CN201402781Y - Low-voltage circuit breaker capable of locking contact part - Google Patents
Low-voltage circuit breaker capable of locking contact part Download PDFInfo
- Publication number
- CN201402781Y CN201402781Y CN2009200388558U CN200920038855U CN201402781Y CN 201402781 Y CN201402781 Y CN 201402781Y CN 2009200388558 U CN2009200388558 U CN 2009200388558U CN 200920038855 U CN200920038855 U CN 200920038855U CN 201402781 Y CN201402781 Y CN 201402781Y
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- contact
- rotor
- connecting rods
- fixed
- spring
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Abstract
The utility model discloses a low-voltage circuit breaker capable of locking contact part; two side surfaces of a contact are symmetrically fixed with two connecting rods 3, and a rotor is symmetrically fixed with two connecting rods 4, the connecting rods 4 pass through the rotor and are parallel to the connection rods 3; the two side surfaces of the contact and a dead slot inner shaft of the rotor are symmetrically mounted with two springs, wherein, one end of one spring is fixed at the connecting rods 3, the other end is fixed at the opposite connecting rods 4; and one end of the other spring is fixed at the connecting rods 4, the other end is fixed at the opposite connecting rods 3; the two connecting rods 3 on the contact have a position that the connecting rods 3 and the rotation center point of the contact (three-points) are connected as a line, the two connecting rods 4 of the rotor have a position that the connecting rods 4 and the rotation center point of the rotor (three-points)are connected as another line, and the springs have a position which makes the two lines overlap. When the contact is rotating under the role of electric repulsion, the springs are stretched as maximum to form dead point position, the contact moves towards the direction of a separating brake under the role of spring resilience force and the contact is reliably clamped.
Description
Technical field
The utility model 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 by 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 purpose of this utility model is for overcoming above-mentioned the deficiencies in the prior art, a kind of Lockable contact component of low-voltage circuit breaker is provided, moving contact can being stuck after electrodynamic repulsion force is scolded out reliably.
The technical solution adopted in the utility model is: contact runs through along the radial symmetric of rotor, contact is coaxial with the center of rotation of rotor, symmetry is fixed two connecting rods 3 on the contact two sides, and symmetry is fixed two connecting rods 4 on rotor, and 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 described contact have and 3 positions that are linked to be a line of contact fulcrum, described 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 described spring is parallel with the contact two sides.
The beneficial effects of the utility model are:
1, the utility model designs accordingly to spring force, 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, after contact drive spring passes through this position, dead point like a cork, spring changes 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 was subjected to electrodynamic repulsion force and scolds out a smaller angle, spring can block contact rapidly, prevents the falling of contact.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is a front view of the present utility model.
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, axial middle part at 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, fix two connecting rods 3 with the center of rotation symmetry of contact 2.On rotor 1, fix two connecting rods 4 with 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 by 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 by 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, 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, a kind of 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: symmetry is fixed two connecting rods (3) on contact (2) two sides, go up symmetry at rotor (1) and fix two connecting rods (4), connecting rod (4) passes rotor (1) and parallel with connecting rod (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 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; Two connecting rods (3) on the described contact (2) have and 3 positions that are linked to be a line of contact (2) fulcrum, two connecting rods (4) on the described rotor (1) have and 3 positions that are linked to be another line of rotor (1) fulcrum, and spring (5) has 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 described spring (5) is parallel with contact (2) two sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200388558U CN201402781Y (en) | 2009-05-11 | 2009-05-11 | Low-voltage circuit breaker capable of locking contact part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200388558U CN201402781Y (en) | 2009-05-11 | 2009-05-11 | Low-voltage circuit breaker capable of locking contact part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201402781Y true CN201402781Y (en) | 2010-02-10 |
Family
ID=41662582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200388558U Expired - Lifetime CN201402781Y (en) | 2009-05-11 | 2009-05-11 | Low-voltage circuit breaker capable of locking contact part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201402781Y (en) |
-
2009
- 2009-05-11 CN CN2009200388558U patent/CN201402781Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100210 Effective date of abandoning: 20090511 |