CN101101819A - Automatic change-over switch - Google Patents
Automatic change-over switch Download PDFInfo
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- CN101101819A CN101101819A CNA200710070224XA CN200710070224A CN101101819A CN 101101819 A CN101101819 A CN 101101819A CN A200710070224X A CNA200710070224X A CN A200710070224XA CN 200710070224 A CN200710070224 A CN 200710070224A CN 101101819 A CN101101819 A CN 101101819A
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- contact
- connecting rod
- automatic change
- over
- bridge
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Abstract
The invention is concerned with the auto-change-over switch, includes: the isolating switch, the electro-motion operating mechanism, and the first coupler that connects the electro-motion operating mechanism. The isolating switch is with: the foundation, the enclosure, the power supply contact board and the load contact board set on the foundation, both are with fixed contacts, the contact system bridge, the actuating agencies, and the linkage devices. In contrast with the switch blade structure, the invention has more advantages, as: the linkage devices lead the contact system bridge's longitudinal movement that switching the activity fixed contact speedily, and the procreant electronic arc is highly absorbable, which it improves the lifetime of the auto-change-over switch. The invention also includes the lock-in device with the bound piece and the reset spring, which ensures the right press of the contact, improves the capacity of connecting and breaking.
Description
Technical field
The present invention relates to electric switch, is a kind of automatic change-over specifically.
Background technology
Automatic change-over is used for electric power system can be avoided trouble power to power to the load when main electricity breaks down, can reliably select qualified power supply normal operation input again, uninterrupted to guarantee power supply.The place of general outbalance, for example hospital, airport, harbour all rely on automatic change-over that continuous power supply is provided, and automatic change-over has a plurality of disconnections or closed contact usually.
Automatic change-over requires to have certain connection and breaking capacity, the power supply of transferring fast again usually when power failure occurring.One of common structure that adopts of the contact system of automatic change-over is the blade type structure in the prior art, moving contact is upper and lower double-deck blade, when the switching power supply, be that dynamic and static contact knife CONTACT WITH FRICTION disconnects, be difficult to guarantee the quick acting switching-off when disconnecting, to cause serious harm to dynamic and static contact like this, thus the life-span of reducing change over switch.
Summary of the invention
What the present invention will solve is the problems referred to above that prior art exists, and purpose provides a kind of improved automatic change-over, and it can improve the connection and the breaking capacity of change over switch effectively.
Another object of the present invention provides a kind of automatic change-over with lock function, and it can guarantee the quick acting switching-off of automatic change-over effectively.
The technical scheme that addresses the above problem employing is: automatic change-over, comprise isolating switch, motor-operating mechanism and first connecting rod, and described first connecting rod one end links to each other with motor-operating mechanism, it is characterized in that described isolating switch comprises:
---a base and a shell;
---be arranged on power supply contact plate with fixed contact and load contact plate on the base with fixed contact;
---a bridge contact system, comprise strutting piece and at least one contact bridge that is arranged on the described strutting piece, have the moving contact of the relative configuration of a pair of and described fixed contact on described each contact bridge, described strutting piece is arranged in the cannelure of offering on the base, also is provided with draw-in groove on it;
---an actuating mechanism, comprise telescopic rod, energy-stored spring and second connecting rod, described telescopic rod and second connecting rod are coupling respectively on shell, and the other end of its free end and first connecting rod is coupling; Described energy-stored spring is sleeved on the telescopic rod;
---a linkage has a projection that cooperates with draw-in groove, a combined floodgate drive surface and a separating brake drive surface.
The present invention is with respect to the superiority of blade type Structure Conversion switch: adopt bridge-type moving contact system, drive the lengthwise movement of bridge-type moving contact system by linkage, make the quick break-make in sound contact, and the arc energy that produces is effectively absorbed, thereby the life-span of having improved automatic change-over.
As a further improvement on the present invention, described automatic change-over also is provided with and comprises a locking device of placing restrictions on a part and a back-moving spring, described limited part is installed in rotation on the pillar of shell, one end is connected with back-moving spring, the other end has second lock face that matches with first lock face of linkage, and a release lever that matches with the arm of second connecting rod.The highly effective pressure that guarantees contact of locking device makes to connect with breaking capacity to be enhanced, thus the life-span of further having improved automatic change-over.Described pillar is positioned on the center line of described strutting piece.The counter-force direction that is arranged so that buffer spring is like this passed through pillar.Described limited part offers deep-slotted chip breaker, and described shell is provided with alignment pin with matching.Like this, the rotational angle of limited part is limited in the deep-slotted chip breaker.
Further improve as of the present invention, the contact bridge of described bridge contact system is provided with in the installing hole of offering on the described strutting piece, also is provided with buffer spring therebetween.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is the structural representation of automatic change-over of the present invention.
Fig. 2 is in the schematic diagram of closing position for isolating switch.
Fig. 3 is an isolating switch separating brake process schematic diagram.
Fig. 4 is in the schematic diagram of separating brake position for isolating switch.
Fig. 5 is the bridge contact system schematic.
Fig. 6 is the linkage schematic diagram.
Embodiment
With reference to Fig. 1,5,6, automatic change-over of the present invention comprises 2,6, motor-operating mechanisms 5 of the two poles of the earth isolating switch and first connecting rod 3, and described first connecting rod 3 one ends link to each other with motor-operating mechanism 5.Described each isolating switch 2,6 comprises base 21, shell 10, bridge contact system 9, actuating mechanism 15, linkage 27, second connecting rod 26 and locking device 32. Isolating switch 2,6 links together by pressing plate 1, screw rod 8 and strutting piece 4.
Vertically be provided with 4 pairs of power supply contact plates 20 and load contact plate 24 on the described base 21 side by side, the every pair of power supply contact plate 20 and load contact plate 24 split in the both sides of base 21, and its medial end has a fixed contact 22 and fixed contact 23 respectively.
Described bridge contact system 9 comprises strutting piece 35 and is arranged on 4 contact bridges 18 on the described strutting piece 35, has the moving contact 19,25 of a pair of and described fixed contact 22,23 relative configurations on described each contact bridge 18.Offer the installing hole 43 of 4 lateral direction penetratings on the described strutting piece 35, each contact bridge 18 is separately positioned in the corresponding installing hole 43, leaves the space between installing hole 43 and the contact bridge 18, between buffer spring 34 is installed.Offer the draw-in groove 33 that cooperates with linkage in the middle part of strutting piece 35.Described strutting piece 35 is list structure, is arranged in the cannelure of offering on the base 21 29.
An actuating mechanism 15 comprises telescopic rod 40, energy-stored spring 14 and second connecting rod 26, and described telescopic rod 40 and second connecting rod 26 are coupling respectively on shell 10, and the other end of its free end and first connecting rod 3 is coupling; Described energy-stored spring 14 is sleeved on the telescopic rod 40.
Described linkage 27 is "T"-shaped structure, has a projection that cooperates with draw-in groove 33 38, combined floodgate drive surface 36, a separating brake drive surface 37 and first lock face 16.
Described locking device 32 comprises that one is placed restrictions on part 13 and a back-moving spring 12, and described product 13 is installed in rotation on the pillar 11 of shell 10, and described pillar 11 is positioned on the center line A-A of described strutting piece 35.The counter-force direction that is arranged so that buffer spring 34 like this is by pillar 11.One end of limited part 13 is connected with an end of back-moving spring 12, and the other end has second lock face 17 that matches with first lock face 16 of linkage 27, and a release lever 30 that matches with the arm 28 of second connecting rod 26.The other end of back-moving spring 12 is fixed on the shell 10.When isolating switch was in gate-dividing state, limited part 13 was subjected to the compacting of linkage 27 to make back-moving spring 12 be in the energy storage state.Also offering on the described limited part 13 with a pillar 11 is the deep-slotted chip breaker 42 in the center of circle, and described shell 10 is provided with alignment pin 31 with matching.Like this, the rotational angle of limited part 13 is limited in the deep-slotted chip breaker 42.
Between described combined floodgate drive surface 36 and separating brake drive surface 37, be provided with a projection (not looking out among the figure), be used for promoting linkage 27 upper and lower motions, finish combined floodgate or separating brake action thereby drive promotion bridge contact system 9.This projection can be parts of actuating mechanism 15, also can be parts on the first connecting rod 3, perhaps directly is the axle 41 of expansion link 40, second connecting rod 26 and first connecting rod 3 handing-over.
With reference to Fig. 4, isolating switch 2 is in the separating brake position.Motor-operating mechanism 5 drives actuating mechanism 15 compressed energy-storage springs 14 by first connecting rod 3, when actuating mechanism 15 compressed energy-storage springs 14 arrive centre position (just usually said " dead point " position), energy-stored spring 14 energy discharge, actuating mechanism 15 accelerated motions, axle 41 promote combined floodgate drive surface 36 motions of linkage 27.Thereby make linkage 27 promote bridge contact system 9 and make rectilinear motion upwards, realize the combined floodgate of isolating switch 2 along A-A.At this moment, because linkage 27 has been removed the compacting to limited part 13, so limited part 13 rotation in the counterclockwise direction under the effect of back-moving spring 12, make second lock face 17 cooperate the locking that realizes contact system 9 with first lock face 16, as shown in Figure 2.
With reference to figure 2, Fig. 3, isolating switch 2 is in closing position, current direction is the direction of arrow, the buffer spring 34 of bridge contact system 9 has guaranteed isolating switch 2 contact pressures, simultaneously, because the relation of active force and reaction force, buffer spring 34 has one group of counter-force to bridge contact system 9 again, and direction is by pillar 11.When realizing separating brake, motor-operating mechanism 5 drives actuating mechanism 15 compressed energy-storage springs 14 by connecting rod 3, at this moment the actuating mechanism 15 combined floodgate drive surface 36 of just having left linkage 27 moves downward, bridge contact system 9 is subjected to the counter-force of self buffer spring 34, will certainly produce the trend that moving contact 19,22 and fixed contact were opened in 25,23 minutes, but, make to have the fixed pressure contact between moving contact 19,22 and the fixed contact 25,23 all the time because second lock face 17 of locking device 32 pins first lock face 16 of linkage 27 firmly.When actuating mechanism 15 compressed energy-storage springs 14 arrive (just usually said " dead point " position, centre position, referring to Fig. 3) time, it is maximum that energy-stored spring 14 energy storage reach, actuating mechanism 15 continues motion, energy-stored spring 14 energy discharge, actuating mechanism 15 accelerated motions, at this moment the arm 28 of the second connecting rod 26 of actuating mechanism 15 promotes the release lever 30 of locking device 32, make locking device 32 show direction of arrow rotation to Fig. 3, second lock face 17 separates with first lock face 16 of linkage 27, and the separating brake drive surface 37 that actuating mechanism 15 promotes linkage 27 realizes isolating switch 2 separating brakes.The compacting that linkage 27 is realized limited part 13.
What should be understood that is: the foregoing description is just to explanation of the present invention, rather than limitation of the present invention, and any innovation and creation that do not exceed in the connotation scope of the present invention all fall within protection scope of the present invention.
Claims (5)
1, automatic change-over comprises isolating switch (2,6), motor-operating mechanism (5) and first connecting rod (3), and described first connecting rod (3) one ends link to each other with motor-operating mechanism (5), it is characterized in that described isolating switch (2,6) comprising:
---a base (21) and a shell (10);
---be arranged on the power supply contact plate (20) on the base (21) and have the load contact plate (24) of fixed contact (23) with fixed contact (22);
---a bridge contact system (9), comprise strutting piece (35) and be arranged at least one contact bridge (18) on the described strutting piece (35), the moving contact (19,25) that has the relative configuration of a pair of and described fixed contact (22,23) on described each contact bridge (18), described strutting piece (35) is arranged in the cannelure of offering on the base (21) (29), also is provided with draw-in groove (33) on it;
---an actuating mechanism (15), comprise telescopic rod (40), energy-stored spring (14) and second connecting rod (26), described telescopic rod (40) and second connecting rod (26) are coupling respectively on shell (10), and the other end of its free end and first connecting rod (3) is coupling; Described energy-stored spring (14) is sleeved on the telescopic rod (40);
---a linkage (27) has the projection (38) that cooperates with draw-in groove (33), a combined floodgate drive surface (36) and a separating brake drive surface (37).
2, automatic change-over as claimed in claim 1, it is characterized in that also being provided with and comprise a locking device (32) of placing restrictions on a part (13) and a back-moving spring (12), described limited part (13) is installed in rotation on the pillar (11) of shell (10), one end is connected with back-moving spring (12), the other end has second lock face (17) that matches with first lock face (16) of linkage (27), and a release lever (30) that matches with the arm (28) of second connecting rod (26).
3, automatic change-over as claimed in claim 2 is characterized in that described pillar (11) is positioned on the center line (A-A) of described strutting piece (35).
4, automatic change-over as claimed in claim 3 is characterized in that described limited part (13) offers deep-slotted chip breaker (42), and described shell (10) is provided with alignment pin with matching (31).
5, as any one described automatic change-over of claim 1-4, it is characterized in that the contact bridge (18) of described bridge contact system (9) is provided with in the installing hole of offering on the described strutting piece (35) (43), also be provided with buffer spring (34) therebetween.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710070224A CN100587873C (en) | 2007-07-27 | 2007-07-27 | Automatic change-over switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710070224A CN100587873C (en) | 2007-07-27 | 2007-07-27 | Automatic change-over switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101101819A true CN101101819A (en) | 2008-01-09 |
| CN100587873C CN100587873C (en) | 2010-02-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710070224A Active CN100587873C (en) | 2007-07-27 | 2007-07-27 | Automatic change-over switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100587873C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102047370A (en) * | 2008-06-05 | 2011-05-04 | 黑格电子股份有限公司 | Electric selective automatic switch |
| CN102496506A (en) * | 2011-11-24 | 2012-06-13 | 天津市百利电气有限公司 | Automatic changeover switch with short arcing time |
| WO2017031663A1 (en) * | 2015-08-24 | 2017-03-02 | 尚勤贵 | Centrifugal switch and brushless liquid-resistance electric motor starter with same |
| CN109461609A (en) * | 2018-12-12 | 2019-03-12 | 扬州新菱电器有限公司 | A kind of double power supply automatic transfer switch with zero curve overlapping conversion function |
-
2007
- 2007-07-27 CN CN200710070224A patent/CN100587873C/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102047370A (en) * | 2008-06-05 | 2011-05-04 | 黑格电子股份有限公司 | Electric selective automatic switch |
| CN102047370B (en) * | 2008-06-05 | 2013-10-30 | 黑格电子股份有限公司 | Electric selective automatic switch |
| CN102496506A (en) * | 2011-11-24 | 2012-06-13 | 天津市百利电气有限公司 | Automatic changeover switch with short arcing time |
| WO2017031663A1 (en) * | 2015-08-24 | 2017-03-02 | 尚勤贵 | Centrifugal switch and brushless liquid-resistance electric motor starter with same |
| CN109461609A (en) * | 2018-12-12 | 2019-03-12 | 扬州新菱电器有限公司 | A kind of double power supply automatic transfer switch with zero curve overlapping conversion function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100587873C (en) | 2010-02-03 |
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Application publication date: 20080109 Assignee: Wenzhou Zhengtai Electrical Technology Co., Ltd Assignor: Zhejiang Chint Electrics Co.,Ltd. Contract record no.: X2020330000078 Denomination of invention: Automatic change-over switch Granted publication date: 20100203 License type: Common License Record date: 20201021 |
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