CN204242825U - A kind of contact switch - Google Patents
A kind of contact switch Download PDFInfo
- Publication number
- CN204242825U CN204242825U CN201420781794.5U CN201420781794U CN204242825U CN 204242825 U CN204242825 U CN 204242825U CN 201420781794 U CN201420781794 U CN 201420781794U CN 204242825 U CN204242825 U CN 204242825U
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- contact
- moving
- fixed contact
- fixed
- switch
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Abstract
The utility model proposes a kind of contact switch, comprise moving contact and fixed contact, described fixed contact is concave structure, and moving contact is convex shape.The groove of described fixed contact concave structure is conical surface groove, the projection of moving contact convex shape is tapered protrusion, the cone angle of described conical surface groove is less than the cone angle of tapered protrusion, moving contact and fixed contact in conjunction with time, the contact of moving contact and fixed contact is circumferential line contact, noncontact chamber is formed, as the memory space of pitting of contact oxide with upper/lower positions at the contact circumference of fixed contact.This contact switch operationally, dynamic and static contact, for circumferencial direction linearly contacts cooperation, contact area is large, the boss edge of moving contact can be relied on pitting of contact oxide layer to be peeled off simultaneously, ablation oxide is removed in the matrix noncontact chamber of fixed contact, thus improves reliability of contact.
Description
Technical field
The utility model belongs to electric signal switch parts, is specifically related to a kind of contact switch.
Background technology
Automobile electrical signal switch conventional is at present contact switch, comprises moving contact and fixed contact.General dynamic and static contact structure is that cambered surface coordinates with plane, belongs to point cantact.When high-current switch is connected, as braking light switch, operating current is 5A, impulse current reaches 30A, when switch contact is unstable, can produces electric spark and carry out ablation oxidation to contact surface between sound contact, the long-time carbon distribution using formation black, causes switch failure.See Fig. 1, the moving contact 1 of this switch is cambered surface, and fixed contact 2 is plane, and when not working, moving contact 1 separates with fixed contact 2.See Fig. 2, during switch, moving contact 1 contacts with fixed contact 2, contacts as point cantact, and contact conduction work area is little, and deposition and surface after pitting of contact, switch easily lost efficacy.
Summary of the invention
The utility model is a kind of contact switch, and this structure makes contact area increase, and automatically can remove the carbon distribution on switch contact, improves the useful life of switch.
The technical solution of the utility model is as follows:
a kind ofcontact switch, comprises moving contact and fixed contact, and described fixed contact is concave structure, and moving contact is convex shape.The groove of described fixed contact concave structure is conical surface groove, the projection of moving contact convex shape is tapered protrusion, the cone angle of described conical surface groove is less than the cone angle of tapered protrusion, moving contact and fixed contact in conjunction with time, the contact of moving contact and fixed contact is circumferential line contact, noncontact chamber is formed, as the memory space of pitting of contact oxide with upper/lower positions at the contact circumference of fixed contact.
This contact switch operationally, dynamic and static contact, for circumferencial direction linearly contacts cooperation, contact area is large, because the tapering of contact point concave, convex structure is different, when contact surface has ablation oxide, moving contact is when moving to contact position, the ablation oxide layer of two contacts can be peeled off by the conical surface lower edge of moving contact, ablation oxide is removed in the matrix noncontact chamber of fixed contact, reliability of contact as the memory space of pitting of contact oxide, thus can be improved in noncontact chamber.
Visible, the utility model can improve switch contact contact area, increases contact current conducting area, reduces ablation probability; Contact structure can carry out self-cleaning effect to pitting of contact oxide, can switch life be improved.
Accompanying drawing explanation
Fig. 1 is background technology structural representation.
Fig. 2 is background technology switch contact operating diagram.
Fig. 3 is the utility model contact switch structure diagram.
Fig. 4 is the utility model contact switch schematic diagram.
In figure, 1-moving contact, 2-fixed contact, 3-convex shape moving contact, 4-concave structure fixed contact.
Embodiment
Structure of the present utility model is further illustrated below in conjunction with accompanying drawing:
See Fig. 3, fixed contact is designed to concave structure by the utility model, and moving contact is designed to convex shape, and axial motion break-make works.The groove of concave structure fixed contact 4 is conical surface groove, and the projection of convex shape moving contact 3 is tapered protrusion, and the angle of conical surface groove is a bit larger tham the angle of the tapered protrusion of moving contact, and during inoperative, two contacts separately.
See Fig. 4, during switch, fixed contact is motionless, and moving contact moves to as Fig. 4 position, and moving contact conical surface lower edge and fixed contact matrix taper-face contact, contact-making surface is circumferential line contact.When contact surface has ablation oxide, moving contact is when moving to contact position, the conical surface lower edge of moving contact, the ablation oxide of two contacts can be removed in the noncontact chamber of the bottom portion of groove of fixed contact, the noncontact chamber of fixed contact can as the memory space of pitting of contact oxide.
Claims (1)
1. a contact switch, comprises moving contact and fixed contact, and described fixed contact is concave structure, and moving contact is convex shape; It is characterized in that, the groove of described fixed contact concave structure is conical surface groove, the projection of moving contact convex shape is tapered protrusion, the cone angle of described conical surface groove is less than the cone angle of tapered protrusion, moving contact and fixed contact in conjunction with time, the contact of moving contact and fixed contact is circumferential line contact, forms noncontact chamber, as the memory space of pitting of contact oxide at the contact circumference of fixed contact with upper/lower positions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420781794.5U CN204242825U (en) | 2014-12-12 | 2014-12-12 | A kind of contact switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420781794.5U CN204242825U (en) | 2014-12-12 | 2014-12-12 | A kind of contact switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204242825U true CN204242825U (en) | 2015-04-01 |
Family
ID=52772287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420781794.5U Active CN204242825U (en) | 2014-12-12 | 2014-12-12 | A kind of contact switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204242825U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107359058A (en) * | 2017-05-12 | 2017-11-17 | 中科电力装备集团有限公司 | Disconnecting switch dynamic/static contact structure in a kind of transformer |
-
2014
- 2014-12-12 CN CN201420781794.5U patent/CN204242825U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107359058A (en) * | 2017-05-12 | 2017-11-17 | 中科电力装备集团有限公司 | Disconnecting switch dynamic/static contact structure in a kind of transformer |
| CN107359058B (en) * | 2017-05-12 | 2019-04-16 | 中科电力装备集团有限公司 | Disconnecting switch dynamic/static contact structure in a kind of transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |