CN201829419U - Moving contact device of relay - Google Patents
Moving contact device of relay Download PDFInfo
- Publication number
- CN201829419U CN201829419U CN 201020568462 CN201020568462U CN201829419U CN 201829419 U CN201829419 U CN 201829419U CN 201020568462 CN201020568462 CN 201020568462 CN 201020568462 U CN201020568462 U CN 201020568462U CN 201829419 U CN201829419 U CN 201829419U
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- CN
- China
- Prior art keywords
- moving contact
- contact body
- relay
- fulcrum
- ferrous metal
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- Expired - Lifetime
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Abstract
The utility model provides a moving contact device of a relay, which has the advantages of simple structure, low cost, high current bearing capacity and high working reliability, and is beneficial to parting large current and large separation. The moving contact device of the relay comprises a moving contact body which is of a strip laminated structure; the front end of the moving contact body is connected with a soft nonferrous metal wire; pivots are arranged between the middle part of the moving contact body and the back end of the moving contact body; moreover, a bearing structure which is driven by external force so as to drive the moving contact body to rotate along the pivots of the moving contact body is arranged at the front parts or the back parts of the pivots.
Description
Technical field
The utility model relates to a kind of trigger device, and especially a kind of trigger device that is used for relay belongs to electric field.
Technical background
Relay plays automatic connection and cutting action to circuit, at present, the trigger device of single-break relay generally comprises moving contact terminal, movable contact spring and moving contact, wherein movable contact spring and moving contact are riveted or are welded together, moving contact terminal and movable contact spring are in riveted joint of the termination of moving contact terminal or welding, this tie point becomes the fulcrum of movable contact spring motion, realizes switching on and off of circuit around this fulcrum rotation when movable contact spring is stressed.
Movable contact spring is generally the resilient sheet-like structure, during circuit turn-on as electrical current carriers.When the circuit of magnetic latching relay was connected, electric current flowed to movable contact spring, moving contact terminal by fixed contact.Relay inner space size has limited the size of opening distance between the current-carrying sectional area of movable contact spring and dynamic and static contact.The size of opening distance between the at present general dynamic and static contact of electromagnetic relay only can satisfy the requirement of national standard category-A (nominal insulation voltage between 250V and 380V time), and promptly electric clearance is about 1.5mm.This causes the current carrying capacity of movable contact spring low on the one hand, can not satisfy the requirement that safety is isolated simultaneously.As the current carrying capacity and the safe isolating power of need raising relay, then can cause the relay overall volume to strengthen, limited the scope of application of relay.
Simultaneously, movable contact spring and fixed contact are electrical current carriers, the current direction of fixed contact and movable contact spring is generally oppositely during circuit turn-on, therefore between fixed contact and movable contact spring, there is the magnetic field of repelling mutually, impel dynamic and static contact to separate fast, but because relay self does not possess the arc extinguishing ability, therefore when the big electric current of disjunction, easily cause dynamic and static contact burning, reduce the reliability of contact work.
The utility model content
To be solved in the utility model be present relay exist current carrying capacity low, be unfavorable for the big electric current of disjunction, do not possess safe isolating power, the problem that functional reliability is low, aim to provide a kind of simple in structure, cost is low, current carrying capacity is high, be beneficial to the big electric current of disjunction, large opening, relay trigger device that functional reliability is high.
For this reason, the utility model is by the following technical solutions:
A kind of trigger device of relay comprises the moving contact body, it is characterized in that:
Described moving contact body is rectangular laminated structure;
The front end of described moving contact body is connected with the non-ferrous metal flexible cord;
The middle part of described moving contact body is provided with fulcrum between the rear end of moving contact body;
Front portion or rear portion at described fulcrum are provided with the force structure that supplies external force to order about and the moving contact body is rotated around this fulcrum.
Further:
The fulcrum of described moving contact body is one of structure of projection, pit, hole, local grooved band through hole.
The front portion of described fulcrum or the force structure at rear portion are one of arris, groove, projection, pit, hole, L type, T type, cross structure of surface, the moving contact body of moving contact body.
The other end of described non-ferrous metal flexible cord is connected with the rear end of moving contact body.
The other end of described non-ferrous metal flexible cord connects binding post.
The front end of described moving contact body connects the conductive contact that resistivity is lower than the moving contact body, and the non-ferrous metal flexible cord is connected with this conductive contact.
The utlity model has following advantage:
1. owing to adopt the main carrier of non-ferrous metal flexible cord as electric current, can under the prerequisite that does not increase volume, raises the cost, effectively improve the current carrying capacity of relay, substitute the relay of corresponding large volume, expensive, little load with small size, low cost, heavy load relay, can obtain better economic benefit.
2. because moving contact body self loaded current not, therefore there is not magnetic field between dynamic and static contact, and then there is not the power of mutual repulsion, add because non-ferrous metal flexible cord self material characteristics, can define the current direction and the length of non-ferrous metal flexible cord according to actual needs, thereby help the big electric current of contact disjunction, can improve the reliability of contact apparatus work;
3. moving contact body fulcrum is local grooved through-hole structure, is rotated by cooperating with the fixing axle of relay housing, is easy to realize large opening, can satisfy the requirement of safety isolation.
Description of drawings
Fig. 1 is the trigger device structural representation.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in detail.
The trigger device primary structure that the utility model provides comprises moving contact body 1, non-ferrous metal flexible cord 2 and terminal 3.As shown in Figure 1, wherein moving contact body 1 is a flake conductive material, and its front end is connected with non-ferrous metal flexible cord 2 by the mode of welding.
The material that the moving contact body adopts is a red copper, and also available other materials is as iron.When adopting other materials, need to connect the conductive contact that resistivity is lower than the moving contact body this moment on the moving contact body, non-ferrous metal flexible cord 2 is connected with the mode of this conductive contact by riveted joint or welding.The other end of non-ferrous metal flexible cord 2 is connected with binding post 3, also can be connected with moving contact body rear end.As long as make the non-ferrous metal flexible cord become the main carrier of electric current.
In the above structure, when the non-ferrous metal flexible cord was connected with moving contact body rear end, the non-ferrous metal flexible cord was the main carrier of electric current, and the moving contact body is less important carrier; When the non-ferrous metal flexible cord was connected with binding post, the non-ferrous metal flexible cord was an electrical current carriers, and moving contact body self is loaded current not.The non-ferrous metal flexible cord is easier to increase the current-carrying sectional area for the moving contact body, therefore can under the prerequisite that does not increase volume, raises the cost, effectively improve the current carrying capacity of relay, can on the relay of small size, promote load capacity, substitute the relay of corresponding large volume, expensive, little load with small size, low cost, heavy load relay, and then obtain better economic benefit.
Simultaneously, the non-ferrous metal flexible cord is as electrical current carriers, its current direction and length can be determined according to actual needs, as for the ability that improves the big electric current of relay contact device disjunction and the reliability of contact work, the current direction of non-ferrous metal flexible cord and the current direction of fixed contact can be set in the same way.Like this, there is the power that attracts each other between fixed contact and the non-ferrous metal flexible cord, when the big electric current of disjunction, can delays dynamic and static contact and separate, help the big electric current of disjunction, avoid causing contact burning, improve the reliability of contact apparatus work owing to producing electric arc.
Have the through hole 4 of a pair of local trench structure between the middle part of moving contact body 1 to the rear end, this rotating shaft that local grooved through hole axle cooperates and the relay housing is fixing is as the pivot point of moving contact body, the moving contact body can rotate around this fulcrum, thereby realizes switching on and off of trigger device.Simultaneously,, be easy to realize the large opening of 4mm, satisfy the requirement that safety is isolated because the moving contact body is not the main carrier of electric current.Determine moving contact body, fixed contact contact site distance according to actual needs apart from moving contact body fulcrum, just can realize large opening, satisfy the requirement (nominal insulation voltage between 250V and 380V time) of national standard C class relay electric clearance, promptly electric clearance is 4mm.
