CN101783269B - Repulsive clamping static contact structure of low-voltage circuit breaker - Google Patents
Repulsive clamping static contact structure of low-voltage circuit breaker Download PDFInfo
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- CN101783269B CN101783269B CN2010101052838A CN201010105283A CN101783269B CN 101783269 B CN101783269 B CN 101783269B CN 2010101052838 A CN2010101052838 A CN 2010101052838A CN 201010105283 A CN201010105283 A CN 201010105283A CN 101783269 B CN101783269 B CN 101783269B
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Abstract
The invention discloses a repulsive clamping static contact structure of low-voltage circuit breaker. The two ends of a locating shaft are fixed on a support, the middle of the locating shaft penetrates a static contact and pressure springs which are respectively arranged at the two sides of the static contact, the pressure spring is enveloped in the support and causes a connector row to compact the static contact, the free end of the static contact is arranged in a through slot on the bottom wall of the support, a tension spring is arranged in a first through slot of the support and corner approach thereof is fixed on a first boss in the first through slot, and the other corner approach of the tension spring penetrates the other through slot on the bottom wall of the support and is fixedly connected with the free end of the static contact. The static contact structure of the invention is modularized, clamping structure is adopted to realize electrical connection between static contact and inlet wire row, contact resistance is less, service life of static contact of circuit breaker can be prolonged, assembly is simple, and production cost is low.
Description
Technical field
The present invention relates to mould the fixed contact parts of case low-voltage circuit breaker.
Background technology
Moulding being electrically connected roughly of case low-voltage circuit breaker conducting system comprises: being connected of the connection between being connected of lead-in line row and fixed contact, the dynamic/static contact, moving contact and thermal element and being connected of thermal element and outlet row, it is the part that the circuit breaker internal electric connects most critical that dynamic/static contact wherein connects.Circuit breaker produces electric arc between the dynamic/static contact in the process of breaking current, can cause wearing and tearing to the dynamic/static contact of circuit breaker, and quickens the migration of dynamic/static contact material, and life-span of dynamic/static contact is impacted.At present, moulding under the high situation of case low-voltage circuit breaker breaking capacity, its fixed contact generally is the U type structure that can scold out; Adopt inlet wire mode down; The fixed contact of this U type structure of scolding out is a rotary type, and the mode that generally adopts copper litz wire to weld is connected row with fixed contact and couples together with the end of incoming cables, and welding can destroy copper litz wire; And the resistance of weld is higher, temperature rise when causing the circuit breaker operation.
Summary of the invention
The purpose of this invention is to provide a kind of static contact structure simple, that operating characteristics is stablized and can be scolded out that assembles.
The technical scheme that the present invention adopts is: the locating shaft two ends are fixed on the support; Pass the stage clip that fixed contact and branch are located at the fixed contact both sides in the middle of the locating shaft; The stage clip envelope is in support and make and connect the tight fixed contact of row pressure; The free end of fixed contact is arranged in the groove of diapire of support, and first groove and its that extension spring is arranged in support are hung the angle and be fixed on first boss of first groove, another extension angle of extension spring pass support diapire another groove and be fixedly connected the free end of fixed contact.
The invention has the beneficial effects as follows:
1, static contact structure modularization, assembling is simple, reliable, and the fixed contact mounting means of comparing traditional is simpler; But really more reliable, traditional fixed contact of scolding out generally is that fixedly fixed contact of an independent support is arranged, and spring and fixed contact are fixed on the support; Utilize screw directly to be fixed on the circuit breaker base then, the spacing inaccuracy of this structure fixed contact, the change in location of fixed contact is big; The installation of spring and fixing difficulty, and generally mostly be that torsion spring provides the reset force of fixed contact, power is stable inadequately; And fixed contact of the present invention and spring are installed simply, the location is reliable, have avoided the drawback in traditional fixed contact installation and the use.
2, fixed contact directly is connected through clamp structure with lead-in line row, has avoided the welding procedure of traditional static contact structure, makes breaker structure more stable, more reliable; Mostly utilize welding to realize being electrically connected between the two between traditional fixed contact and the lead-in line row, and welding all damages for fixed contact and lead-in line row, and weld resistance is big; Also be the potential risk of circuit breaker failure, the present invention has abandoned traditional welding manner, adopts clamp structure to realize being electrically connected between fixed contact and the lead-in line row; Contact resistance is littler; Can improve the contact life-span of circuit breaker, and assembling is simple, production cost is lower.
3, the fixed contact spring adopts the extension spring structure, and traditional static contact structure of scolding out adopts the torsion spring structure more, compares and torsion spring, and the power that extension spring provides is more linear, and is more stable.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is done further explain.
Fig. 1 is a structure chart of the present invention;
Fig. 2 is the explosive view of Fig. 1;
Fig. 3 is the enlarged drawing of Fig. 1 medium-height trestle 1 structure;
Fig. 4 is that the rear side of Fig. 3 is to view;
Fig. 5 is fixed contact 2 structure charts among Fig. 1;
Fig. 6 is extension spring 5 structure enlarged drawings among Fig. 1;
Fig. 7 connects row's 6 structure charts among Fig. 1;
Among the figure: 1. support; 11. diapire; 12. the first side wall; 13. second sidewall; 111. first groove; 112. first boss; 113. second groove; 114. the 3rd groove; 115. round tube hole; 121. first round tube hole; 122. the first flexible groove; 131. second round tube hole; 132. the second flexible groove; 1121. the 3rd round tube hole;
2. fixed contact; 21. round tube hole; 22. free end; 221. stopper slot;
3. stage clip; 4. locating shaft; 5. extension spring; 51. extension angle; 52. extension angle;
6. connect row; 61,62. parallel conductors; 611,621. round tube holes.
Embodiment
Shown in Fig. 1-2; The present invention is by support 1, fixed contact 2, stage clip 3, extension spring 5, locating shaft 4 and be connected row and 6 form; The two ends of locating shaft 4 are fixed on the support 1, and the centre of locating shaft 4 is passed fixed contact 2 and divided the stage clip 3 that is located at fixed contact 2 both sides, and stage clip 3 envelopes are in support 1 and make connection row 6 compress fixed contact 2; The free end 22 of fixed contact 2 is arranged in the groove of diapire 11 of support 1; First groove 111 and its that extension spring 5 is arranged in support 1 are hung angle 51 and are fixed on first boss 112 of first groove 111, another extension angle 52 of extension spring 5 pass support 1 diapire 11 another groove and be fixedly connected the free end 22 of fixed contact 2, concrete structure is following:
Shown in Fig. 3-4; Support 1 is a working of plastics; Process by injection moulding or compression moulding mode; The first side wall 12 and second sidewall 13 that support 1 has diapire 11 and extends along diapire 11 1 ends along equidirectional, the first side wall 12 and second sidewall, 13 left-right symmetric are symmetrically distributed with first round tube hole 121 and second round tube hole 131 on the first side wall 12 and second sidewall 13; And be provided with the first flexible groove 122 and the second flexible groove 132 at first round tube hole 121 and second round tube hole, 131 concentric position, the said first flexible groove 122 and the second flexible groove 132 hold stage clip 3 respectively.Have first groove 111 at diapire 11 away from a side of first round tube hole 121 and second round tube hole 131, said first groove 111 is to hold extension spring 5.In first groove 111 and away from an end of first round tube hole 121 and second round tube hole 131, have first boss 112, on first boss 112, be provided with the 3rd round tube hole 1121, said the 3rd round tube hole 1121 is with the extension angle 51 of fixedly extension spring 5.Have second groove 113 and the 3rd groove 114 at diapire 11 near an end of first round tube hole 121 and second round tube hole 131; Second groove 113 communicates on diapire 11 with first groove 111, and the 3rd groove 114 is identical and vertical with diapire 11 with second sidewall, 13 directions with the first side wall 12.Second groove 113 holds the installation at the extension angle 52 of extension spring 5, and the 3rd groove 114 holds the free end 22 of a fixed contact 2, limits the rotation original position of fixed contact 2 simultaneously.Support 1 is provided with a round tube hole 115 at the end near first, second round tube hole 121,131, and this round tube hole 115 is used for mounting screw, support 1 is connected on the base of circuit breaker, accomplishes the assembling of fixed contact module.
As shown in Figure 5, said fixed contact 2 has a round tube hole 21, as the center of rotation of fixed contact 2, has a stopper slot 221 at the free end that does not weld silver contact 22, with the extension angle 52 of fixedly extension spring 5.
As shown in Figure 6; One end of said extension spring 5 has an extension angle 51, and the other end has an extension angle 52, hangs angle 51 and is fixed on the 3rd round tube hole 1121 of support 1; The other end is fixed on the stopper slot 221 of fixed contact 2, and the restoring force of fixed contact 2 is provided through the rotation stretching extension spring 5 of fixed contact 2.
As shown in Figure 7; Said connection row's 6 a end is the connection row of circuit breaker end of incoming cables; The other end is symmetry and two ends parallel conductor 61,62 independently; On parallel conductor 61,62 ends, be provided with identical and symmetrical round tube hole 611,621; Gap between parallel conductor 61,62 and the end that fixed contact 2 matches is identical with the thickness of fixed contact 2, and stage clip 3 effects that parallel conductor 61,62 is arranged in its round tube hole 611,621 both sides clamp fixed contact 2 down, guarantee fixed contact 2 and be connected arrange 6 between good electrical contact.
Mounting means of the present invention is following: the round tube hole 21 that locating shaft 4 is passed fixed contact 2 be connected row 6 on round tube hole 611,621 and divide the stage clip 3 that is located at round tube hole 611,621 both sides; Fixed contact 2 and two stage clips 3 pass first round tube hole 121 and second round tube hole 131 on the support 1 through locating shaft 4, and fixed contact 2, connection row 6 and stage clip 3 are fixed on the support 1.Two stage clips 3 by envelope in first, second flexible groove 122,132 of support 1 and guarantee that the parallel conductor 61,62 that connects row 6 compresses fixed contact 2, so that contact well between the parallel conductor 61,62 that connects row 6 and the fixed contact 2.The free end 22 of fixed contact 2 is positioned at the 3rd groove 114 of support 1, and said the 3rd groove 114 and the free end 22 of fixed contact 2 are equipped with the original position of spacing fixed contact 2 mutually; Extension spring 5 is arranged in support 1 first groove 111; It is hung angle 51 and is fixed on the round tube hole 1121 on the support 1; Hang on the stopper slot 221 on the free end 22 that second groove 113 that passes support 1 in angle 52 is fixed to fixed contact 2, the deformation that relies on the rotation of fixed contact 2 to change extension spring 5 provides the reset force of fixed contact 2.Utilize at last round tube hole 115 mounting screws with support 1 reliable fixation to the circuit breaker base.
Claims (4)
1. the repulsive clamping static contact structure of a low-voltage circuit breaker; Comprise fixed contact (2) and be connected row (6); It is characterized in that: locating shaft (4) two ends are fixed on the support (1); Pass fixed contact (2) in the middle of the locating shaft (4) and divide the stage clip (3) that is located at fixed contact (2) both sides; Stage clip (3) envelope is in support (1) and make connection row (6) compress fixed contact (2); The free end (22) of fixed contact (2) is arranged in the groove of diapire (11) of support (1), and first groove (111) and its first extension angle (51) that extension spring (5) is arranged in support (1) are fixed on first boss (112) of first groove (111), the second extension angle (52) of extension spring (5) pass support (1) diapire (11) another groove and be fixedly connected the free end (22) of fixed contact (2).
2. the repulsive clamping static contact structure of a kind of low-voltage circuit breaker according to claim 1; It is characterized in that: said support (1) has extension and symmetrical the first side wall (12) and second sidewall (13) along diapire (11) one ends along equidirectional; Be symmetrically distributed with first round tube hole (121) and second round tube hole (131) on the two side; Be provided with the first flexible groove (122) and the second flexible groove (132) that holds stage clip (3) in first round tube hole (121) and second round tube hole (131) concentric position; Side away from first round tube hole (121) and second round tube hole (131) of diapire (11) has first groove (111) that holds extension spring (5); In first groove (111) and away from an end of first round tube hole (121) and second round tube hole (131), has first boss (112); First boss (112) is provided with the 3rd round tube hole (1121) at the first extension angle (51) of fixedly extension spring (5); Have second groove (113) at the second extension angle (52) that holds extension spring (5) near an end of first round tube hole (121) and second round tube hole (131) and hold the 3rd groove (114) of the free end (22) of a fixed contact (2) at diapire (11); Second groove (113) communicates on diapire (11) with first groove (111), and the 3rd groove (114) is identical with second sidewall (13) direction with the first side wall (12) and vertical with diapire (11).
3. the repulsive clamping static contact structure of a kind of low-voltage circuit breaker according to claim 1; It is characterized in that: said fixed contact (2) has a round tube hole as center of rotation (21), and free end (22) has the second extension angle (52) of fixedly extension spring of a stopper slot (221) (5).
4. the repulsive clamping static contact structure of a kind of low-voltage circuit breaker according to claim 1; It is characterized in that: said connection row (6) has symmetry and two ends parallel conductor (61,62) independently; On parallel conductor (61,62) end, have identical and symmetrical round tube hole (611,621), the gap between parallel conductor (61,62) and the end that fixed contact (2) matches is identical with the thickness of fixed contact (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101052838A CN101783269B (en) | 2010-01-27 | 2010-01-27 | Repulsive clamping static contact structure of low-voltage circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101052838A CN101783269B (en) | 2010-01-27 | 2010-01-27 | Repulsive clamping static contact structure of low-voltage circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101783269A CN101783269A (en) | 2010-07-21 |
| CN101783269B true CN101783269B (en) | 2012-07-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101052838A Active CN101783269B (en) | 2010-01-27 | 2010-01-27 | Repulsive clamping static contact structure of low-voltage circuit breaker |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102543593B (en) * | 2012-03-08 | 2014-06-04 | 江苏辉能电气有限公司 | Method for mounting rotating shaft of molded case circuit breaker |
| CN204348657U (en) * | 2014-12-10 | 2015-05-20 | 浙江正泰电器股份有限公司 | The contact apparatus with turning fixed contact of circuit breaker and circuit breaker |
| CN204348658U (en) * | 2014-12-10 | 2015-05-20 | 浙江正泰电器股份有限公司 | The contact apparatus with turning fixed contact of circuit breaker and circuit breaker |
| CN105845523A (en) * | 2016-06-08 | 2016-08-10 | 有能集团江苏电气有限公司 | Circuit breaker |
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- 2010-01-27 CN CN2010101052838A patent/CN101783269B/en active Active
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| CN101783269A (en) | 2010-07-21 |
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| C06 | Publication | ||
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Effective date of registration: 20220516 Address after: 212132 No. 97, Wufengshan Road, Dagang, New District, Zhenjiang City, Jiangsu Province Patentee after: Huineng low voltage electric appliance (Jiangsu) Co.,Ltd. Address before: 212132 mechanical and Electrical Industrial Park, Dagang East Road, Dagang New District, Zhenjiang, Jiangsu, Zhenjiang A5 Patentee before: Jiangsu Phono Electric Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 212132 No. 97, Wufengshan Road, Dagang, New District, Zhenjiang City, Jiangsu Province Patentee after: Eaton Huineng low voltage electrical appliances (Jiangsu) Co.,Ltd. Address before: 212132 No. 97, Wufengshan Road, Dagang, New District, Zhenjiang City, Jiangsu Province Patentee before: Huineng low voltage electric appliance (Jiangsu) Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |