CN101626147A - Electrical connection mechanism of plug-in breaker - Google Patents
Electrical connection mechanism of plug-in breaker Download PDFInfo
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- CN101626147A CN101626147A CN200810116235A CN200810116235A CN101626147A CN 101626147 A CN101626147 A CN 101626147A CN 200810116235 A CN200810116235 A CN 200810116235A CN 200810116235 A CN200810116235 A CN 200810116235A CN 101626147 A CN101626147 A CN 101626147A
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- contact chip
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- plug
- electrical connection
- contact pieces
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Abstract
The invention discloses an electrical connection mechanism of a plug-in breaker, which comprises left and right two sets of contact pieces and a bus fixed on an underframe of a drawer seat, wherein a plurality of horizontal plates are extended from the front end of the bus in the draw-out direction of a breaker body, and the horizontal plates are provided with two vertical round holes symmetric about the central axis of the bus; the outer sides of the contact pieces are provided with concave cavities and the middle parts of the inner sides of the contact pieces are provided with trapezoidal grooves; the plurality of pairs of contact pieces are hinged with the bus by pin shafts; the concave cavities arranged on the outer sides of the contact pieces accommodate spring pieces; and the plurality of pairs of contact pieces hinged with the bus are inserted into a rectangular frame, the upper and lower frames of the frame are vertically provided with shaft frame holes, one central shaft is inserted into the shaft frame holes of the frame and the trapezoidal grooves of the contact pieces; the two ends of the central shaft frame limit the rectangular frame through a limiting rod, and the left and right frames of the rectangular frame act on the spring pieces to tightly press the contact pieces on the central shaft frame. The scheme of the invention adopts a rotary structure and has the advantages of excellent electric conductivity, flexible adjustment, compact structure and flexible assembly.
Description
Technical field
The present invention relates to a kind of electrical connection mechanism that is used for plug in circuit breaker, particularly a kind of being used for, otherwise the electric connecting part that main circuit then disconnects for of the connection of plug in circuit breaker body bus with axial insertion realization main circuit.
Background technology
Existing drawout breaker electrical connection mechanism as shown in Figure 1, 2, comprises the bus 112 that is installed on the drawout chassis underframe, touches bridge 111 with bus 112 matches.Touch bridge 111 and comprise contact chip 101,102, axle 103, extension spring 104, rectangular frame 105,107.As shown in Figure 2, contact chip 101,102 has some, with a contact chip 101 and a contact chip 102 is one group, so be assembled into two rows of symmetry by some groups of stacks, nearly medium position place is formed with groove 108 in the outside of each contact chip 101,102, be provided with axle 103 in it, extension spring 104 is between contact chip 101,102, and two ends are separately fixed on the axle 103.Rectangular frame 105,107 is located at the centres of two row's contact chips, and rectangular frame 105 interts in the rectangular opening 106 of rectangular frame 107, rectangular frame 105, thus 107 be fixed together to form and touch bridge 111.Touching an end of bridge 111 like this, constitute the plug-in type chuck 114 of clamping breaker body bus 109 jointly by an end end that faces with each other on two row's contact chips, at the other end that touches bridge 111, constitute another fixed chuck 113 of clamping bus 112 jointly by the other end end that faces with each other on two row's contact chips.There is following defective in this drawout breaker with electrical connection mechanism: at first, owing to touch the face contact of bridge 111 in fixed chuck 113 employings, cause and touch when bridge 111 is installed on the bus 112 and can't freely swing, when breaker body bus 109 is inserted into the plug-in type chuck 114 that touches bridge 111, often owing to have certain deviation between breaker body bus 109 and the bus 112, this error may be because processing or assembling cause, thereby the resistance that causes breaker body bus 109 to be inserted into plug-in type chuck 114 increases, must to impose bigger thrust and just can overcome, therefore can increase the load of transmission mechanism relatively; In addition, touching bridge 111 and being connected of bus 112 and be the level board 110 that relies on bus bottom one side comes in addition spacing, when having error between breaker body bus 109 and the bus 112, breaker body bus 109 is inserted in plug-in type chuck 114 processes, can make and touch bridge 111 generation distortions, the face at fixed chuck 113 and plug-in type chuck 114 places of making contacts and becomes the line contact, line contact connected mode is in actual use because contact resistance is bigger, so the circuit breaker heating increases, loss increases.
No. 03112834.3 patent of invention of China " electric connecting mechanism for abstractable breaker " discloses a kind of electric connecting mechanism for abstractable breaker, and it comprises that the bus that is fixed on the drawout chassis reaches the bridge that touches that is connected with bus.Touch bridge and form fixed chuck and plug-in type chuck by some contact chips, along extracting out on the axis projection is arranged at bus, on upper and lower two faces of projection, arc groove is arranged respectively, this arc groove cooperates with fixed chuck formation, and realizes being electrically connected comparatively reliably by rectangular frame and spring leaf.But because when the breaker body bus with to touch bridge be not when alignment, can make the adjusted bridge that touches to form with the arc groove on the bus that is fixed on drawout chassis and cooperate, contact, increase the heating of circuit breaker but form a kind of line.
Summary of the invention
The purpose of this invention is to provide a kind of plug in circuit breaker electrical connection mechanism that is used for, this electrical connection mechanism has and conducts electricity very well, regulates freely, compact conformation, assembles advantage flexibly.
For finishing purpose of the present invention, the technical scheme that the present invention takes is:
A kind of electrical connection mechanism of plug in circuit breaker, is fixed on the bus on the underframe of drawout chassis at two winding contacts about comprising, it is characterized in that:
The front end of described bus is extracted direction out towards breaker body and is extended the multilayer level board, and level board is provided with the vertical circular hole of the central axis of two symmetrical buses, and the interlamellar spacing of adjacent level plate is suitable mutually with the thickness of described contact chip;
The rear portion of described contact chip is provided with vertical circular hole, and the upper and lower surface at the rear portion of every contact chip is made horizontal plane, and the contact chip outside is provided with horizontal cavity, and respectively there is the spacing preiection of a restricted spring sheet front and back end of its cavity face; The inboard at contact chip middle part is provided with dovetail groove;
Somely utilize bearing pin hinged to contact chip and the bus circular hole by separately, the horizontal plane at contact chip rear portion and the level board of bus constitute contact-making surface;
Place spring leaf in the cavity in the contact chip outside;
Some with bus after hinged penetrate in the rectangular frame contact chip, the upper and lower frames of this framework is vertically offered the pedestal hole, center pedestal is placed through in the dovetail groove of the pedestal hole of this framework and contact chip, the two ends of center pedestal are carried out spacing by gag lever post to rectangular frame, the left and right sides frame of rectangular frame acts on spring leaf, and contact chip is pressed on the pedestal of center.
Further:
The anterior inboard of described contact chip is provided with the dome arc, and some dome arcs to contact chip are common to constitute plug-in type chucks, and when the breaker body bus shook into drawer, this dome arc matched with arc groove on the breaker body bus.
The maximum anglec of rotation required when the angle of two hypotenuses of the dovetail groove of described contact chip opens with the contact chip front end is consistent.
Described gag lever post is the tabs that the two ends of described center pedestal are made into integration.
Circular hole on described bearing pin and the contact chip is a matched in clearance.
The present invention has the following advantages:
Since contact chip and bus be hinged, contact chip can rotate freely, thereby effectively reduced the resistance of breaker body when shaking drawout chassis into, the level board of the horizontal plane at contact chip rear portion and bus constitutes contact-making surface simultaneously, this rotary electric bindiny mechanism has self-adjusting ability preferably, even at breaker body bus and drawout chassis bus is not under the situation of strict alignment, also can guarantee effective contact area of contact-making surface, guarantee the conductivity of conducting system, effectively reduced the heating of circuit breaker.
2. because the some common formation of dome arc one plug-in type chucks to contact chip, when the breaker body bus shakes into drawer, this dome arc matches with arc groove on the breaker body bus, this cambered surface with make contact area increase cooperating of cambered surface, thereby further improved electric conductivity, effectively reduced the heating of circuit breaker.
3. can rotate freely owing to contact chip, therefore when breaker body shakes into drawout chassis, even because of processing or the error of fit on make the plug-in type chuck of the bus of breaker body and drawout chassis electrical connection mechanism can not complete matching the time, contact chip can produce the rotation of certain angle under the ordering about of insertion force, and the maximum anglec of rotation required when the angle of two hypotenuses of the dovetail groove of contact chip opens with the contact chip front end is consistent, thereby make the plug-in type chuck still can clamp the bus of breaker body reliably, guarantee excellent contact.
4. assemble pattern is many, conducts electricity very well, regulates freely, compact conformation, assembling be flexible and changeable.
Description of drawings
Fig. 1 is prior art constructions figure;
Fig. 2 touches bridge construction figure for prior art;
Fig. 3 is installed in structural representation in the drawout chassis for the present invention;
Fig. 4 is a three-dimensional structure diagram of the present invention;
Fig. 5 is a plane structure chart of the present invention;
Fig. 6 is a link block plane graph of the present invention;
Fig. 7 is the plane graph of the present invention by two link block combinations.
Among the figure: 1, machined surface 18 spacing preiections 19 dovetail grooves 20 dome arcs 21 gag lever posts 22 electrical connection mechanisms 23 drawout chassis 24 underframe of 2 contact chips, 3 spring leafs, 4 buses, 5 bearing pins, 6 center pedestals, 7 rectangular frames, 8 buses, 9 left and right frame 10 plug-in type chucks 11 level boards 12 circular holes 13 contact chip circular holes 14 contact-making surfaces, 15 pedestal holes, 16 inner chambers, 17 contact chips
Embodiment
The present invention is a kind of electrical connection mechanism that is used for plug in circuit breaker, is to realize that main circuit is realized conducting when breaker body bus 8 is inserted into drawout chassis 23, on the contrary the functional part structure that then disconnects.Shown in Fig. 3,4, described electrical connection mechanism comprises: be fixed on bus 4 on drawout chassis 23 underframe 24, about two winding contacts 1 and 2, spring leaf 3, bearing pin 5, center pedestal 6 and rectangular frame 7.Wherein:
The front end of bus 4 is extracted direction out towards breaker body and is extended multilayer level board 11, and level board 11 is provided with the vertical circular hole 12 (Fig. 5) of the central axis of two symmetrical buses, and the interlamellar spacing of adjacent level plate is suitable mutually with the thickness of described contact chip.
The rear portion of contact chip is provided with vertical circular hole 13, and the upper and lower surface at the rear portion of every contact chip is made horizontal plane 17, and the contact chip outside is provided with horizontal cavity; The inboard at contact chip middle part is provided with dovetail groove 19.
Some to contact chip 1,2 and bus 4 respectively the circular hole 13 by separately utilize a bearing pin 5 hinged formation to be connected with circular hole 12.Circular shaft hole 13 on described bearing pin 5 and the contact chip 1,2 is a matched in clearance, and contact chip 1,2 can rotate freely; The machined surface 17 of contact chip constitutes contact-making surface 14 with the level board 11 of bus 4 simultaneously, and this contact-making surface 14 plays the effect of conducting electric current when circuit turn-on.
Place spring leaf 3 in the cavity in the contact chip outside, respectively there is a spacing preiection 18 front and back end of contact chip outside cavity face, and this spacing preiection 18 plays the effect of restricted spring sheet 3.
Some after bus is hinged to contact chip with together with in some inner chambers 16 that spring leaf 3 penetrated a rectangular frame 7, the upper and lower frames of this framework 7 is vertically offered pedestal hole 15, center pedestal 6 is placed through in the dovetail groove 19 of the pedestal hole 15 of this framework 7 and contact chip, the two ends of center pedestal 6 are undertaken spacing by 21 pairs of rectangular frames of gag lever post 7, the left and right sides frame 9 of rectangular frame 7 acts on spring leaf 3, and contact chip 1,2 is pressed on the center pedestal 6.
The anterior inboard of described contact chip is provided with dome arc 20, and some dome arcs 20 to contact chip are common to constitute plug-in type chucks 10, and when breaker body bus 8 shook into drawer, this dome arc 20 matched with arc groove on the breaker body bus 8.
The maximum anglec of rotation required when the angle of two hypotenuses of the dovetail groove 19 of described contact chip opens with the contact chip front end is consistent.The tabs that described gag lever post 21 is made into integration for the two ends of center pedestal 6.
When breaker body shakes into drawout chassis 23, often because processing or rigging error, cause breaker body bus 8 and the plug-in type chuck 10 that is fixed on the electrical connection mechanism 22 on the drawout chassis 23 not to line up, at this moment the contact chip 1,2 of electrical connection mechanism 22 produces rotation and open-shaped attitude around bearing pin 5 under the ordering about of breaker body bus 8 insertion forces, adjust the position of plug-in type chuck 10 openings, and the maximum angle of rotation is consistent with the angle of two hypotenuses of the dovetail groove 19 at contact chip 1,2 middle parts.Breaker body bus 8 is inserted into plug-in type chuck 10 simultaneously, make plug-in type chuck 10 be strutted open-shaped attitude, the spring leaf 3 that is fixed in contact chip 1,2 outside cavitys produces crooked, the spring leaf 3 crooked elastic force that produce make plug-in type chuck 10 tightly be clipped on the breaker body bus 8, have guaranteed conductivity.
When carrying big rated current, in order to reduce the temperature rise of plug in circuit breaker, described electrical connection mechanism 22 can be designed to structure as shown in Figure 7, this structure has two groups of foregoing electrical connection mechanisms 22, this structure is installed on each terminal of base plate shown in Figure 3 24, a kind of brand-new circuit breaker electrical connection mechanism can be provided.
In sum, this is used for plug in circuit breaker, and to have an assemble pattern with electrical connection mechanism many, conduct electricity very well, regulate freely, compact conformation, the flexible and changeable advantage of assembling.
Claims (5)
1. the electrical connection mechanism of a plug in circuit breaker, is fixed on the bus on the underframe of drawout chassis at two winding contacts about comprising, it is characterized in that:
The front end of described bus is extracted direction out towards breaker body and is extended the multilayer level board, and level board is provided with the vertical circular hole of the central axis of two symmetrical buses, and the interlamellar spacing of adjacent level plate is suitable mutually with the thickness of described contact chip;
The rear portion of described contact chip is provided with vertical circular hole, and the upper and lower surface at the rear portion of every contact chip is made horizontal plane, and the contact chip outside is provided with horizontal cavity, and respectively there is the spacing preiection of a restricted spring sheet front and back end of its cavity face; The inboard at contact chip middle part is provided with dovetail groove;
Somely utilize bearing pin hinged to contact chip and the bus circular hole by separately, the horizontal plane at contact chip rear portion and the level board of bus constitute contact-making surface;
Place spring leaf in the cavity in the contact chip outside;
Some with bus after hinged penetrate in the rectangular frame contact chip, the upper and lower frames of this framework is vertically offered the pedestal hole, center pedestal is placed through in the dovetail groove of the pedestal hole of this framework and contact chip, the two ends of center pedestal are carried out spacing by gag lever post to rectangular frame, the left and right sides frame of rectangular frame acts on spring leaf, and contact chip is pressed on the pedestal of center.
2. the electrical connection mechanism of plug in circuit breaker as claimed in claim 1 is characterized in that:
The anterior inboard of described contact chip is provided with the dome arc, and some dome arcs to contact chip are common to constitute plug-in type chucks, and when the breaker body bus shook into drawer, this dome arc matched with arc groove on the breaker body bus.
3. the electrical connection mechanism of plug in circuit breaker as claimed in claim 1 is characterized in that:
The maximum anglec of rotation required when the angle of two hypotenuses of the dovetail groove of described contact chip opens with the contact chip front end is consistent.
4. the electrical connection mechanism of plug in circuit breaker as claimed in claim 1 is characterized in that:
Described gag lever post is the tabs that the two ends of described center pedestal are made into integration.
5. the electrical connection mechanism of plug in circuit breaker as claimed in claim 1 is characterized in that:
Circular hole on described bearing pin and the contact chip is a matched in clearance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810116235A CN101626147A (en) | 2008-07-07 | 2008-07-07 | Electrical connection mechanism of plug-in breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810116235A CN101626147A (en) | 2008-07-07 | 2008-07-07 | Electrical connection mechanism of plug-in breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101626147A true CN101626147A (en) | 2010-01-13 |
Family
ID=41521872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810116235A Pending CN101626147A (en) | 2008-07-07 | 2008-07-07 | Electrical connection mechanism of plug-in breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101626147A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102118009A (en) * | 2010-01-05 | 2011-07-06 | 北京人民电器厂有限公司 | Electric connection mechanism used for plug-in circuit breaker |
| CN104332910A (en) * | 2013-07-22 | 2015-02-04 | 上海良信电器股份有限公司 | Rotatable clamping electric connection mechanism |
| CN110247331A (en) * | 2018-03-09 | 2019-09-17 | 南京大全电气研究院有限公司 | Packaged type line leading device |
-
2008
- 2008-07-07 CN CN200810116235A patent/CN101626147A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102118009A (en) * | 2010-01-05 | 2011-07-06 | 北京人民电器厂有限公司 | Electric connection mechanism used for plug-in circuit breaker |
| CN102118009B (en) * | 2010-01-05 | 2013-03-20 | 北京人民电器厂有限公司 | Electric connection mechanism used for plug-in circuit breaker |
| CN104332910A (en) * | 2013-07-22 | 2015-02-04 | 上海良信电器股份有限公司 | Rotatable clamping electric connection mechanism |
| CN110247331A (en) * | 2018-03-09 | 2019-09-17 | 南京大全电气研究院有限公司 | Packaged type line leading device |
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| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100113 |