CN206331991U - The contact system of dual-interruption point breaker - Google Patents
The contact system of dual-interruption point breaker Download PDFInfo
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- CN206331991U CN206331991U CN201621357958.7U CN201621357958U CN206331991U CN 206331991 U CN206331991 U CN 206331991U CN 201621357958 U CN201621357958 U CN 201621357958U CN 206331991 U CN206331991 U CN 206331991U
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- feeler lever
- movable feeler
- contact
- supporting plate
- major axis
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Abstract
The utility model is related to a kind of contact system of dual-interruption point breaker, including movable feeler lever, supporting plate, contact support, short axle, major axis, upper bracket of the spring, spring lower support and stage clip, the rotation hole that two Central Symmetries are set is offered on movable feeler lever, short axle is provided with four, every short axle is fixed in contact support after both passing through the through hole on the upper bracket of the spring and supporting plate of movable feeler lever both sides, major axis is provided with two, every major axis is located in the chute in two supporting plates respectively through two ends after the rotation hole on a pair of spring lower supports and movable feeler lever, stage clip is disposed therein one between upper bracket of the spring and spring lower support, when movable feeler lever and supporting plate relatively rotate, moved up and down in the chute of major axis on the supporting plate.Compared with prior art, the utility model provides contact pressure using stage clip, and realizes dropproof function of the movable feeler lever after being lifted because of electrodynamic repulsion force, while being set to dual-interruption point breaker structure, further improves its breaking capacity.
Description
Technical field
The utility model belongs to low voltage electrical apparatus technology field, more particularly, to a kind of contact system of dual-interruption point breaker.
Background technology
Breaker is to refer to close, carry and cut-off the electric current under normal loop condition, and under can nonserviceabling
The device of electric current is cut off at the appointed time.The contact system of breaker is used to connect and breaking current, and with self-sustaining point
Lock characteristic.Contact system carries electric current in the case where breaker closes state and maintains path, and the open close road of incision of nonserviceabling forms disconnected
Mouthful.Each phase of breaker with double breaks and plastic case forms two fractures after separation.Moving contact when producing short circuit current flow in the loop
Denounce out because of electrodynamic repulsion force, electric arc is produced between dynamic/static contact.Because this repulsion is impulsive force in short-term, moving contact because
Repulsion reprimand is opened and will start after a period of time falling, it is most likely that reclose circuit, and this will be to switch in itself and power system
Cause damage.To avoid above-mentioned situation, it is necessary to take the technological means for preventing that movable feeler lever from falling after rise.And in addition to short-circuit conditions, break
Be in the case of road device is more close, disjunction normal current, when contact system closes normal current, contact pressure has one first
The individual process changed from small to big, subsequent contact can just be closed completely, and the change of contact pressure is very big in existing design, so as to lead
Cause contact resistance variation, contact rigid connection touch when instantaneous heating power it is very high, accelerate contact abrasion, breaking course be also as
This.On the other hand, in this operating process repeatedly, the sound contact of contact system will wear and tear.Sound after abrasion
The size of contact changes, among existing design, and this abrasion can cause contact pressure to be mutated, so that contact resistance
Increase, contact portion temperature rise, further speeds up contact abrasion, influences the contact life-span.
Chinese patent CN203026469U discloses a kind of moving contact component of breaker of plastic casing, including rotor, moving contact,
Rotary shaft, connecting rod and spring, described rotor are provided with the opening for being used for allowing moving contact independently to rotate in current-limiting operation, institute
The moving contact stated is set in the openings, and is connected by rotary shaft with rotor rotation, and the two ends of moving contact are visited in the opening
Outside, described spring is connected by connecting rod with rotor, and described spring is provided with two pairs, is separately positioned on two side surfaces of rotor
On, described each pair spring center is symmetrical arranged, and described each spring one end is fixed on rotor by connecting rod, and the other end leads to
Cross connecting rod and be connected on rotor with can moving along a straight line, and connecting rod is hung on moving contact surface and moved back and forth between two big little grooves.Should
Patent is that the spring used in single-break structure, and the patent is extension spring, and the less stable of extension spring, therefore it is provided
Contact pressure stability is poor.
