CN101685731B - Lockable contact component of low-voltage circuit breaker - Google Patents
Lockable contact component of low-voltage circuit breaker Download PDFInfo
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- CN101685731B CN101685731B CN2009100266818A CN200910026681A CN101685731B CN 101685731 B CN101685731 B CN 101685731B CN 2009100266818 A CN2009100266818 A CN 2009100266818A CN 200910026681 A CN200910026681 A CN 200910026681A CN 101685731 B CN101685731 B CN 101685731B
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Abstract
The invention discloses a lockable contact component of a low-voltage circuit breaker. Two connecting rods 3 are symmetrically fixed on two lateral surfaces of a contact, two connecting rods 4 are symmetrically fixed on a rotor, and the connecting rods 4 pass through the rotor and are parallel to the connecting rods 3; two springs are arranged in the two lateral surfaces of the contact and an empty groove of the rotor in axial symmetry, wherein one end of one spring is fixed on the connecting rod 3, and the other end of the spring is fixed on the opposite connecting rod 4; one end of the other spring is fixed on the other connecting rod 4, and the other end of the other spring is fixed on the other opposite connecting rod 3; and the two connecting rods 3 on the contact have the positions which are connected with the rotating central point of the contact to form one straight line, the two connecting rods 4 on the rotor have the positions which are connected with the rotating central point of the rotor to form the other straight line, and the springs have the positions for overlapping the two straight lines. When the contact is revolved under the action of electric repulsion force, the springs are stretched to be longest so as to form dead point positions, and the contact moves to a tripping direction under the action of resilience force of the springs to be reliably locked.
Description
Technical field
The present invention relates to the contact component of low-pressure plastic shell circuit breaker, by the operating mechanism driven rotary of circuit breaker.
Background technology
At present, mould the case low-voltage circuit breaker moving contact part and form, drive the rotor rotation through the bar on the operating mechanism by rotor, contact and gripping mechanism etc., by the rotation of rotor realize moving contact deciliter.Wherein, the principle of gripping mechanism is to utilize contact or epitrochanterian edge to scold when reaching stuck position at contact, and the contact-making surface between rotor or contact and accessory blocks contact.But; Above-mentioned contact-making surface can cause blocking insecure problem because of the wearing and tearing of contact-making surface after repeatedly blocking; Moving contact is not reliably blocked after electrodynamic repulsion force is scolded out and fall after rise, thereby cause restriking of electric arc in the arc control device, be unfavorable for the disjunction of circuit breaker.
Summary of the invention
The objective of the invention is provides a kind of Lockable contact component of low-voltage circuit breaker for overcoming the deficiency of above-mentioned prior art, and moving contact can be stuck after electrodynamic repulsion force is scolded out reliably.
The technical scheme that the present invention adopts is: contact runs through along the radial symmetric of rotor; Contact is coaxial with the center of rotation of rotor; Fixing two connecting rods 3 of symmetry on the contact two sides, fixing two connecting rods 4 of symmetry on rotor, connecting rod 4 passes rotor and parallel with connecting rod 3; Axial symmetry is installed two springs in the dead slot of contact two sides and rotor, and wherein an end of a spring is fixed on the connecting rod 3, and the other end is fixed on the connecting rod 4 on opposite; One end of another root spring is fixed on the connecting rod 4, and the other end is fixed on the connecting rod 3 on opposite; Two connecting rods 3 on the said contact have and 3 positions that are linked to be a line of contact fulcrum; Said epitrochanterian two connecting rods 4 have and 3 positions that are linked to be another line of rotor rotation central point, and spring has the position that these two lines are overlapped.
The installation direction of said spring is parallel with the contact two sides.
The invention has the beneficial effects as follows:
1, the present invention designs spring force accordingly; When under the effect of contact at electrodynamic repulsion force during spinning movement; Spring is stretched to the most microscler one-tenth dead-centre position, and after contact drive spring passed through this position, dead point like a cork, spring changed to the rotation direction of contact; Contact is moved to the separating brake direction by the effect of recoil of spring power, thereby blocks contact reliably.
When 2, in a single day contact received electrodynamic repulsion force and scold out a smaller angle, spring can block contact rapidly, prevents the falling of contact.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is done further explain.
Fig. 1 is a front view of the present invention.
Fig. 2 is the cutaway view of Fig. 1 in the B-B position.
Fig. 3 is the cutaway view of Fig. 1 in the C-C position.
Fig. 4 is the cutaway view of Fig. 3 in the D-D position.
Among the figure: 1. rotor; 2 contacts; 3. connecting rod; 4. connecting rod; 5. spring; 7.. dead slot; 8 holes..
Embodiment
As shown in the figure; Rotor 1 is an axially symmetric structure, and in the axial middle part of rotor 1, contact 2 runs through towards the radial symmetric of rotor 1; Contact 2 is coaxial with the center of rotation of rotor 1; Contact 2 rotates in the dead slot 7 of rotor 1 with this center of rotation, and contact 2 can freely turn round action between make position and open position, and the line of contact 2 centers of rotation and connecting rod 4 is freely rotated at the cavity place.
On the two sides of contact 2, with fixing two connecting rods 3 of center of rotation symmetry of contact 2.On rotor 1, with fixing two connecting rods 4 of this center of rotation symmetry, connecting rod 4 passes pair of holes on the rotor 1 and parallel with connecting rod 3.
Axial symmetry is installed two springs 5 in the dead slot 7 of the two sides of contact 2, rotor 1, and the installation direction of spring 5 is parallel with contact 2 two sides, makes wherein that an end of a spring 5 is fixed on the connecting rod 3, and the other end is fixed on the connecting rod 4 on opposite; One end of another root spring 5 is fixed on the connecting rod 4, and the other end is fixed on the connecting rod 3 on opposite.
When scolding out motion under the effect of contact 2 at electrodynamic repulsion force; Because the mechanical resistance of spring 5 hinders contact 2 motions; The such position of meeting process: promptly 3 of the central points of two connecting rods 3 on the fulcrum of contact 2 and the contact 2 are linked to be a line, have and 3 positions that become line of fulcrum during two connecting rods 3 designs.3 of the central points of two connecting rods 4 on the fulcrum of rotor 1 and the rotor 1 are linked to be another line, should have 3 positions that become line of fulcrum with rotor 1 during two connecting rod 4 designs.When these two lines overlap, form the dead-centre position of spring 5.
When contact 2 was in closing position, an end of spring 5 was fixed on the connecting rod 4, and connecting rod 4 is static with respect to rotor 1.Spring 5 provides contact pressure through 3 pairs of contacts 2 of connecting rod, and contact 2 is rotatable with respect to rotor 1; Contact 2 is rotatable with respect to connecting rod 4.Scolded by electrodynamic repulsion force by "on" position at contact 2 and to reach in the gate-dividing state process, rotor 1 does not rotate all the time; Spring 5 through with contact 2 on 3 pairs of contacts 2 of connecting rod apply contact pressure.
When being short-circuited electric current, contact 2 can be scolded under the effect of electrodynamic repulsion force and held, and contact 2 is scolded in the open procedure; Contact 2 overcomes the power motion of spring 5, and when contact 2 motions made the direction of the power of spring 5 pass through above-mentioned dead-centre position, the rebound effect of 5 pairs of contacts 2 of spring made contact 2 rotation trend change; Contact 2 moves rapidly towards the separating brake position; Remain on gate-dividing state simultaneously, thereby locked contact 2, prevent that contact 2 from falling once more.
On rotor 1, be provided with pair of holes 8 and match, the power resources of this contacts of low-voltage circuit breaker functional unit are provided with the circuit breaker operation mechanism bar.When circuit breaker operation mechanism moved, rotor 1 rotated under the drive of circuit breaker operation mechanism, and spring 5 is resetted.
Claims (2)
1. Lockable contact component of low-voltage circuit breaker; Contact (2) runs through along the radial symmetric of rotor (1); Contact (2) is coaxial with the center of rotation of rotor (1); It is characterized in that: fixing two head rods (3) of symmetry on contact (2) two sides, go up fixing two second connecting rods (4) of symmetry at rotor (1), two second connecting rods (4) all pass rotor (1) and parallel with two head rods (3); Axial symmetry is installed two springs (5) in the dead slot (7) of contact (2) two sides and rotor (1), and wherein an end of a spring (5) is fixed on the head rod (3), and the other end is fixed on another second connecting rod (4) on opposite; One end of another root spring (5) is fixed on one second connecting rod (4), and the other end is fixed on another head rod (3) on opposite; Two head rods (3) on the said contact (2) have and 3 positions that are linked to be a line of contact (2) fulcrum; Two second connecting rods (4) on the said rotor (1) have and 3 positions that are linked to be another line of rotor (1) fulcrum, and said two springs (5) have the position that these two lines are overlapped.
2. Lockable contact component of low-voltage circuit breaker according to claim 1 is characterized in that: the installation direction of said two springs (5) is parallel with contact (2) two sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100266818A CN101685731B (en) | 2009-05-11 | 2009-05-11 | Lockable contact component of low-voltage circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100266818A CN101685731B (en) | 2009-05-11 | 2009-05-11 | Lockable contact component of low-voltage circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101685731A CN101685731A (en) | 2010-03-31 |
| CN101685731B true CN101685731B (en) | 2012-06-27 |
Family
ID=42048816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100266818A Active CN101685731B (en) | 2009-05-11 | 2009-05-11 | Lockable contact component of low-voltage circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101685731B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102623199B (en) * | 2012-04-19 | 2015-03-18 | 上海诺雅克电气有限公司 | Electric conduction system of switch device, low-voltage plastic-shell circuit breaker and thermal overload relay |
| CN109637908B (en) * | 2018-12-21 | 2020-07-14 | 上海电器科学研究所（集团）有限公司 | Contact locking mechanism of molded case circuit breaker |
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2009
- 2009-05-11 CN CN2009100266818A patent/CN101685731B/en active Active
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| Publication number | Publication date |
|---|---|
| CN101685731A (en) | 2010-03-31 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20220701 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, East Xing Gang Dong Road, Zhenjiang New District, Jiangsu, Zhenjiang A5 Patentee before: Jiangsu Phono Electric Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| 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. |