CN102903577A - Contactor with switching mechanism - Google Patents
Contactor with switching mechanism Download PDFInfo
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- CN102903577A CN102903577A CN2011102114802A CN201110211480A CN102903577A CN 102903577 A CN102903577 A CN 102903577A CN 2011102114802 A CN2011102114802 A CN 2011102114802A CN 201110211480 A CN201110211480 A CN 201110211480A CN 102903577 A CN102903577 A CN 102903577A
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- contactor
- iron core
- moving
- switching mechanism
- moving contact
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Abstract
The invention discloses a contactor with a switching mechanism. The contactor comprises fixed contacts, movable contacts, a movable iron core, the switching mechanism and a tripping mechanism, the fixed contacts are fixedly mounted on a contactor shell, the movable contacts are capable of moving among the connected positions and the disconnected positions of the movable contacts with the fixed contacts, the movable iron core is capable of moving among the connected positions and the disconnected positions, the switching mechanism is used for connecting the movable iron core with the movable contacts so as to respond to the movement of the movable iron core among the connected positions and the disconnected positions so that the movable contacts move among the connected positions and the disconnected positions, and the tripping mechanism cooperates with the movable iron core to keep the movable contacts at the connected positions. The contactor with the switching mechanism is capable of reducing energy consumption for keeping the movable contacts at the connected positions and is low in power consumption.
Description
Technical field
The present invention relates to a kind of contactor, more particularly, relate to a kind of contactor with low-power consumption of switching mechanism.
Background technology
Contactor is the extensive Industry Control electrical equipment of a kind of use, belongs to the low-voltage electrical apparatus category, along with country to the going deep into of energy-conserving and environment-protective working dynamics, its energy consumption level more and more is subject to the attention of government department.In recent years China has put into effect relevant standard GB/T 13518-2008 " A.C. contactor efficiency limit value and efficiency grade (Minimum allowable values of energy efficiency and energy efficiency grades for AC contactors) ", the same with household electronic products, the efficiency grade of contactor is divided into 5 grades, grade numerical value is less, rank is higher, and efficiency is also just higher.So 1 grade is the low energy consumption product, encouraged research and development to produce.And 5 grades be the high energy consumption product, is limited to use and eliminates.The product of developing low energy consumption conforms to 12 planning of China, will be subject to government's approval, thereby have larger market.
At present, contactor all adopts the method for direct electromagnetic actuation to keep in touch the closure of device.Be that electromagnet need to overcome the counter-force of " cut-offfing spring " and the closure that contact pressure keeps in touch the device contact.Because the necessary contact pressure of contact closure and to cut-off the counter-force of spring all very large, thereby require electromagnet to have enough energy to keep this adhesive.The energy consumption of the desired electromagnet of this maintenance contact closure is exactly the main component of the energy consumption of contactor.This shows, the energy consumption of contactor and its counter-force of cut-offfing spring and contact pressure and positive correlation, and numerical value is very large.Exactly because this reason, the energy consumption of existing product is all larger, and it is 1 grade that the product of some specification does not have the efficiency grade.
The contactor of prior art mainly contains following two types:
Fig. 1 shows the simplification schematic diagram of the contactor of the first type.As shown in Figure 1, when electromagnet coil was switched on, moving contact 2 is quick-make and the counter-force that overcomes the contact pressure (not shown) and cut-off the spring (not shown) under the pulling of moving iron core 3, and is maintained at make position; When electromagnet coil was disconnected, moving contact 2 arrived open position fast under the double action of cut-offfing spring and touch spring.Because drive the beginning of contact closure, the electromagnet air gap is very large, need very large electric current could realize this driving, and after contact closure, electromagnet coil current still remain on this larger state, so the energy consumption of this contactor is very high.
The contactor of the second type is provided with main coil and auxiliary winding.After the user connected control circuit, the built-in electronic wiring board was to the power supply of electromagnet main coil, to realize the contact quick-make.After a few tens of milliseconds (this moment, contactor was closed), wiring board stops to transfer to auxiliary winding and powering to the main coil power supply.The least energy that this moment, electromagnet needed be cut-off the counter-force of spring and contact pressure and, so the energy consumption of this contactor is higher.In addition, this series products is because the existence of electronic circuit board, also has the defective that grid voltage quality and electromagnetic interference are had higher requirements.
Therefore, there is the high problem of energy consumption in the contactor of prior art, and the contactor of the second type is subject to the impact of line voltage distribution and electromagnetic interference, poor reliability easily.
