-in socket; the power access component is a pin of an external power source.
  • the socket is a single-phase power socket with a grounding wire or a single-phase power socket without a ground wire or a three-phase power socket.
  • the temperature current protector is provided with a metal bottom plate and a metal outer casing having a groove opposite to the groove opening of the outer casing and being combined with the outer casing to form a cavity, the bottom plate and the outer casing Insulated with insulating paper, the cavity has a built-in bimetal, one end of the bimetal is electrically connected to the metal casing, and the other end is provided with a movable contact, and the bottom plate is fixedly provided with a a static contact protruding into the cavity, the static contact corresponding to the movable contact through an insulating paper on one side of the bottom plate, the movable contact being electrically connected to the static contact in a normal state, and being a double
  • the temperature of the metal piece is higher than the set value, the static contact is disconnected and the electrical connection is disconnected; one side of the thermistor is closely attached and electrically connected to the side of the bottom plate away from the outer casing, and the thermistor is further One side is electrically connected to a metal dome,
  • the electrical connection end is a length of wire, one end of which is soldered to the bottom plate or electrically connected to the bottom plate through a terminal card on the bottom plate, and the other end is electrically connected to the live part of the power supply access part.
  • the thermistor has a rectangular parallelepiped shape, and the middle portion of the metal dome is bent into a shape matching the shape of the thermistor, partially surrounding the thermistor, and the ends of the metal elastic piece are bent and fastened to the outer casing direction.
  • the insulating paper between the bottom plate and the outer casing is bent toward a side of the bottom plate away from the outer casing, and both ends are lifted and clamped on both sides of the thermistor.
  • the bottom plate of the temperature current protector adopts a cold-rolled plate of iron-nickel-zinc alloy; the outer casing is a deep-drawn stretch cold-rolled plate made of iron-nickel-zinc alloy; the metal shrapnel is made of stainless steel.
  • the temperature current protector can protect the electrical connection between the metal contacts of the live wire jack and the live part of the power access component.
  • the utility model adopts a protector in which the thermistor and the bimetal are connected in series in the fire line of the socket, the thermistor has a certain conductivity, and the resistance of the thermistor is large.
  • the bimetal When the bimetal is overheated, the current is self-heating.
  • the sensitive resistor passes, the resistance value becomes rapidly increased, so that the current in the loop is small, which is insufficient to drive the load, and the thermistor generates heat after being energized, and the heat is transferred to the bimetal, so that the bimetal cannot be cooled and reset, and the power supply must be cut off.
  • the thermistor is powered off and stops heating. Wait a few minutes, the bimetal is cooled down and then the socket power is turned on again.
  • the bimetal can be reset, which avoids the natural temperature drop of the bimetal and the socket is automatically reset. That is, the function of power-off can be reset, which not only protects the circuit from overheating, but also improves the safety of use. Since the thermistor PTC is self-heated and the resistance value is multiplied to achieve protection, the current protection of the circuit after the thermistor is used is more sensitive.
  • the temperature current protector adopts a conductive metal casing, a metal base plate and a metal dome as a conductor, and uses insulating paper to insulate the bottom plate and the outer casing, and adopts a compact and ingenious structure to connect the thermistor in parallel.
  • the two ends of the metal plate switch form a compact protector for easy access to the socket housing, which can not increase the volume of the most commonly used common socket, wherein the thermistor is close to the bimetal, so that the thermistor The heat generated by the energization can be quickly transferred to the bimetal, and the protection effect is faster and better.
  • the metal casing of the current temperature protector When the metal contact of the live wire jack is directly connected to the metal casing of the current temperature protector, the metal casing is directly connected to the electrical connection or even welded together, and there is no medium in the middle, thereby ensuring the directness and high efficiency of heat conduction, and the over-temperature and over-current protection response. Faster and more sensitive.
  • the compact structure makes it suitable for power sockets of various shapes and configurations.
  • FIG. 1 is a circuit diagram of a temperature current protector of the present invention.
  • FIG. 2 is a front elevational view of the temperature current protector within the socket of the present invention.
  • FIG 3 is a side view of a temperature current protector in the socket of the present invention.
  • Fig. 4 is a cross-sectional view taken along line A-A of Fig. 2;
  • Fig. 5 is a front elevational view of the wall power supply board of the first embodiment.
  • Figure 6 is a cross-sectional view taken along line B-B of Figure 5;
  • Figure 7 is a front elevational view of the multi-function power outlet of the second embodiment.
  • Figure 8 is a cross-sectional view taken along line C-C of Figure 7.
  • Figure 9 is a front elevational view of the single-phase power outlet socket of the third embodiment without a grounding wire.
  • Figure 10 is a cross-sectional view taken along line D-D of Figure 9.
  • Figure 11 is a front elevational view of the single-phase power supply plug-in socket with a grounding wire of the fourth embodiment.
  • Figure 12 is a cross-sectional view taken along line E-E of Figure 11;
  • Figure 13 is a front elevational view of the three-phase power outlet socket of the fifth embodiment.
  • Figure 14 is a cross-sectional view taken along line F-F of Figure 13;
  • the wall power supply board 200 of this embodiment As shown in FIG. 5 and FIG. 6, it is the wall power supply board 200 of this embodiment, which has two holes for insertion and three holes.
  • the card includes a plastic casing 1, a live wire 2 and a neutral wire 3 as a power supply line for the power supply access component (may also be a plug-in board with a ground wire, a ground wire is not shown), and a live wire plug.
  • a temperature current protector 100 is further disposed in the housing, and the metal casing 20 of the temperature current protector 100 is closely attached or soldered to the hot metal contact 7-1 as an electrical connection component, and the temperature current protector 100
  • the bottom plate 10 is soldered with a length of wire as the electrical connection end 11, or a wire is connected through the bottom plate terminal card 14 as an electrical connection end 11 (see FIG. 2-4), and the wire is electrically connected to the live wire 2 of the power line.
  • the temperature current protector is connected in series between the live metal contact 7-1 in the live line jack 7 of the socket and the live line portion of the power supply access part.
  • the temperature current protector 100 is not cut away in the schematic diagram of FIG. 6.
  • the temperature and current protector 100 is a protection device that can protect the circuit from excessive current and circuit or ambient temperature. As shown in Figure 2-4, it has a rectangular flat conductive metal base plate 10 and a
  • the conductive metal casing 20 is made of a cold-rolled plate of iron-nickel-zinc alloy, has good electrical and thermal conductivity, and does not rust, and the outer casing 20 is made of deep-drawn and drawn cold-rolled iron-nickel-zinc alloy material.
  • the metal casing 20 has a groove 22 with a notch facing the bottom plate. The bottom plate 10 and the casing 20 are fastened into a cavity.
  • the bottom plate and the casing are insulated by an insulating paper 30, and the bimetal 40 is disposed at the One end of the cavity is electrically connected to the outer casing 20.
  • the electrical connection in the embodiment is realized: the outer surface of the outer casing 20 is recessed toward the inner surface toward the inner surface to form a contact 23 protruding toward the cavity.
  • a corresponding one end of the bimetal 40 is welded with a conductive fixing nail 41 which is welded to the contact 23.
  • the other end of the bimetal 40 is a movable contact 42, and the bottom plate 10 is fixedly electrically connected to a conductive static contact 12 protruding toward the cavity, and the static contact 12 passes through the side of the bottom plate.
  • the insulating paper 30 corresponds to the movable contact 42.
  • the movable contact 42 is electrically connected to the stationary contact 12 in a normal state, and is disconnected from the stationary contact when the bimetal temperature is higher than a set value.
  • the outer surface of the outer casing is further recessed to form a protrusion 25 protruding toward the inner cavity.
  • the end of the bimetal moving contact is topped.
  • the protrusions 25 do not abut against the inner surface of the outer casing, and the contact surface is small to facilitate resetting.
  • One side of a rectangular parallelepiped PTC thermistor 50 is electrically connected to the bottom plate 10 on the side of the bottom plate away from the outer casing 20, and the other side of the PTC thermistor 50 is provided with a conductive metal of stainless steel material.
  • the central portion of the metal dome 60 is bent into a rectangular groove 61 adapted to the outer shape of the thermistor 50, partially enclosed and closely attached to the thermistor to form an electrical connection with the thermistor, and the metal dome 60
  • the two ends 62 are bent in the direction of the outer casing and fastened to the two sides of the outer casing, thereby achieving electrical connection with the outer casing, and pressing the thermistor, the bottom plate, the insulating paper and the outer casing tightly together to form a compact structure.
  • the insulating paper 30 between the bottom plate and the outer casing has a rectangular shape and is made of a polyester composite material, and has a certain hardness.
  • the insulating paper is bent toward the outer surface of the bottom plate 10 to surround the bottom plate portion, and the bottom plate is not surrounded.
  • the two ends 31 of the insulating paper are lifted, and the thermistor 50 is clamped between the two ends of the lifting, and has a certain fixing effect, as shown in FIG.
