CN206921771U - A kind of flexible bridge-type contact - Google Patents
A kind of flexible bridge-type contact Download PDFInfo
- Publication number
- CN206921771U CN206921771U CN201720243396.1U CN201720243396U CN206921771U CN 206921771 U CN206921771 U CN 206921771U CN 201720243396 U CN201720243396 U CN 201720243396U CN 206921771 U CN206921771 U CN 206921771U
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- China
- Prior art keywords
- bridge
- type contact
- contact
- drawer chassis
- busbar
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Abstract
The utility model discloses a kind of flexible bridge-type contact, including drawer chassis busbar, bridge-type contact and body slotting tool, the connection end of the drawer chassis busbar is provided with spherical fulcrum, the bridge-type contact is made up of two row's contact chips pull bar connection, spring leaf is provided between the both ends of the pull bar and the outer face of contact chip, bridge-type contact one end is internally formed the accommodation space being engaged with spherical fulcrum, the bridge-type contact other end is internally formed the accommodation space being engaged with body slotting tool, the electric conductor that is flexible coupling is provided between the contact chip and drawer chassis busbar of the bridge-type contact.The electric conductor that is flexible coupling is provided between bridge-type contact and drawer chassis busbar, contact resistance so from bridge-type contact part exists only in bridge-type contact, body slotting tool busbar and is flexible coupling between electric conductor, under same clamping force effect, the contact chip of bridge-type contact contacts more abundant with the drawer chassis busbar of breaker, then corresponding caloric value then reduces a lot.
Description
Technical field：
A kind of breaker busbar connected mode is the utility model is related to, belongs to the technical field of low-voltage electrical apparatus.
Background technology：
With the continuous improvement of net capacity and the continuous development of low-voltage electrical apparatus, miniaturization, intelligence to omnipotent breaker
Energyization requires also more and more higher, and core and key technology therein are exactly to reduce temperature rise.The temperature of metal carrying object exceedes a certain
After limiting value, mechanical strength substantially reduces, and gently then deforms, and influences the normal work of electrical equipment, heavy then damage electrical equipment, so that shadow
The work of system where ringing it.In addition temperature rise is too high can aggravate to make electrical contact with connection surface and some gas in its ambient atmosphere in electrical equipment
The chemical reaction of body, make to generate oxide-film on contact surface so as to increase contact resistance, so as to cause further to make contact surface temperature
Rise, form vicious circle.When the major loop of universal circuit breaker body and drawer chassis realizes circuit connection, on the one hand to meet temperature
Regulation is risen, on the other hand to ensure that contact is reliable.All exist between drawer chassis outlet row between bridge-type contact and body busbar
Contact resistance, and contact resistance is also the part heating source in whole breaker galvanic circle.It is common on the market at present
Bridge-type contact structure, the comparison leaned between piece and piece is tight, does not lubricate between each other, there is friction each other, former plus assembling
Cause, it is possible to make contact chip motion not smooth, it is insufficient contact with body busbar, it can so aggravate temperature rise rise.Contact resistance passes through
Test formula：
Rj=Kj/ (0.102F) m
Wherein, it is contact resistance (μ Ω)；
The relevant coefficient such as Kj and contact material, the situation on surface, the way of contact；
M is the coefficient relevant with contact form, and effective contact surface is bigger, and the value is bigger；
F is contact pressure (N).
It is larger generally for the pressure between universal circuit breaker bridge-type contact and busbar.From above formula, in contact
Necessarily, in the case of conductive material is known, contact surface is small, contact resistance increase, the caloric value increase thus brought, temperature rise liter
It is high.Temperature rise is also an index of the comparison that client compares breaker concern, in circuit breaker development process, if logical
The contact resistance for improving the attachment structure between existing bridge-type contact and busbar come between reducing is crossed, reduces galvanic circle temperature
Rise and can simultaneously and improve product reliability, this measure will seem significant.
The content of the invention：
Technical problem to be solved in the utility model is：A kind of elimination contact resistance is provided and reduces the flexible bridge of temperature rise
The mounting means of type contact.
In order to solve the above-mentioned technical problem, the utility model is achieved through the following technical solutions：A kind of flexible bridge type
Contact, including drawer chassis busbar, bridge-type contact and body slotting tool, the connection end of the drawer chassis busbar are provided with spherical fulcrum,
The bridge-type contact is made up of two row's contact chips pull bar connection, is set between the both ends of the pull bar and the outer face of contact chip
It is equipped with spring leaf, bridge-type contact one end is internally formed the accommodation space being engaged with spherical fulcrum, inside the bridge-type contact other end
The accommodation space being engaged with body slotting tool is formed, soft company is provided between the contact chip and drawer chassis busbar of the bridge-type contact
Connect electric conductor.
Preferably, offering the first welding groove on the drawer chassis busbar, set on the contact chip of the bridge-type contact
Second welding groove, the electric conductor that is flexible coupling are arranged in the first welding groove and the second welding groove by way of welding.
Preferably, the welding manner being flexible coupling between electric conductor and the first welding groove and the second welding groove is using electricity
Welding resistance.
Compared with prior art, usefulness of the present utility model is：The utility model is female in bridge-type contact and drawer chassis
The electric conductor that is flexible coupling is provided between row, will be flexible coupling electric conductor by way of rivet hot or resistance welding with bridge-type contact,
Drawer chassis busbar carries out integral type connection, then contact resistance is there will be no between bridge-type contact and drawer chassis busbar, so
The contact resistance for coming from bridge-type contact part exists only in bridge-type contact, body slotting tool busbar and is flexible coupling between electric conductor.Separately
The outer electric conductor that is flexible coupling has used flexible wire, and bridge-type contact contact chip transverse movement is more smooth and flexible, in same folder
Under clamp force effect, the contact chip of bridge-type contact contacts more abundant, the abundant then contact resistance of contact with the drawer chassis busbar of breaker
It will reduce, then corresponding caloric value then reduces a lot.
Brief description of the drawings：
The utility model is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is positive structure schematic of the present utility model.
In figure：1st, drawer chassis busbar；11st, spherical fulcrum；2nd, bridge-type contact；3rd, body slotting tool；4th, be flexible coupling electric conductor.
Embodiment：
Below in conjunction with the accompanying drawings and the utility model is described in detail embodiment：
A kind of flexible bridge-type contact as shown in Figure 1, including drawer chassis busbar 1, bridge-type contact 2 and body slotting tool 3, it is described
The connection end of drawer chassis busbar 1 is provided with spherical fulcrum 11, and the bridge-type contact 2 connects group by two row's contact chips by pull bar
Into being provided with spring leaf between the both ends of the pull bar and the outer face of contact chip, spring leaf, which plays, compresses two row's contact chips
Effect, and then make it that drawer chassis busbar 1, the contact with bridge-type contact 2 of body slotting tool 3 are relatively reliable, inside the one end of bridge-type contact 2
The accommodation space being engaged with spherical fulcrum 11 is formed, the other end of bridge-type contact 2 is internally formed the appearance being engaged with body slotting tool 3
Between being empty, the electric conductor 4 that is flexible coupling is provided between the contact chip and drawer chassis busbar 1 of the bridge-type contact 2.
The first welding groove is offered on the drawer chassis busbar 1, the second welding is set on the contact chip of the bridge-type contact 2
Groove, the electric conductor 4 that is flexible coupling is arranged in the first welding groove and the second welding groove by way of welding, so, soft
Connection electric conductor 4 be connected with drawer chassis busbar 1 and bridge-type contact 2 it is relatively reliable, while contact area increase, advantageously reduce temperature
Rise.
The welding manner being flexible coupling between the welding groove of electric conductor 4 and first and the second welding groove uses electric resistance welding, electricity
Welding resistance is to apply pressure by electrode after workpiece combines, and passes through resistance caused by the contact surface and adjacent domain of joint using electric current
The method that heat is welded, resistance is not in contact between bridge-type contact 2 and drawer chassis busbar 1, also come without welded bands extra
Resistance, therefore reduce heat and produce, it can play a part of reducing temperature rise.
It is emphasized that：It the above is only preferred embodiment of the present utility model, not the utility model appointed
What formal limitation, every any simple modification made according to the technical essence of the utility model to above example, etc.
With change and modification, in the range of still falling within technical solutions of the utility model.
Claims (3)
- A kind of 1. flexible bridge-type contact, it is characterised in that：Including drawer chassis busbar（1）, bridge-type contact（2）With body slotting tool（3）, The drawer chassis busbar（1）Connection end be provided with spherical fulcrum（11）, the bridge-type contact（2）Pass through drawing by two row's contact chips Bar connection composition, is provided with spring leaf, bridge-type contact between the both ends of the pull bar and the outer face of contact chip（2）Inside one end Formed and spherical fulcrum（11）The accommodation space being engaged, bridge-type contact（2）The other end is internally formed and body slotting tool（3）Match The accommodation space of conjunction, the bridge-type contact（2）Contact chip and drawer chassis busbar（1）Between be provided with the electric conductor that is flexible coupling（4）.
- 2. flexible bridge-type contact according to claim 1, it is characterised in that：The drawer chassis busbar（1）On offer One welding groove, the bridge-type contact（2）Contact chip on the second welding groove, the electric conductor that is flexible coupling are set（4）Pass through welding Mode be arranged on the first welding groove and the second welding groove in.
- 3. flexible bridge-type contact according to claim 2, it is characterised in that：The electric conductor that is flexible coupling（4）With the first weldering Welding manner between access slot and the second welding groove uses electric resistance welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720243396.1U CN206921771U (en) | 2017-03-14 | 2017-03-14 | A kind of flexible bridge-type contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720243396.1U CN206921771U (en) | 2017-03-14 | 2017-03-14 | A kind of flexible bridge-type contact |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206921771U true CN206921771U (en) | 2018-01-23 |
Family
ID=61310429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720243396.1U Active CN206921771U (en) | 2017-03-14 | 2017-03-14 | A kind of flexible bridge-type contact |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206921771U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111211020A (en) * | 2018-11-21 | 2020-05-29 | Ls产电株式会社 | Contact assembly for distribution board |
-
2017
- 2017-03-14 CN CN201720243396.1U patent/CN206921771U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111211020A (en) * | 2018-11-21 | 2020-05-29 | Ls产电株式会社 | Contact assembly for distribution board |
| CN111211020B (en) * | 2018-11-21 | 2022-10-25 | Ls产电株式会社 | Contact assembly for distribution board |
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