CN204011097U - For the fixed contact of portable single-phase air bypass switch - Google Patents
For the fixed contact of portable single-phase air bypass switch Download PDFInfo
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- CN204011097U CN204011097U CN201420344701.2U CN201420344701U CN204011097U CN 204011097 U CN204011097 U CN 204011097U CN 201420344701 U CN201420344701 U CN 201420344701U CN 204011097 U CN204011097 U CN 204011097U
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- bypass switch
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Abstract
The utility model relates to a kind of fixed contact for portable single-phase air bypass switch, the fixed contact body that electric conducting material is made, the inside of fixed contact body is formed with centre bore, middle and upper part at the center of fixed contact body hole wall is provided with step surface, in centre bore, the diameter of this step surface top is larger than the diameter of below, on step surface, be formed with support shoulder, the plug insertion of moving contact when the top of support shoulder is fixed contact and switch on of moving contact, there is cannelure in the upper arranged outside in support shoulder of center hole wall, in cannelure, be provided with spring touch finger, below cannelure, be provided with multiple for by the air vent hole of arc extinguishing gases, air vent hole extends on the lower surface of fixed contact body.Static contact structure of the present utility model is simple, and manufacture craft is simple, and manufacturing cost reduces, and has arc-suppression function, and this fixed contact is electrically connected more reliable with moving contact, and longer service life is of a specified duration.
Description
Technical field
The utility model relates to a kind of mesolow switch module, is specially a kind of fixed contact for portable single-phase air bypass switch.
Background technology
At present, common high-voltage switch fixed contact is normally arranged in insulation contact box, relies on contact box to insulate completely, has no arc-rupturing capacity, and after long-term use, contact box is inner can be burnt out by electric arc.On the fixed contact of more newly designed portable single-phase air bypass switches, be provided with multiple teeth, fixed contact engages to realize combined floodgate by the tooth on fixed contact and moving contact during with switch on of moving contact, because this way of contact contact site radius of curvature is little, in the time of separating brake, electric arc is easy to the position of tooth to burn out, while causing engaging, contact bad, can produce a large amount of electric sparks, accelerate the process that it burns out, affect its useful life, and tooth when engagement, the status requirement of tooth is higher, must align completely and could realize engagement, therefore, positioning accuracy request to by-pass switch internal part is higher, cause internal structure complexity, manufacturing cost is high.
Summary of the invention
The purpose of this utility model is, for the problem easily burning out that in background technology, the pointed existing fixed contact for portable single-phase air bypass switch exists, to provide a kind of fixed contact for portable single-phase air bypass switch that can solve foregoing problems.
The technical scheme that realizes goal of the invention of the present utility model is as follows:
A kind of fixed contact for portable single-phase air bypass switch, the fixed contact body that electric conducting material is made, the inside of fixed contact body is formed with centre bore, middle and upper part at the center of fixed contact body hole wall is provided with step surface, in centre bore, the diameter of this step surface top is larger than the diameter of below, on step surface, be formed with support shoulder, the plug insertion of moving contact when the top of support shoulder is fixed contact and switch on of moving contact, there is cannelure in the upper arranged outside in support shoulder of center hole wall, in cannelure, be provided with spring touch finger, below cannelure, be provided with multiple for by the air vent hole of arc extinguishing gases, air vent hole extends on the lower surface of fixed contact body.
For the ease of the assembling of fixed contact, the upper and lower of described fixed contact body is cylindrical, and the diameter on top is greater than the diameter of bottom, is provided with annular groove in intermediate location.
Described centre bore is circular port.
In order to strengthen throughput, while making moving contact and fixed contact separating brake, the gas that air vent hole passes through can be fast by arc extinction, and described cannelure below is provided with 6-12 air vent hole.
The advantage of the fixed contact for portable single-phase air bypass switch of the present utility model is: 1) static contact structure of the present utility model is simplified, and manufacture craft is simple, and manufacturing cost reduces, 2) fixed contact of the present utility model changes face into the combined floodgate engagement system of moving contact and contacts, and in the plug insertion of moving contact, be provided with annular spring touch finger, the plug contact of spring touch finger and moving contact is better, the reliability connecting is high, and the position accuracy demand of moving contact and fixed contact is reduced, contribute to the simplification of by-pass switch internal structure, 3) below spring touch finger, be provided with multiple air vent holes, in the time of moving contact and fixed contact separating brake, the air-flow producing can arrive the position at spring touch finger place fast by air vent hole, the arc extinction producing can be fast by separating brake time, contribute to extend the useful life of moving contact and fixed contact, and the contact area of moving contact and fixed contact increases, also be conducive to prevent that contact-making surface position is burned, also contribute to extend the useful life of moving contact and fixed contact, and spring touch finger and fixed contact and moving contact to compare cost lower, it is convenient to change, arrange like this, be conducive to reduce maintenance of equipment cost.
Brief description of the drawings
Fig. 1 is the profile schematic diagram of the fixed contact for portable single-phase air bypass switch of the present utility model;
Fig. 2 is that the A-A of the fixed contact for portable single-phase air bypass switch of the present utility model is to cross-sectional schematic;
In figure, 1 is fixed contact body, and centered by 2 hole, and 3 for supporting shoulder, and 4 is plug insertion, and 5 is cannelure, and 6 is spring touch finger, and 7 is air vent hole, and 8 is annular groove.