Utility model content
The purpose of this utility model is exactly the defect in order to overcome above-mentioned prior art presence and provides a kind of double breaking points and break
The contact system of road device.
The purpose of this utility model can be achieved through the following technical solutions：
A kind of contact system of dual-interruption point breaker, including：
Movable feeler lever：Two ends are respectively provided with movable contact, by realizing connecing for circuit with separating with the contact of stationary contact on stationary contact bar
Logical and disjunction, stationary contact bar is used to electrically connect with electric current input terminal and outlet terminal；
Supporting plate：Two are had, parallel interval is set, described movable feeler lever is arranged between two supporting plates, Mei Gezhi
Through hole and chute are equipped with fagging；
Contact support：Two are had, middle formed touches for accommodating two supporting plates and moving after two contact support combinations
The receiving space of bar, supporting plate is connected with contact support, is moved with contact support, and contact support is used for and breaker mechanism
It is connected and is rotated under mechanism drive；
Also include offering two on short axle, major axis, upper bracket of the spring, spring lower support and stage clip, described movable feeler lever
The rotation hole that Central Symmetry is set, described short axle is provided with four, and every short axle both passes through the upper bracket of the spring of movable feeler lever both sides
It is fixed on after the through hole in supporting plate in contact support, described major axis is provided with two, and every major axis is passed through under a pair of springs
Two ends are located in the chute in two supporting plates respectively after one of rotation hole on bearing and movable feeler lever, and described stage clip is set
One between upper bracket of the spring and spring lower support wherein, when movable feeler lever and supporting plate relatively rotate, major axis is in branch
Moved up and down in chute on fagging.
Major axis can be moved along a straight line in the chute of supporting plate, and the direction of motion of major axis is limited by the chute in supporting plate, by
The pulling force of stage clip makes major axis and major axis have the trend of relative motion, so that compressing movable feeler lever makes the movable contact and stationary contact of movable feeler lever
The stationary contact reliable contacts of bar.
The both sides of movable feeler lever be respectively arranged with two short axles, each short axle from inside to outside distinguish connecting spring upper bracket,
Supporting plate and contact support, two short axles of movable feeler lever the same side are parallel and parallel with major axis.
On major axis, the rotation hole on described movable feeler lever is located at the centre of major axis, and described spring lower support is located at dynamic
The both sides of feeler lever, described supporting plate is located at the outside of spring lower support.
Two parallel stage clips are equipped with every side of movable feeler lever, each stage clip is separately positioned on movable feeler lever side wherein
Between one upper bracket of the spring and one of spring lower support.
It is equipped with each supporting plate in the through hole passed through for short axle and the chute moved along a straight line for major axis, each supporting plate
Through hole be provided with two, and diagonally positioned, the chute in each supporting plate is provided with two, and diagonally positioned, two supports
Through hole on plate and chute align setting.
Each rotation hole includes two connected arcwall faces, and the shape of each arcwall face, which meets major axis, can prop up the arc
Shape face.
The intersection of two arcwall faces is a high point.
Symmetrical structure centered on described movable feeler lever, two rotation holes are centrosymmetric setting.
The opening for allowing movable feeler lever independently to rotate in current-limiting operation is formed on two contact support combination rear walls,
Described movable feeler lever is set in the openings, and the two ends of movable feeler lever are visited outside the opening.
The contact system of dual-interruption point breaker is when bearing short circuit current flow, when the electrodynamic repulsion force that short circuit current flow is produced overcomes tactile
After head pressure, movable feeler lever can be held by reprimand, and the utility model structure is prevented from movable feeler lever and fallen again after reprimand is opened, and causes electric arc
Restrike.