Summary of the invention
The present invention makes in view of the problem of above-mentioned prior art, the object of the present invention is to provide a kind of contactor of low energy consumption.The present invention mainly is the method that keeps the contactor contact closure by changing, and namely keeps contact closure to change machinery into by traditional electromagnet and keeps contact closure, realize the low energy consumption of contactor.Because energy consumption level of the present invention is significantly less than existing product, it will promote the standard of existing efficiency grade effectively, makes the product that has present technique more competitive.
The present invention can keep contact closure by being provided for a kind of in electric current (exchange or the direct current) contactor, the switching mechanism that can in the situation of electromagnet dead electricity, allow contact open fast again simultaneously, thus a kind of contactor of low energy consumption is provided.
The objective of the invention is by providing a kind of contactor to be achieved, this contactor comprises: fixed contact, this fixed contact are fixedly mounted on the contactor housing; Moving contact, this moving contact are configured to can be mobile between and the position that separates closed with this fixed contact; Moving iron core, described moving iron core is configured to and can moves between attracted position and disconnected position; And switching mechanism, this switching mechanism is connected described moving iron core with described moving contact, to respond the movement of described moving iron core between attracted position and disconnected position, so that described moving contact is mobile between closure and disconnected position, described contactor also comprises tripping mechanism, this tripping mechanism is configured to cooperate mutually with described moving iron core, so that described moving contact is remained on make position.
Utilize contactor of the present invention, because in the moving contact make position, moving iron core only needs to overcome the counter-force of self back-moving spring, and therefore, the energy that moving iron core needs reduces, and thus, has reduced the required energy of whole contactor.
Description of drawings
Other purposes of the present invention, feature and industry and technical significance will be more readily understood by below in conjunction with accompanying drawing the detailed description of the specific embodiment of the present invention being become, among the figure:
Fig. 1 is the operating principle schematic diagram according to the embodiment of the contactor of prior art;
Fig. 2 A to Fig. 2 D is the operating principle schematic diagram that illustrates according to the embodiment of the contactor with switching mechanism of the present invention, Fig. 2 A illustrates moving contact and fixed contact is in the view that closes front state, Fig. 2 B illustrates moving contact and fixed contact is in closure state, and switching mechanism is in the view of trip status, Fig. 2 C illustrates moving contact and fixed contact is in closure state, and switching mechanism is in the view of hold mode, and Fig. 2 D illustrates moving contact to be in the view that separates completion status with fixed contact; And
Fig. 3 is the schematic structure chart according to the embodiment of the contactor with switching mechanism of the present invention.
Embodiment
Describe with reference to the accompanying drawings preferred implementation of the present invention in detail.
Fig. 2 A to Fig. 2 D is the operating principle schematic diagram according to the preferred implementation of the contactor with switching mechanism of the present invention, wherein Fig. 2 A illustrates the view that moving contact and fixed contact are in separated position, Fig. 2 B illustrates the view that moving contact and fixed contact closure are finished front momentary status, at this moment, moving contact and fixed contact are closed, but switching mechanism is not in hold mode, Fig. 2 C illustrates moving contact and fixed contact is in closure state, and switching mechanism is in the view of hold mode, and Fig. 2 D illustrates the view that moving contact and fixed contact are in separated position.And Fig. 3 is the schematic structure chart according to the embodiment of the contactor with switching mechanism of the present invention.
As shown in Figure 3, switching mechanism according to the present invention is made of linkage and latching device, and usually, linkage is with respect to symmetrical two groups of moving iron core 3, and still, the present invention is not limited thereto.For simplicity, the below only present invention is described take one group as example.
Can be clear that by Fig. 3, contactor according to present embodiment comprises the fixed contact 1 that is installed on the contactor housing (not shown), be arranged on the moving contact rack 13 moving contact 2 that can be closed with this fixed contact and separates, make moving contact 2 quick-makes and remain on moving iron core 3 and the switching mechanism of make position, moving iron core 3 with prior art in identical mode be arranged on the contactor housing, in order to should can move with the described moving contact 2 of open and close and fixed contact 1 with respect to this contactor housing by moving iron core 3.This switching mechanism mainly comprises linkage and latching device, and this linkage is delivered to moving contact 2 for the motion that will move iron core 3, realizes the opening and closing of moving contact 2.
As shown in Figure 3, this linkage comprises: its first end pivots with moving contact rack 13 and is connected to drive the lever 9 of moving contact rack 13 motions; With and the second end of first end and lever 9 pivot and be connected and second connecting rod 6 that its second end is connected with moving iron core 3 pivots.Wherein lever 9 can be around the 3rd axle C rotation that roughly is positioned at the intermediate position, the 3rd axle C is fixed on the contactor housing (not shown), thus, along with moving up and down of moving iron core 3, lever 9 play leverage and on carry or press down moving contact rack 13, thereby open or closed moving contact 2 and fixed contact 1.
Described tripping mechanism comprises that centering on the B axle centers on the rotating release lever 4 of the first axle A that is fixed on the contactor housing with respect to the rotating snap close 7 of contactor housing with at first end.The second end of this release lever 4 is locking end 41, and described snap close 7 is provided with locked groove 71 in the position corresponding with described locking end, and this locking end 41 can be inserted in the locked groove 71.Also be provided with first connecting rod 5, the first end of this first connecting rod 5 is connected with the second end of described lever 9 pivotly, and the second end of described first connecting rod 5 is pivotably connected to the roughly centre position of described release lever 4, thus release lever 4 is associated with described lever 9 (linkage).
Also be provided with push rod 8 on described moving iron core 3, roughly corresponding to a side of described snap close 7, rotate around the B axle in order to can promote snap close 7 position of this push rod 8.
In addition, be similar to contactor of the prior art, also be provided be used for to drive between contactor housing and the moving contact 2 moving contact 2 cut-off action cut-off spring 11 and be contained in moving contact rack 13 and moving contact 2 between touch spring 12, wherein be installed on and cut-off 11 pairs of moving contact components of spring (moving contact rack 13 (referring to Fig. 3) between contactor housing and the moving contact, moving contact 2 and touch spring 12 etc.) effect one downward power, after mechanism trips, impel the downward rapid movement of moving contact component with breaking current.Because these structures with of the prior art identical, do not repeat them here.In addition in the contactor of present embodiment, also be provided with the sensitive switch (not shown), this sensitive switch can be driven by above-mentioned arbitrary parts of mentioning, for example can be driven by the snap close 7 of the arbitrary connecting rod in the aforementioned link mechanism or tripping mechanism and release lever 4.And, comprise that also the switching between main coil and the auxiliary winding can be realized by the action of corresponding sensitive switch for the main coil (not shown) and the auxiliary winding (not shown) that drive moving iron core 3 motions.
Explain operating principle according to contactor of the present invention below with reference to Fig. 2:
At first, shown in Fig. 2 A, contactor is in off-state, at this moment, separates between moving contact 2 and the fixed contact 1.After the user connected control circuit, the main coil of electromagnet was switched on, moving contact 2 quick-make under the pulling of moving iron core 3.Specifically, moving iron core 3 moves along the downward direction among the figure, pulling second connecting rod 6 moves downward, and second connecting rod 6 is the second end of downward pull lever 9 again, thus, lever 9 rotates along clockwise direction around the 3rd axle C, the first end of lever 9 raises, and upwards promotes moving contact rack 13, thus, realize the closure of moving contact 2 and fixed contact 1, shown in Fig. 2 B.Simultaneously, when second connecting rod 6 moves downward, clockwise rotate around the first axle A via first connecting rod 5 release levers 4, and so that the locking end 41 of release lever 4 enters the locked groove 71 of snap close 7, make release lever 4, snap close 7 and the first and second connecting rods 5,6 self-lockings under the effect of cut-offfing spring counter-force (not shown) and touch spring (not shown), thus probe of contactor is remained on make position, shown in Fig. 2 C.At this moment, the sensitive switch (not shown) corresponding component triggers that is triggered, and between main coil and auxiliary winding, switch, namely, disconnect main coil, connect simultaneously the electromagnet auxiliary winding, keep moving iron core 3 and be in the attracted position to overcome the counter-force that makes the back-moving spring that iron core 3 resets.Because this moment, electromagnet only need to overcome the counter-force of back-moving spring, so the energy consumption of this contactor is very low.
Then, when needs turn-off current contactor, the auxiliary winding of electromagnet is disconnected, moving iron core 3 is the upward direction motion in the figure under the effect of moving iron core return-spring, the push rod 8 that is arranged on the moving iron core 3 promotes snap close 7, so that snap close 7 is around the B axle along moving clockwise among the figure, shown in Fig. 2 B.At this moment, the rotation of snap close 7 is so that the locking between the locking end 41 of locked groove 71 and release lever 4 is freed, and the rock-steady structure of release lever 4, snap close 7 and the first and second connecting rods 5,6 is broken.Moving contact 2 arrives open position fast under the double action of cut-offfing spring 11 and touch spring.
According to contactor of the present invention, kept by tripping mechanism in the closure of moving contact 2 and fixed contact 1, and moving 3 needs of iron core overcome the effect of himself back-moving spring, therefore, the required electric current of auxiliary winding is less, has reduced energy consumption.Simultaneously, owing to cancelled electronic circuit board, properties of product are not subjected to the impact of line voltage distribution and electromagnetic interference.
Structure and operating principle and operating process with contactor of switching mechanism of the present invention more than described, in order to verify that the contactor with switching mechanism according to the present invention has the characteristic of low energy consumption, the product of prior art and the energy consumption of the product behind application the present invention are calculated:
Contact closure confining force that the 20A A.C. contactor is required in the prior art:
The required confining force F1:12N that provides of electromagnet
Application is by the required tripping force of the A.C. contactor of the same specification of the technology of the present invention:
The required confining force F2:3N that provides of electromagnet
ξ＝F2/F1＝0.25
Rated current is larger, and then the ξ value is less, and the advantage of the technology of the present invention is more obvious.
Although describe the present invention in detail with reference to preferred implementation of the present invention in the above, but the invention is not restricted to above-mentioned embodiment, for example, in the above-described embodiment, tripping mechanism remains on make position by means of switching mechanism with moving contact, but tripping mechanism also can comprise the parts of independent setting, independently moving contact is remained on make position.In addition, in the above-described embodiment, although release lever is rotation formula, those skilled in the art also can adopt other forms of release lever, as long as can assist moving contact machinery are remained on make position.Therefore, scope of the present invention is only limited by appending claims and equivalent thereof.
Description of reference numerals
1 fixed contact
2 moving contacts
3 moving iron cores
4 release levers
5 first connecting rods
6 second connecting rods
7 snap closes
8 push rods
9 levers
10 client's terminals
11 cut-off spring
12 touch springs
13 moving contact racks
41 locking ends
71 locked grooves
Claims (13)
1. contactor comprises:
Fixed contact (1), this fixed contact are fixedly mounted on the contactor housing;
Moving contact (2), this moving contact are configured to can be mobile between and the position that separates closed with this fixed contact (1);
Moving iron core (3), described moving iron core (3) is configured to and can moves between attracted position and disconnected position; And
Switching mechanism, this switching mechanism is connected described moving iron core (3) with described moving contact (2), to respond the movement of described moving iron core (3) between attracted position and disconnected position, so that described moving contact (2) is mobile between closure and disconnected position
It is characterized in that described contactor also comprises tripping mechanism, this tripping mechanism is configured to cooperate mutually with described moving iron core (3), so that described moving contact (2) is remained on make position.
2. contactor as claimed in claim 1, it is characterized in that, described tripping mechanism comprises snap close (7) and release lever (4), and described release lever (4) can be by described snap close (7) locking, so that described moving contact (2) is remained on make position.
3. contactor as claimed in claim 2 is characterized in that, described release lever (4) has the first end that is arranged on pivotly on the contactor housing and can be by the second end of described snap close (7) locking.
4. contactor as claimed in claim 3, it is characterized in that, described snap close (7) is arranged on the described contactor housing pivotly, with at the locked position of coupler of the second end of the described release lever of locking with discharge between the unlocked position of the second end of described release lever and rotate.
5. contactor as claimed in claim 4 is characterized in that, mobile between adhesive and disconnected position in response to described moving iron core (3), described snap close (7) rotates between described locked position of coupler and unlocked position.
6. contactor as claimed in claim 5 is characterized in that, described moving iron core (3) is provided with push rod (8), and described push rod (8) promotes described snap close (7) and rotates between described locked position of coupler and unlocked position.
7. such as each described contactor in the claim 2 to 6, it is characterized in that described release lever (4) is connected with described switching mechanism, with by means of described switching mechanism, described moving contact (2) is remained on make position.
8. contactor as claimed in claim 7 is characterized in that, described switching mechanism is linkage.
9. contactor as claimed in claim 8, it is characterized in that, described switching mechanism comprises lever (9), this lever is rotatable around the pivot (C) that roughly is arranged on the centre position, described lever (9) has first end and the second end, the first end of described lever with its on described moving contact (2) are set moving contact rack (13) pivot and to be connected, and the second end of described lever (9) can pivot with described moving iron core (3) via second connecting rod (6) and is connected.
10. contactor as claimed in claim 9 is characterized in that, also comprises first connecting rod (5), the two ends of described first connecting rod (5) respectively with described release lever (4) be connected the second end of lever (9) and can pivot and be connected.
11. such as each described contactor in the claim 1 to 6, it is characterized in that, described contactor also comprise be contained between described contactor housing and the described moving contact (2) be used for driving described moving contact cut-off action cut-off spring and be contained in described contactor housing and described moving iron core (3) between for the back-moving spring that described moving iron core (3) is resetted.
12. contactor as claimed in claim 11, it is characterized in that, described contactor also comprises be used to the main coil and the auxiliary winding that drive described moving iron core (3) motion, and described main coil is powered so that described moving iron core (3) overcomes described counter-force of cut-offfing spring and back-moving spring moves to the attracted position from disconnected position; Described auxiliary winding is powered so that described moving iron core (3) overcomes the counter-force of described back-moving spring and remains on the attracted position.
13. contactor as claimed in claim 11, it is characterized in that, described contactor also comprises sensitive switch, described sensitive switch is driven by in described switching mechanism, described tripping mechanism and the described moving iron core any, to described main coil power supply with to the switching between the auxiliary winding power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110211480.2A CN102903577B (en) | 2011-07-27 | 2011-07-27 | Contactor with switching mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110211480.2A CN102903577B (en) | 2011-07-27 | 2011-07-27 | Contactor with switching mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102903577A true CN102903577A (en) | 2013-01-30 |
| CN102903577B CN102903577B (en) | 2017-04-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110211480.2A Active CN102903577B (en) | 2011-07-27 | 2011-07-27 | Contactor with switching mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102903577B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103295846A (en) * | 2012-02-28 | 2013-09-11 | 施耐德电器工业公司 | Current contactor with switching mechanism |
| CN104021994A (en) * | 2014-06-26 | 2014-09-03 | 国网上海市电力公司 | Switch-on contactor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000215777A (en) * | 1999-01-22 | 2000-08-04 | Mitsubishi Electric Corp | Power switch |
| CN101494136A (en) * | 2009-03-09 | 2009-07-29 | 沈阳斯沃电器有限公司 | Self-locking device for contactor |
| CN101740267A (en) * | 2008-11-13 | 2010-06-16 | 郑春开 | Electromagnetic switch with lock mechanism |
| CN201556573U (en) * | 2009-12-21 | 2010-08-18 | 浙江欣大继电器有限公司 | General-purpose relay |
| CN101986409A (en) * | 2010-11-19 | 2011-03-16 | 山东卓尔电气有限公司 | Central latching electromagnetic straight operating alternating-current contactor |
| CN202259055U (en) * | 2011-07-27 | 2012-05-30 | 施耐德电器工业公司 | Current contactor |
-
2011
- 2011-07-27 CN CN201110211480.2A patent/CN102903577B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000215777A (en) * | 1999-01-22 | 2000-08-04 | Mitsubishi Electric Corp | Power switch |
| CN101740267A (en) * | 2008-11-13 | 2010-06-16 | 郑春开 | Electromagnetic switch with lock mechanism |
| CN101494136A (en) * | 2009-03-09 | 2009-07-29 | 沈阳斯沃电器有限公司 | Self-locking device for contactor |
| CN201556573U (en) * | 2009-12-21 | 2010-08-18 | 浙江欣大继电器有限公司 | General-purpose relay |
| CN101986409A (en) * | 2010-11-19 | 2011-03-16 | 山东卓尔电气有限公司 | Central latching electromagnetic straight operating alternating-current contactor |
| CN202259055U (en) * | 2011-07-27 | 2012-05-30 | 施耐德电器工业公司 | Current contactor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103295846A (en) * | 2012-02-28 | 2013-09-11 | 施耐德电器工业公司 | Current contactor with switching mechanism |
| CN104021994A (en) * | 2014-06-26 | 2014-09-03 | 国网上海市电力公司 | Switch-on contactor |
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| Publication number | Publication date |
|---|---|
| CN102903577B (en) | 2017-04-12 |
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