  • one end extends integrally from the metal casing 20, and a casing wiring card 24 is disposed thereon.
  • the bottom plate 10 also extends out of one end, and a wiring card 14 is also disposed thereon for the card. Connect the wires.
  • the above structure of the temperature current protector forms a circuit connection as shown in FIG. 1, that is, the thermistor 50 is connected in parallel with the bimetal 40.
  • the multi-function power socket 300 of the present invention is the same as the first embodiment, and the live metal contact 7-1 and the power line of the power line in the three three-hole inserted fire line jacks 7 are as shown in the first embodiment.
  • a temperature and current protector similar to that of Embodiment 1 is connected in series between 2.
  • the single-phase power socket 400 without a ground wire of the present invention is a plug.
  • the utility model comprises a plastic casing 1 and a fire pin 4 and a neutral pin 5 as power supply access parts, and a fire wire jack 7, a neutral wire jack 8, and a ground wire jack 9, each jack is provided therein.
  • a temperature current protector similar to that of the first embodiment is connected in series between the live metal contact 7-1 and the live pin 4 in the live line jack 7.
  • the single-phase power socket 500 with grounding of the utility model is also a plug-in. It comprises a plastic housing 1 and a live pin 4 and a neutral pin 5, a ground pin 6 as a power supply access component, and a live wire jack 7, a neutral jack 8, and a ground jack 9, each The metal jacks are provided in the jacks to be electrically connected with the plug terminals.
  • a temperature current protector similar to that of the first embodiment is connected in series between the live metal contact 7-1 and the live pin 4 in the live wire jack 7.
