WO2023020584A1 - 一种温度保险丝 - Google Patents

一种温度保险丝 Download PDF

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Publication number
WO2023020584A1
WO2023020584A1 PCT/CN2022/113371 CN2022113371W WO2023020584A1 WO 2023020584 A1 WO2023020584 A1 WO 2023020584A1 CN 2022113371 W CN2022113371 W CN 2022113371W WO 2023020584 A1 WO2023020584 A1 WO 2023020584A1
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WO
WIPO (PCT)
Prior art keywords
spring
push rod
thermal fuse
temperature
sensing body
Prior art date
Application number
PCT/CN2022/113371
Other languages
English (en)
French (fr)
Inventor
洪尧祥
陈晓健
Original Assignee
厦门赛尔特电子有限公司
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 厦门赛尔特电子有限公司 filed Critical 厦门赛尔特电子有限公司
Priority to KR1020237011201A priority Critical patent/KR20230098149A/ko
Priority to JP2023518463A priority patent/JP7522308B2/ja
Priority to EP22857105.5A priority patent/EP4187568B1/en
Publication of WO2023020584A1 publication Critical patent/WO2023020584A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • 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
    • H01H37/764—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material in which contacts are held closed by a thermal pellet
    • 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
    • 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
    • H01H37/764—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material in which contacts are held closed by a thermal pellet
    • H01H37/766—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material in which contacts are held closed by a thermal pellet using a bridging contact
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H9/04—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings

Definitions

  • the present application relates to the field of protectors, in particular to a thermal fuse.
  • the thermal fuse is an over-temperature protection component.
  • the temperature fuse is composed of temperature sensing body, electrode, ceramic shell, push rod, spring and so on.
  • this type of product uses a fusible temperature sensor placed at the bottom, and a push rod is placed on the top to push the reed.
  • the fusible temperature sensor melts during the action, the push rod loses support, and the reed is out of contact with the electrode to disconnect the circuit.
  • the disadvantage of this structure is that as the fusible temperature-sensitive body ages and shrinks, it will cause changes in the contact pressure between the reed and the electrode, resulting in poor contact.
  • the technical problem to be solved in this application is: to provide a thermal fuse, which can effectively solve the problem of poor contact caused by the pressure change of the electrode contact caused by the aging of the temperature sensing body.
  • a thermal fuse including reeds and contacts arranged oppositely, and also includes a spring mechanism, a temperature sensing body and a push rod;
  • the spring mechanism includes a spring and a spring post, the spring is sleeved on one end of the spring post and the temperature
  • the fuse is not triggered, the spring is in a compressed state, the temperature sensing body is in contact with the other end of the spring post, one end of the push rod is in contact with the reed, and the other end of the push rod is in contact with the side wall of the spring post.
  • the end of the temperature sensing body is in contact with the spring column, and the length of the temperature sensing body in the direction of spring expansion and contraction is greater than or equal to the length of the push rod in contact with the spring column in the direction of spring expansion and contraction.
  • the spring column includes a seat body, two posts respectively arranged at both ends of the seat body and on the same side, and a connection part provided on the seat body, and the connection part and the posts are on different sides of the seat body , the spring is sheathed on the cylinder, the temperature sensing body is in contact with the connecting part, and the other end of the push rod is in contact with the part of the seat between the two cylinders.
  • the thermal fuse further includes a casing, and one end of the casing is provided with two electrode sheets arranged at intervals, and the two electrode sheets are respectively electrically connected to the reeds and the contacts in one-to-one correspondence.
  • a guide plate is provided inside the housing, and the guide plate is set corresponding to the position of the push rod.
  • a copper cap is provided inside the housing, and the temperature sensing body is arranged in the copper cap.
  • connection part is in the shape of a cylinder
  • the inner space of the copper cap is in the shape of a cylinder
  • the temperature-sensitive body is in the shape of a cylinder
  • the outer diameter of the connection part is equal to the outer diameter of the temperature-sensing body
  • the inner diameter of the copper cap is larger than the outer diameter of the connection part.
  • the housing also includes a mounting plate, the other end of the housing has an opening, the mounting plate is fixed to the opening of the housing by rivets to close the opening, and the copper cap abuts against the opening of the mounting plate on the inner wall.
  • a cavity is provided in the housing, and an insulating mica sheet and a resistance wire are arranged in the cavity, and the resistance wire is electrically connected to the welding column arranged on the electrode sheet, and the insulating mica sheet is arranged with the resistance wire between the mounting plate.
  • the material of the housing is ceramic or plastic.
