CN201966051U - Strip-type excitation-free tap switch with gear positioning - Google Patents
Strip-type excitation-free tap switch with gear positioning Download PDFInfo
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- CN201966051U CN201966051U CN2011200370710U CN201120037071U CN201966051U CN 201966051 U CN201966051 U CN 201966051U CN 2011200370710 U CN2011200370710 U CN 2011200370710U CN 201120037071 U CN201120037071 U CN 201120037071U CN 201966051 U CN201966051 U CN 201966051U
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- driving shaft
- moving contact
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Abstract
The utility model provides a strip-type excitation-free tap switch with gear positioning. The technical problems to be solved are as follows: due to errors existing in machining and assembly of parts, the displacement of a rack and accurate in-place of a moving contact can not be ensured when a handle is rotated, whether in-place is achieved can not be known, and the condition that the operation of the moving contact is not in place can easily occur so that accidents of burning contacts and the like can be caused. The essential of the strip-type excitation-free tap switch is as follows: a blind hole is arranged on a bracket, and a spring and a positioning bead are sequentially installed in the blind hole from inside to outside; a positioning gear and a driving shaft are coaxial, the positioning gear is in a wave shape, and the positioning bead falls into the wave trough of the positioning gear to be positioned when an external force does not exist; and the distance between two adjacent wave troughs of the positioning gear corresponds to the position of a switch contact. The strip-type excitation-free tap switch with gear positioning has the beneficial effects that when the handle is rotated, the accurate in-plate of the moving contact is ensured, and the hand feel is very strong, therefore, the accidents of burning contacts and the like caused by the condition that the operation of the moving contact is not in place can be avoided.
Description
Technical field
The utility model relates to a kind of strip-like non-excitation tapping switch, is a kind of strip-like non-excitation tapping switch with gear detent mechanism specifically.
Background technology
Strip-like non-excitation tapping switch is the tap-change device of Transformer Winding, promptly the different parts in Transformer Winding is provided with shunting tap, changes the position of shunting tap, changes the number of turn of its Transformer Winding, thereby reach the pressure regulation effect that causes voltage fluctuation because of load variations, stablize line voltage.The strip-shape tap switch that uses is at present, and (referring to Fig. 1) is provided with position fixing handle 1 on top, and the handle bottom connects driving shaft 2, and driving shaft is coaxial with driven wheel 4,5 engagements of driving gear wheel and rack, and several moving contacts are arranged on the tooth bar.By rotary handle, drive driving shaft, driven wheel, tooth bar and moving contact successively, the realization moving contact is opened and is closed with different fixed contacts, changes the position of shunting tap.Because parts processing exists error and assembling to have error, can not guarantee that when rotary handle the displacement of tooth bar and moving contact accurately put in place, also can't know whether to put in place, it is not in place to occur the moving contact operation easily, causes accidents such as contact burning.
Summary of the invention
For solving the problems of the technologies described above, the purpose of this utility model is to provide a kind of strip-like non-excitation tapping switch with gear location that can avoid above-mentioned deficiency.
The purpose of this utility model is achieved in that it comprises handle, driving shaft and support, and driving shaft is coaxial with gear shaft, and driving gear wheel and rack engagement is characterized in that: establish blind hole on support, shock mount and positioning bead successively from the inside to the outside in the blind hole; Positioning Gear is coaxial with driving shaft, and said Positioning Gear is meant this tooth undulate, and the trough place that positioning bead falls into Positioning Gear during no external force is positioned, and crest is lower than the radius of positioning bead; The distance of adjacent two troughs of Positioning Gear is corresponding with switch contact position (moving contact moves the distance between two fixed contacts).Gear of such trough definition, they are marked on the handle.When the needs diverter switch, rotary handle, driven wheel and Positioning Gear rotate simultaneously, drive tooth bar and do rectilinear motion, the crest of Positioning Gear makes in the positioning bead extrusion spring and contracts simultaneously, and after Positioning Gear continuation rotation, its crest turned over positioning bead, positioning bead slipped into trough rapidly under the effect of spring, make the driving gear drives tooth bar move corresponding position, positioning bead is locked in this trough when no external force simultaneously.
Compared with prior art, the beneficial effects of the utility model are: guarantee that when rotary handle moving contact accurately puts in place, and feel is extremely strong, can avoids causing because of the moving contact operation is not in place accidents such as contact burning.
Description of drawings
Further specify the utility model below in conjunction with accompanying drawing.
Fig. 1 is existing strip-like non-excitation tapping switch schematic diagram.
Fig. 2 is a structural representation of the present utility model.
Fig. 3 is the profile of Fig. 2 along the A-A line.
Embodiment
Referring to Fig. 2, it comprises handle 1, driving shaft 2 and support 3, and driving shaft is coaxial with 4 of driven wheels, and driving gear wheel and rack 5 engagement is established blind hole on support 3, shock mount 6 and positioning bead 7 successively from the inside to the outside in the blind hole; Positioning Gear 8 is coaxial with driving shaft 2, the said coaxial axle of Positioning Gear that is meant is rigidly connected with the driving shaft diaxon, perhaps driving shaft also is the axle of Positioning Gear, present embodiment be driving shaft simultaneously as 8 of 4 of driven wheels and Positioning Gears, and Positioning Gear 8 is descending the two to be structure as a whole at last, driven wheel 4.Referring to Fig. 3, said Positioning Gear is meant this tooth undulate, and trough 10 places that positioning bead falls into Positioning Gear during no external force are positioned, and crest is lower than the radius of positioning bead, and present embodiment is established seven troughs and seven crests 9 altogether; The pass by distance of adjacent two troughs of positioning bead is corresponding with switch contact position (moving contact moves the distance between two fixed contacts).Gear of such trough definition, a gear is marked on the handle 1 arbitrarily.When the needs diverter switch, rotary handle, driven wheel and Positioning Gear rotate simultaneously, drive tooth bar and do rectilinear motion, the crest of Positioning Gear makes in the positioning bead extrusion spring and contracts simultaneously, and after Positioning Gear continuation rotation, its crest turned over positioning bead, positioning bead slipped into trough rapidly under the effect of spring, make the driving gear drives tooth bar move corresponding position, positioning bead is locked in this trough when no external force simultaneously.
The difference that forms the radius of the radius of trough circular arc line and positioning bead on the Positioning Gear preferably is more or less the same, and such as within 0.5mm the time, locating effect and feel are best.
Claims (2)
1. one kind has the strip-like non-excitation tapping switch that gear is located, it comprises handle, driving shaft and support, and driving shaft is coaxial with gear shaft, the engagement of driving gear wheel and rack, it is characterized in that: on support, establish blind hole, shock mount and positioning bead successively from the inside to the outside in the blind hole; Positioning Gear is coaxial with driving shaft, and said Positioning Gear is meant this tooth undulate, and the trough place that positioning bead falls into Positioning Gear during no external force is positioned, and crest is lower than the radius of positioning bead; The distance of adjacent two troughs of Positioning Gear is corresponding with the switch contact position.
2. according to the described strip-like non-excitation tapping switch of claim 1 with gear location, it is characterized in that: said driving shaft, gear shaft and positioning tooth wheel shaft are coaxial, be meant driving shaft simultaneously as gear shaft and positioning tooth wheel shaft, and Positioning Gear is descending the two to be structure as a whole at last, driven wheel; The tooth undulate of Positioning Gear specifically is seven troughs and seven crests.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200370710U CN201966051U (en) | 2011-02-12 | 2011-02-12 | Strip-type excitation-free tap switch with gear positioning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200370710U CN201966051U (en) | 2011-02-12 | 2011-02-12 | Strip-type excitation-free tap switch with gear positioning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201966051U true CN201966051U (en) | 2011-09-07 |
Family
ID=44528604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200370710U Expired - Fee Related CN201966051U (en) | 2011-02-12 | 2011-02-12 | Strip-type excitation-free tap switch with gear positioning |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201966051U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102169751A (en) * | 2011-02-12 | 2011-08-31 | 辽宁金立电力电器有限公司 | Bar-shaped no-excitation tap switch with gear positioning |
-
2011
- 2011-02-12 CN CN2011200370710U patent/CN201966051U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102169751A (en) * | 2011-02-12 | 2011-08-31 | 辽宁金立电力电器有限公司 | Bar-shaped no-excitation tap switch with gear positioning |
| CN102169751B (en) * | 2011-02-12 | 2012-08-22 | 辽宁金立电力电器有限公司 | Bar-shaped no-excitation tap switch with gear positioning |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110907 Termination date: 20140212 |