CN2919510Y - High voltage drop-out type fuse with zero damping - Google Patents
High voltage drop-out type fuse with zero damping Download PDFInfo
- Publication number
- CN2919510Y CN2919510Y CN 200620090647 CN200620090647U CN2919510Y CN 2919510 Y CN2919510 Y CN 2919510Y CN 200620090647 CN200620090647 CN 200620090647 CN 200620090647 U CN200620090647 U CN 200620090647U CN 2919510 Y CN2919510 Y CN 2919510Y
- Authority
- CN
- China
- Prior art keywords
- contact
- switch
- voltage drop
- high voltage
- shell fragment
- 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.)
- Expired - Fee Related
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- Switch Cases, Indication, And Locking (AREA)
Abstract
The utility model provides a technical scheme of a free-of-resistance high-voltage drop-out fuse and intends to solve a technical problem that the high voltage drop-out type fuse has a big drop-out frictional resistance and always refuses to drop-out. In the technical proposal, an upper switch contact structure is composed of an upper arc contract surface, a lower arc contact surface and a spring switch. Namely, an arc distinguishing pipe is provided with a cylinder switch contact on an upper contact element. An upper fixed contact spring that supports the upper fixed contact of an insulating member is connected with the contact switch of the cylinder switch. A pressure-spring locking screw adjusted by the clamping pressure is used to realize the pressure adjustment. The technical scheme is simple in the structure, thereby realizing the goal of the free-fused drop-out technology and perfecting the switch contact performance.
Description
Technical field
The utility model relates to the high voltage drop-out type fuse cutout technology that is installed in high-voltage electric power circuit or distribution transformer high-pressure side, protection is provided in circuit or transformer short-circuit and overload.
Background technology
The high voltage protective switch that the expulsion tube that high voltage drop-out type fuse cutout is made of construction of switch and its supporting insulator are formed.As RW11-10 type high voltage drop-out type fuse cutout product, in the last moving contact part of its expulsion tube, its contact is a trapezoidal conductor wide at the top and narrow at the bottom, cooperate with supporting insulator upper static contact parts switch, the copper contact of these upper static contact parts is additional outward to be provided with the stainless steel shell fragment, and its elastic pressure puts on the two sides of trapezoidal conductor.Break away from upper static contact smoothly when this construction of switch is beneficial to expulsion tube fusing dialysis and fall; though and the existence of upper static contact elastic pressure has guaranteed the contact performance between contact; but the frictional resistance between contact also with it and deposit; manufacture and the actual a variety of causes such as existence that use central parts parameter index difference, corrosion in addition; usually can make fuse member only rely on own wt not break away from smoothly and fall, cause that power frequency recovery voltage makes the fuse second breakdown in the fuse interrupting process.
The utility model content
Goal of the invention of the present utility model is to provide a kind of switch contact structures of switch contact, without hindrance disengaging high voltage drop-out type fuse cutout that realization reliably comes off of changing.
For realizing above-mentioned technological invention purpose, the technical scheme of without hindrance disengaging high voltage drop-out type fuse cutout of the present utility model, its major technique content is: a kind of without hindrance disengaging high voltage drop-out type fuse cutout, its major technique characteristics are to be provided with the cylindrical switch contact in the last moving contact part of expulsion tube, what engage with this cylindrical switch switch contacts is the upper static contact shell fragment of supporting insulator upper static contact, this upper static contact shell fragment is provided with the cambered surface draw-in groove that cooperates with the last arc surface of last moving contact part cylindrical switch contact, also be provided with the installation support sheet that extends in the same way with the contact shell fragment in the upper static contact, be provided with the stage clip tie down screw between contact shell fragment and the installation support sheet.
The technical scheme of the without hindrance disengaging high voltage drop-out type fuse cutout that the utility model provides, switch contact has been avoided side direction elastic force retaining wedge and has been run the pass project organization jointly on it, adopted the without hindrance switch snap-in structure of contact up and down, when its fusing comes off operation, under without any the obstacle of frictional resistance, just can break away from naturally between cylinder switch movable contact and the fixed contact shell fragment, thereby overcome the technology drawback that the existing product refusal falls; In addition, in the present technique design, guaranteed in the upper static contact Component Design that it has enough contact-making surfaces and contact pressure, improved its switch contact performance, and simple in structure.
Description of drawings
Accompanying drawing is the main TV structure schematic diagram of this without hindrance disengaging high voltage drop-out type fuse cutout.
Embodiment
As shown in the figure, without hindrance disengaging high voltage drop-out type fuse cutout of the present utility model, its structure formation comprises that mainly with supporting insulator 4 be supporter, and terminals are provided with upper static contact parts 1 and the following fixed contact parts 5 that are connected with the parts of switch movable contact up and down 7,10 switches of expulsion tube 9 about it.Wherein be provided with cylindrical switch contact 8 in the last moving contact part 7 of expulsion tube 9, engage with described cylindrical switch contact 8 switches in the upper static contact parts 1 of supporting insulator 4 and be provided with upper static contact shell fragment 2, this upper static contact shell fragment 2 is provided with cambered surface draw-in groove 20, this cambered surface draw-in groove 20 is positioned at cylindrical switch contact 8 tops, with the tight contact matching of last arc surface of cylindrical switch contact 8.Be provided with the installation support sheet 3 that extends in the same way with upper static contact shell fragment 2 in the upper static contact parts 1 of supporting insulator 4, be provided with tie down screw 50 between this installation support sheet 3 and the upper static contact shell fragment 2, be arranged with the stage clip 6 of adjusting the shell fragment elastic pressure on the tie down screw 50.
Claims (1)
1, a kind of without hindrance disengaging high voltage drop-out type fuse cutout, it is characterized in that being provided with cylindrical switch contact (8) in the last moving contact part (7) of expulsion tube (9), what engage with this cylindrical switch switch contacts is the upper static contact shell fragment (2) of supporting insulator upper static contact, this upper static contact shell fragment is provided with the cambered surface draw-in groove (20) that cooperates with the last arc surface of last moving contact part cylindrical switch contact, also be provided with the installation support sheet (3) that extends in the same way with the contact shell fragment in the upper static contact, be provided with stage clip tie down screw (50) between contact shell fragment and the installation support sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620090647 CN2919510Y (en) | 2006-04-27 | 2006-04-27 | High voltage drop-out type fuse with zero damping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620090647 CN2919510Y (en) | 2006-04-27 | 2006-04-27 | High voltage drop-out type fuse with zero damping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2919510Y true CN2919510Y (en) | 2007-07-04 |
Family
ID=38217329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620090647 Expired - Fee Related CN2919510Y (en) | 2006-04-27 | 2006-04-27 | High voltage drop-out type fuse with zero damping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2919510Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101320660B (en) * | 2008-07-17 | 2010-10-06 | 秦宇翔 | High voltage permanent magnet type drop-out fuse |
| CN101471206B (en) * | 2008-03-14 | 2012-07-04 | 陆敏强 | Novel outdoor high-voltage drop type fuse |
| CN101937809B (en) * | 2009-06-30 | 2012-08-15 | 浙江赛菲特电气有限公司 | Tripping device for brake switching mechanism of drop fuse |
| CN101937808B (en) * | 2009-06-30 | 2012-08-15 | 浙江赛菲特电气有限公司 | Dropping type fuse |
| CN105590815A (en) * | 2016-03-14 | 2016-05-18 | 刘洪年 | Insulation protection arc-extinguishing drop-out fuse switch |
| CN114512377A (en) * | 2020-11-16 | 2022-05-17 | 爱那其斯株式会社 | Fuse for high-voltage fuse |
-
2006
- 2006-04-27 CN CN 200620090647 patent/CN2919510Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101471206B (en) * | 2008-03-14 | 2012-07-04 | 陆敏强 | Novel outdoor high-voltage drop type fuse |
| CN101320660B (en) * | 2008-07-17 | 2010-10-06 | 秦宇翔 | High voltage permanent magnet type drop-out fuse |
| CN101937809B (en) * | 2009-06-30 | 2012-08-15 | 浙江赛菲特电气有限公司 | Tripping device for brake switching mechanism of drop fuse |
| CN101937808B (en) * | 2009-06-30 | 2012-08-15 | 浙江赛菲特电气有限公司 | Dropping type fuse |
| CN105590815A (en) * | 2016-03-14 | 2016-05-18 | 刘洪年 | Insulation protection arc-extinguishing drop-out fuse switch |
| CN114512377A (en) * | 2020-11-16 | 2022-05-17 | 爱那其斯株式会社 | Fuse for high-voltage fuse |
| CN114512377B (en) * | 2020-11-16 | 2024-04-05 | 爱那其斯株式会社 | Fuse for high voltage fuse |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070704 Termination date: 20100427 |