  • the three-phase power socket 600 of the present invention is also a plug. It comprises a plastic housing 1 and two live pins 4 and a neutral pin 5 as power supply access parts, as well as two live wires 7 and a neutral jack 8, each of which is provided There are metal contacts that are electrically connected to the plug terminals. Similar to the above embodiment, a temperature current protector similar to that of the first embodiment is connected in series between the live metal contact 7-1 in any one of the live line jacks 7 and the corresponding live pin 4.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Thermally Actuated Switches (AREA)

Description

一种插座 一种插座
技术领域
本实用新型涉及一种电源插座，特别是涉及一种具有保护功能的电源插座。
背景技术
传统的电源插座，无论是墙面电源插板或多功能插座还是各种转插，无论是带接地线、或不带接地线的单相电源插座、还是三相插座，结构上均包括外壳、插孔、插孔内的金属触片及伸入外壳内的电源接入部件（电源线或者插脚），插座本身没有温度保护和电流保护功能，当周围环境温度升高而过热时，或者电流过大时，这样的插座都无法自动断开电源，起不到保护作用。各种家用电器及工厂设备使用过程中的磨损或损坏，导致插头松动、负载过大、电线磨损，家用电器的损坏及工厂设备一系列故障易引起电路发热或电流过大，从而烧坏电器设备甚至可能引起电器火灾。
发明内容
本实用新型要解决的技术问题是提供一种过温过电流保护电源插座。
为解决上述问题，本实用新型提供一种插座，包括壳体、电源接入部件和插孔，其特征在于，所述壳体内还设有一个温度电流保护器，所述温度电流保护器串联在插座的火线插孔内的金属触片与电源接入部件的火线部分之间。
所述温度电流保护器包括一个双金属片及并联在其两端的一个热敏电阻。
所述温度电流保护器设有一个作为电连接端的金属外壳，所述火线插孔的金属触片与所述金属外壳通过导线电连接或直接紧贴电连接或直接焊接在一起。
所述插座为墙面电源插板或多功能电源插座；所述电源接入部件为外接电源的电源线。
所述插座为转插插座；所述电源接入部件为外接电源的插脚。
所述插座为带接地线的单相电源插座或为不带地线的单相电源插座或为三相电源插座。
所述温度电流保护器设有一个金属底板和一个具有凹槽的所述金属外壳，所述底板与所述外壳的凹槽口相对并与外壳扣合成一个腔体，所述底板与所述外壳之间以绝缘纸绝缘，所述腔体内置有所述双金属片，所述双金属片的一端与所述金属外壳电连接，另一端设有动触点，所述底板上固定设有一个向所述腔体内突出的静触点，所述静触点穿过底板一侧的绝缘纸而与所述动触点对应，所述动触点常态时与静触点电连接、而当双金属片温度高于设定值时则离开静触点而断开电连接；所述热敏电阻的一侧紧贴并电连接于所述底板远离外壳的一侧，所述热敏电阻的另一侧则与一个金属弹片电连接，该金属弹片还与所述外壳电连接，并将热敏电阻与外壳压紧；所述底板上设有一个电连接端；该电连接端与电源接入部件的火线部分电连接；而所述火线插孔的火线金属触片则电连接在所述金属外壳上靠近双金属片的一侧。
所述的电连接端是一段导线，一端焊接在所述底板上、或通过底板上的接线卡与底板电连接，另一端电连接在电源接入部件的火线部分。
所述热敏电阻为长方体形，而所述金属弹片中部折弯成与热敏电阻外形相适配的形状、部分包围所述热敏电阻，金属弹片两端则向外壳方向折弯并紧扣在所述外壳两侧;所述隔在底板与外壳之间的绝缘纸向底板远离外壳的一侧折弯，两端翘起、夹持住所述热敏电阻的两侧。
所述温度电流保护器的底板采用铁镍锌合金的冷轧板；所述外壳采用铁镍锌合金材质的深冲拉伸冷轧板；所述金属弹片采用不锈钢材质。
由于本实用新型在插座火线插孔的金属触片与电源接入部件的火线部分之间串联了一个温度电流保护器，当出现环境温度高过设定值，或电路电流高过设定值，则温度电流保护器可断开火线插孔的金属触片与电源接入部件的火线部分之间的电连接，从而起到保护作用。
本实用新型采用了热敏电阻与双金属片并联的保护器串联在插座火线，热敏电阻具有一定导电能力，热敏电阻阻值很大，当双金属片过热断开，这时电流自热敏电阻通过，其阻值迅速变大，使回路中电流很小，不足以带动负载，且热敏电阻通电后发热，热传递给双金属片，导致双金属片无法降温复位，必须切断电源，使得热敏电阻断电而停止发热，等待几分钟，双金属片降温后重新接通插座电源，这时双金属片才能复位，这就避免了双金属片的温度自然降低而使得插座自动复位，即实现了断电才能复位的功能，这样不仅使电路起到过热保护，并且还提高了使用安全性。由于热敏电阻PTC通电后自身发热、阻值成倍增大，从而实现保护，所以使用了热敏电阻后电路的电流保护更加敏感。
