CN201038042Y - Earth switch - Google Patents
Earth switch Download PDFInfo
- Publication number
- CN201038042Y CN201038042Y CNU2007200693034U CN200720069303U CN201038042Y CN 201038042 Y CN201038042 Y CN 201038042Y CN U2007200693034 U CNU2007200693034 U CN U2007200693034U CN 200720069303 U CN200720069303 U CN 200720069303U CN 201038042 Y CN201038042 Y CN 201038042Y
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- CN
- China
- Prior art keywords
- contact
- earthed switch
- moving contact
- cassette holder
- switch according
- 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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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model discloses a grounding switch, which comprises a static contact, a dynamic contact and a shell. The static contact is arranged in an insulating box and of binding-plum-shaped; the dynamic contact is bar-shaped; the static and dynamic contacts are connected in pulling-plugging type. The charged static contact is insulated with the surrounding edge by the utility model, which has the advantages of good in safety, low in cost and reducing the volume of an opening-closing-type tank; at the same time, the operation force for combining and separating is also reduced by the pulling-plugging type contact structure. The utility model can be widely used in various opening-closing-type tanks.
Description
Technical field:
The utility model relates to a kind of electric switch, relates in particular to a kind of earthed switch that is used for switch cubicle.
Background technology:
Earthed switch be in the electric wiring in order to the device of ground connection, it generally is installed in the switch cubicle.The structure of typical earthed switch illustrates earthed switch and includes fixed contact 1 ', moving contact 2 ', insulator 3 ' and operating grip 4 ' as shown in Figure 1.Usually fixed contact 1 ' connects electric loop, moving contact 2 ' ground connection, and insulator 3 ' makes at ordinary times between fixed contact 1 ' and the moving contact 2 ' and reaches electric insulation, thereby with the electric loop insulation against ground.
When electric loop need join with ground, when for example needing repairing, operating personnel can pull operating grip 4 ', made moving contact 2 ' rotation one angle so that engage with fixed contact 1 '.The structure of existing earthed switch is generally open type, charged fixed contact 1 ' is exposing all the time, this has not only greatly reduced the fail safe of earthed switch operation, and in order to guarantee necessary insulation property, in switch cubicle, just have to strengthen and other electric elements between mounting distance, thereby also just increased switch cubicle volume, improved the material cost of switch cubicle product.In addition, the fixed contact 1 ' of existing earthed switch is a duckbill, and moving contact 2 ' is a blade type, and the joint between them is a biting connecions, and this version has usually closes the big defective of branch operating physical force.
The utility model content:
Technical problem to be solved in the utility model be overcome the fail safe that existing earthed switch unenclosed construction brought low, make the shortcoming that the switch cubicle volume increases and cost improves, a kind of new-type earthed switch is provided, it has the fixed contact to external insulation structure, thereby improve the fail safe of itself operation, and make the switch cubicle reduced volume, reduce cost.
Another technical problem to be solved in the utility model is, overcomes the existing bigger defective of the dynamic and static contact operating physical force of earthed switch, and a kind of earthed switch is provided, and the connected mode of its dynamic and static contact is a plug-in, closes the little advantage of branch operating physical force thereby have.
The technical scheme in the invention for solving the technical problem is as follows:
A kind of earthed switch, it includes fixed contact, moving contact and shell, and this fixed contact is arranged in the insulation booth.
The insulation booth of earthed switch described in the utility model includes lid and cassette holder, this lid is bowl-shape and is inverted in the top of cassette holder, described fixed contact is fixed in the bottom of lid bowl-type inner chamber, described cassette holder is fixed on the shell, its inside is provided with and holds the cavity that moving contact passes through, the inwall of this cavity is provided with the spigot surface that one section guiding moving contact moves, and this spigot surface and moving contact outer peripheral face form the sliding relation of closing; Described fixed contact is a binding type quincunx, and described moving contact is bar-shaped, and as cylindrical, the connected mode of this dynamic and static contact is a plug-in; Described insulation booth is made by epoxy resin, the arc spraying mouth inside and outside the contiguous lid in described cassette holder top place is provided with the perforation insulation booth.
Compare with existing earthed switch, earthed switch described in the utility model is arranged at fixed contact in the insulation booth, thereby charged fixed contact and periphery are formed insulation, this has not only improved the fail safe of device operation greatly, and brought great benefit for the design and the manufacturing of switch cubicle, and can be under the prerequisite that guarantees insulation property, the mounting distance between reduction earthed switch and other electric elements, thereby dwindle the volume of switch cubicle, also reduced the material and the manufacturing cost of switch cubicle simultaneously.In addition, fixed contact of the present utility model is that binding type quincunx, moving contact are bar-shaped, thereby has realized deciliter connected mode of plug-in, and its operating physical force is far smaller than the cutter type of traditional biting connecions and the operating physical force of duckbill contact.
Description of drawings:
Fig. 1 is the structural representation of existing earthed switch.
Fig. 2 is a three-dimensional structure diagram of the present utility model.
Fig. 3 is the cutaway view of the dynamic and static contact assembly structure of the utility model.
Embodiment:
Now with specific embodiment the utility model being done one in conjunction with the accompanying drawings describes in detail.
Please in conjunction with consulting Fig. 2 and Fig. 3 structural representation of the present utility model.The diagram earthed switch includes fixed contact 1, moving contact 2, insulation booth 3, operating grip 4 and shell 5, and this fixed contact 1 is arranged in the insulation booth 3.Described insulation booth 3 is made by insulating material epoxy resin, and its fixed contact 1 that will connect outside energized circuit insulate mutually with the object that periphery has different potentials; This insulation booth 3 includes lid 31 and cassette holder 32, and this lid 31 is the bowl-shape of spill, and it has the inner chamber 34 of bowl-type, and described fixed contact 1 is fixed in the bottom of this bowl-type inner chamber 34, and described lid 31 is inverted in the top of cassette holder 32; Described cassette holder 32 is tubular, and its upper and lower respectively is provided with the end of flange-like, this upper end and the edge Joint of being inverted bowl-shape lid 31, and this bottom is fixed on the shell 5; Joint at the upper end of cassette holder 32, contiguous lid 31 and cassette holder 32 is provided with arc spraying mouth 33, and this arc spraying mouth 33 connects the inside and outside to discharge electric arc of insulation booths 3; The inside of described cassette holder 32 is provided with runs through cavity 35 up and down, the upper end of this cavity 35 passes to the inner chamber 34 of lid 31, the lower end passes to the inside of shell 5 altogether, described cavity 35 can hold moving contact 2 by and move up and down, its inwall is provided with the spigot surface 36 that one section guiding moving contact 2 moves, the peripheral shape of shape and moving contact 2 is complementary around this spigot surface 36, and the outer peripheral face of spigot surface 36 and moving contact 2 forms to slide and closes relation to reach the effect that steady guiding moving contact 2 moves.Described fixed contact 1 is binding type quincunx, Open Side Down for it, and described moving contact 2 is bar-shaped, and it is cylindrical copper rod in the illustrated embodiment, the mode that this dynamic and static contact 2 is connected with 1 is a plug-in, and promptly bar-shaped moving contact 2 inserts or extracts in the quincunx opening of fixed contact 1.
When operation earthed switch described in the utility model closes a floodgate, can pull operating grip 4 (see figure 2)s, and drive moving contact 2 by leverage and move up along the spigot surface 36 of insulation booth 3 cassette holders 32, when bar-shaped moving contact 2 inserts the plum blossom opening of fixed contact 1, the short circuit current of closing of circuit can produce powerful electric arc, this hard arc is just put to atmosphere by Vent in the insulation booth 3 by the arc spraying mouth 33 on cassette holder 32 tops, passes through moving contact 2 ground connection thereby finish the electric loop that links to each other with fixed contact 1.
Earthed switch described in the utility model is provided with the insulation system of sealing fixed contact 1, the advantage that therefore has the good and favourable switch cubicle reduced volume of fail safe, reduces cost, and what the structure of contact terminal of its plug-in of while had also reduced switch closes the branch operating physical force.The utility model can be widely used in all kinds of switch cubicles.
Claims (7)
1. an earthed switch includes fixed contact, moving contact and shell, it is characterized in that: described fixed contact is arranged in the insulation booth.
2. earthed switch according to claim 1, it is characterized in that: described insulation booth includes lid and cassette holder, this lid is bowl-shape and is inverted in the top of cassette holder, described fixed contact is fixed in the bottom of lid bowl-type inner chamber, described cassette holder is fixed on the shell, and its inside is provided with and holds the cavity that moving contact passes through.
3. earthed switch according to claim 2 is characterized in that: the place is provided with the arc spraying mouth that connects outside the insulation booth at the contiguous lid in described cassette holder top.
4. earthed switch according to claim 2 is characterized in that: the inwall of described cassette holder cavity is provided with the spigot surface that one section guiding moving contact moves, and this spigot surface and moving contact outer peripheral face form the sliding relation of closing.
5. earthed switch according to claim 1 and 2 is characterized in that: described fixed contact is a binding type quincunx, and described moving contact is bar-shaped, and the connected mode of this dynamic and static contact is a plug-in.
6. earthed switch according to claim 5 is characterized in that: described moving contact is cylindrical.
7. earthed switch according to claim 1 and 2 is characterized in that: described insulation booth is made by epoxy resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200693034U CN201038042Y (en) | 2007-04-25 | 2007-04-25 | Earth switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200693034U CN201038042Y (en) | 2007-04-25 | 2007-04-25 | Earth switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201038042Y true CN201038042Y (en) | 2008-03-19 |
Family
ID=39210561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200693034U Expired - Fee Related CN201038042Y (en) | 2007-04-25 | 2007-04-25 | Earth switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201038042Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104143465A (en) * | 2013-09-24 | 2014-11-12 | 国家电网公司 | High-speed earthing switch and its constituent earthing switch assembly unit |
| CN105428133A (en) * | 2015-11-20 | 2016-03-23 | 成都迅德科技有限公司 | Grounding switch |
-
2007
- 2007-04-25 CN CNU2007200693034U patent/CN201038042Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104143465A (en) * | 2013-09-24 | 2014-11-12 | 国家电网公司 | High-speed earthing switch and its constituent earthing switch assembly unit |
| CN105428133A (en) * | 2015-11-20 | 2016-03-23 | 成都迅德科技有限公司 | Grounding switch |
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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: 20080319 Termination date: 20100425 |