Compared with prior art, the utility model advantage is：
1st, at present in existing technology, it is extension spring to prevent that movable feeler lever from falling the spring used again after reprimand is opened, and extension spring
Less stable, therefore its provide contact pressure stability it is poor, and the utility model using stage clip replacement extension spring structure, and
Stage clip is supported using upper bracket of the spring and spring lower support, stage clip structural stability is high, using the teaching of the invention it is possible to provide more stable contact pressure
Power, realizes dropproof function of the movable feeler lever after being lifted because of electrodynamic repulsion force.
2nd, the utility model is improved to the structure of movable feeler lever, offers what two Central Symmetries were set on movable feeler lever
Rotation hole, and two rotary shafts are worn from rotation hole, dual-interruption point breaker structure is constituted, for single-break structure, is entered
One step improves the breaking capacity of contact system.
3rd, the utility model realizes double breaking points function using the combination of major axis and short axle, and major axis makes mainly as rotary shaft
It is used for the elastic force that spring is provided with, short axle, and settings of short axle does not interfere with the rotation of movable feeler lever, in guarantee contact system just
Often on the premise of work, compact conformation and steadiness height.
Brief description of the drawings
Fig. 1 is the contact system structure schematic diagram of the utility model dual-interruption point breaker；
Fig. 2 is movable feeler lever structural representation；
Fig. 3 is movable feeler lever stage clip force direction schematic diagram under a state；
Fig. 4 is movable feeler lever stage clip force direction schematic diagram under another state.
Embodiment
The utility model is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment
A kind of contact system of dual-interruption point breaker, as shown in figure 1, including movable feeler lever 2, supporting plate 7, contact support 8, short
Axle 3, major axis 4, upper bracket of the spring 5, spring lower support 6 and stage clip 9, the two ends of movable feeler lever 2 are respectively provided with movable contact 1, by with stationary contact
The connection and disjunction of circuit are realized in the contact of stationary contact with separating on bar, and stationary contact bar is used for and electric current input terminal and outlet terminal
Electrical connection；Supporting plate 7 has two, and parallel interval is set, and movable feeler lever 2 is arranged between two supporting plates 7, each supporting plate 7
On the through hole that is equipped with the through hole passed through for major axis 3 and the chute moved along a straight line for major axis 4, each supporting plate 7 be provided with two,
And it is diagonally positioned, the chute in each supporting plate 7 is provided with two, and diagonally positioned, through hole and cunning in two supporting plates 7
Groove aligns setting；Contact support 8 has two, and two contact supports 8 are middle after combining to be formed for accommodating two supporting plates 7
And the receiving space of movable feeler lever 2, supporting plate 7 is connected with contact support 8, moved with contact support 8, two contact supports 8
Formed on combination rear wall for allowing the independent opening rotated of movable feeler lever 2 in current-limiting operation, movable feeler lever 2 is arranged on the opening
In, and the two ends of movable feeler lever 2 are visited outside the opening, and contact support 8 is used to be connected with breaker mechanism and under mechanism drive turn
It is dynamic；The rotation hole 10 that two Central Symmetries are set is offered on movable feeler lever 2, short axle 3 is provided with four, and every short axle 3 both passes through dynamic
It is fixed on after through hole on the upper bracket of the spring 5 and supporting plate 7 of the both sides of feeler lever 2 in contact support 8, major axis 4 is provided with two, every
Major axis 4 is located at two supporting plates 7 respectively through two ends after one of rotation hole 10 on a pair of spring lower supports 6 and movable feeler lever 2
On chute in, stage clip 9 is disposed therein between a upper bracket of the spring 5 and spring lower support 6, when movable feeler lever 2 and supporting plate 7
When relatively rotating, major axis 4 moves up and down in the chute in supporting plate 7.
Major axis 4 can be moved along a straight line in the chute of supporting plate 7, and the direction of motion of major axis 4 is limited by the chute in supporting plate 7
It is fixed, make major axis 3 that there is the trend of relative motion with major axis 4 by the pulling force of stage clip 9, so that compressing movable feeler lever 2 makes the dynamic of movable feeler lever 2
Contact 1 and the stationary contact reliable contacts of stationary contact bar.
Wherein, the both sides of movable feeler lever 2 are respectively arranged with two short axles 3, each short axle 3 distinguishes connecting spring from inside to outside
Upper bracket 5, supporting plate 7 and contact support 8, two short axles 3 of the same side of movable feeler lever 2 are parallel and parallel with major axis 4.It is dynamic to touch
Rotation hole 10 on bar 2 is located at the centre of major axis 4, and spring lower support 6 is located at the both sides of movable feeler lever 2, and supporting plate 7 is located under spring
The outside of bearing 6.Two parallel stage clips 9 are equipped with every side of movable feeler lever 2, each stage clip 9 is separately positioned on movable feeler lever 2
Between the one of upper bracket of the spring 5 in side and one of spring lower support 6.
As shown in Fig. 2 each rotation hole 10 includes two connected arcwall faces, the shape of each arcwall face meets major axis
4 can prop up the arcwall face.The intersection of two arcwall faces is a high point.Symmetrical structure centered on movable feeler lever 2, two rotation holes
10 are centrosymmetric setting.
As shown in figure 3, spring lower support 6 drives major axis 4 to move in the presence of stage clip 9, major axis 4 is set to compress on movable feeler lever
Surface a-b sections of rotation hole 10, produces the active force in F directions in Fig. 3, the movement tendency for making movable feeler lever 2 that there is inverse gesture pin to rotate.
So as to compress the stationary contact in figure on not illustrated stationary contact bar so that there is provided reliable conduction with stationary contact bar firm contact for movable feeler lever
Loop.After contact system is by short circuit current flow, clockwise rotation can occur in the presence of electrodynamic repulsion force for movable feeler lever 2.
At this moment contact support 8 does not start to motion, therefore the yet remains stationary of supporting plate 7 also, is then produced between movable feeler lever 2 and supporting plate 7
Relative rotation is given birth to.In the rotation process of movable feeler lever 2, major axis 4 is moved in the strip grooves of supporting plate 7, and with movable feeler lever 2
Rotation, the contact position of movable feeler lever 2 and major axis 4 changes.When the contact point of movable feeler lever 2 and major axis 4 is transitioned into by a-b sections
After b-c sections, movable feeler lever 2 reaches position as shown in Figure 4.At this moment major axis is changed into the F side in Fig. 4 to the force direction of movable feeler lever
To, make movable feeler lever that there is the trend moved clockwise, so that drive movable feeler lever to continue towards the motion of principle stationary contact bar direction, it is anti-
Only after electrodynamic repulsion force decay, movable feeler lever, which falls after rise, occurs arc reignition phenomenon, to switch in itself or even power system is damaged.
The above-mentioned description to embodiment is understood that for ease of those skilled in the art and using practicality
It is new.Person skilled in the art obviously can easily make various modifications to these embodiments, and illustrating herein
General Principle be applied in other embodiment without passing through performing creative labour.Therefore, the utility model is not limited to above-mentioned
Embodiment, those skilled in the art disclose according to of the present utility model, do not depart from improvement that the utility model category made and
Modification all should be within protection domain of the present utility model.
Claims (9)
1. a kind of contact system of dual-interruption point breaker, including：
Movable feeler lever (2)：Two ends are respectively provided with movable contact (1), and circuit is realized with separating by the contact with stationary contact on stationary contact bar
Connect and disjunction；
Supporting plate (7)：Two are had, parallel interval is set, described movable feeler lever (2) is arranged between two supporting plates (7), often
Through hole and chute are equipped with individual supporting plate (7)；
Contact support (8)：Have two, after two contact supports (8) combinations in the middle of formed for accommodate two supporting plates (7) and
The receiving space of movable feeler lever (2), supporting plate (7) is connected with contact support (8), is moved with contact support (8), contact support
(8) it is used to be connected with breaker mechanism and is rotated under mechanism drive；
Characterized in that, also including short axle (3), major axis (4), upper bracket of the spring (5), spring lower support (6) and stage clip (9), institute
The rotation hole (10) that two Central Symmetries are set is offered on the movable feeler lever (2) stated, described short axle (3) is provided with four, every
Short axle (3) is fixed on contact support after both passing through the through hole on the upper bracket of the spring (5) and supporting plate (7) of movable feeler lever (2) both sides
(8) on, described major axis (4) is provided with two, and every major axis (4) is passed through on a pair of spring lower supports (6) and movable feeler lever (2) wherein
Two ends are located in the chute on two supporting plates (7) one rotation hole (10) respectively afterwards, and described stage clip (9) is disposed therein one
Between individual upper bracket of the spring (5) and spring lower support (6), when movable feeler lever (2) relatively rotates with supporting plate (7), major axis
(4) moved up and down in the chute in supporting plate (7).
2. a kind of contact system of dual-interruption point breaker according to claim 1, it is characterised in that the two of movable feeler lever (2)
Side is respectively arranged with two short axles (3), each short axle (3) distinguishes connecting spring upper bracket (5), supporting plate (7) from inside to outside
And contact support (8), two short axles (3) of movable feeler lever (2) the same side are parallel and parallel with major axis (4).
3. the contact system of a kind of dual-interruption point breaker according to claim 1, it is characterised in that on major axis (4), institute
The rotation hole (10) on movable feeler lever (2) stated is located at the centre of major axis (4), and described spring lower support (6) is located at movable feeler lever (2)
Both sides, described supporting plate (7) is located at the outside of spring lower support (6).
4. the contact system of a kind of dual-interruption point breaker according to claim 1, it is characterised in that in movable feeler lever (2)
Two parallel stage clips (9) are equipped with per side, each stage clip (9) is separately positioned on the one of spring in movable feeler lever (2) side
Between upper bracket (5) and one of spring lower support (6).
5. a kind of contact system of dual-interruption point breaker according to claim 1, it is characterised in that each supporting plate (7)
On be equipped with for short axle (3) through hole that passes through and the chute for major axis (4) linear motion, the through hole on each supporting plate (7) is set
There are two, and it is diagonally positioned, the chute on each supporting plate (7) is provided with two, and diagonally positioned, two supporting plates (7)
On through hole and chute align setting.
6. a kind of contact system of dual-interruption point breaker according to claim 1, it is characterised in that each rotation hole (10)
Include two connected arcwall faces, the shape of each arcwall face, which meets major axis (4), can prop up the arcwall face.
7. a kind of contact system of dual-interruption point breaker according to claim 6, it is characterised in that the phase of two arcwall faces
It is a high point at friendship.
8. a kind of contact system of dual-interruption point breaker according to claim 1, it is characterised in that described movable feeler lever
(2) symmetrical structure centered on, two rotation holes (10) are centrosymmetric setting.
9. a kind of contact system of dual-interruption point breaker according to claim 1, it is characterised in that two contact supports
(8) opening for allowing movable feeler lever (2) independently to rotate in current-limiting operation, described movable feeler lever are formed on combination rear wall
(2) set in the openings, and the two ends of movable feeler lever (2) are visited outside the opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621357958.7U CN206331991U (en) | 2016-12-12 | 2016-12-12 | The contact system of dual-interruption point breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621357958.7U CN206331991U (en) | 2016-12-12 | 2016-12-12 | The contact system of dual-interruption point breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206331991U true CN206331991U (en) | 2017-07-14 |
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ID=59290902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621357958.7U Active CN206331991U (en) | 2016-12-12 | 2016-12-12 | The contact system of dual-interruption point breaker |
Country Status (1)
| Country | Link |
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| CN (1) | CN206331991U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106783442A (en) * | 2016-12-12 | 2017-05-31 | 上海电器股份有限公司人民电器厂 | A kind of contact system of dual-interruption point breaker |
-
2016
- 2016-12-12 CN CN201621357958.7U patent/CN206331991U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106783442A (en) * | 2016-12-12 | 2017-05-31 | 上海电器股份有限公司人民电器厂 | A kind of contact system of dual-interruption point breaker |
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