本实用新型进一步技术方案中温度电流保护器采用导电的金属外壳、金属底板和金属弹片作为导体，并利用绝缘纸为底板和外壳绝缘，采用紧凑、巧妙易行的结构将热敏电阻并联在双金属片开关的两端，形成一个便于接入插座壳体的小巧的保护器，可以不增大现有最常用的普通插座的体积，其中，热敏电阻紧挨双金属片，使得热敏电阻通电产生的热量能够迅速传递给双金属片，保护效果更快更好。
当直接将火线插孔的金属触片与电流温度保护器的金属外壳直接紧贴电连接、甚至焊接在一起，中间没有介质，保证了热传导的直接性、高效性，使过温过电流保护响应更快、更灵敏。且结构小巧，可以适用于各种形状和结构的电源插座。
附图说明
下面结合附图和具体实施方式对本实用新型作进一步详细说明：
图1是本实用新型的温度电流保护器电路图。
图2是本实用新型插座内的温度电流保护器主视图。
图3是本实用新型插座内的温度电流保护器侧视图。
图4是图2的A-A剖视图。
图5是实施例1的墙面电源插板主视图。
图6是图5的B-B剖视示意图。
图7是实施例2的多功能电源插座主视图。
图8是图7的C-C剖视示意图。
图9是实施例3的不带接地线的单相电源转插插座主视图。
图10是图9的D-D剖视示意图。
图11是实施例4的带接地线的单相电源转插插座主视图。
图12是图11的E-E剖视示意图。
图13是实施例5的三相电源转插插座主视图。
图14是图13的F-F剖视示意图。
具体实施方式
　　实施例1
如图5和图6所示，是本实施例的墙面电源插板200，该插板上有两孔插位，还有三孔插位。该插板包括一个塑料的壳体1、作为电源接入部件的电源线的火线2和零线3（也可以是带有地线的插板，图中未示出地线），和火线插孔7、零线插孔8、地线插孔9，每个插孔内设有与插头端子配合实现电连接的金属触片，为火线金属触片7-1、零线金属触片8-1。壳体内还设有一个温度电流保护器100，该温度电流保护器100的金属外壳20作为电连接部件与所述火线金属触片7-1紧贴或焊接在一起，而该温度电流保护器100的底板10上焊接有一段导线作为电连接端11，或者通过底板接线卡14卡接一段导线作为电连接端11（参阅图2-4所示），该导线电连接在电源线的火线2上，从而实现将温度电流保护器串联在插座的火线插孔7内的火线金属触片7-1与电源接入部件的火线部分之间。其中图6的示意图中未剖开温度电流保护器100。
温度电流保护器100是一个可以对电路中电流过高、电路或环境温度过热时起到保护作用的保护装置，如图2-4所示，它设有一个长方形平板状导电金属底板10和一个导电金属外壳20，底板是由铁镍锌合金的冷轧板制成，导电、导热效果好，且不生锈，而外壳20是由深冲拉伸冷轧板铁镍锌合金材质制成的，该金属外壳20具有槽口面向底板的凹槽22，所述底板10与外壳20扣合成一个腔体，所述底板与所述外壳之间以绝缘纸30绝缘，双金属片40设置于所述腔体内，其一端与所述外壳20电连接，本实施例中的电连接是这样实现的：所述外壳20外表面近中部向内表面凹陷形成一个向腔体内突出的触点23，所述双金属片40相应的一端焊接有一个导电的固定铁钉41，该固定铁钉与所述触点23焊接在一起。所述双金属片40的另一端是动触点42，而所述底板10上固定电连接一个向所述空腔突出的导电静触点12，所述静触点12穿过底板一侧的绝缘纸30而与所述动触点42对应，所述动触点42常态时与静触点12电连接、而当双金属片温度高于设定值时则离开静触点而断开电连接；为了便于双金属片复位，在所述外壳的外表面向内表面还凹陷形成向腔体内突出的一个突起25，当双金属片动静触点分开后，双金属片动触点的那端顶在所述突起25上，不会紧贴在外壳的内表面，接触面小，有助于复位。一个长方体形的PTC热敏电阻50的一侧面电连接的紧贴在底板10上，位于底板远离外壳20的一侧，而该PTC热敏电阻50的另一侧设有一个不锈钢材料的导电金属弹片60，该金属弹片60中部折弯成与热敏电阻50外形相适配的矩形槽61、部分包围且紧贴所述热敏电阻，形成与热敏电阻的电连接，而金属弹片60的两端62向外壳方向折弯紧紧扣在所述外壳两侧，如此实现与所述外壳的电连接，并将热敏电阻、底板、绝缘纸、外壳紧紧压在一起，形成紧凑的结构；隔在底板与外壳之间的绝缘纸30呈长方形，以聚脂复合材料制成，具有一定的硬度，该绝缘纸向底板10外表面折弯将底板部分包围住，底板中间不被包围而用于放置热敏电阻，绝缘纸两端31翘起，将所述热敏电阻50夹持在翘起的两端之间，具有一定的固定作用，如图3所示。如图3-5所示，自所述金属外壳20一体地延伸出一端，其上设有外壳接线卡24，所述底板10也延伸出一端，其上也设有接线卡14，用来卡接导线。温度电流保护器的上述结构形成了如图1所示的电路连接，即热敏电阻50与双金属片40并联。
当由于故障等原因，电路过热或过流，双金属片动、静触点跳开后，电流自热敏电阻通过，热敏电阻立即发热，热敏电阻将热量传递给双金属片，使其无法降温复位，由于热敏电阻阻值大，回路中电流很小，不足以带动负载，电器设备不会运行，只有当断开插座电源，使得热敏电阻断电而停止发热，等待一定时间后双金属片降温到复位，重新接通插座电源，插座又重新开始工作了。当电路过流，热敏电阻会发热升温，一方面如果使双金属片温度超过限值而跳开，可以实现保护，另一方面，热敏电阻升温阻值增大很多而降低电路电流，也可实现过流保护。
