CN107958758B - Self-fusing piezoresistor - Google Patents
Self-fusing piezoresistor Download PDFInfo
- Publication number
- CN107958758B CN107958758B CN201711370017.6A CN201711370017A CN107958758B CN 107958758 B CN107958758 B CN 107958758B CN 201711370017 A CN201711370017 A CN 201711370017A CN 107958758 B CN107958758 B CN 107958758B
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- CN
- China
- Prior art keywords
- pin
- section
- hole
- connecting piece
- self
- Prior art date
- Legal status (The legal status 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 status listed.)
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- 239000007769 metal material Substances 0.000 claims abstract description 12
- 229910000679 solder Inorganic materials 0.000 claims description 2
- 230000008018 melting Effects 0.000 abstract description 6
- 238000002844 melting Methods 0.000 abstract description 6
- 238000003466 welding Methods 0.000 abstract description 6
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- 238000005476 soldering Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
Classifications
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/14—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
- Thermistors And Varistors (AREA)
Abstract
The invention discloses a self-fusing piezoresistor which comprises a body, a first pin, a second pin, a connecting piece and insulating elastic pieces, wherein one ends of the first pin and the second pin are respectively connected to conductive areas on two sides of the body, the surface of the body is covered with an insulating layer, the other end of the body is made of a low-melting-point metal material, a through hole is reserved, the self-fusing piezoresistor is fixedly connected with the through hole of a wiring terminal through the connecting piece, two insulating elastic pieces extend from one side surface of the body in parallel and are respectively opposite to the first pin and the second pin in parallel. The pin end of the self-breaking piezoresistor is connected with the wiring terminal through the connecting piece to replace the original welding mode, the pin end is made of a special low-melting-point metal material, when the current is overlarge, the generated heat reaches the melting point of the metal material, the pin is melted, the pin is disconnected with the wiring terminal, and the two terminals can be quickly separated after the melting is carried out due to the arrangement of the insulating elastic piece.
Description
Technical Field
The invention belongs to the field of electrical equipment, and particularly relates to a self-breaking piezoresistor.
Background
The piezoresistor is mainly used for carrying out voltage clamping when a circuit bears overvoltage and absorbing redundant current to protect sensitive devices, but on one hand, the conventional piezoresistor is usually welded with a wiring terminal in practical application, and no welding tool specially aiming at the product is available on the market at present, so that the scrapping of the device is easily caused by inaccurate welding position, meanwhile, the production efficiency is also very low, and on the other hand, when fusing occurs, two pins can still be contacted, and the protection of the circuit cannot be achieved.
Disclosure of Invention
The primary objective of the present invention is to provide a self-fusing piezoresistor, which can solve at least one of the above technical drawbacks, especially the technical drawbacks of the prior art that the resistor is difficult to weld and micro-touch is easy to occur after fusing.
Based on the above purpose, the invention adopts the following technical scheme:
The invention provides a self-fusing piezoresistor, comprising: the connecting device comprises a body, a first pin, a second pin, a connecting piece and insulating elastic pieces, wherein one ends of the first pin and the second pin are respectively connected to conductive areas on two sides of the body, an insulating layer is covered on the surface of the body, the other end of the body is made of a low-melting-point metal material, a through hole is reserved, the insulating elastic pieces are fixedly connected with the through hole of a wiring terminal in a matched mode through the connecting piece, two insulating elastic pieces extend out of one side face of the body in parallel and are respectively opposite to the first pin and the second pin in a parallel mode.
In one embodiment, the connection mode of the first pin and the second pin with the wiring terminal comprises riveting or bolting.
In one embodiment, the connection ends of the first pin and the second pin are made of 140-degree soldering tin.
In one embodiment, the insulating elastic sheet is integrally formed with the body, and the other end of the insulating elastic sheet is contacted with the bottom of the connecting piece.
The pin end of the self-breaking piezoresistor is connected with the wiring terminal through the connecting piece to replace the original welding mode, the pin end is made of special low-melting-point metal material 140-degree soldering tin, when the current is overlarge, the generated heat reaches the melting point of the metal material 140-degree, the pin is melted, so that the pin is disconnected with the wiring terminal, and the two terminals after the melting are quickly separated due to the arrangement of the insulating elastic piece.