  • the push rod is made of ceramic or plastic.
  • the thermal fuse provided by this application changes the traditional method of directly contacting the push rod and the temperature sensing body to realize the transmission, and instead adds a spring mechanism between the two to realize the indirect contact between the push rod and the temperature sensing body.
  • the spring mechanism includes a spring and a spring column, the spring is sleeved on one end of the spring column and the spring is in a compressed state when the thermal fuse is not triggered, and the temperature sensing body is in contact with the At the other end of the spring column, one end of the push rod is in contact with the reed, the other end of the push rod is in contact with the end of the side wall of the spring column, and the length of the temperature sensing body in the direction of spring expansion and contraction is greater than or equal to that of the push rod.
  • the length of the rod in contact with the spring column in the direction of spring expansion and contraction.
  • the compression force of the spring is released, so that the other end of the push rod is separated from the spring column, and then the reed is separated from the spring column under the action of its own elastic force.
  • the contacts separate to break the circuit.
  • FIG. 1 is a schematic structural diagram of a thermal fuse disclosed in an embodiment of the present application
  • Fig. 2 is a setting method of a push rod in a thermal fuse disclosed in the embodiment of the present application;
  • Fig. 3 is another setting method of the push rod in the thermal fuse disclosed in the embodiment of the present application.
  • FIG. 4 is an exploded view of a thermal fuse disclosed in Embodiment 1 of the present application.
  • Fig. 5 is another structural exploded view of a thermal fuse disclosed in Embodiment 1 of the present application.
  • FIG. 6 is an exploded view of the structure of a thermal fuse according to Embodiment 2 of the present application.
  • Fig. 7 is an assembly cross-sectional view of a thermal fuse according to Embodiment 2 of the present application.
  • FIG. 8 is a schematic diagram of a partial structure of a thermal fuse according to Embodiment 2 of the present application.
  • Fig. 9 is a partial front view of a thermal fuse according to Embodiment 2 of the present application.
  • FIG. 10 is an exploded view of the structure of a thermal fuse according to Embodiment 3 of the present application.
  • Fig. 11 is an assembly sectional view of a thermal fuse according to Embodiment 3 of the present application.
  • FIG. 1 is a structural schematic diagram of a thermal fuse provided by the present application, including an electrode piece, a push rod spring, a push rod and a spring mechanism, and the spring of the push rod spring is sleeved on the push rod.
  • Fig. 2 and Fig. 3 are respectively the design method of a push rod in a thermal fuse provided by the present application, wherein Fig. 2 shows that the guide post has a raised fixed bridge to form a push rod, and Fig. 3 shows that the bracket is welded on the guide post, and the floating spring is placed inside the bracket to fix the electric bridge to form a push rod
  • Embodiment 1 of the present application is, in this embodiment, Fig. 4 and Fig. 5 are respectively the exploded views of the structure of Embodiment 1 of the present application.
  • the temperature fuse of the utility model has two electrode sheets, which are respectively riveted on the ceramic shell. The reed and the contacts are respectively spot-welded on the two electrode sheets.
  • the guide post 17 and the bracket 16 are welded together. Inside the bracket 16: the floating spring 18 is connected to the electric The bridge 19 exerts pressure, which means that the electric bridge 19 has a floating pressure when it contacts the contact 2.
  • the above-mentioned guide post 17, bracket 16, floating spring 18 and electric bridge 19 form an integral push rod, and the push rod front end is placed with a push rod spring 20.
  • the push rod spring 20 When the thermal fuse is not triggered, the push rod spring 20 is in a compressed state, and the resistance wire (function: when the product is used in a circuit with a large rated current, the resistance wire acts as an arc extinguisher to prevent arcing when the reed leaves the contact)
  • the spring By welding on the welding column of the electrode sheet, the spring is placed in the cavity of the ceramic shell, the temperature sensing body is placed in the copper cap, and the upper end supports the spring column, wherein the lower part of the spring column and the copper cap form a large gap fit The large gap is conducive to the melting and discharge of the temperature sensing body.
  • the upper end of the spring column supports two springs.
  • the mounting plate is riveted with the ceramic shell to transmit temperature and fix it.
  • the cover plate passes through the gap between the rivet and the ceramic shell to prevent Dust, sealing effect.
  • a thermal fuse provided by the present application includes reeds and contacts arranged oppositely, and also includes a spring mechanism, a temperature sensing body and a push rod;
  • the spring mechanism includes a spring and a spring post, and the The spring is sleeved on one end of the spring column and the spring is in a compressed state when the thermal fuse is not triggered, the temperature sensing body is in contact with the other end of the spring column, and one end of the push rod is in contact with the reed, so The other end of the push rod abuts against the end of one side wall of the spring post, and the length of the temperature sensing body in the direction of spring expansion and contraction is greater than or equal to the length of the push rod abutting against the spring post in the direction of spring expansion and contraction.
