CN107731580A - Automatic transfer switching electric appliance and its contact assembly - Google Patents
Automatic transfer switching electric appliance and its contact assembly Download PDFInfo
- Publication number
- CN107731580A CN107731580A CN201710868053.9A CN201710868053A CN107731580A CN 107731580 A CN107731580 A CN 107731580A CN 201710868053 A CN201710868053 A CN 201710868053A CN 107731580 A CN107731580 A CN 107731580A
- Authority
- CN
- China
- Prior art keywords
- contact
- electric appliance
- automatic transfer
- transfer switching
- switching electric
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/0005—Tap change devices
- H01H9/0016—Contact arrangements for tap changers
Landscapes
- Keying Circuit Devices (AREA)
- Elimination Of Static Electricity (AREA)
Abstract
The present invention relates to the contact assembly of automatic transfer switching electric appliance, including moving contact, static contact.Moving contact includes two conducting strips being arranged side by side, and the clamping device for allowing two conducting strips to keep clamp position；The inner side that one end two of two conducting strips is relative is respectively equipped with conductive contact, leaves gap between two conductive contacts, is caught in for static contact, conducting is contacted with conductive contact.The contact surface of moving contact and static contact has two sides, increase the contact area and rubbing surface between contact, dynamic/static contact is in divide-shut brake, pass through the transverse shifting friction self purification of dynamic/static contact, oxide layer and the filth of contact surface can be removed, contact resistance is maintained at extremely low level in the service life of whole product.Meanwhile dynamic/static contact rigid connection touch when without spring, improve electrical contact endurance, because two panels moving contact flows through electric current in the same direction, produce the electric power to attract each other, can effectively offset the repulsion between dynamic/static contact, contact is born the ability of short circuit current and greatly improve.
Description
Technical field
The present invention relates to automatic transfer switching electric appliance field, more specifically to a kind of automatic transfer switching electric appliance and
Its contact assembly.
Background technology
Automatic transfer switching electric appliance is a kind of common low-voltage electrical apparatus, is usually used in important distribution occasion, for two-way power supply
Switching, when ensureing that commonly using power supply in power supply process breaks down, switch to stand-by power supply rapidly, proof load end it is normal
Power supply.
PC levels automatic transfer switching electric appliance is often required that the conversion of two-way power supply can be completed, can turn on and carry and be short-circuit electric
Stream, rather than disjunction short circuit current, the short-circuit protection of its own and whole load circuit are the short-circuit protection electricity by front end
Device (SCPD：Breaker or fuse) come what is completed.
Therefore, PC levels automatic transfer switching electric appliance more focuses on reliability under normal use, and certain time
The ability of interior transfer switching equipment carrying short-circuit current rush, specific requirement are low-temperature-rise, larger specified limiting short-circuit current
With specified KA Rms etc., and melting welding does not occur after short-circuit current rush is carried.
Existing PC levels automatic transfer switching electric appliance is frequently with clapper-type contact, although structure is simple, during division
Without self purification, due to the oxidation of contact surface silver-coated layer after long-term use, cause contact resistance larger, temperature rise, reduction is opened
The service life of pass；Clapper-type contact system moving contact easily bounces when being touched with static contact rigid connection, and the starting the arc burns out contact；Together
When carrying short circuit current within a certain period of time, due to the electrodynamic repulsion force between contact causes contact pressure to reduce, contact not
It is stable, easily cause contact melting welding and arc burning, damage electrical equipment, can not meet modernization power supply-distribution system especially mix it is negative
Carry the demand of power supply occasion.
The content of the invention
The technical problem to be solved in the present invention is, there is provided a kind of improved automatic transfer switching electric appliance and its sets of contacts
Part.
The technical solution adopted for the present invention to solve the technical problems is：Construct a kind of contact of automatic transfer switching electric appliance
Component, including moving contact, static contact；
The moving contact includes two conducting strips being arranged side by side, and the folder for allowing two conducting strips to keep clamp position
Hold mechanism；
The inner side that one end two of two conducting strips is relative is respectively equipped with conductive contact, is left between two conductive contacts
Gap, it is caught in for the static contact, conducting is contacted with the conductive contact.
Preferably, the clamping device includes two support members set respectively in the opposite side of the conducting strip two,
To lift the intensity of two conducting strips.
Preferably, the clamping device also includes shell fragment and clip, and the shell fragment includes two, is separately positioned on described in two
The phase dorsal part of support member, the clamp connection allow the shell fragment to provide elastic force and keep two conductions between two shell fragments
Piece is close to clamping.
Preferably, the clip takes the shape of the letter U, and the both ends of the clip are clamped in the phase dorsal part of two shell fragments respectively.
Preferably, it is respectively equipped with extension on the edge of two support members, the extension on each support member
Portion is extended from the side of the conducting strip to another support member；
The extension on two support members is oppositely arranged, and each extension is provided with to be caught in for the clip
Neck.
Preferably, the shell fragment is provided with the inner groovy for clip positioning, described in the inner groovy to place side
Support member deformation bending.
Preferably, the conductive contact is silver alloy contact, and the static contact includes copper body and at described copper
The silver coating set is plated in vitro.
Preferably, the moving contact also includes connector and bearing pin, and the connector is provided with spliced eye, for the conduction
Piece and clamping device are worn, and the bearing pin wears the connector, clamping device and conducting strip, by the connector, clamping machine
Structure connects positioning with conducting strip；
The connector is rotatably arranged with driving the conducting strip, clamping device to swing, realize with the static contact
Conducting, separation.
Preferably, the both sides of the connector are respectively equipped with the pinion mounting holes of depression and raised travelling gear, with
After the connector connection, the connector is driven to rotate, pivot center direction of two conducting strips along the connector
Arrangement.
The present invention also constructs a kind of automatic transfer switching electric appliance, including described contact assembly.
Implement the automatic transfer switching electric appliance and its contact assembly of the present invention, have the advantages that：The present invention's is dynamic
The contact surface of contact and static contact has two sides, increases contact area and rubbing surface between contact, the sound of transfer switching equipment
Contact is rubbed self purification in divide-shut brake by the transverse shifting of dynamic/static contact, can remove contact surface oxide layer and
Filth, contact resistance is set to be maintained at extremely low level in the service life of whole product.
Meanwhile electrical contact endurance is improved, simultaneously because two panels moving contact without spring when moving contact and tactile static contact rigid connection
Electric current in the same direction is flowed through, produces the electric power to attract each other, the repulsion between moving contact and static contact can be effectively offset, make contact
The ability for bearing short circuit current greatly improves, and can have larger KA Rms ability and limiting short-circuit current ability.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing：
Fig. 1 is the dimensional structure diagram of the contact assembly of the automatic transfer switching electric appliance in the embodiment of the present invention；
Fig. 2 is the connector of the moving contact in Fig. 1 and structural representation when conducting strip, clamping device decomposition；
Structural representation when Fig. 3 is the conducting strip of the moving contact in Fig. 2, clamping device decomposes；
Structural representation when Fig. 4 is conducting strip and support member assembling in Fig. 2.
Embodiment
In order to which technical characteristic, purpose and the effect of the present invention is more clearly understood, now compares accompanying drawing and describe in detail
The embodiment of the present invention.
As shown in figure 1, the automatic transfer switching electric appliance in a preferred embodiment of the invention includes contact assembly 1, contact
Component 1 includes moving contact 11, static contact 12.
With reference to shown in Fig. 2 to Fig. 3, moving contact 11 includes two conducting strips 111 being arranged side by side, and allows two conducting strips
111 keep the clamping device 112 of clamp position.The inner side that one end two of two conducting strips 111 is relative is respectively equipped with conductive contact
1111, gap is left between two conductive contacts 1111, is caught in for static contact 12, conducting is contacted with conductive contact 1111.Moving contact
11 are used as clipping moving contact 11, and static contact 12 is as blade static contact 12.
The contact surface of moving contact 11 and static contact 12 has two sides, increases contact area and rubbing surface between contact, changes
The dynamic/static contact 12 of device for switching, by the transverse shifting friction self purification of dynamic/static contact 12, can remove in divide-shut brake
The oxide layer of contact surface and filth, contact resistance is set to be maintained at extremely low level in the service life of whole product.
Meanwhile electrical contact endurance is improved, simultaneously because two panels is moved without spring when moving contact 11 and the tactile rigid connection of static contact 12
Contact 11 flows through electric current in the same direction, produces the electric power to attract each other, can effectively offset between moving contact 11 and static contact 12
Repulsion, contact is born the ability of short circuit current and greatly improve.
Further, conductive contact 1111 is silver alloy contact, and static contact 12 is external including copper body and at copper
Plate the silver coating set.Using the silver alloy contact on conducting strip 111 and the different pair relationhip of the material of blade type static contact 12,
Make the probability of melting welding during the super-high-current of contact position reduce.
Silver alloy contact is welded on conducting strip 111, also can by other closures by silver alloy contact portion in conduction
On piece 111.Silver alloy contact is V-shaped, and V-arrangement opening is opposite with static contact 12, can utilize opening by moving contact 11, static contact
The impurity such as powder scrapes caused by 12 frictions, plays self purification.
The automatic transfer switching electric appliance of the present invention can have larger KA Rms ability and limiting short-circuit current energy
Power, in other embodiments, it is directly copper material that the surface of conductive contact 1111, which is alternatively silver coating or conductive contact 1111,
Matter, silver alloy, it is directly copper material or silver alloy that static contact 12, which is alternatively,.
Clamping device 112 includes two support members 1121 set respectively in 111 liang of opposite sides of conducting strip, with lifting
The intensity of two conducting strips 111.There is the intensity that support member 1121 ensures conducting strip 111, when can be lifted at clamping static contact 12
Clamping dynamics, ensure moving contact 11 be provided simultaneously with good electric conductivity and mechanical strength.
Further, clamping device 112 also includes shell fragment 1122 and clip 1123.Shell fragment 1122 includes two, sets respectively
Put the phase dorsal part in two support members 1121.Clip 1123 is connected between two shell fragments 1122, is provided support for shell fragment 1122, is allowed bullet
Piece 1122 provides elastic force and keeps two conducting strips 111 close to clamping.The shape of shell fragment 1122 can not limit, and can be installed to support
After being clamped on part 1121 or conducting strip 111 and by clip 1123, there is provided elastic force keeps two conducting strips 111 close by static contact 12
Clamp.
In certain embodiments, clip 1123 takes the shape of the letter U, and the both ends of clip 1123 are clamped in the opposite of two shell fragments 1122 respectively
Side.In order to ensure that the position of clip 1123 is not allowed to be also easy to produce skew, shell fragment 1122 is provided with the inner groovy positioned for clip 1123
1124, inner groovy 1124 deforms bending to the support member 1121 of place side, is caught in for clip 1123.In other embodiments, block
Hoop 1123 or the structure of closing, set are set to outside shell fragment 1122.
Further, it is respectively equipped with extension 1125 on the edge of two support members 1121, prolonging on each support member 1121
Extending portion 1125 is extended from the side of conducting strip 111 to another support member 1121.Extension 1125 on two support members 1121
It is oppositely arranged, each extension 1125 is provided with the neck 1126 being caught in for clip 1123.
The restriction that neck 1126 and inner groovy 1124 has been located of clip 1123, position is more stable, also ensure that
The chucking power of clamping device 112 is stable.In other embodiments, clip 1123 also can be only by neck 1126, inner groovy 1124
One positioned to position, or by other location structures.
In certain embodiments, moving contact 11 also includes connector 113 and bearing pin 114, and connector 113 connects with external agency
Connect, band follower link 113 allows conducting strip 111 and the synchronous hunting of clamping device 112 when rotating, so as to ensure the action of moving contact 11
It is unified.
Connector 113 is provided with spliced eye 1131, is worn for conducting strip 111 and clamping device 112, the one end of conducting strip 111
Conductive contact 1111 stretch out spliced eye 1131, be caught in connection for static contact 12.Bearing pin 114 wears connector 113, clamping device
112 and conducting strip 111, connector 113, clamping device 112 and conducting strip 111 are connected into positioning, an entirety is formed, is connecting
Part 113 allows each part of moving contact 11 to be synchronized with the movement when rotating.
Further, connector 113 rotatably arranged with, drive conducting strip 111, clamping device 112 to swing, realize with it is quiet
Conducting, the separation of contact 12.
The both sides of connector 113 are respectively equipped with the pinion mounting holes 1132 of depression and raised travelling gear 1133, outside
After mechanism is connected with connector 113, band follower link 113 rotates, pivot center side of two conducting strips 111 along connector 113
To arrangement.
External agency is rotated by pinion mounting holes 1132 and the passing power of travelling gear 1133, drive moving contact 11, from
And realize the divide-shut brake of dynamic/static contact 12.
Binding post 13 is provided with outside moving contact 11, is connected, led by wire 14 between binding post 13 and conducting strip 111
Line 14 is annealed copper strand wire, and both ends are soldered to binding post 13 and conducting strip 111.
It is to be appreciated that above-mentioned each technical characteristic can be used in any combination and unrestricted.
Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair
The equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (10)
- A kind of 1. contact assembly of automatic transfer switching electric appliance（1）, it is characterised in that including moving contact（11）, static contact（12）；The moving contact（11）Including two conducting strips being arranged side by side（111）, and allow two conducting strips（111）Retaining clip Hold the clamping device of state（112）；Two conducting strips（111）The relative inner side in one end two be respectively equipped with conductive contact（1111）, two conductive contacts （1111）Between leave gap, for the static contact（12）It is caught in, with the conductive contact（1111）Contact conducting.
- 2. the contact assembly of automatic transfer switching electric appliance according to claim 1（1）, it is characterised in that the clamping machine Structure（112）Including respectively in the conducting strip（111）Two support members that two opposite sides are set（1121）, to lift two institutes State conducting strip（111）Intensity.
- 3. the contact assembly of automatic transfer switching electric appliance according to claim 2（1）, it is characterised in that the clamping machine Structure（112）Also include shell fragment（1122）And clip（1123）, the shell fragment（1122）Including two, two branch are separately positioned on Support member（1121）Phase dorsal part, the clip（1123）It is connected to two shell fragments（1122）Between, allow the shell fragment（1122） Elastic force is provided and keeps two conducting strips（111）Close to clamping.
- 4. the contact assembly of automatic transfer switching electric appliance according to claim 3（1）, it is characterised in that the clip （1123）Take the shape of the letter U, the clip（1123）Both ends be clamped in two shell fragments respectively（1122）Phase dorsal part.
- 5. the contact assembly of automatic transfer switching electric appliance according to claim 4（1）, it is characterised in that two supports Part（1121）Edge on be respectively equipped with extension（1125）, each support member（1121）On the extension（1125） By the conducting strip（111）Side to another support member（1121）It is extended；Two support members（1121）On the extension（1125）It is oppositely arranged, each extension（1125）It is provided with For the clip（1123）The neck being caught in（1126）.
- 6. the contact assembly of automatic transfer switching electric appliance according to claim 3（1）, it is characterised in that the shell fragment （1122）It is provided with and supplies the clip（1123）The inner groovy of positioning（1124）, the inner groovy（1124）To described in the side of place Support member（1121）Deformation bending.
- 7. the contact assembly of automatic transfer switching electric appliance according to claim 1（1）, it is characterised in that it is described conductive tactile Point（1111）For silver alloy contact, the static contact（12）In vitro plate including copper body and at described copper the silver plating set Layer.
- 8. the contact assembly of the automatic transfer switching electric appliance according to any one of claim 1 to 7（1）, it is characterised in that institute State moving contact（11）Also include connector（113）And bearing pin（114）, the connector（113）It is provided with spliced eye（1131）, supply The conducting strip（111）And clamping device（112）Wear, the bearing pin（114）Wear the connector（113）, clamping device （112）And conducting strip（111）, by the connector（113）, clamping device（112）And conducting strip（111）Connection positioning；The connector（113）Rotatably arranged with driving the conducting strip（111）, clamping device（112）Swing, realize with The static contact（12）Conducting, separation.
- 9. the contact assembly of automatic transfer switching electric appliance according to claim 8（1）, it is characterised in that the connector （113）Both sides be respectively equipped with the pinion mounting holes of depression（1132）With the travelling gear of projection（1133）, with the connection Part（113）After connection, the connector is driven（113）Rotate, two conducting strips（111）Along the connector（113）'s Arrange in pivot center direction.
- 10. a kind of automatic transfer switching electric appliance, it is characterised in that including the contact assembly described in any one of claim 1 to 9 （1）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710868053.9A CN107731580B (en) | 2017-09-22 | 2017-09-22 | Automatic change-over switch electrical apparatus and contact assembly thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710868053.9A CN107731580B (en) | 2017-09-22 | 2017-09-22 | Automatic change-over switch electrical apparatus and contact assembly thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107731580A true CN107731580A (en) | 2018-02-23 |
| CN107731580B CN107731580B (en) | 2020-04-28 |
Family
ID=61206813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710868053.9A Active CN107731580B (en) | 2017-09-22 | 2017-09-22 | Automatic change-over switch electrical apparatus and contact assembly thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107731580B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108878185A (en) * | 2018-06-05 | 2018-11-23 | 深圳市泰永电气科技有限公司 | Two section automatic transfer switching electric appliances |
| CN109755046A (en) * | 2019-01-15 | 2019-05-14 | 浙江正泰电器股份有限公司 | The contact system of static contact and automatic change-over |
| CN112133584A (en) * | 2020-10-15 | 2020-12-25 | 施耐德万高（天津）电气设备有限公司 | Rotary plug-in contact |
| CN114220677A (en) * | 2021-12-30 | 2022-03-22 | 雷顿电气科技有限公司 | Automatic change-over switch electric appliance |
| CN117492575A (en) * | 2024-01-03 | 2024-02-02 | 凯晖科技股份有限公司 | Ultrathin and foldable TP touch keyboard |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2340079Y (en) * | 1998-09-08 | 1999-09-22 | 武进市新苑电力配件厂 | Probe for connector of main circuit |
| WO2002080206A2 (en) * | 2001-03-30 | 2002-10-10 | Grupo Ormazabal, S.A. | Contact blade block for medium-voltage short-circuit switches |
| CN104269293A (en) * | 2014-10-11 | 2015-01-07 | 成都瑞联电气股份有限公司 | Universal conversion switch with magnetic quenching function |
| CN104335311A (en) * | 2012-06-11 | 2015-02-04 | Abb有限公司 | Electric current switching apparatus |
| CN206401190U (en) * | 2016-11-17 | 2017-08-11 | 武汉长海电气科技开发有限公司 | The structure of contact terminal and disconnecting switch of grafting form |
-
2017
- 2017-09-22 CN CN201710868053.9A patent/CN107731580B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2340079Y (en) * | 1998-09-08 | 1999-09-22 | 武进市新苑电力配件厂 | Probe for connector of main circuit |
| WO2002080206A2 (en) * | 2001-03-30 | 2002-10-10 | Grupo Ormazabal, S.A. | Contact blade block for medium-voltage short-circuit switches |
| CN104335311A (en) * | 2012-06-11 | 2015-02-04 | Abb有限公司 | Electric current switching apparatus |
| CN104269293A (en) * | 2014-10-11 | 2015-01-07 | 成都瑞联电气股份有限公司 | Universal conversion switch with magnetic quenching function |
| CN206401190U (en) * | 2016-11-17 | 2017-08-11 | 武汉长海电气科技开发有限公司 | The structure of contact terminal and disconnecting switch of grafting form |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108878185A (en) * | 2018-06-05 | 2018-11-23 | 深圳市泰永电气科技有限公司 | Two section automatic transfer switching electric appliances |
| CN109755046A (en) * | 2019-01-15 | 2019-05-14 | 浙江正泰电器股份有限公司 | The contact system of static contact and automatic change-over |
| CN109755046B (en) * | 2019-01-15 | 2024-10-01 | 浙江正泰电器股份有限公司 | Contact system of static contact and automatic change-over switch |
| CN112133584A (en) * | 2020-10-15 | 2020-12-25 | 施耐德万高（天津）电气设备有限公司 | Rotary plug-in contact |
| CN112133584B (en) * | 2020-10-15 | 2023-03-31 | 施耐德万高（天津）电气设备有限公司 | Rotary plug-in contact |
| CN114220677A (en) * | 2021-12-30 | 2022-03-22 | 雷顿电气科技有限公司 | Automatic change-over switch electric appliance |
| CN117492575A (en) * | 2024-01-03 | 2024-02-02 | 凯晖科技股份有限公司 | Ultrathin and foldable TP touch keyboard |
| CN117492575B (en) * | 2024-01-03 | 2024-03-08 | 凯晖科技股份有限公司 | Ultrathin and foldable TP touch keyboard |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107731580B (en) | 2020-04-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107731580A (en) | Automatic transfer switching electric appliance and its contact assembly | |
| CN103971955B (en) | The contact assembly of parallel connection switching switch | |
| WO2017186061A1 (en) | Circuit breaker contact system and circuit breaker | |
| CN104704591B (en) | Switching device | |
| CN102044388B (en) | Static contact structure of moulded case circuit breaker | |
| CN104157490A (en) | High-voltage direct current contactor contact system | |
| CN202796775U (en) | Electricity fetching device of circuit board | |
| CN105244233A (en) | Moving contact push mechanism of magnetic latching relay | |
| CN101645374B (en) | Device for connecting moving contact of breaker | |
| CN203521342U (en) | Contact system of breaker | |
| CN102891020A (en) | Low voltage isolation switch device | |
| CN209266341U (en) | A kind of dynamic contact mechanism of dual-interruption point breaker | |
| CN201788917U (en) | Contact device for N pole incapable of extinguishing arc | |
| CN104201074A (en) | Energy-saving miniature circuit breaker | |
| CN104715974B (en) | Electric contactor and method, limitation or the method for preventing contact trembling and arcing time for controlling its contact timing closing and opening | |
| CN208690117U (en) | A kind of structure of contact terminal | |
| CN207338255U (en) | Galvanic circle with electric power compensation function | |
| CN103531409A (en) | Contact system of circuit breaker | |
| CN209461393U (en) | A kind of plug-in switch module for miniature circuit breaker | |
| CN210245380U (en) | Heavy-current double-break isolating switch for electrified railway | |
| CN208848775U (en) | A kind of twin-power switch incoming line structure | |
| CN205621610U (en) | Isolation switch moving contact's electrical connection structure | |
| CN201017828Y (en) | Magnetic holding relay with grid-plate | |
| CN101017740A (en) | Magnetism keeping relay with the bar | |
| CN207938479U (en) | A kind of online circuit switching device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |