CN202678262U - Bridge contact structure for breaker - Google Patents
Bridge contact structure for breaker Download PDFInfo
- Publication number
- CN202678262U CN202678262U CN 201220323034 CN201220323034U CN202678262U CN 202678262 U CN202678262 U CN 202678262U CN 201220323034 CN201220323034 CN 201220323034 CN 201220323034 U CN201220323034 U CN 201220323034U CN 202678262 U CN202678262 U CN 202678262U
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- contact
- bus
- bridge
- arcwall face
- arc sections
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Abstract
The utility model provides a bridge contact structure for a breaker, comprising a first bus, a second bus and a bridge contact, wherein the bridge contact comprises a contact unit, the end portion of the second bus is provided with a second arc surface, the contact unit comprises a conductive sheet, a contact and a first elastic member, the contact comprises a first arc portion and a second arc portion, when the second bus is inserted into the bridge contact the second arc surface of the second bus mutually coincides with the second arc portion of the contact to form surface contact, and a current is conducted between the first bus and the second bus through the bridge contact. The bridge contact structure for a breaker converts the line contact between the contact and the conductive sheet as well as between the contact and the second bus into surface contact, thereby greatly increasing contact reliability, and reducing contact resistance and temperature rise. Simultaneously, the bridge contact structure for breaker can save material consumption, and is simple in machining and convenient in mounting, thereby greatly reducing production cost and increasing production efficiency.
Description
Technical field
The utility model belongs to field of circuit breakers, is specifically related to a kind of bridge-shaped contact of breaker structure.
Background technology
In the low pressure electrical power trans mission/distribution system, electric energy from the high-pressure side input transformer by the secondary side of transformer to busbar, again toward each Low-voltage circuit breaker, to each branch circuit breaker, until terminate load.Electric energy is in this flow process, and each system all will consume electric energy, and namely the thermal effect of generation current is also referred to as temperature-rise effect.And transformer, low-voltage circuit breaker are first of the main power consumption.
The fault of many equipment all is to be caused by overheating.During normal operation, the electrical equipment galvanic circle is changed heat energy into by the energy loss that operating current produces for a long time, the appliance material temperature is raise, generally can not exceed the standard code scope, but when in a single day the galvanic circle comes in contact unreliable (contact resistance is higher than the normal value of permission), the appliance material temperature is raise exceed prescribed limit, make the mechanical strength of appliance material, physical property descends, temperature raises and also can aggravate to electrically contact in the electrical equipment chemical reaction between some gas in connecting surface and its ambient atmosphere, make and generate oxide-film and other retes on the contact-making surface, increase contact resistance, because the contact-making surface during Metal Contact is also unclean, the place of current flowing may be subject to the thin oxide layer of metal surface, the impact of sulfide and other inorganic matter films, thereby the contact-making surface temperature is raise again, form vicious circle.
Bridge-shaped contact is a vitals of withdrawable circuit breaker, and it is the important pivot that electric conductor motion parts (breaker body) and stationary part (drawout chassis) are coupled together.The temperature rise that the contact resistance size of bridge-shaped contact and contact reliability produce during on the circuit breaker long-term work has great impact.But the contact in the prior art in the bridge-shaped contact and conducting strip are one, but all are that line contacts between contact and the second bus, and the correction adjustable range is little, and its contact reliability is not high, and contact resistance is large, thereby so that the circuit breaker temperature rise is larger.
The utility model content
The utility model is for above-mentioned the deficiencies in the prior art, provides a kind of and can promote contact reliability, reduces contact resistance, reduced the bridge-shaped contact of breaker structure of temperature rise.
The utility model is achieved by the following technical solution:
A kind of bridge-shaped contact of breaker structure comprises the first bus, the second bus and bridge-shaped contact; Described bridge-shaped contact comprises the contact unit that two groups of structures are identical, be oppositely arranged; Bridge-shaped contact is connected on the first bus;
It is characterized in that, be provided with the support that both are separated between two groups of contact units;
The end of described the second bus is provided with the second arcwall face, and described contact unit comprises conducting strip, contact and the first flexible member; Be provided with the first arcwall face on the medial end of conducting strip; Described contact comprises the first arc sections and the second arc sections, and the first arc sections is used for coincideing with the first arcwall face of conducting strip, and the second arc sections is used for coincideing with the second arcwall face of the second bus; The first arc sections of contact and the first arcwall face of conducting strip mutually coincide contact and conducting strip are connected together; The first flexible member acts on the conducting strip, and being used for provides the bridge-shaped contact conductive contact required pressure;
When the second bus inserted bridge-shaped contact, the second arcwall face of the second bus contacted with the second arc sections formation face that mutually coincide of contact in the contact unit, and the first bus and the second bus are by the bridge-shaped contact On current.
Further setting of the present utility model is, the first arcwall face and the second arcwall face are the arcwall face that caves inward, and the first arc sections and the second arc sections are outwardly arc sections.
Further setting of the present utility model is, the first arcwall face and the second arcwall face are outwardly arcwall face, and the first arc sections and the second arc sections are the arc sections that caves inward.
Further setting of the present utility model is, the afterbody of described the second arcwall face is provided with a step that protrudes to the second arcwall face center of circle direction.
Further setting of the present utility model is, described contact unit also comprises the second flexible member, and the second flexible member acts on the contact, is used to contact that reset response power is provided.
Further setting of the present utility model is, is provided with an arc surface on the described conducting strip, and the end of the first bus is provided with a round recessed, and the round recessed of the arc surface on the conducting strip and the first bus mutually coincide and forms rotatable and contact.
Further setting of the present utility model is, the first arc sections of contact and the center of circle of the second arc sections do not overlap.
Bridge-shaped contact of breaker structure described in the utility model on the basis of existing technology, structure to bridge-shaped contact and the second bus is all improved, contact and conducting strip, contact contacted with line between the second bus be improved to the face contact, be that face between first arcwall face of the first arc sections and conducting strip of contact contacts, and the face between the second arc sections of contact contact in two the second arcwall faces of the second bus and the contact unit; Thereby greatly promoted contact reliability, reduced contact resistance, reduced temperature rise.Bridge-shaped contact of breaker structure described in the utility model can also be saved consumable quantity simultaneously, and its processing is simple, easy for installation, can greatly reduce production costs, and enhances productivity.
Description of drawings
Fig. 1 is the three-dimensional structure diagram that the bridge-shaped contact of breaker conduction connects;
Fig. 2 is the three-dimensional structure diagram of the first embodiment of contact unit;
Fig. 3 is the three-dimensional structure diagram of the second bus;
Fig. 4 is the three-dimensional structure diagram of the first bus.
Fig. 5 is the three-dimensional structure diagram of bridge-shaped contact the second embodiment;
Fig. 6 is the three-dimensional structure diagram of contact unit the second embodiment.
Embodiment
The utility model is described in more detail below in conjunction with the drawings and specific embodiments.
Described contact cooperation in the utility model is not subjected to structural limitations, and namely arc surface cooperates with round recessed and can exchange; The present embodiment only is the arcwall face that caves inward with the first arcwall face and the second arcwall face, and it is that example describes that the first arc sections and the second arc sections are outwardly arc sections.
Shown in Fig. 1-4, the utility model provides a kind of bridge-shaped contact of breaker structure, comprises the first bus 1, the second bus 2 and bridge-shaped contact 3, and bridge-shaped contact 3 is connected on the first bus 1; During real work, the second bus 2 moves to bridge-shaped contact 3 directions, and when the second bus 2 inserted between the bridge-shaped contact 3, the first bus 1 and the second bus 2 were by bridge-shaped contact 3 On currents.
Bridge-shaped contact 3 described in the utility model comprises the contact unit that two groups of structures are identical, be oppositely arranged; Be provided with the support that both are separated between two groups of contact units, described support can be divided into the first support 4 and the second support 5 two parts, and the first support 4 is arranged between two groups of contact units, and the second support 5 is arranged on the periphery of two groups of contact units; Be provided with an inserting groove 6, the first supports 4 on two sidewalls of the second support 5 and insert in the described inserting groove 6, link together with the second support 5.The afterbody that the both sides, one end of the second bus 2 are provided with the second arcwall face 7, the second arcwall faces 7 can also arrange the step 8 that protrudes to the second arcwall face center of circle direction, and step 8 is higher than the lowest part of the second arcwall face 7 of the second bus 2.Contact unit comprises conducting strip 9, contact 10 and the first flexible member, is provided with the first arcwall face 13 on the inner side end of conducting strip 9; Described contact 10 comprises that the first arc sections 14 and the second arc sections 15, the first arc sections 14 are used for coincideing with the first arcwall face 13 of conducting strip 9, and the second arc sections 15 is used for coincideing with second arcwall face 7 of the second bus 2.Preferably, the center of circle of the first arc sections 14 and the second arc sections 15 does not overlap, and both do not overlap in the center of circle, and the stroke that increases contact 10 and the second bus 2 can freely be set, and makes contact 10 can both keep reliable the contact with the second bus 2 in than great error range.The first arc sections 14 of contact 10 is coincide mutually with the first arcwall face 13 of conducting strip 9, consists of the face contact connection that a pair of Rotatable circular cambered surface is coincide.When the second bus 2 inserted bridge-shaped contact, the second arc sections 15 of contact 10 was coincide mutually in two the second arcwall faces 7 of the second bus 2 and two contact units, consists of separable and contacts connection; The first bus 1 and the second bus 2 are by the bridge-shaped contact On current.
The first flexible member acts on the conducting strip 9, and being used for provides the bridge-shaped contact conductive contact required pressure; Preferably, the first flexible member is stage clip 11, stage clip 11 is arranged between the second support 5 and the conducting strip 9, stage clip 11 can be a flat spring, because flat spring is the spring of being made by monolithic or multi-disc sheet material, adopt flat spring as stage clip, can increase the adjustable range of conducting strip, conducting strip is contacted better with the first bus with contact, the second bus.Its mounting means is: be provided with a draw-in groove that caves inward 18 on the outboard end of conducting strip 9, the two ends of described flat spring are connected in the draw-in groove 18, and the flat spring side direction is compressed by the second support 5.So arrange, can make flat spring that conducting strip is produced initial pressure, be convenient to install.Certainly the stage clip 11 described in the utility model is not limited to and adopts flat spring to realize, can also adopt the spring of other types.
For contact 10 can be automatically reset, described contact unit also comprises the second flexible member, and the second flexible member acts on the contact 10, is used to contact 10 that reset response power is provided.Preferably, the second flexible member is supporting spring 12; Supporting spring 12 is arranged between conducting strip 9 and the contact 10, for contact 10 provides to the thrust of the second bus 2 sideway swivels.The preferred mounting means of supporting spring 12 is: be provided with a mounting groove 16 on the conducting strip 9, be provided with a protuberance 17 on the contact 10, supporting spring 12 is installed in the mounting groove 16, an end and conducting strip 9 butts, protuberance 17 butts of the other end and contact 10.So arrange, can make the installation of supporting spring easier, contact 10 is automatically reset.When the second arc sections 15 of contact 10 rigidly connects tactile step 8, because resistance is larger, contact 10 is rotation backward, when the second bus 2 moved on, the second arc sections 15 of contact 10 slided at step 8, until the second arc sections 15 is when leaving step 8, resistance reduces suddenly, because be subjected to the effect of the second flexible member, contact 10 can restPose, with the second arcwall face 7 identical contacts of the second bus 2.
Realization face contacts in order to make between conducting strip 9 and the first bus 1 also, be provided with an arc surface 20 on the described conducting strip 9, the end of the first bus 1 is provided with a round recessed 19, and the arc surface 20 on the conducting strip 9 and the round recessed 19 of the first bus 1 coincide mutually, consists of rotatable contact and connects.
Operation principle and the process of bridge-shaped contact of breaker structure described in the utility model are as follows:
When the second bus 2 has just inserted bridge-shaped contact, because the step 8 on the second bus 2 is higher than the second arcwall face 7 lowest parts of the second bus 2, the second bus 2 makes contact 10 do relative motion, this moment, stage clip 11 can produce one to the downward pressure of contact 10, make contact 10 and the second bus 2 contact-making surfaces produce frictional force, 12 pairs of contacts of supporting spring 10 produce outside thrust simultaneously; If the resistance of contact 10 is during greater than thrust, contact 10 can produce to internal rotating, increases the contact excess of stroke, the second bus 2 continues motion, when step 8 was crossed contact 10 minimum point, the earth pressure release of stage clip 11, contact 10 were understood second arcwall face 7 that rotatablely move forward with the second bus 2 and are fitted like a glove; When if contact 10 is not subjected to resistance or resistance less than thrust, it is motionless that contact 10 can keep.
Insertion along with the second bus 2, after the second arcwall face 7 hand hay cutters of the second bus 2 enter the second arc sections 15 identical contacts of contact 10, the continuation of the second bus 2 is inserted, contact 10 can rotate, the pressure of stage clip 11 can increase gradually, all can guarantee that contact 10 contacts with 2 of the second buses with conducting strip 9 this moment in certain distance, realized good reliably contact.
The first bus 1 of the utility model bridge-shaped contact of breaker structure and the second bus 2 positions can be exchanged.Be depicted as another embodiment of the present utility model such as Fig. 5,6, the structure chart of bridge-shaped contact after i.e. the first bus 1 and the second bus 2 positions exchange, the second flexible member among this embodiment, namely supporting spring 12 directly is installed on the contact 10, for contact 10 provides reset response power.Consistent with described in the embodiment one of other part-structures among this embodiment do not repeat them here.
The above is preferred embodiment of the present utility model, and all equivalent variations of doing according to the utility model claim all should belong to protection range of the present utility model.
Claims (7)
1. a bridge-shaped contact of breaker structure comprises the first bus, the second bus and bridge-shaped contact; Described bridge-shaped contact comprises the contact unit that two groups of structures are identical, be oppositely arranged; Bridge-shaped contact is connected on the first bus;
It is characterized in that, be provided with the support that both are separated between two groups of contact units;
The end of described the second bus is provided with the second arcwall face, and described contact unit comprises conducting strip, contact and the first flexible member; Be provided with the first arcwall face on the medial end of conducting strip; Described contact comprises the first arc sections and the second arc sections, and the first arc sections is used for coincideing with the first arcwall face of conducting strip, and the second arc sections is used for coincideing with the second arcwall face of the second bus; The first arc sections of contact and the first arcwall face of conducting strip mutually coincide contact and conducting strip are connected together; The first flexible member acts on the conducting strip, and being used for provides the bridge-shaped contact conductive contact required pressure;
When the second bus inserted bridge-shaped contact, the second arcwall face of the second bus contacted with the second arc sections formation face that mutually coincide of contact in the contact unit, and the first bus and the second bus are by the bridge-shaped contact On current.
2. bridge-shaped contact of breaker structure according to claim 1 is characterized in that, the first arcwall face and the second arcwall face are the arcwall face that caves inward, and the first arc sections and the second arc sections are outwardly arc sections.
3. bridge-shaped contact of breaker structure according to claim 1 is characterized in that, the first arcwall face and the second arcwall face are outwardly arcwall face, and the first arc sections and the second arc sections are the arc sections that caves inward.
4. bridge-shaped contact of breaker structure according to claim 2 is characterized in that, the afterbody of described the second arcwall face is provided with a step to the second arcwall face center of circle direction protrusion.
5. arbitrary described bridge-shaped contact of breaker structure is characterized in that according to claim 1-4, and described contact unit also comprises the second flexible member, and the second flexible member acts on the contact, is used to contact that reset response power is provided.
6. according to claim 2 or 3 described bridge-shaped contact of breaker structures, it is characterized in that, be provided with an arc surface on the described conducting strip, the end of the first bus is provided with a round recessed, and the round recessed of the arc surface on the conducting strip and the first bus mutually coincide and forms rotatable and contact.
7. bridge-shaped contact of breaker structure according to claim 1 is characterized in that, the first arc sections of contact and the center of circle of the second arc sections do not overlap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220323034 CN202678262U (en) | 2012-07-04 | 2012-07-04 | Bridge contact structure for breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220323034 CN202678262U (en) | 2012-07-04 | 2012-07-04 | Bridge contact structure for breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202678262U true CN202678262U (en) | 2013-01-16 |
Family
ID=47499146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220323034 Expired - Fee Related CN202678262U (en) | 2012-07-04 | 2012-07-04 | Bridge contact structure for breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202678262U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102820184A (en) * | 2012-07-04 | 2012-12-12 | 浙江福岛科技股份有限公司 | Bridge-shaped contact structure for breaker |
| CN112185779A (en) * | 2020-09-29 | 2021-01-05 | 德力西电气有限公司 | Circuit breaker bridge type contact and circuit breaker |
-
2012
- 2012-07-04 CN CN 201220323034 patent/CN202678262U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102820184A (en) * | 2012-07-04 | 2012-12-12 | 浙江福岛科技股份有限公司 | Bridge-shaped contact structure for breaker |
| CN112185779A (en) * | 2020-09-29 | 2021-01-05 | 德力西电气有限公司 | Circuit breaker bridge type contact and circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20140704 |
|
| EXPY | Termination of patent right or utility model |