Drawings
FIG. 1 is a schematic diagram of a self-breaking varistor coupled to a terminal block according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a self-breaking varistor according to an embodiment of the present invention without connecting terminals.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless expressly stated otherwise, as understood by those skilled in the art. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. The term "and/or" as used herein includes all or any element and all combination of one or more of the associated listed items.
It will be understood by those skilled in the art that all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs unless defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Referring to fig. 1 and 2, the present invention provides a self-breaking varistor, which includes:
The electric connector comprises a body 1, a first pin 2, a second pin 3, a connecting piece 4 and an insulating elastic piece 5, wherein one ends of the first pin 2 and the second pin 3 are respectively connected to conductive areas of two surfaces of the body 1, the surface of the body 1 is covered with an insulating layer, the other ends of the first pin 2 and the second pin 3 are made of low-melting-point metal materials, the first pin 2 and the second pin 3 comprise three sections, namely a first section, a second section and a third section, the first section is positioned in the conductive area in the insulating layer of the body 1, the second section is exposed to the outside and is used for connecting the first section and the third section, the third section is made of low-melting-point metal materials and is provided with a through hole, the through hole of the third section is matched with the through hole of the connecting terminal 6, the two terminals are overlapped together and are fixedly connected through the connecting piece 4, the connecting piece 4 passes through the through hole of the pin and exposes one section and contacts with the insulating elastic piece 5, and the two insulating elastic pieces 5 extend out of one side surface of the body 1 to be not smaller than the length of the opposite pins 2 and the opposite to the first section and the second section and the third section. After the connecting piece 4 passes through the through hole, the connecting piece can be propped against the insulating elastic piece to deform, when the third section of the pin is fused, the acting force of the insulating elastic piece 4 for restoring deformation enables the connecting piece 4 to be upward, and then the pin and the wiring terminal 6 are rapidly separated.
Further, the connection manner of the first pin 2, the second pin 3 and the connecting terminal 6 comprises riveting or bolting, which is easier to operate than conventional welding.
Preferably, the third section, which is the connecting end of the first pin 2 and the second pin 3, is made of 140 ° solder, and the materials of the first section and the second section are not limited.
Further, the insulating elastic sheet 5 is integrally formed with the body 1, and the other end of the insulating elastic sheet contacts with the bottom plane of the connecting piece 4. When the connecting piece 4 passes through the through hole, the bottom plane of the connecting piece 4 contacts with the insulating elastic piece 5, and when the connection of the pins and the wiring terminals is completed, the insulating elastic piece 5 deforms due to the further penetration of the bottom of the connecting piece 4, and the insulating elastic piece 5 and the pins are not parallel any more to form a certain angle.
The pin end of the self-breaking piezoresistor is connected with the wiring terminal through the connecting piece to replace the original welding mode, the pin end is made of special low-melting-point metal material 140-degree soldering tin, when the current is overlarge, the generated heat reaches the melting point of the metal material 140-degree, the pin is melted, so that the pin is disconnected with the wiring terminal, and the two terminals after the melting are quickly separated due to the arrangement of the insulating elastic piece.
The foregoing is only a partial embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.
Claims (3)
1. A self-fusing piezoresistor is composed of a main body with insulating layer on its surface and with a through hole for connecting it to the through hole of connecting terminal, the first and the second pins, connecting parts, and insulating elastic plates for respectively connecting said two pins,
The first pin and the second pin are respectively connected with the conductive areas of the two surfaces of the body, the surface of the body is covered with an insulating layer, the other ends of the first pin and the second pin are made of low-melting-point metal materials, the first pin and the second pin comprise three sections which are respectively a first section, a second section and a third section, the first section is positioned in the conductive area in the insulating layer of the body, the second section is exposed outside and is used for connecting the first section and the third section, the third section is made of low-melting-point metal materials and is provided with a through hole, the three sections are integrally formed, the through hole of the third section is matched with the through hole of the wiring terminal, the third section and the wiring terminal are overlapped together and are fixedly connected by a connecting piece, the connecting piece passes through the through hole of the third section and the through hole of the wiring terminal, then is exposed to a section and is contacted with the insulating elastic piece, the two insulating elastic pieces extend out of the first side surface of the body in parallel to be not smaller than the lengths of the second pin and the third pin, and are respectively parallel to the first pin and the second pin, the connecting piece is opposite to the first pin and the second pin, the connecting piece passes through the through hole of the third section and the through hole of the wiring terminal, the first section and the second pin can be deformed and the second pin rapidly and the second pin can be deformed upwards, and the first elastic piece and the second elastic piece can be deformed and deformed,
The insulating elastic sheet is integrally formed with the body, and the other end of the insulating elastic sheet is contacted with the bottom of the connecting piece.
2. A self-fusing piezoresistor as set forth in claim 1 wherein the first and second pins are connected to the terminal by riveting or bolting.
3. A self-breaking varistor as claimed in claim 1, wherein the third sections of the first and second pins are made of 140 ° solder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711370017.6A CN107958758B (en) | 2017-12-19 | 2017-12-19 | Self-fusing piezoresistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711370017.6A CN107958758B (en) | 2017-12-19 | 2017-12-19 | Self-fusing piezoresistor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107958758A CN107958758A (en) | 2018-04-24 |
| CN107958758B true CN107958758B (en) | 2024-05-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711370017.6A Active CN107958758B (en) | 2017-12-19 | 2017-12-19 | Self-fusing piezoresistor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107958758B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120148991A (en) * | 2025-03-25 | 2025-06-13 | 桂林至敏电子科技有限公司 | A varistor with a fuse at a specific location |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201126744Y (en) * | 2007-12-21 | 2008-10-01 | 隆科电子(惠阳)有限公司 | Nail type superheating diasmechanism tasis |
| CN201242920Y (en) * | 2008-07-21 | 2009-05-20 | 烟台玛斯特防雷设备有限公司 | MOV overfire thread-losing protection device |
| CN201266524Y (en) * | 2008-08-20 | 2009-07-01 | 常州市创捷防雷电子有限公司 | Surge protector |
| CN201733089U (en) * | 2010-08-04 | 2011-02-02 | 浙江雷泰电气有限公司 | Surge protector |
| JP2012109078A (en) * | 2010-11-16 | 2012-06-07 | Otowa Denki Kogyo Kk | Spd with separator |
| CN203673907U (en) * | 2014-01-09 | 2014-06-25 | 东莞令特电子有限公司 | Cut-off protection type varistor |
| CN204179652U (en) * | 2014-10-14 | 2015-02-25 | 广西地凯科技有限公司 | A kind of thermal release device of modular type lightning protection for power supply |
| CN207818290U (en) * | 2017-12-19 | 2018-09-04 | 上海盎特电气有限公司 | A kind of fusing piezoresistor certainly |
-
2017
- 2017-12-19 CN CN201711370017.6A patent/CN107958758B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201126744Y (en) * | 2007-12-21 | 2008-10-01 | 隆科电子(惠阳)有限公司 | Nail type superheating diasmechanism tasis |
| CN201242920Y (en) * | 2008-07-21 | 2009-05-20 | 烟台玛斯特防雷设备有限公司 | MOV overfire thread-losing protection device |
| CN201266524Y (en) * | 2008-08-20 | 2009-07-01 | 常州市创捷防雷电子有限公司 | Surge protector |
| CN201733089U (en) * | 2010-08-04 | 2011-02-02 | 浙江雷泰电气有限公司 | Surge protector |
| JP2012109078A (en) * | 2010-11-16 | 2012-06-07 | Otowa Denki Kogyo Kk | Spd with separator |
| CN203673907U (en) * | 2014-01-09 | 2014-06-25 | 东莞令特电子有限公司 | Cut-off protection type varistor |
| CN204179652U (en) * | 2014-10-14 | 2015-02-25 | 广西地凯科技有限公司 | A kind of thermal release device of modular type lightning protection for power supply |
| CN207818290U (en) * | 2017-12-19 | 2018-09-04 | 上海盎特电气有限公司 | A kind of fusing piezoresistor certainly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107958758A (en) | 2018-04-24 |
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