The fulcrum of moving contact body also can be the structure in local crowning or pit or hole, as long as play the effect of pivot point.
In addition, can be under the effect of external force rotate, realize that circuit is switched on or switched off around its fulcrum for making the moving contact body, in the front portion of the fulcrum of moving contact body or the rear portion be provided with for external force and order about and make the force structure of moving contact body around this fulcrum rotation.Force application apparatus and moving contact body can be that face contacts or the line contact, and the moving contact body can cooperate with force application apparatus by the force structure that projection, pit, hole, L type, T type or form such as cross are set on body.
What need statement is; the foregoing description only is used for the utility model is described but not the utility model is limited; therefore; for a person skilled in the art; under the situation that does not deviate from the utility model spirit and scope, it is carried out various conspicuous changes, all should be within protection range of the present utility model.
Claims (6)
1. the trigger device of a relay comprises the moving contact body, it is characterized in that:
Described moving contact body is rectangular laminated structure;
The front end of described moving contact body is connected with the non-ferrous metal flexible cord;
The middle part of described moving contact body is provided with fulcrum between the rear end of moving contact body;
Front portion or rear portion at described fulcrum are provided with the force structure that supplies external force to order about and the moving contact body is rotated around this fulcrum.
2. the trigger device of relay as claimed in claim 1 is characterized in that:
The fulcrum of described moving contact body is one of structure of projection, pit, hole, local grooved band through hole.
3. the trigger device of relay as claimed in claim 1 or 2 is characterized in that:
The front portion of described fulcrum or the force structure at rear portion are one of arris, groove, projection, pit, hole, L type, T type, cross structure of surface, the moving contact body of moving contact body.
4. the trigger device of relay as claimed in claim 1 is characterized in that:
The other end of described non-ferrous metal flexible cord is connected with the rear end of moving contact body.
5. the trigger device of relay as claimed in claim 1 is characterized in that:
The other end of described non-ferrous metal flexible cord connects binding post.
6. the trigger device of relay as claimed in claim 1 is characterized in that:
The front end of described moving contact body connects the conductive contact that resistivity is lower than the moving contact body, and the non-ferrous metal flexible cord is connected with this conductive contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020568462 CN201829419U (en) | 2010-10-03 | 2010-10-03 | Moving contact device of relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020568462 CN201829419U (en) | 2010-10-03 | 2010-10-03 | Moving contact device of relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201829419U true CN201829419U (en) | 2011-05-11 |
Family
ID=43967939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020568462 Expired - Lifetime CN201829419U (en) | 2010-10-03 | 2010-10-03 | Moving contact device of relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201829419U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102446660A (en) * | 2010-10-03 | 2012-05-09 | 北京人民电器厂有限公司 | Moving contact device of relay |
| CN102800530A (en) * | 2011-05-23 | 2012-11-28 | 北京人民电器厂有限公司 | Moving contact device of contactor |
| WO2014205685A1 (en) * | 2013-06-26 | 2014-12-31 | Abb Oy | Contact system for cam switch and a cam switch including the same |
-
2010
- 2010-10-03 CN CN 201020568462 patent/CN201829419U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102446660A (en) * | 2010-10-03 | 2012-05-09 | 北京人民电器厂有限公司 | Moving contact device of relay |
| CN102800530A (en) * | 2011-05-23 | 2012-11-28 | 北京人民电器厂有限公司 | Moving contact device of contactor |
| WO2014205685A1 (en) * | 2013-06-26 | 2014-12-31 | Abb Oy | Contact system for cam switch and a cam switch including the same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110511 |
|
| CX01 | Expiry of patent term |