CN100399693C - Centrifugal hammer anti-escape device of centrifugal switch for single-phase induction dynamo - Google Patents
Centrifugal hammer anti-escape device of centrifugal switch for single-phase induction dynamo Download PDFInfo
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- CN100399693C CN100399693C CNB031443648A CN03144364A CN100399693C CN 100399693 C CN100399693 C CN 100399693C CN B031443648 A CNB031443648 A CN B031443648A CN 03144364 A CN03144364 A CN 03144364A CN 100399693 C CN100399693 C CN 100399693C
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Abstract
The present invention relates to a centrifugal hammer anti-disengagement device of a centrifugal switch for a single-phase induction machine, which comprises a rotating axis, an axis sleeve, a sliding block and a centrifugal hammer, wherein the axis sleeve can be integrally and rotationally combined with the rotating axis; simultaneously, the axis sleeve is provided with a guide rail extending outwards along the radius direction; when the sliding block and the axis sleeve are integrally and rotationally combined, the sliding block moves correspondingly to the axis sleeve along the axial direction of the rotating axis; thereby, a starting switch is switched on or off. One side of the centrifugal hammer is provided with a containing groove of a guide rail, and the containing groove slides along the guide rail; the other side of the centrifugal hammer can be combined with the sliding block in a relative motion mode. When the rotating axis rotates, the sliding block and the axis sleeve can slide along the axial direction of the rotating axis. The present invention is characterized in that a centrifugal hammer anti-disengagement protrusion for preventing the centrifugal hammer disengaging is protuberantly formed on the axis sleeve; the centrifugal hammer anti-disengagement protrusion locks a guide rail groove at the guide rail tail end of guide rail groove which guides the centrifugal hammer to move along the length direction of the guide rail for preventing the centrifugal hammer from disengaging. The present invention is used for preventing the centrifugal hammer of the centrifugal switch from disengaging from the guide rail of a guiding centrifugal hammer.
Description
Technical field
The centrifugal hammer that the present invention relates to a kind of centrifugal switch for single-phase induced motor prevents release unit.
Background technology
In general, motor is the device that converts electric energy to mechanical energy, and according to using power supply roughly to be divided into direct current machine and alternating current machine, above-mentioned alternating current machine can be subdivided into induction machine and synchronous machine and commutator machine etc. again.
Above-mentioned induction machine is divided into three-phase induction motor and single phase induction motor.Though single phase induction motor is simple in structure and firm, become more readily available single phase poaer supply, and be widely used on home-use, office the drive motors with, industrial and agriculture electrical appliance, but above-mentioned single phase induction motor can not start automatically, and possess and be useful on the main coil that produces starting torque and have the ancillary coil or the actuating coil of phasic difference with main coil, possess on the common above-mentioned ancillary coil centrifugal switch is arranged, said centrifugal switch reaches 70 of synchronizing speed～80% o'clock in the rotary speed of rotor, and above-mentioned ancillary coil is changed the road to main coil.
Fig. 1 is so that Fig. 7 is the structure chart of existing centrifugal switch for single-phase induced motor.Wherein, Fig. 1 is the side view of existing centrifugal switch for single-phase induced motor.Fig. 2 is the end view drawing of existing II-II line.Fig. 3 is the front elevation of existing axle sleeve.Fig. 4 is the plane graph of existing axle sleeve.Fig. 5 is the side view of existing centrifugal hammer.Fig. 6 is the structure chart of the preceding state of centrifugal hammer work of existing centrifugal switch for single-phase induced motor.Fig. 7 is the structure chart of state after the centrifugal hammer work of existing centrifugal switch for single-phase induced motor.
As shown in the figure, above-mentioned centrifugal switch for single-phase induced motor comprises axle sleeve 20, slide block 30, a pair of centrifugal hammer 40 and a dual spring 50 substantially.Above-mentioned axle sleeve 20 rotatable one are combined on the rotating shaft 10 of single phase induction motor; When but above-mentioned slide block 30 rotates with above-mentioned axle sleeve 20 one, correspondingly slide mobilely with above-mentioned axle sleeve 20, operate to the above-mentioned starting switch 60 of main coil making the ancillary coil of above-mentioned single phase induction motor change the road along the axis direction of rotating shaft 10; But be combined on the above-mentioned slide block 30 to a side relative motion of above-mentioned a pair of centrifugal hammer 40, the centrifugal force when rotating by above-mentioned rotating shaft 10 is rotated motion, and above-mentioned slide block 30 is correspondingly moved along axis direction with above-mentioned axle sleeve 20; The two ends of above-mentioned spring 50 are combined in respectively on the above-mentioned a pair of centrifugal hammer 40, apply elastic force towards above-mentioned a pair of centrifugal hammer 40 mutual approaching directions.
Above-mentioned axle sleeve 20 comprises cylindrical portion 21 and guide rail 23 and timber 22 substantially.Above-mentioned cylindrical portion 21 forms drum, and inside can be accommodated in conjunction with above-mentioned rotating shaft 10; Above-mentioned guide rail 23 prolongs along two side directions of above-mentioned cylindrical portion 21, is used for the above-mentioned centrifugal hammer 40 of sliding guidance; Above-mentioned timber 22 is formed on the two sides of above-mentioned cylindrical portion 21 highlightedly along the length direction of above-mentioned cylindrical portion 21, slides when making above-mentioned slide block 30 one rotation and moves.
Above-mentioned guide rail 23 is made of guide supporting portion 24 and semicircle guide rail jut 25 and guide supporting portion 26.Above-mentioned semicircle guide rail jut 25 is along outstanding the formation in the above of length of above-mentioned guide supporting portion 24.
Above-mentioned slide block 30 comprises the axle collar 32 (COLLAR) and the centrifugal hammer accepting groove 34 of cylinder body 31 and enlarged-diameter portion substantially.Alongst be formed with timber accepting groove 33 on the inner peripheral surface of above-mentioned cylinder body 31, but above-mentioned timber accepting groove 33 makes the outside of above-mentioned cylinder body 31 relative motions in above-mentioned cylindrical portion 21; The axle collar 32 of above-mentioned enlarged-diameter portion contacts with the working lever 61 of above-mentioned starting switch 60 at an end of above-mentioned body 31, opens and closes above-mentioned starting switch 60; Above-mentioned centrifugal hammer accepting groove 34 is arranged on the both sides of above-mentioned body 31, and along the axis direction of above-mentioned rotating shaft 10 opening laterally sidewards, but make the relative motion ground, a side field of above-mentioned centrifugal hammer 40 accommodate combination.
Above-mentioned centrifugal hammer 40 is made of horizontal part 41 and vertical component effect 42 and two sidepieces 43.Above-mentioned horizontal part 41 forms side by side with the above-mentioned axle collar 32; Above-mentioned vertical component effect 42 and above-mentioned horizontal part 41 vertical formation; Above-mentioned two sidepieces 43 almost form triangle.
One side of above-mentioned sidepiece 43 is formed with spring support portion 44 respectively, and above-mentioned spring support portion 44 makes each end of above-mentioned spring 50 can carry out the combination support from above-mentioned horizontal part 41 outstanding bendings; Above-mentioned vertical component effect 42 is provided with guide rail accepting groove 45, and above-mentioned guide rail accepting groove 45 can run through above-mentioned guide rail 23 and carry out combination.
Above-mentioned guide rail accepting groove 45 comprises dimetric support portion accepting groove 46 and semicircular jut accepting groove 47.Above-mentioned dimetric support portion accepting groove 46 is used to accommodate above-mentioned guide supporting portion 24; Above-mentioned semicircular jut accepting groove 47 prolongs at a side periphery of above-mentioned support portion accepting groove 46, is used to accommodate above-mentioned guide rail jut 25.
By said structure, when stopping above-mentioned rotating shaft 10, above-mentioned centrifugal hammer 40 is positioned at the original position of above-mentioned rotating shaft 10 adjacency under the resilient force of above-mentioned spring 50; Above-mentioned slide block 30 is arranged on the guide rail 23 relative positions far away with above-mentioned axle sleeve 20.At this moment, the working lever 61 of above-mentioned starting switch 60 is positioned on starting (STARTING) position that power supply can be supplied to ancillary coil, and in this state, if power supply is imposed on main coil and ancillary coil, above-mentioned rotating shaft 10 will be rotated.
The rotary speed of above-mentioned rotating shaft 10 reaches 70～80% rotary speed of synchronizing speed, the centrifugal force that then acts on above-mentioned centrifugal hammer 40 will be bigger than the expansion force of above-mentioned spring 50, above-mentioned centrifugal hammer 40 is moved laterally along above-mentioned guide rail 23, move to guide rail 23 ends of above-mentioned axle sleeve 20 simultaneously along the axis direction of above-mentioned rotating shaft 10 with the slide block 30 of above-mentioned centrifugal hammer 40 relative motions, make the above-mentioned working lever 61 of the above-mentioned axle collar 32 pressurizations start starting switch, make power supply change the road to main coil, continue the above-mentioned rotating shaft 10 of rotation by above-mentioned main coil from ancillary coil.
But the existing centrifugal switch for single-phase induced motor with said structure but has following problem points.
That is to say, above-mentioned centrifugal hammer 40 moves along above-mentioned guide rail 23 by centrifugal force, and each centrifugal hammer is positioned on guide rail 23 lines and when crossing the elastic force of resiliently mounted spring 50, above-mentioned centrifugal hammer 40 will come from above-mentioned guide rail 23 terminal ejections, fail to start centrifugal switch 60 also can damaged parts.
Summary of the invention
For overcoming the deficiencies in the prior art, the centrifugal hammer that the purpose of this invention is to provide centrifugal switch for single-phase induced motor prevents release unit, prevents because the centrifugal force of transition makes centrifugal hammer break away from from the guide rail of guiding centrifugal hammer.
The centrifugal hammer that the invention provides the centrifugal switch for single-phase induced motor with following structure prevents release unit, comprising: rotating shaft, axle sleeve, slide block and centrifugal hammer; But above-mentioned axle sleeve one is combined on the above-mentioned rotating shaft rotatably, is provided with simultaneously along radial direction and carries out guide rail extended towards the outside; When above-mentioned slide block combined with above-mentioned axle sleeve one rotation, above-mentioned slide block opened and closed starting switch along the axis direction and the above-mentioned axle sleeve relative motion of above-mentioned rotating shaft; One side of above-mentioned centrifugal hammer is provided with the guide rail accepting groove that slides along above-mentioned guide rail, but be combined on the above-mentioned slide block to the opposite side relative motion, when above-mentioned rotating shaft is rotated, above-mentioned slide block and above-mentioned axle sleeve are slided along the axis direction of above-mentioned rotating shaft, it is characterized in that, be formed with highlightedly on the above-mentioned axle sleeve and prevent that the centrifugal hammer that above-mentioned centrifugal hammer breaks away from from preventing to break away from projection, above-mentioned centrifugal hammer prevents to break away from projection being formed with along the above-mentioned guide-track groove of the terminal locking of guide rail of the guide-track groove of rail length direction guiding centrifugal hammer, prevents the disengaging of above-mentioned centrifugal hammer.
Described centrifugal hammer prevent to break away from projection from the bottom surface of described guide-track groove to the top to forming certain inclination angle, make thickness obtain increasing.
Described centrifugal hammer prevents to break away from the projection outstanding formation higher than the side height of described guide rail.
Centrifugal hammer according to centrifugal switch for single-phase induced motor of the present invention prevents that release unit has following effect:
Because being formed with centrifugal hammer on axle sleeve highlightedly prevents to break away from projection, and at the terminal locking guide-track groove of the guide rail of guide-track groove, thereby can prevent the disengaging of centrifugal hammer, and allow centrifugal switch smoothly work the time, prevent because the disengaging of centrifugal hammer causes the internal part breakage of single phase induction motor.
Description of drawings
Fig. 1 is the side view of existing centrifugal switch for single-phase induced motor.
Fig. 2 is the end view drawing of existing II-II line.
Fig. 3 is the front elevation of existing axle sleeve.
Fig. 4 is the plane graph of existing axle sleeve.
Fig. 5 is the side view of existing centrifugal hammer.
Fig. 6 is the structure chart of the preceding state of centrifugal hammer work of existing centrifugal switch for single-phase induced motor.
Fig. 7 is the structure chart of state after the centrifugal hammer work of existing centrifugal switch for single-phase induced motor.
Fig. 8 is the side view of the centrifugal switch for single-phase induced motor of one embodiment of the invention.
Fig. 9 is the positive end view drawing of the part of axle sleeve of the present invention.
Figure 10 is the partial plan of axle sleeve of the present invention.
Figure 11 is the side view of centrifugal hammer of the present invention.
Figure 12 is that the part of the centrifugal hammer secure bond state of centrifugal switch for single-phase induced motor of the present invention enlarges oblique view, and as Figure of abstract.
Figure 13 is that the part of Figure 12 enlarges oblique view.
Figure 14 or Figure 15 are single phase induction motor of the present invention prevents release unit with centrifugal hammer variant embodiment structure charts.
The major part symbol description of drawing
10: rotating shaft 30: slide block (SLIDER)
50: spring 60: starting switch
61: working lever 120: axle sleeve (SLEEVE)
123: guide rail 124: guide supporting portion
125: guide-track groove 126,126 ', 126 ": centrifugal hammer prevents to break away from projection
140: centrifugal hammer 145: the guide rail accepting groove
146: support portion accepting groove 147: the guide rail projection
Embodiment
Further specify the present invention below in conjunction with drawings and Examples.
Fig. 8 is the side view of the centrifugal switch for single-phase induced motor of one embodiment of the invention.Fig. 9 is the positive end view drawing of the part of axle sleeve of the present invention.Figure 10 is the partial plan of axle sleeve of the present invention.Figure 11 is the side view of centrifugal hammer of the present invention.Figure 12 is that the part of the centrifugal hammer secure bond state of centrifugal switch for single-phase induced motor of the present invention enlarges oblique view.Figure 13 is that the part of Figure 12 enlarges oblique view.
As shown in the figure, the centrifugal switch for single-phase induced motor of one embodiment of the invention comprises axle sleeve 120, slide block 30, a pair of centrifugal hammer 140 and a dual spring 50 substantially.But above-mentioned axle sleeve 120 one are combined on the rotating shaft 10 rotatably, and possess and have along the outstanding guide rail 123 of the radial direction of above-mentioned rotating shaft 10; When above-mentioned slide block 30 can be rotated with above-mentioned axle sleeve 120 one, be attached at slidably on the above-mentioned axle sleeve 120 along the axis direction of above-mentioned rotating shaft 10; But be combined on the above-mentioned slide block 30 to a side relative motion of above-mentioned a pair of centrifugal hammer 140, opposite side carries out combination slidably along above-mentioned guide rail 23; The two ends of above-mentioned spring 50 are combined in respectively on the above-mentioned centrifugal hammer 140, apply make above-mentioned centrifugal hammer 140 can be mutually elastic force closely.
Above-mentioned centrifugal hammer 140 is made of horizontal part 141 and vertical component effect 142 and two sidepieces 143.Above-mentioned horizontal part 141 is arranged side by side with the above-mentioned axle collar 132 and forms; Above-mentioned vertical component effect 142 forms with above-mentioned horizontal part 141 vertical settings; Above-mentioned two sidepieces 143 almost form triangle.
Be formed with spring support portion 144 respectively on the above-mentioned sidepiece 143, above-mentioned spring support portion 144 is outstanding and crooked from above-mentioned horizontal part 141, each end that makes above-mentioned spring 150 in conjunction with and be supported on a side of above-mentioned spring support portion 144; Above-mentioned vertical component effect 142 is provided with guide rail accepting groove 145, and the guide rail 123 that above-mentioned guide rail accepting groove 145 can run through above-mentioned axle sleeve 120 carries out combination.
Above-mentioned guide rail accepting groove 145 comprises dimetric support portion accepting groove 146 and guide rail jut 147.Above-mentioned dimetric support portion accepting groove 146 is used to accommodate above-mentioned guide supporting portion 124; Above-mentioned guide rail jut 147 and the outstanding accordingly side periphery that is formed on above-mentioned support portion accepting groove 146 of above-mentioned guide-track groove 125.
Above-mentioned axle sleeve 120 comprises cylindrical portion 121 and guide rail 123 and timber 22 substantially.Above-mentioned cylindrical portion 121 inside that have drum are accommodated and are combined with above-mentioned rotating shaft 10; Above-mentioned guide rail 123 prolongs towards 121 liang of side directions of above-mentioned cylindrical portion, the above-mentioned centrifugal hammer 140 of sliding guidance; Above-mentioned timber 22 is formed on both sides highlightedly along the length direction of above-mentioned cylindrical portion 121, slides when above-mentioned slide block 30 one are rotated and moves.
In addition, above-mentioned guide rail 123 comprises that substantially guide supporting portion 124 and guide-track groove 125 and centrifugal hammer prevent to break away from projection 126.Above-mentioned guide-track groove 125 is recessed to form along the section that the length direction of above-mentioned guide supporting portion 124 has definite shape; Above-mentioned centrifugal hammer prevents to break away from the end that projection 126 is formed on above-mentioned guide supporting portion 124 highlightedly, can close above-mentioned guide-track groove 125, is used to prevent the disengaging of above-mentioned centrifugal hammer 140.
Figure 14 or Figure 15 are single phase induction motor of the present invention prevents release unit with centrifugal hammer variant embodiment structure charts.
As shown in figure 14, above-mentioned centrifugal hammer prevents to break away from projection 126 ' and joins with guide rail accepting groove 125 1 sides of above-mentioned centrifugal hammer 140, prevent because excessive centrifugal force breaks away from above-mentioned centrifugal hammer 140, and above-mentioned centrifugal hammer prevents to break away from the outstanding certain altitude of height that projection 126 ' cans be compared to above-mentioned guide supporting portion 124 most.
As shown in figure 15, above-mentioned centrifugal hammer prevents to break away from projection 126 " from above-mentioned guide supporting portion 124 bottom surfaces to the top to forming certain inclination angle, make thickness obtain reinforcement, and on the vertical plane of the centrifugal hammer 140 of contact after keeping a determining deviation mutually by centrifugal force.
By said structure, the centrifugal hammer track-type facilities of the centrifugal switch for single-phase induced motor by one embodiment of the invention is described in detail effect of the present invention.
Power supply is imposed on the ancillary coil of stator, then start rotor above-mentioned rotating shaft 10 is rotated.If the rotary speed of above-mentioned rotating shaft 10 reaches certain speed, then above-mentioned centrifugal hammer 140 moves along above-mentioned guide rail 123 towards the direction that deviates from above-mentioned rotating shaft 10 by action of centrifugal force.
At this moment, the guide rail accepting groove 145 that above-mentioned guide rail 123 runs through above-mentioned centrifugal hammer 140 carries out combination, above-mentioned guide-track groove 125 forms along the length direction of above-mentioned guide rail 123, slide under the state that inserts with the guide rail jut 147 of above-mentioned guide-track groove 125 corresponding above-mentioned guide rail accepting grooves 145, above-mentioned centrifugal hammer is moved along above-mentioned guide-track groove 125; Move to guide rail 123 ends of above-mentioned axle sleeve 120 along the axis direction of above-mentioned rotating shaft 10 with the above-mentioned slide block 30 of above-mentioned centrifugal hammer 140 relative motions, make the above-mentioned working lever 61 of the above-mentioned axle collar 32 pressurizations start above-mentioned starting switch, make power supply change the road to main coil, make above-mentioned rotating shaft 10 proceed rotation by above-mentioned main coil from ancillary coil.
At this moment, spring 50 expansion forces of fixing above-mentioned centrifugal hammer 140 weaken or because unusual running when making above-mentioned centrifugal hammer 140 obtain excessive centrifugal force, " prevent that above-mentioned centrifugal hammer 140 breaks away from from guide rail, above-mentioned centrifugal hammer prevents to break away from projection 126,126 ' or 126 " is formed on the end of the axle sleeve 120 guide rail projections 123 of the above-mentioned centrifugal hammer 140 of guiding highlightedly can to prevent to break away from projection 126,126 ' or 126 by above-mentioned centrifugal hammer.
Claims (3)
1. the centrifugal hammer of a centrifugal switch for single-phase induced motor prevents release unit, comprising: rotating shaft, axle sleeve, slide block and centrifugal hammer; But above-mentioned axle sleeve one is combined on the above-mentioned rotating shaft rotatably, is provided with simultaneously along radial direction and carries out guide rail extended towards the outside; When above-mentioned slide block combined with above-mentioned axle sleeve one rotation, above-mentioned slide block opened and closed starting switch along the axis direction and the above-mentioned axle sleeve relative motion of above-mentioned rotating shaft; One side of above-mentioned centrifugal hammer is provided with the guide rail accepting groove that slides along above-mentioned guide rail, but be combined on the above-mentioned slide block to the opposite side relative motion, when above-mentioned rotating shaft is rotated, above-mentioned slide block and above-mentioned axle sleeve are slided along the axis direction of above-mentioned rotating shaft, it is characterized in that, be formed with highlightedly on the above-mentioned axle sleeve and prevent that the centrifugal hammer that above-mentioned centrifugal hammer breaks away from from preventing to break away from projection, above-mentioned centrifugal hammer prevents to break away from projection being formed with along the above-mentioned guide-track groove of the terminal locking of guide rail of the guide-track groove of rail length direction guiding centrifugal hammer, prevents the disengaging of above-mentioned centrifugal hammer.
2. the centrifugal hammer of centrifugal switch for single-phase induced motor according to claim 1 prevents release unit, it is characterized in that, described centrifugal hammer prevent to break away from projection from the bottom surface of described guide-track groove to the top to forming an inclination angle, make thickness obtain increasing.
3. the centrifugal hammer of centrifugal switch for single-phase induced motor according to claim 1 prevents release unit, it is characterized in that, described centrifugal hammer prevents to break away from the projection outstanding formation higher than the side height of described guide rail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031443648A CN100399693C (en) | 2003-09-25 | 2003-09-25 | Centrifugal hammer anti-escape device of centrifugal switch for single-phase induction dynamo |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031443648A CN100399693C (en) | 2003-09-25 | 2003-09-25 | Centrifugal hammer anti-escape device of centrifugal switch for single-phase induction dynamo |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1601882A CN1601882A (en) | 2005-03-30 |
| CN100399693C true CN100399693C (en) | 2008-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031443648A Expired - Fee Related CN100399693C (en) | 2003-09-25 | 2003-09-25 | Centrifugal hammer anti-escape device of centrifugal switch for single-phase induction dynamo |
Country Status (1)
| Country | Link |
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| CN (1) | CN100399693C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103036351A (en) * | 2012-09-30 | 2013-04-10 | 常州亚通杰威电机有限公司 | Motor and applied dryer thereof |
| CN103036363A (en) * | 2012-09-30 | 2013-04-10 | 常州亚通杰威电机有限公司 | Motor centrifugal mechanism |
| WO2018112567A1 (en) * | 2016-12-23 | 2018-06-28 | Weg Equipamentos Elétricos S.A. - Motores | Centrifugal switch for activating a rotating single-phase electrical machine and electrical machine using same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5283405A (en) * | 1992-05-18 | 1994-02-01 | Marathon Electric Mfg. Corp. | Enclosed electrical contact assembly for dynamoelectric machines |
| US5293090A (en) * | 1993-02-19 | 1994-03-08 | Emerson Electric Co. | Centrifugal actuator assembly |
| CN1386085A (en) * | 2000-06-26 | 2002-12-18 | 新东工业株式会社 | Centrifugal projecting machine |
-
2003
- 2003-09-25 CN CNB031443648A patent/CN100399693C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5283405A (en) * | 1992-05-18 | 1994-02-01 | Marathon Electric Mfg. Corp. | Enclosed electrical contact assembly for dynamoelectric machines |
| US5293090A (en) * | 1993-02-19 | 1994-03-08 | Emerson Electric Co. | Centrifugal actuator assembly |
| CN1386085A (en) * | 2000-06-26 | 2002-12-18 | 新东工业株式会社 | Centrifugal projecting machine |
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| Publication number | Publication date |
|---|---|
| CN1601882A (en) | 2005-03-30 |
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