  • the thermal fuse provided by this application changes the traditional method of directly contacting the push rod and the temperature sensing body to realize the transmission, and instead adds a spring mechanism between the two to realize the indirect contact between the push rod and the temperature sensing body.
  • the spring mechanism includes a spring and a spring column, the spring is sleeved on one end of the spring column and the spring is in a compressed state when the thermal fuse is not triggered, and the temperature sensing body is in contact with the At the other end of the spring column, one end of the push rod is in contact with the reed, the other end of the push rod is in contact with the end of the side wall of the spring column, and the length of the temperature sensing body in the direction of spring expansion and contraction is greater than or equal to that of the push rod.
  • the spring column includes a seat body, two posts respectively arranged at both ends of the seat body and on the same side, and a connection part provided on the seat body, and the connection part and the posts are on different sides of the seat body , the spring is sheathed on the cylinder, the temperature sensing body is in contact with the connecting part, and the other end of the push rod is in contact with the part of the seat between the two cylinders.
  • the thermal fuse further includes a casing, and one end of the casing is provided with two electrode sheets arranged at intervals, and the two electrode sheets are respectively electrically connected to the reeds and the contacts in one-to-one correspondence.
  • a guide plate is provided inside the housing, and the guide plate is set corresponding to the position of the push rod.
  • the guide plate is fixed in the casing by riveting, and is arranged corresponding to the position of the push rod, so as to prevent the push rod from falling off.
  • a copper cap is provided inside the housing, and the temperature sensing body is arranged in the copper cap.
  • connection part is in the shape of a cylinder
  • the inner space of the copper cap is in the shape of a cylinder
  • the temperature-sensitive body is in the shape of a cylinder
  • the outer diameter of the connection part is equal to the outer diameter of the temperature-sensing body
  • the inner diameter of the copper cap is larger than the outer diameter of the connection part.
  • the housing also includes a mounting plate, the other end of the housing has an opening, the mounting plate is fixed to the opening of the housing by rivets to close the opening, and the copper cap leans against the opening. on the inside wall of the mounting plate described above.
  • the mounting plate is riveted to the housing through rivets, which plays a role of sealing and also plays a role of limiting the copper cap.
  • the traditional thermal cutoff is sealed with materials such as resin, and the sealing material will melt if the temperature is too high, so it cannot be used in a high temperature environment.
  • the sealing method with the above structure has the characteristics of high temperature resistance, and can realize a thermal fuse with a high melting point.
  • a cavity is provided in the housing, and an insulating mica sheet and a resistance wire are arranged in the cavity, and the resistance wire is electrically connected to the welding column arranged on the electrode sheet, and the insulating mica sheet is arranged with the resistance wire between the mounting plate.
  • the resistance wire acts as an arc extinguishing function to prevent arcing when the reed leaves the contact.
  • the material of the housing is ceramic or plastic.
  • the push rod is made of ceramic or plastic.
  • the temperature resistance can reach above 500°C.
  • a thermal fuse provided by this application includes a reed 1, a contact 2, a spring mechanism, a temperature sensing body 3, a push rod 4, a housing 5, a guide plate 6, an electrode sheet 7, a mica sheet 8, a copper cap 9, an installation Plate 10 and rivet 11; in this embodiment, the material of the housing is ceramic or plastic.
  • the material of the push rod is ceramic or plastic.
  • Both opposite ends of the housing 5 are openings, specifically an upper end opening and a lower end opening;
  • the above-mentioned reed 1, contact 2, spring mechanism, temperature sensing body 3, push rod 4, guide plate 6 and copper cap 9 are respectively arranged inside the housing 5, and two electrode pieces 7 are arranged at intervals on both sides of the upper opening ,
  • the mica sheet 8 is also arranged at the upper opening and is located between the two electrode sheets, and the two electrode sheets are used as two electrical terminals of the product.
  • the mica sheet can be inserted into the gap between the electrode sheet and the housing from the side to play the role of dustproof and sealing.
  • the reed 1 and the contact 2 are arranged opposite to each other, and the two electrode sheets are respectively electrically connected to the reed and the contact in one-to-one correspondence;
  • the spring mechanism includes a spring 12 and a spring column 13.
  • the spring column 13 includes a seat body 131, two columns 132 respectively arranged at both ends of the seat body 131 and on the same side, and a connecting portion 133 arranged on the seat body 131.
  • the connecting portion 133 and the cylinder 132 are on different sides of the seat body, the spring 12 is sleeved on the cylinder 132; the spring 12 is sleeved on one end of the spring cylinder 13 and the thermal fuse is not triggered.
  • the spring is in a compressed state, the temperature sensing body 3 is in contact with the other end of the spring post 13, one end of the push rod 4 is in contact with the reed 1, and the other end of the push rod 4 is in contact with the side wall of the spring post 13.
  • the ends abut against each other, and the length of the temperature sensing body 3 in the direction of spring expansion and contraction matches the length of the push rod 4 in the direction of spring expansion and contraction.
  • the temperature-sensing body 3 is in contact with the connecting portion 133 , and the other end of the push rod 4 is in contact with the part of the seat between the two cylinders.
  • a guide plate 6 is arranged inside the housing 5, and the guide plate is set corresponding to the position of the push rod.
  • the guide plate is fixed in the housing by riveting, and is set corresponding to the position of the push rod to prevent the push rod from falling off.
  • the housing 5 is provided with a copper cap 9, the temperature sensing body 3 is disposed in the copper cap 9, the connecting portion 133 is cylindrical, and the inner space of the copper cap 9 is cylindrical.
  • the temperature-sensing body 3 is in the shape of a cylinder, the outer diameter of the connection part is equal to the outer diameter of the temperature-sensing body, and the inner diameter of the copper cap is larger than the outer diameter of the connection part.
  • a large gap is formed between the connection part of the spring column and the copper cap, and the large gap is conducive to the melting and discharge of the temperature sensing body.
  • the mounting plate 10 is fixed to the lower opening of the casing by a rivet 11 to close the lower opening, and the copper cap 9 abuts against the inner wall of the mounting plate 10 .
  • the housing is a ceramic housing
  • the temperature-sensing body is made of a material whose trigger mechanism is higher than 300°C.
  • the thermal fuse can be applied to a temperature above 300°C.
  • a resistance wire is added in the casing, specifically: a cavity is provided in the casing, an insulating mica sheet 15 and a resistance wire 14 are arranged in the cavity, and the resistance wire 14 and the resistance wire 14 are connected to each other.
  • the welding post arranged on the electrode sheet 7 is electrically connected, and the insulating mica sheet 15 is arranged between the resistance wire 14 and the mounting board 10 .
  • the thermal fuse changes the traditional method of directly contacting the push rod and the temperature sensing body to realize the transmission, and instead adds a spring mechanism between the two to realize the transmission between the push rod and the temperature sensing body.
  • the indirect transmission of the temperature-sensing body is specifically: the spring mechanism includes a spring and a spring column, the spring is sleeved on one end of the spring column and the spring is in a compressed state when the thermal fuse is not triggered, and the temperature-sensing body abut against the other end of the spring post, one end of the push rod abuts against the reed, the other end of the push rod abuts against the end of the side wall of the spring post, and the temperature-sensitive body in the direction of expansion and contraction of the spring
  • the length is greater than or equal to the length of the push rod in contact with the spring column in the direction of spring expansion and contraction.
  • the above-mentioned structure overcomes the problem of poor electrode contact caused by the aging of the temperature-sensing body. And has the advantage of high temperature resistance.

