CN202711977U - Load switcher used for tap switch of adjustable transformer - Google Patents
Load switcher used for tap switch of adjustable transformer Download PDFInfo
- Publication number
- CN202711977U CN202711977U CN 201220174690 CN201220174690U CN202711977U CN 202711977 U CN202711977 U CN 202711977U CN 201220174690 CN201220174690 CN 201220174690 CN 201220174690 U CN201220174690 U CN 201220174690U CN 202711977 U CN202711977 U CN 202711977U
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- China
- Prior art keywords
- contact
- main contacts
- switch
- activity
- lasting
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- 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.)
- Expired - Lifetime
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- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
Abstract
The utility model relates to a load switcher used for a tap switch of an adjustable transformer, which comprises fixed and mobile main contacts arranged in a fan shape, auxiliary contacts, and fixed and mobile continued contacts arranged beside the main contacts. According to the utility model, the load switcher of the above type is improved in the following way, that is, each mobile continued contact can be swingably supported at the adjacent mobile main contact, and can be connected with a rotary switch fixed at the switch shaft via a pressure plate which can swing around the shaft of the continued contacts.
Description
Technical field
The utility model relates to a kind of load switch of the shunting switch for adjustable transformer, and it has main contacts and auxiliary contact fixing and activity that fan-shaped arranges, and has the lasting contact fixing and activity that is arranged on the main contacts next door.At this, the task of this lasting contact is, accepts load current under the inactive state of load switch, and other contact of the load switch that therefore gets loose.
Background technology
In this load switch, movable lasting contact is the same with other armature contact of load switch mechanically to be connected in an identical manner, and its control is carried out at the switch shaft place by the rotary type switch usually.But, for the lasting contact in the open stage, between fixed and movable contact block, only produce very little path at this.For the corresponding lasting contact of being connected safely, be necessary for the control of movable lasting contact application self complexity, because must irrespectively connect lasting contact with the main contacts melting loss.
The utility model content
According to the utility model, the load switch of the above-mentioned type improves in the following manner, be the main contacts place that the lasting contact of each activity is bearing in adjacent activity swingably, and via linking to each other with the rotary type switch that is fixed in the switch shaft place round the pressing plate that the axle that continues the place, contact swing.At this advantageously, movable lasting contact is provided with crooked plug-in unit, and it is fixed on movable main contacts place swingably.In addition advantageously, the contact-making surface with the lasting contact of activity is configured to round the circular arc of the axle that continues the place, contact.
The utility model provides a kind of load switch of the shunting switch for adjustable transformer, it has fixing and main contacts and auxiliary contact activity that fan-shaped arranges, and has a lasting contact fixing and activity that is arranged on main contacts next door, it is characterized in that, the lasting contact of each activity is bearing in the main contacts place of adjacent activity swingably, and via linking to each other with the rotary type switch that is fixed in the switch shaft place round the pressing plate that the axis that continues the place, contact swings.
Alternatively, movable lasting contact is provided with crooked plug-in unit, and described plug-in unit is fixed on the main contacts place of described activity swingably.
Alternatively, the contact-making surface of the lasting contact of described activity is configured to round the circular arc of the axle that continues the contact.
Alternatively, the described pressing plate of the lasting contact of described activity is can swing but immovably be fixed on described rotary type switch place, but but the described pressing plate of the main contacts of described activity and auxiliary contact swingably and resilient movement be fixed on the one or more other rotary type switch place of described switch shaft.
Alternatively, be used for the point of rotation of the described pressing plate of described lasting contact, and the point of rotation that is used for the described pressing plate of described main contacts and auxiliary contact, arrange round described switch axis with different big or small circular arcs.
According to another favourable form of implementation, the pressing plate of movable lasting contact is can swing but immovably be fixed on rotary type switch place, but but the pressing plate of movable main contacts and auxiliary contact swingably and resilient movement be fixed in the one or more other rotary type switch of switch axis.At this, be used for to continue the point of rotation of pressing plate of contact and the point of rotation that is used for the pressing plate of main contacts and auxiliary contact and preferably arrange round the switch axis with different big or small circular arcs.
By the form of implementation according to load switch of the present utility model, in the simple structure of contact, can realize the each other spacing of larger, quick generation of safer switch flow process and lasting contact.Continue the contact and controlled with the speed transmission ratio by main contacts (it directly links to each other with lasting contact), wherein continue the contact and before main contacts, open respectively, and after main contacts, close, thereby guarantee that the no current that continues the contact switches.In addition, continue the contact radially, marginal motion is to have nothing to do with the main contacts melting loss for the turn-on time point, the thus main contacts control of lasting contact.
Description of drawings
Be described in the drawings embodiment of the present utility model, it has the load switch of the contact bridge of being with the dual interruption that is useful on single switch.Wherein:
Fig. 1 has illustrated the load switch in the section I-I according to Fig. 3;
Fig. 2 has illustrated lasting contact and main contacts from the view according to the hatching line II-II of Fig. 1;
The load switch of the phase place that Fig. 3 sees from the top; And
Main contacts and lasting contact at the end position of closing that Fig. 4 sees from the top.
Embodiment
Fixing main contacts 11,12, fixing auxiliary contact 13 and fixing lasting contact 14 flexibly are fixed on columniform insulation shell 10 places.Movable main contacts 21,2 and movable auxiliary contact 23 up with the radial indent 24 of the guide plate 25 of below in guiding.At this, fixing above and below main contacts 11,12 or fixing above and below auxiliary contact 13 main contacts and the auxiliary contact 21,22 of the motion by being configured to contact bridge link up respectively.
The pressing plate 26 of main contacts and auxiliary contact 21,22,23 contact bridge two rotary type switches 27 by being fixed on switch axis 28 places is controlled.At this, the pressing plate 26 in the rotary type switch 27 is bearing in the longitudinal hole 30 of rotary type switch by bolt 29, and by compression spring 31 bufferings.
The lasting contact 34 that is configured to equally the activity of contact bridge is provided with crooked plug-in unit 35, and is bearing in swingably main contacts 21 or 22 places of adjacent activity by axle 36.The contact-making surface of mobilizable lasting contact 34 is configured to the circular arc around axle 37, and the contact-making surface of fixing lasting contact 14 is smooth.Pressing plate 38 is fixed on these axle 37 places that continue contact 34 swingably, and this pressing plate 38 can swing by its second end, but immovably is fixed on rotary type switch 40 places by axle 39.This rotary type switch 40 is positioned on the switch shaft 28 equally.Be used for continuing the point of rotation (axle 39) of pressing plate 38 of contact 34 and the point of rotation (axle 29) that is used for main contacts and auxiliary contact 21,22,23 pressing plate 26 arranges round switch shaft 28 with different big or small circular arcs.By these measures in conjunction with spring 31, main contacts and auxiliary contact 21,22,23 pressing plate are fixed on rotary type switch 27 places, before main contacts 11,12 or 12,22, open respectively so that continue contact 14,34, or after main contacts 11,12 or 12,22, close.
The handoff procedure of load switch is described below: when switch shaft 2 when the clockwise direction by Fig. 3 rotates, rotary type switch 10 and pressing plate 38 by therewith rotation, that close, movable lasting contact 34 swings round the axle 36 on the main contacts of activity, and therefore can be raised by fixing lasting contact.Movable main contacts 21 at first also keeps posture at itself and the fixing contact position of main contacts 11 because rotary type switch 27 when rotating resilient axis 29 at first in longitudinal opening, move to end position always.Main contacts remains closed for a long time, until connect the first auxiliary contact 13,23.Along with main contacts 11,21 unlatching, continue contact 34 and open farther sooner than movable main contacts 21, and when the whole finishing switching of load switch, arrive at end position shown in Figure 4.At this, the spacing under opening between movable lasting contact 34 and the fixing lasting contact 14 is obviously greater than movable main contacts 21 and the fixing spacing between the main contacts 11.
When melting loss appears in main contacts 11,12 or 12,22, can not change whatever during in its motion beginning on the connection path of the lasting contact of activity, because it is constant that the spacing from the switch axis centre to contact (between 34, the 14) position that continues the contact keeps, distribute as the circular arc round axle 37 because continue the contact-making surface of contact 34.
Claims (5)
1. load switch that is used for the shunting switch of adjustable transformer, it has fixing and main contacts and auxiliary contact activity that fan-shaped arranges, and has a lasting contact fixing and activity that is arranged on main contacts next door, it is characterized in that, the lasting contact (34) of each activity is bearing in swingably the main contacts (21 or 22) of adjacent activity and locates, and via the pressing plate (38) that can swing round the axis (37) that continues the place, contact be fixed in the rotary type switch (40) that switch shaft (28) locates and link to each other.
2. load switch according to claim 1 is characterized in that, movable lasting contact (34) is provided with crooked plug-in unit (35), and described plug-in unit is fixed on swingably the main contacts (14) of described activity and locates.
3. load switch according to claim 1 and 2 is characterized in that, the contact-making surface of the lasting contact (34) of described activity is configured to round the circular arc of the axle (37) that continues the contact.
4. load switch according to claim 1 and 2, it is characterized in that, the described pressing plate (38) of the lasting contact (34) of described activity is can swing but immovably be fixed on described rotary type switch (40) to locate, but the described pressing plate (26) of the main contacts of described activity and auxiliary contact (21,22,23) but swingably and resilient movement be fixed on described switch shaft (28) one or more other rotary type switch (27) locate.
5. load switch according to claim 1 and 2, it is characterized in that, the point of rotation (39) that is used for the described pressing plate (38) of described lasting contact (34), and the point of rotation (29) that is used for the described pressing plate (26) of described main contacts and auxiliary contact (21,22,23), arrange round described switch axis (28) with different big or small circular arcs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220174690 CN202711977U (en) | 2012-04-23 | 2012-04-23 | Load switcher used for tap switch of adjustable transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220174690 CN202711977U (en) | 2012-04-23 | 2012-04-23 | Load switcher used for tap switch of adjustable transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202711977U true CN202711977U (en) | 2013-01-30 |
Family
ID=47592256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220174690 Expired - Lifetime CN202711977U (en) | 2012-04-23 | 2012-04-23 | Load switcher used for tap switch of adjustable transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202711977U (en) |
-
2012
- 2012-04-23 CN CN 201220174690 patent/CN202711977U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130130 |
|
| CX01 | Expiry of patent term |