Embodiment
Referring to figs. 1 through a kind of fixed contact for portable single-phase air bypass switch shown in Fig. 2, the fixed contact body 1 that electric conducting material is made, the inside of fixed contact body 1 is formed with centre bore 2, middle and upper part at the center of fixed contact body 1 hole wall is provided with step surface, in centre bore 2, the diameter of this step surface top is larger than the diameter of below, on step surface, be formed with and support shoulder 3, the plug insertion 4 of moving contact when the top of support shoulder 3 is fixed contact and switch on of moving contact, there is cannelure 5 in the upper arranged outside in support shoulder 3 of center hole wall, in cannelure 5, be provided with spring touch finger 6, below cannelure 5, be provided with multiple for passing through the air vent hole 7 of arc extinguishing gases, air vent hole 7 extends on the lower surface of fixed contact body 1.
For the ease of the assembling of fixed contact, the upper and lower of described fixed contact body 1 is cylindrical, and the diameter on top is greater than the diameter of bottom, is provided with annular groove 8 in intermediate location.
According to the design of by-pass switch internal structure, described centre bore circular hole.Certainly centre bore can be also slotted eye or polygonal hole.
In order to strengthen throughput, while making moving contact and fixed contact separating brake, the gas that air vent hole passes through can be fast by arc extinction, and described cannelure 5 belows are provided with 6-12 air vent hole 7.The quantity of air vent hole 7 will be determined according to the situation to arc extinction, the quantity of air vent hole is more, air-flow is overstepping the bounds of propriety loose, the scope blowing to is wider, but the pressure of air-flow is less, therefore, the quantity of air vent hole is preferably 6-12, in specific implementation process, according to the diameter of fixed contact, and the diameter of air vent hole can change the quantity of air vent hole.
The novel fixed contact for portable single-phase air bypass switch of this use in use, the lower end of fixed contact is fixedly connected with the contact tube of by-pass switch inside, the plug of moving contact is set to cylindrical, the diameter in the hole of the support shoulder top of diameter and fixed contact adapts, in the time closing a floodgate, the plug of moving contact is inserted in the hole of supporting shoulder top, by supporting shoulder 3, the end face of moving contact is carried out to support limit, in the process that spring touch finger 6 inserts at the plug of moving contact, deform, and the plug of moving contact is formed to certain elastic pressure, make to form and well conduct between moving contact and fixed contact.In the time of separating brake, moving contact is separated from fixed contact, and in separating, the below of fixed contact produces a large amount of air-flows, and this part air-flow enters into the position at spring touch finger 6 places fast by air vent hole, and the electric arc that separating brake is produced extinguishes fast.Fixed contact for portable single-phase air bypass switch of the present utility model has been simplified the structure of fixed contact, has reduced production cost, and can effectively extend the useful life of moving contact and fixed contact.
Above embodiment is the explanation to embodiment of the present utility model; but not to restriction of the present utility model; person skilled in the relevant technique is not in the situation that departing from spirit and scope of the present utility model; can also make various conversion and variation and obtain the corresponding technical scheme being equal to, therefore all technical schemes that are equal to all should be included into scope of patent protection of the present utility model.
Claims (4)
1. the fixed contact for portable single-phase air bypass switch, it is characterized in that: the fixed contact body that electric conducting material is made, the inside of fixed contact body is formed with centre bore, middle and upper part at the center of fixed contact body hole wall is provided with step surface, in centre bore, the diameter of this step surface top is larger than the diameter of below, on step surface, be formed with support shoulder, the plug insertion of moving contact when the top of support shoulder is fixed contact and switch on of moving contact, there is cannelure in the upper arranged outside in support shoulder of center hole wall, in cannelure, be provided with spring touch finger, below cannelure, be provided with multiple for by the air vent hole of arc extinguishing gases, air vent hole extends on the lower surface of fixed contact body.
2. the fixed contact for portable single-phase air bypass switch according to claim 1, is characterized in that: the upper and lower of described fixed contact body is cylindrical, and the diameter on top is greater than the diameter of bottom, is provided with annular groove in intermediate location.
3. the fixed contact for portable single-phase air bypass switch according to claim 1, is characterized in that: described centre bore is circular port.
4. the fixed contact for portable single-phase air bypass switch according to claim 1, is characterized in that: described cannelure below is provided with 6-12 air vent hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420344701.2U CN204011097U (en) | 2014-06-25 | 2014-06-25 | For the fixed contact of portable single-phase air bypass switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420344701.2U CN204011097U (en) | 2014-06-25 | 2014-06-25 | For the fixed contact of portable single-phase air bypass switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204011097U true CN204011097U (en) | 2014-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420344701.2U Active CN204011097U (en) | 2014-06-25 | 2014-06-25 | For the fixed contact of portable single-phase air bypass switch |
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| CN (1) | CN204011097U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107910213A (en) * | 2017-12-13 | 2018-04-13 | 贵州航天电器股份有限公司 | A kind of by-pass switch |
| CN109378229A (en) * | 2018-11-15 | 2019-02-22 | 许继（厦门）智能电力设备股份有限公司 | What a kind of insulator inserts made contact electrically connects structure |
-
2014
- 2014-06-25 CN CN201420344701.2U patent/CN204011097U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107910213A (en) * | 2017-12-13 | 2018-04-13 | 贵州航天电器股份有限公司 | A kind of by-pass switch |
| CN109378229A (en) * | 2018-11-15 | 2019-02-22 | 许继（厦门）智能电力设备股份有限公司 | What a kind of insulator inserts made contact electrically connects structure |
| CN109378229B (en) * | 2018-11-15 | 2024-03-12 | 许继（厦门）智能电力设备股份有限公司 | Electric connection structure with insulator insert as contact |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |