WO2016173250A1 - 电涌保护器 - Google Patents
电涌保护器 Download PDFInfo
- Publication number
- WO2016173250A1 WO2016173250A1 PCT/CN2015/095935 CN2015095935W WO2016173250A1 WO 2016173250 A1 WO2016173250 A1 WO 2016173250A1 CN 2015095935 W CN2015095935 W CN 2015095935W WO 2016173250 A1 WO2016173250 A1 WO 2016173250A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sleeve
- metal
- insulating sleeve
- disposed
- connecting terminal
- Prior art date
Links
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
- H01C7/12—Overvoltage protection resistors
-
- 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
Definitions
- the present invention relates to a surge protector.
- surge protector in the It is used to protect various electrical equipment in low-voltage distribution systems from lightning overvoltage, operating overvoltage and other conditions.
- the existing surge protector has poor sealing performance and does not have the functions of waterproofing, dustproof and anti-corrosion. Under the harsh environment, it may be affected by environmental factors, and the inside is corroded by sand and liquid, resulting in a surge protector. The work is not working properly.
- the present invention proposes a surge protector that solves the problem of poor sealing in the prior art.
- the utility model comprises a casing with a bottom end closed top opening, a first insulating sleeve disposed at the bottom end of the casing, an aluminum piece disposed in the first insulating sleeve, a varistor chip disposed on the aluminum piece and electrically connected to the aluminum piece a metal connecting terminal disposed on the varistor chip and electrically connected to the varistor chip, a second insulating sleeve disposed on the metal connecting terminal, a spacer disposed on the second insulating sleeve, and a spacer disposed on the second insulating sleeve a circlip on the gasket, the varistor chip is received in the first insulating sleeve, a middle portion of the metal connecting terminal forms a step portion, and the second insulating portion is sleeved on the metal connecting terminal at a portion above the step portion a first sleeve, a second sleeve disposed on the lower portion of the metal connecting terminal at
- the varistor chip since the varistor chip is located at the bottom of the casing, the varistor chip is placed in the first insulating sleeve, and the metal connecting terminal is crimped.
- Varistor chip And inserting a second insulating sleeve on the metal connecting terminal, wherein the metal connecting terminal is provided with a first collar and a second collar respectively abutting in the second insulating sleeve to function as an insulation and an internal seal.
- the gasket is crimped on the second insulating sleeve and crimped by a snap spring to serve as an external seal to achieve dustproof and waterproof effects.
- Figure 1 is a schematic longitudinal sectional view of a surge protector of the present invention.
- 100 surge protector; 10, housing; 20, first insulating sleeve; 30, aluminum sheet; 40, varistor chip; 50 , metal connecting terminal; 60, second insulating sleeve; 70, gasket; 80, circlip; 11, bottom; 12, side; 21, bottom wall; 22, annular side wall; , the first metal column; 52, the second metal column; 53, the third metal column; 91, the first ring; 55, the step portion; 92, the second ring; 82, the disc spring; 61, the first sleeve ; 62 , the second sleeve; 63, the connecting ring; 93, the third ring.
- the surge protector 100 is a voltage-limited surge protector including a housing 10 and is disposed in the housing 10 a first insulating sleeve 20, an aluminum sheet 30 disposed in the first insulating sleeve 20, a varistor chip 40 disposed on the aluminum sheet 30 and electrically connected to the aluminum sheet 30, and a varistor chip disposed on the varistor chip 40 a metal connecting terminal 50 electrically connected to the varistor chip 40, a second insulating sleeve 60 disposed on the metal connecting terminal 50, a spacer 70 disposed on the second insulating sleeve 60, and a spacer disposed on the spacer Circlip 80 on 70.
- the housing 10 may be an aluminum outer casing having a cylindrical shape with a bottom end closing the top opening.
- the housing 10 includes a circular bottom surface 11 and the bottom surface The outer periphery of 11 is vertically extended upwardly to form a side 12 .
- the first insulating sleeve 20 is received in the housing 10 and located at the bottom end of the housing 10.
- the first insulating sleeve 20 The insulating sleeve for the flame retardant material comprises an annular bottom wall 21 and an annular side wall 22 extending vertically upward from the outer periphery of the bottom wall 21.
- the bottom wall 21 of the first insulating sleeve 20 and the housing 10 The periphery of the bottom surface is in contact with the annular side wall 22 of the first insulating sleeve 20 in contact with the inner wall of the housing 10.
- the aluminum sheet 30 has a circular plate shape and has the same thickness as the bottom wall 21 of the first insulating sleeve 20, and has the same size as the first insulating sleeve 20
- the bottom wall 21 has the same inner diameter, and the aluminum piece 30 is just received in the bottom 21 wall of the first insulating cover 20.
- the varistor chip 40 has a circular plate shape and a thickness thereof and an annular sidewall of the first insulating sleeve 20.
- the height of 22 is the same as the inner diameter of the annular side wall 22 of the first insulating sleeve 20, and the varistor chip 40 is just received in the annular side wall of the first insulating sleeve 20.
- the upper and lower surfaces of the varistor chip 40 are respectively plated with silver, and a glass glaze layer is provided on the side.
- the metal connection terminal 50 may be a copper connection terminal including a first metal post 51 disposed on the varistor chip 40. a second metal post 52 connected to the top end of the first metal post 51 and a third metal post 53 connected to the top end of the second metal post 52.
- the first metal pillar 51 and the second metal pillar 52 And the third metal column 53 is cylindrical and its central axis is on the same straight line.
- the outer diameter of the first metal post 51 is the same as the outer diameter of the aluminum piece 30, and is smaller than the outer diameter of the varistor chip 40, In order to ensure that the metal connection terminal 50 and the aluminum piece 30 are completely in contact with the varistor chip 40, to ensure that the lightning current does not pass through the varistor chip under the lightning overvoltage condition, the metal connection terminal 50 and the aluminum piece are caused. 30 Direct conduction.
- the outer diameter of the second metal post 52 is larger than the outer diameter of the first metal post 51.
- a first collar 91 is sleeved on the top end of the second metal post 52.
- the third metal column 53 The outer diameter is smaller than the outer diameters of the first metal post 51 and the second metal post 52, and a step portion is formed between the second metal post 52 and the third metal post 53. .
- a second collar 92 is sleeved and fixed in the middle of the third metal column.
- the bottom end of the third metal post 53 is sleeved by a disc spring 82, and the periphery of the disc spring 82 abuts against the step portion 55.
- the second insulating sleeve 60 is a flame-retardant insulating sleeve, and is disposed on the second metal pillar 52 and the third metal pillar 53 of the metal connecting terminal 50.
- the first sleeve 61 is sleeved on the outer periphery of the top end of the second metal column 52
- the second sleeve 62 is sleeved on the outer periphery of the third metal column 53, and is connected to the first sleeve 61 and the second sleeve 62.
- the connection between the rings 63 The first sleeve 61 extends in the longitudinal direction of the second metal post 52 with its central axis overlapping the central axis of the second metal post 52.
- the first sleeve 61 The inner diameter is slightly larger than the outer diameter of the second metal post 52, and the inner wall abuts against the outer wall of the first collar 91, and the outer wall abuts against the inner wall of the housing 10.
- the second sleeve 62 is along the third metal 53 The longitudinal extension of the central axis overlaps the central axis of the third metal post 53.
- the inner diameter of the second sleeve 62 is slightly larger than the outer diameter of the third metal post 53, and the inner wall and the second collar 92 The outer wall is against.
- the connecting ring 63 is located above the step portion 55 and abuts against the disc spring 82, and its outer periphery is perpendicularly connected to the top end of the first sleeve 61, and the inner circumference and the second sleeve 62 The bottom end is connected vertically.
- the bottom end of the second sleeve 62 is sleeved with a third collar 93.
- the third collar 93 is located on the connecting ring 63 and has the same width as the connecting ring 63. That is, the third collar 93
- the inner side abuts against the bottom end of the second sleeve 92 and the outer side abuts against the housing 10 of the surge protector 100.
- the gasket 70 is annular and sleeved on the second sleeve 62 of the second insulating sleeve 60 and sandwiched between the retaining spring 80 and the second insulating sleeve. 60 between the connecting rings 63.
- the spacer 70 has the same width as the width of the connecting ring 63, the inner side of which abuts against the second sleeve 62, and the outer side of the housing 10 of the surge protector 100. Affordable.
- the retaining spring 80 is sleeved on the second sleeve 62 of the second insulating sleeve 60 and abuts against the spacer 70.
- the circlip 80 The inner side of the second sleeve 62 abuts against the outer wall of the second sleeve 62, and the outer side thereof is engaged in the card slot of the inner wall of the housing 10 of the surge protector 100.
- the surge protector 100 is placed in the first insulating sleeve because the varistor chip 40 is located at the bottom of the housing 10.
- the metal connecting terminal 50 is crimped to the varistor chip 40
- the second insulating sleeve 60 is sleeved on the metal connecting terminal 50
- the metal connecting terminal 50 is respectively provided against the second insulating sleeve.
- the first ring 91 and the second ring 92 in the 60 are used for the function of insulation and internal sealing
- the third sleeve 93 is sleeved on the second insulating sleeve 60, and the pad is pressed on the third ring 93.
- the varistor chip 40 is larger than the metal connection terminal 50 and the aluminum sheet 30
- the outer diameter of the metal connection terminal 50 and the varistor chip 40 are in surface contact, and have the advantages of large flow rate, rapid flow, and low residual voltage. Due to the varistor chip 40
- the outer periphery is coated with a glass glaze layer and is located in the first insulating sleeve 20, and the first insulating sleeve 20 is made of a flame retardant material even if the varistor chip 40 It is punctured and ignited, and it is impossible to ignite other parts in the casing.
- the open flame is extinguished in the casing to achieve the purpose of fire prevention. Due to the structure of the metal connection terminal 50, the housing 10 is made There is sufficient air space inside, and the outer wall has a large thickness to achieve the purpose of explosion protection.
- the surge protector 100 can still work normally under harsh environments, improving the safety of the surge protector.
- the disc spring 82 The number of the second insulating sleeve 60 is directly disposed on the step portion 55 of the metal connecting terminal 50, which may be one or two or more, and may not be provided with a disc spring. .
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Thermistors And Varistors (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
Description
Claims (9)
- 一种电涌保护器,其特征在于:包括底端封闭顶端开口的壳体、设于该壳体内底端的第一绝缘套、设于该第一绝缘套内的铝片、设于该铝片上并与铝片电连接的压敏电阻芯片、设于该压敏电阻芯片上并与压敏电阻芯片电连接的金属连接端子、设于该金属连接端子上的第二绝缘套、设于该第二绝缘套上的垫片及设于该垫片上的卡簧,所述压敏电阻芯片收容于第一绝缘套内,所述金属连接端子的中部形成一台阶部,所述第二绝缘包括套设于金属连接端子于台阶部上方部分的第一套筒、套设于金属连接端子于台阶部下方部分的第二套筒及连接于第一套筒与第二套筒之间的连接环,所述连接环位于台阶部上,所述第二套筒的外侧与壳体的内壁相抵靠,所述金属连接端子上于靠近台阶部的位置及台阶部上方部分的中部分别套设有第一套环及第二套环,所述第一套环及第二套环的内侧固定于金属连接端子上,第一套环的外周缘与第一套筒的内壁相抵靠,第二套环的外周缘与第二套筒的内壁相抵靠,所述垫片夹设于卡簧与第二绝缘套的连接环之间,所述卡簧的内侧与第二绝缘套的外壁相抵靠,其外侧卡设于壳体内壁内。
- 如权利要求1所述的电涌保护器,其特征在于:还包括套设于金属连接端子上并位于台阶部上的至少一碟簧,所述第二绝缘套的连接环的下表面与碟簧相抵靠。
- 如权利要求1所述的电涌保护器,其特征在于:所述第二套筒的底端套设有一第三套环,该第三套环位于连接环上,其宽度与连接环相同,所述垫片位于第三套环上。
- 如权利要求1所述的电涌保护器,其特征在于:所述金属连接端子包括设于压敏电阻芯片上的第一金属柱、由该第一金属柱顶端向上延伸的第二金属柱及由该第二金属柱顶端向上延伸的第三金属柱,所述台阶部位于第二金属柱与第三金属柱之间,所述第一金属柱、第二金属柱及第三金属柱均为圆柱状,其中心轴线在同一条直线上,所述第一套筒套设于第二金属柱上,所述第二套筒套设于第三金属柱上。
- 如权利要求4所述的电涌保护器,其特征在于:所述第一金属柱的外径与铝片的外径相同,且均小于压敏电阻芯片的外径,所述第三金属柱的外径小于第一金属柱的外径。
- 如权利要求1至5中任何一项所述的电涌保护器,其特征在于:所述第一绝缘套包括一环形的底壁及由该底壁的外周缘向上垂直延伸的环形侧壁,所述铝片设于该第一绝缘套的底壁内,该铝片为圆形板状,其厚度与第一绝缘套的底壁厚度相同,其大小与第一绝缘套的底壁的内径相等,所述压敏电阻芯片收容于环形侧壁内,其厚度与第一绝缘套的环形侧壁的高度相同,其大小与第一绝缘套的环形侧壁的内径相同。
- 如权利要求1所述的电涌保护器,其特征在于:所述压敏电阻芯片的外径均大于铝片的外径及金属连接端子底端的外径。
- 如权利要求1至5中任何一项所述的电涌保护器,其特征在于:所述压敏电阻芯片的上、下表面分别镀银,侧面设有玻璃釉层。
- 如权利要求1至5中任何一项所述的电涌保护器,其特征在于:所述第一绝缘套及第二绝缘套均为阻燃材料绝缘套。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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CN201510209888.4A CN104852369B (zh) | 2015-04-29 | 2015-04-29 | 电涌保护器 |
CN201510209888.4 | 2015-04-29 |
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WO2016173250A1 true WO2016173250A1 (zh) | 2016-11-03 |
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PCT/CN2015/095935 WO2016173250A1 (zh) | 2015-04-29 | 2015-11-30 | 电涌保护器 |
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CN (1) | CN104852369B (zh) |
WO (1) | WO2016173250A1 (zh) |
Families Citing this family (2)
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CN104852369B (zh) * | 2015-04-29 | 2017-12-22 | 陈斌 | 电涌保护器 |
CN106941254B (zh) * | 2016-01-05 | 2019-04-16 | 陈斌 | 电涌保护器的底座 |
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CN2197730Y (zh) * | 1994-09-15 | 1995-05-17 | 安徽省合能电气研究所 | 高能氧化锌压敏电阻器 |
CN101017718A (zh) * | 2007-02-15 | 2007-08-15 | 广东省佛山科星电子有限公司 | 大通流限压型电源电涌保护器 |
CN101938121A (zh) * | 2010-09-03 | 2011-01-05 | 王必军 | 防潮高密封电涌保护器 |
CN104852369A (zh) * | 2015-04-29 | 2015-08-19 | 陈斌 | 电涌保护器 |
CN204696673U (zh) * | 2015-04-29 | 2015-10-07 | 陈斌 | 电涌保护器 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003189466A (ja) * | 2001-12-13 | 2003-07-04 | Daito Communication Apparatus Co Ltd | サージ防護装置 |
CN100389529C (zh) * | 2005-10-25 | 2008-05-21 | 广东省佛山科星电子有限公司 | 一种含有压敏电阻片的电涌保护器模块 |
CN101546910B (zh) * | 2009-04-29 | 2011-01-26 | 黄海舟 | 一种电涌保护器 |
CN202455062U (zh) * | 2012-03-12 | 2012-09-26 | 杭州国民电气有限公司 | 一种电涌保护器 |
CN104505817A (zh) * | 2015-01-13 | 2015-04-08 | 四川中光防雷科技股份有限公司 | 小型化高可靠电涌保护器 |
-
2015
- 2015-04-29 CN CN201510209888.4A patent/CN104852369B/zh active Active
- 2015-11-30 WO PCT/CN2015/095935 patent/WO2016173250A1/zh active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2197730Y (zh) * | 1994-09-15 | 1995-05-17 | 安徽省合能电气研究所 | 高能氧化锌压敏电阻器 |
CN101017718A (zh) * | 2007-02-15 | 2007-08-15 | 广东省佛山科星电子有限公司 | 大通流限压型电源电涌保护器 |
CN101938121A (zh) * | 2010-09-03 | 2011-01-05 | 王必军 | 防潮高密封电涌保护器 |
CN104852369A (zh) * | 2015-04-29 | 2015-08-19 | 陈斌 | 电涌保护器 |
CN204696673U (zh) * | 2015-04-29 | 2015-10-07 | 陈斌 | 电涌保护器 |
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CN104852369A (zh) | 2015-08-19 |
CN104852369B (zh) | 2017-12-22 |
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