CN108039793A - starter, motor and its operation method - Google Patents

Abstract

The application provides starter, motor and starter operation method.The starter includes：Armature；Brush, it is sheathed on one end of the armature；End cap, it is assemblied in one end that the brush deviates from the armature；And metallic elastic component, it is supported between the brush and the end cap, and be configured in the starter curent change when flexible and twisting action occurs.According to the technical solution of the application, flexible and twisting action can be occurred when passing through electric current by being supported on the metallic elastic component between brush and end cap, and change its flexible and torsion degree in curent change and carry out accommodation, thus between brush and end cap relative position and angular relationship is with the torsion of metallic elastic component and there are a degree of change, this exists as the offset angle of armature commutation angle, so that caused spark is reduced during armature commutates, reduces brush wear and finally extend motor service life.

Description

Starter, motor and its operation method

Technical field

This application involves the starter of motor field, more particularly to motor.

Background technology

At present, powerful threephase asynchronous is unable to across-the-line starting under normal circumstances, and needs starter Assist to start.Electric current at the start can reach 6-7 times of rated current, this impact to power grid is larger, particularly high-power Impact is then more violent caused by motor.Therefore, starter is faced with to service life of a machine increasingly higher demands, and this makes The degree of wear of the brush in continuous commutation process is then depended primarily upon with the service life.Due to the current jump in starting process It is larger, even changed between 100A-1000A, then larger electric spark can be produced in commutation process, thus exacerbate brush Abrasion.

Therefore, it is necessary to improved technical solution is provided to overcome technical problem existing in the prior art.

The content of the invention

The application technical problem underlying to be solved is starter service life problem caused by brush excessive abrasion.

In order to solve the above technical problems, one side the application provides starter, it includes：Armature；Brush, it is sheathed on institute State one end of armature；End cap, it is assemblied in one end that the brush deviates from the armature；And metallic elastic component, it is supported Between the brush and the end cap, and be configured in the starter curent change when occur flexible and reverse dynamic Make.

Another aspect the application provides motor, it includes：Foregoing starter.

Another further aspect the application provides the operation method of starter, it is used for foregoing starter, wherein：Described After the power is turned on, on brush and end cap reciprocal pivotal movement occurs starter for armature, produces changing magnetic field, the magnetic fields in The metallic elastic component being supported between the brush and the end cap, makes the metallic elastic component occur flexible and turn round Rotate and make, and drive the brush and the end cap twists action.

According to the technical solution of the application, electric current can passed through by being supported on the metallic elastic component between brush and end cap Shi Fasheng stretches and twisting action, and changes its flexible and torsion degree in curent change and carry out accommodation, thus brush Relative position and angular relationship be with the torsion of metallic elastic component and there are a degree of change between end cap, this using as The offset angle of armature commutation angle and exist so that armature commutate during caused spark be reduced, reduce brush wear simultaneously It is final to extend motor service life.

Brief description of the drawings

The detailed description of detailed description below is referred to reference to attached drawing, will be more fully appreciated the application, in attached drawing Same reference numeral refers to element same in view.Wherein：

Fig. 1 shows a kind of schematic diagram of the starter of embodiment；

Fig. 2 shows a kind of schematic side view of the subelement of the starter of embodiment；

Fig. 3 shows a kind of schematic cross-sectional view of the spring of embodiment；

Fig. 4 shows the magnetic field schematic diagram on a kind of spring of embodiment；

Fig. 5 shows a kind of schematic diagram of spring of embodiment in a normal state；

Fig. 6 shows a kind of schematic diagram of spring of embodiment under compression.

Embodiment

Please refer to Fig.1 to shown in Fig. 2, include filling successively according to a kind of starter 100 of embodiment of the application Enter the armature 110 in shell, brush 120, spring 140 and the end cap 130 for being encapsulated in end.Wherein, brush 120 is sheathed on electricity One end of pivot 110；End cap 130 is assemblied in one end that brush 120 deviates from armature 110；And spring 140 is supported on brush 120 and end Between lid 130, and be configured in starter 100 curent change when flexible and twisting action occurs.Under such a arrangement, Flexible and twisting action can be occurred when passing through electric current by being supported on the spring 140 between brush 120 and end cap 130, and in electricity Change its flexible and torsion degree during rheology and carry out accommodation, thus relative position and angle between brush 120 and end cap 130 With the torsion of spring 140 and there are a degree of change, this is deposited degree relation using as the offset angle of 110 commutation angle of armature So that caused spark is reduced during armature 110 commutates, and reduces the abrasion of brush 120 and finally extend motor using the longevity Life.

According to the conception in the application previous embodiment, it is based primarily upon can in brush 120 and the setting of end cap 130 Be powered when occur compression and torsional deflection and after a loss of power the element of form back to normal come realize provide commutation angle compensation this One purpose.Therefore, aforementioned components are not limited to the spring shown in attached drawing.In fact, other metallic elastic components also have Aforesaid properties, therefore can also meet aforementioned claim.It will be retraced by taking spring as an example herein and state such metallic elastic component and conceiving Played in effect and herein conceive on the basis of a variety of optimizations.

Referring to Fig. 3, Fig. 5 and Fig. 6, for example, a kind of specific implementation form as spring, can use steel spring herein 140, because it is with preferable resilience and cost performance.On this basis, can also be in the Steel coil shape body 141 of spring 140 One layer of copper film 142 is cladded with, this is because copper has more preferable electric conductivity and Corrosion Protection, such a arrangement can relative reduction The resistance of spring and the generation for reducing corrosion phenomenon as far as possible.

On the other hand, the inner side 141a width of the helical form body 141 of the spring is less than outside 141b width.Such a cloth Putting makes spring have more preferable ductility, so through it is compressed while can reverse the angle of opposite bigger, so as to increase To the compensation range of commutation angle.

In actual design, it is contemplated that the space in the presence of end cap and brush is extremely limited, and therefore, it is necessary to consider The complexity of benefit caused by compensation performance and structure design.At this time, it is expected to be arranged to have in compression by spring 140 5 ° -9 ° of windup-degree, and the windup-degree thus, it is possible to make there are 5 ° -9 ° between brush 120 and end cap 130, and be finally electricity Pivot commutation angle brings 5 ° -9 ° of angle compensation.Spring is designed to the minimum compressed length less than 5 millimeters at the same time, with suitable For the conventional remaining space between most of end cap and brush.

In addition, the first end 143 of spring 140 should be fixed to brush 120 and/or fix the second end 144 of spring 140 To end cap 130, this spring element is added in conventional starter construction to realize.More specifically, can be in brush and end cap It is upper that locating convex block is set respectively, have accommodate and the mounting hole of fixed spring end thereon, to realize spring between the two Firm connection.

Conceived according to the another kind of the application, also provide it is a kind of be applied in previous embodiment any one starter or its The operation method of combination.Specifically, in starter after the power is turned on, on brush 120 and end cap 130 reciprocal pivot occurs for armature 110 Transhipment is dynamic, produces changing magnetic field as shown in Figure 4, magnetic fields are in the metal elastic being supported between brush 120 and end cap 130 Property element, make metallic elastic component that flexible and twisting action occur, and drive brush 120 and end cap 130 twists action, from And a degree of compensation is carried out to commutation angle.

Conceived according to the another kind of the application, a kind of motor of embodiment is also provided herein.Before the motor includes The relay in any one embodiment is stated, thus also there is corresponding technique effect, therefore no longer superfluous words herein.

Above embodiment is merely to illustrate the application, and is not the limitation to the application.To illustrate relative position Relation, used herein left and right, upper inferior opposite directional terminology, not for the restriction of absolute position.Related technology The those of ordinary skill in field, in the case where not departing from scope of the present application, can also make the technical solution of the application Various change and modification, therefore all equivalent technical solutions fall within the category of the application, the scope of patent protection of the application It should be defined by the claims.

Claims (10)

1. starter（100）, it is characterised in that including：

Armature（110）；

Brush（120）, it is sheathed on the armature（110）One end；

End cap（130）, it is assemblied in the brush（120）Away from the armature（110）One end；And

Metallic elastic component, it is supported on the brush（120）With the end cap（130）Between, and be configured at described Motivation（100）Flexible and twisting action occurs during interior curent change.

2. starter according to claim 1（100）, wherein, the metallic elastic component is spring（140）.

3. starter according to claim 2（100）, wherein, the spring（140）It is cladded with one layer of copper film（142）.

4. starter according to claim 3（100）, wherein, the spring（140）It is formed from steel.

5. starter according to claim 2（100）, wherein, the spring（140）With helical form body（141）, institute State helical form body（141）Inboard width（141a）Less than outside（141b）Width.

6. starter according to claim 2（100）, wherein, the spring（140）Windup-degree be 5 ° -9 °, and institute State brush（120）With the end cap（130）Between windup-degree be 5 ° -9 °.

7. starter according to claim 2（100）, wherein, the spring（140）With the minimum pressure less than 5 millimeters Contracting length.

8. starter according to claim 2（100）, wherein, the spring（140）First end（143）It is fixed to institute State brush（120）And/or the spring（140）Second end（144）It is fixed to the end cap（130）.

A kind of 9. motor, it is characterised in that including：Starter as described in claim 1 to 8 any one（100）.

A kind of 10. starter（100）Operation method, it is used for the starter as described in claim 1 to 8 any one （100）, it is characterised in that：In the starter（100）After the power is turned on, armature（110）On brush（120）And end cap（130）Hair Raw reciprocal pivotal movement, produces changing magnetic field, and the magnetic fields are in being supported on the brush（120）With the end cap （130）Between the metallic elastic component, make the metallic elastic component that flexible and twisting action occur, and drive the electricity Brush 120）And the end cap（130）Twist action.