实施例2
如图7-8所示是本实用新型的多功能电源插座300，同实施例1一样，在三个三孔插位的火线插孔7内的火线金属触片7-1与电源线的火线2之间串联了一个同实施例1一样的温度电流保护器。
实施例3
如图9-10所示是本实用新型的不带地线的单相电源插座400，这是一个转插。它包括塑料的壳体1，还有作为电源接入部件的火线插脚4和零线插脚5，还有火线插孔7、零线插孔8、地线插孔9，每个插孔内设有和插头端子配合实现电连接的金属触片。在火线插孔7内的火线金属触片7-1与火线插脚4之间串联了一个同实施例1一样的温度电流保护器。
实施例4
如图11-12所示是本实用新型的带地线的单相电源插座500，这也是一个转插。它包括塑料的壳体1，还有作为电源接入部件的火线插脚4和零线插脚5、地线插脚6，还有火线插孔7、零线插孔8、地线插孔9，每个插孔内设有和插头端子配合实现电连接的金属触片。同实施例4一样，在火线插孔7内的火线金属触片7-1与火线插脚4之间串联了一个同实施例1一样的温度电流保护器。
实施例5
如图13-14所示是本实用新型的三相电源插座600，这也是一个转插。它包括塑料的壳体1，还有作为电源接入部件的两个火线插脚4和一个零线插脚5，还有两个火线插孔7、一个零线插孔8，每个插孔内设有和插头端子配合实现电连接的金属触片。同以上实施例类似，在任意一个火线插孔7内的火线金属触片7-1与对应的火线插脚4之间串联了一个同实施例1一样的温度电流保护器。

Claims (10)

  1. 一种插座，包括壳体（1）、电源接入部件（2、3、4、5、6）和插孔（7、8、9），其特征在于，所述壳体内还设有一个温度电流保护器（100），所述温度电流保护器（100）串联在插座的火线插孔（7）内的火线金属触片（7-1）与电源接入部件的火线部分之间。
  2. 根据权利要求1所述的插座，其特征在于，所述温度电流保护器（100）包括一个双金属片（40）及并联在其两端的一个热敏电阻（50）。
  3. 根据权利要求2所述的插座，其特征在于，所述温度电流保护器（100）设有一个作为电连接端的金属外壳（20），所述火线插孔（7）的火线金属触片（7-1）与所述金属外壳通过导线电连接或直接紧贴电连接或直接焊接在一起。
  4. 根据权利要求1所述的插座，其特征在于，所述插座为墙面电源插板（200）或多功能电源插座（300）；所述电源接入部件为外接电源的电源线（2、3）。
  5. 根据权利要求1所述的插座，其特征在于，所述插座为转插插座；所述电源接入部件为外接电源的插脚（4、5、6）。
  6. 根据权利要求1所述的插座，其特征在于，所述插座为带接地线的单相电源插座（500）或为不带地线的单相电源插座（400）或为三相电源插座（600）。
  7. 根据权利要求1-6任一项所述的插座，其特征在于，所述温度电流保护器（100）设有一个金属底板（10）和一个具有凹槽（22）的所述金属外壳（20），所述底板与所述外壳的凹槽口相对并与外壳扣合成一个腔体，所述底板与所述外壳之间以绝缘纸（30）绝缘，所述腔体内置有所述双金属片（40），所述双金属片的一端与所述金属外壳（20）电连接，另一端设有动触点（42），所述底板（10）上固定设有一个向所述腔体内突出的静触点（12），所述静触点（12）穿过底板一侧的绝缘纸（30）而与所述动触点（42）对应，所述动触点常态时与静触点电连接、而当双金属片（30）温度高于设定值时则离开静触点而断开电连接；所述热敏电阻（50）的一侧紧贴并电连接于所述底板（10）远离外壳的一侧，所述热敏电阻的另一侧则与一个金属弹片（60）电连接，该金属弹片（60）还与所述外壳（20）电连接，并将热敏电阻与外壳压紧；所述底板（10）上设有一个电连接端（11）；该电连接端（11）与电源接入部件（2、4、4、5、6）的火线部分电连接；而所述火线插孔（7）的火线金属触片（7-1）则电连接在所述金属外壳（20）上靠近双金属片（40）的一侧。
  8. 根据权利要求7所述的插座，其特征在于，所述的电连接端（11）是一段导线，一端焊接在所述底板（10）上、或通过底板上的接线卡（14）与底板电连接，另一端电连接在电源接入部件的火线部分（2、4）。
  9. 根据权利要求7所述的插座，其特征在于，所述热敏电阻（50）为长方体形，而所述金属弹片（60）中部折弯成与热敏电阻外形相适配的形状、部分包围所述热敏电阻，金属弹片两端（62）则向外壳方向折弯并紧扣在所述外壳两侧;所述隔在底板与外壳之间的绝缘纸向底板远离外壳的一侧折弯，两端（31）翘起、夹持住所述热敏电阻（50）的两侧。
  10. 根据权利要求7所述的插座，其特征在于，所述温度电流保护器的底板（10）采用铁镍锌合金的冷轧板；所述外壳（20）采用铁镍锌合金材质的深冲拉伸冷轧板；所述金属弹片（60）采用不锈钢材质。
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