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  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Fuses (AREA)

Abstract

本申请涉及保护器领域，尤其涉及一种温度保险丝。改变了传统的将推杆与感温体直接接触来实现传动的方式，改为通过在两者之间增设一弹簧机构，实现推杆与感温体的间接传动，具体为：弹簧机构包括弹簧和弹簧柱，弹簧套设于弹簧柱一端且温度保险丝未被触发时弹簧处于压缩状态，感温体抵接于弹簧柱另一端，推杆一端与簧片抵接，推杆另一端与弹簧柱一侧壁的端部抵接，感温体在弹簧伸缩方向上的长度大于或等于推杆在弹簧伸缩方向上与弹簧柱抵接的长度，当感温体被触发时，弹簧的压缩弹力被释放，以使推杆另一端与弹簧柱分离，进而簧片在自身弹力的作用下与触点分离，以此来切断电路。通过上述结构来克服感温体老化所造成的电极接触不良的问题。

Description

一种温度保险丝
相关申请的交叉引用
本申请要求在2021年08月18日提交中国专利局、申请号为202122003888.2、名称为“一种温度保险丝”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。
技术领域
本申请涉及保护器领域，尤其涉及一种温度保险丝。
背景技术
温度保险丝是一种过温保护元器件，当被保护的电子设备发生异常故障发热，温度到达温度保险丝的熔断温度时，保险丝会发生熔断，从而切断电路。温度保险丝由感温体、电极、陶瓷外壳、推杆、弹簧等构成。通常，该类型的产品是采用最底部放置易熔感温体，上面放置推杆推动簧片，动作时易熔感温体融化，推杆失去支撑，簧片与电极脱离接触而断开电路的结构，这种结构缺点是随着易熔感温体老化、收缩，会造成簧片与电极触点压力变化、导致接触不良的问题。
概述
本申请所要解决的技术问题是：提供一种温度保险丝，能够有效解决感温体老化所造成的电极触点压力变化、导致接触不良的问题。
为了解决上述技术问题，本申请采用的技术方案为：
一种温度保险丝，包括相对设置的簧片和触点，还包括弹簧机构、感温体和推杆；所述弹簧机构包括弹簧和弹簧柱，所述弹簧套设于弹簧柱一端且所述温度保险丝未被触发时所述弹簧处于压缩状态，所述感温体抵接于所述弹簧柱另一端，所述推杆一端与簧片抵接，所述推杆另一端与弹簧柱一侧壁的端部抵接，所述感温体在弹簧伸缩方向上的长度大于或等于推杆在弹簧伸缩方向上与弹簧柱抵接的长度。
进一步地，所述弹簧柱包括一座体、两个分别设置在所述座体两端且同侧的柱体以及设置在座体上的连接部，所述连接部与柱体处于座体的不同侧，所述弹簧套设于柱体上，所述感温体与连接部抵接，所述推杆另一端与所述座体位于两个柱体之间的部分抵接。
进一步地，所述温度保险丝还包括一壳体，所述壳体一端部设有两个间隔设置的电极片，两个所述电极片分别与簧片和触点一一对应电连接。
进一步地，所述壳体内部设有导板，所述导板对应推杆位置设置。
进一步地，所述壳体内部设有铜帽，所述感温体设置于所述铜帽内。
进一步地，所述连接部呈圆柱体状，所述铜帽的内部空间为圆柱体状，所述感温体呈圆柱体状，所述连接部的外径与感温体的外径相等，所述铜帽的内径大于所述连接部的外径。
进一步地，还包括安装板，所述壳体另一端部具有开口，所述安装板通过铆钉固定于所述壳体的开口处以封闭所述开口，所述铜帽抵靠于所述安装板的内侧壁上。
进一步地，所述壳体内设有一型腔，所述型腔内设有绝缘云母片和电阻丝，所述电阻丝与设置在电极片的焊接柱电连接，所述绝缘云母片设置与电阻丝与安装板之间。
进一步地，所述壳体的材质为陶瓷或塑料。
进一步地，所述推杆的材质为陶瓷或塑料。
本申请的有益效果在于：
本申请提供的一种温度保险丝，改变了传统的将推杆与感温体直接接触来实现传动的方式，改为通过在两者之间增设一弹簧机构，实现推杆与感温体的间接传动，具体为：所述弹簧机构包括弹簧和弹簧柱，所述弹簧套设于弹簧柱一端且所述温度保险丝未被触发时所述弹簧处于压缩状态，所述感温体抵接于所述弹簧柱另一端，所述推杆一端与簧片抵接，所述推杆另一端与弹簧柱一侧壁的端部抵接，所述感温体在弹簧伸缩方向上的长度大于或等于推杆在弹簧伸缩方向上与弹簧柱抵接的长度，当感温体被触发时，弹簧的压缩弹力被释放，以使推杆另一端与弹簧柱分离，进而簧片在自身弹力的作用下与触点分 离，以此来切断电路。通过上述结构来克服感温体老化所造成的电极接触不良的问题。
附图简述
图1为本申请实施例公开的一种温度保险丝的结构示意图；
图2为本申请实施例公开的一种温度保险丝中推杆的设置方式；
图3为本申请实施例公开的另一种温度保险丝中推杆的设置方式；
图4为本申请实施例一公开的一种温度保险丝的结构分解图；
图5为本申请实施例一公开的一种温度保险丝的又一结构分解图；
图6为本申请实施例二的一种温度保险丝的结构分解图；
图7为本申请实施例二的一种温度保险丝的组装剖视图；
图8为本申请实施例二的一种温度保险丝的局部结构示意图；
图9为本申请实施例二的一种温度保险丝的局部正视图；
图10为本申请实施例三的一种温度保险丝的结构分解图；以及
图11为本申请实施例三的一种温度保险丝的组装剖视图；
标号说明：
1、簧片；2、触点；3、感温体；4、推杆；5、壳体；6、导板；7、电极片；
8、云母片；9、铜帽；10、安装板；11、铆钉；
12、弹簧；13、弹簧柱；131、座体；132、柱体；133、连接部；
14、电阻丝；15、绝缘云母片。
详细描述
为详细说明本申请的技术内容、所实现目的及效果，以下结合实施方式并配合附图予以说明。
请参照图1，图1为本申请提供的一种温度保险丝的结构示意图，包括电极片、推杆弹簧、推杆以及弹簧机构，所述推杆弹簧的弹簧套设于所述推杆上。
请参照图2和图3，图2和图3分别为本申请提供的一种温度保险丝中推杆的设计方式，其中，图2所示为导柱有凸起固定电桥形成推杆，图3所示 为通过将支架焊接在导柱上，支架内部放置浮动弹簧固定电桥形成推杆
请参照图4-5，本申请的实施例一为，在本实施例中，图4和图5分别为本申请实施例一的结构分解图。本实用新型温度保险丝有两个电极片，分别铆接在陶瓷外壳上簧片和触点分别点焊在两个电极片上，导柱17与支架16焊接在一起，支架16内部：浮动弹簧18对电桥19施压，是电桥19与触点2接触时具有浮动压力，上述导柱17、支架16、浮动弹簧18以及电桥19形成一个整体的推杆，推杆前端放置推杆弹簧20，当温度保险丝未被触发时推杆弹簧20处于压缩状态，电阻丝(作用：当产品使用在额定电流较大的电路中，电阻丝起灭弧作用，防止簧片脱离触点时产生拉弧)通过焊接在电极片的焊接柱上，弹簧放置在陶瓷外壳的型腔中，感温体放置在铜帽内，上端支撑弹簧柱，其中，弹簧柱柱体下端部分和铜帽形成较大间隙配合，较大的间隙有利于感温体融化排出，弹簧柱上端支撑两个弹簧，安装板通过与陶瓷外壳铆接，起到传递温度和固定作用，盖板通过铆钉与陶瓷外壳的间隙，起到防尘、封口作用。
请参照图6-9，本申请提供的一种温度保险丝，包括相对设置的簧片和触点，还包括弹簧机构、感温体和推杆；所述弹簧机构包括弹簧和弹簧柱，所述弹簧套设于弹簧柱一端且所述温度保险丝未被触发时所述弹簧处于压缩状态，所述感温体抵接于所述弹簧柱另一端，所述推杆一端与簧片抵接，所述推杆另一端与弹簧柱一侧壁的端部抵接，所述感温体在弹簧伸缩方向上的长度大于或等于推杆在弹簧伸缩方向上与弹簧柱抵接的长度。
从上述描述可知，本申请的有益效果在于：
本申请提供的一种温度保险丝，改变了传统的将推杆与感温体直接接触来实现传动的方式，改为通过在两者之间增设一弹簧机构，实现推杆与感温体的间接传动，具体为：所述弹簧机构包括弹簧和弹簧柱，所述弹簧套设于弹簧柱一端且所述温度保险丝未被触发时所述弹簧处于压缩状态，所述感温体抵接于所述弹簧柱另一端，所述推杆一端与簧片抵接，所述推杆另一端与弹簧柱一侧壁的端部抵接，所述感温体在弹簧伸缩方向上的长度大于或等于推杆在弹簧伸缩方向上与弹簧柱抵接的长度，当感温体被触发时，弹簧的压缩弹力被释放，以使推杆另一端与弹簧柱分离，进而簧片在自身弹力的作用下与触点分离，以此来切断电路。通过上述结构来克服感温体老化所造成的电极接触不良 的问题。
进一步地，所述弹簧柱包括一座体、两个分别设置在所述座体两端且同侧的柱体以及设置在座体上的连接部，所述连接部与柱体处于座体的不同侧，所述弹簧套设于柱体上，所述感温体与连接部抵接，所述推杆另一端与所述座体位于两个柱体之间的部分抵接。
由上述描述可知，通过上述结构，实现感温体与推杆之间的间接传动。
进一步地，所述温度保险丝还包括一壳体，所述壳体一端部设有两个间隔设置的电极片，两个所述电极片分别与簧片和触点一一对应电连接。
进一步地，所述壳体内部设有导板，所述导板对应推杆位置设置。
由上述描述可知，通过上述结构，导板通过铆接方式固定在壳体内，且对应推杆位置设置，可防止推杆脱落。
进一步地，所述壳体内部设有铜帽，所述感温体设置于所述铜帽内。
由上述描述可知，通过上述结构，对感温体进行限位。
进一步地，所述连接部呈圆柱体状，所述铜帽的内部空间为圆柱体状，所述感温体呈圆柱体状，所述连接部的外径与感温体的外径相等，所述铜帽的内径大于所述连接部的外径。
由上述描述可知，通过上述结构，弹簧柱的连接部和铜帽之间形成较大间隙配合，较大的间隙有利于感温体融化排出。
进一步地，所述壳体还包括安装板，所述壳体另一端部具有开口，所述安装板通过铆钉固定于所述壳体的开口处以封闭所述开口，所述铜帽抵靠于所述安装板的内侧壁上。
由上述描述可知，通过上述结构，安装板通过铆钉与壳体铆接，起到封口作用，同时也起到对铜帽限位作用。并且，传统的温度保险丝采用树脂等材料封口，温度过高则封口材料会熔化，因此无法适用高温环境。而采用上述结构的封口方式，具有耐高温的特性，可以实现具有高熔点的温度保险丝。
进一步地，所述壳体内设有一型腔，所述型腔内设有绝缘云母片和电阻丝，所述电阻丝与设置在电极片的焊接柱电连接，所述绝缘云母片设置与电阻丝与安装板之间。
由上述描述可知，通过上述结构，当产品使用在额定电流较大的电路中，电阻丝起灭弧作用，防止簧片脱离触点时产生拉弧。
进一步地，所述壳体的材质为陶瓷或塑料。
进一步地，所述推杆的材质为陶瓷或塑料。
由上述描述可知，通过上述结构，耐温能力能够达到500℃以上。
请参照图6-9，本申请的实施例二为：
本申请提供的一种温度保险丝，包括簧片1、触点2、弹簧机构、感温体3、推杆4、壳体5、导板6、电极片7、云母片8、铜帽9、安装板10和铆钉11；在本实施例中，所述壳体的材质为陶瓷或塑料。所述推杆的材质为陶瓷或塑料。
所述壳体5的相对两端部均为开口，具体为上端开口和下端开口；
上述的簧片1、触点2、弹簧机构、感温体3、推杆4、导板6和铜帽9均分别设置在壳体5内部，两个电极片7间隔设置在上端开口的两侧，云母片8也设置在上端开口处且位于两个电极片之间，两个电极片作为该产品的两接电端子。在本实施例中，云母片可从侧面插入电极片与壳体的间隙中，起到防尘、封口作用。
上述簧片1和触点2相对设置，两个所述电极片分别与簧片和触点一一对应电连接；
所述弹簧机构包括弹簧12和弹簧柱13，弹簧柱13包括一座体131、两个分别设置在所述座体131两端且同侧的柱体132以及设置在座体131上的连接部133，所述连接部133与柱体132处于座体的不同侧，所述弹簧12套设于柱体132上；所述弹簧12套设于弹簧柱13一端且所述温度保险丝未被触发时所述弹簧处于压缩状态，所述感温体3抵接于所述弹簧柱13另一端，所述推杆4一端与簧片1抵接，所述推杆4另一端与弹簧柱13一侧壁的端部抵接，所述感温体3在弹簧伸缩方向上的长度与推杆4在弹簧伸缩方向上的长度相适配。所述感温体3与连接部133抵接，所述推杆4另一端与所述座体位于两个柱体之间的部分抵接。
所述壳体5内部设有导板6，所述导板对应推杆位置设置。导板通过铆接 方式固定在壳体内，且对应推杆位置设置，可防止推杆脱落。
所述壳体5内部设有铜帽9，所述感温体3设置于所述铜帽9内，所述连接部133呈圆柱体状，所述铜帽9的内部空间为圆柱体状，所述感温体3呈圆柱体状，所述连接部的外径与感温体的外径相等，所述铜帽的内径大于所述连接部的外径。弹簧柱的连接部和铜帽之间形成较大间隙配合，较大的间隙有利于感温体融化排出。
所述安装板10通过铆钉11固定于所述壳体的下端开口处以封闭所述下端开口，所述铜帽9抵靠于所述安装板10的内侧壁上。
优选地，所述壳体为陶瓷壳体，所述感温体采用触发机制高于300℃的材料。进一步使得温度保险丝可以适用于300℃以上的温度。
请参照图6-11，本申请的实施例三为：
与上述实施例二的区别在于，在壳体内增设电阻丝，具体为：所述壳体内设有一型腔，所述型腔内设有绝缘云母片15和电阻丝14，所述电阻丝14与设置在电极片7的焊接柱电连接，所述绝缘云母片15设置与电阻丝14与安装板10之间。通过上述结构，当产品使用在额定电流较大的电路中，电阻丝起灭弧作用，防止簧片脱离触点时产生拉弧。
综上所述，本申请提供的一种温度保险丝，改变了传统的将推杆与感温体直接接触来实现传动的方式，改为通过在两者之间增设一弹簧机构，实现推杆与感温体的间接传动，具体为：所述弹簧机构包括弹簧和弹簧柱，所述弹簧套设于弹簧柱一端且所述温度保险丝未被触发时所述弹簧处于压缩状态，所述感温体抵接于所述弹簧柱另一端，所述推杆一端与簧片抵接，所述推杆另一端与弹簧柱一侧壁的端部抵接，所述感温体在弹簧伸缩方向上的长度大于或等于推杆在弹簧伸缩方向上与弹簧柱抵接的长度，当感温体被触发时，弹簧的压缩弹力被释放，以使推杆另一端与弹簧柱分离，进而簧片在自身弹力的作用下与触点分离，以此来切断电路。通过上述结构来克服感温体老化所造成的电极接触不良的问题。并且具有耐高温的优点。
以上所述仅为本申请的实施例，并非因此限制本申请的专利范围，凡是利用本申请说明书及附图内容所作的等同变换，或直接或间接运用在相关的技 术领域，均同理包括在本申请的专利保护范围内。
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。
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。
最后应说明的是：以上实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的精神和范围。

Claims (10)

  1. 一种温度保险丝，其特征在于推杆及推杆弹簧，还包括弹簧机构、感温体；所述弹簧机构包括弹簧和弹簧柱，所述弹簧套设于弹簧柱一端且所述温度保险丝未被触发时所述弹簧处于压缩状态，所述感温体抵接于所述弹簧柱另一端，所述推杆一端与推杆弹簧抵接且所述温度保险丝未被触发时所述推杆弹簧处于压缩状态，所述推杆另一端与弹簧柱一侧壁的端部抵接，所述感温体在弹簧伸缩方向上的长度大于或等于推杆在弹簧伸缩方向上与弹簧柱抵接的长度。
  2. 根据权利要求1所述的温度保险丝，其特征在于，所述弹簧柱包括一座体、两个分别设置在所述座体两端且同侧的柱体以及设置在座体上的连接部，所述连接部与柱体处于座体的不同侧，所述弹簧套设于柱体上，所述感温体与连接部抵接，所述推杆另一端与所述座体位于两个柱体之间的部分抵接。
  3. 根据权利要求2所述的温度保险丝，其特征在于，所述温度保险丝还包括一壳体，所述壳体一端部设有两个间隔设置的电极片，两个所述电极片分别与簧片和触点一一对应电连接。
  4. 根据权利要求3所述的温度保险丝，其特征在于，所述壳体内部设有导板，所述导板对应推杆位置设置。
  5. 根据权利要求3所述的温度保险丝，其特征在于，所述壳体内部设有铜帽，所述感温体设置于所述铜帽内。
  6. 根据权利要求5所述的温度保险丝，其特征在于，所述连接部呈圆柱体状，所述铜帽的内部空间为圆柱体状，所述感温体呈圆柱体状，所述连接部的外径与感温体的外径相等，所述铜帽的内径大于所述连接部的外径。
  7. 根据权利要求5所述的温度保险丝，其特征在于，所述壳体还包括安装板，所述壳体另一端部具有开口，所述安装板通过铆钉固定于所述壳体的开口处以封闭所述开口，所述铜帽抵靠于所述安装板的内侧壁上。
  8. 根据权利要求7所述的温度保险丝，其特征在于，所述壳体内设有一型腔，所述型腔内设有绝缘云母片和电阻丝，所述电阻丝与设置在电极片的焊接柱电连接，所述绝缘云母片设置与电阻丝与安装板之间。
  9. 根据权利要求3所述的温度保险丝，其特征在于，所述壳体的材质为陶瓷或塑料。
  10. 根据权利要求1所述的温度保险丝，其特征在于，所述推杆的材质为陶瓷或塑料。
PCT/CN2022/113371 2021-08-18 2022-08-18 一种温度保险丝 WO2023020584A1 (zh)

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JP2013077411A (ja) * 2011-09-30 2013-04-25 Nec Schott Components Corp 可動接点型温度ヒューズ
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JP7522308B2 (ja) 2024-07-24
KR20230098149A (ko) 2023-07-03

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