A kind of radiation fan on vehicle direct current generator
Technical field
The present invention relates to a kind of direct current generator, particularly relate to a kind of radiation fan on vehicle direct current generator.
Background technology
The direct current generator of radiator fans includes stator assembly and rotor assembly, and the brush mount component of stator module generally comprises brush rack plate, carbon brush component and inductance, this brush rack plate includes brush rack plate body and the conducting metal assembly being arranged on brush rack plate body, this brush rack plate body is provided with carbon brush installation region and inductance installation region, and generally the distribution of carbon brush component has circumference uniform distribution to be set to 90 degrees each other, a lot of effectively section can be wasted when the motor of this structure is due to the coiling of rotor assembly, therefore, higher once the output relative requirement of motor, rotor assembly will receive the constraint of volume and cannot improve output again.And also have a kind of motor carbon brush be distributed as following situation: the number of described carbon brush installation region is four and is in 0 ° of position of brush rack plate body relative to the centre bore center of circle of brush rack plate body respectively, 60 ° of positions, 120 ° of positions and 180 ° of positions, described carbon brush component includes the first carbon brush component, second carbon brush component, 3rd carbon brush component and the 4th carbon brush component, described first carbon brush component, second carbon brush component, 3rd carbon brush component and the 4th carbon brush component one_to_one corresponding are installed on 0 ° of position, 60 ° of positions, the carbon brush installation region of 120 ° of positions and 180 ° of positions, described inductance is installed on inductance installation region by inductance mounting structure, this kind of motor is more due to the effective section of the coiling of rotor assembly, therefore, rotor volume is less, its output is compared height.Right this kind of motor still can there is problems in that the conducting metal assembly of 1. this kind of motors includes two bus, and this bus is to be stuck on brush rack plate body, can loosen after a long time use, cause noise to increase, affect the stability of motor simultaneously.2. it is all the bottom crossing carbon brush component due to bus, and bus and carbon brush component are all heater elements, thus causing heating and concentrating, affecting the service life of motor;3. the radiating effect of brush rack plate body self is bad, owing to ensure that brush rack plate body has enough intensity convenient installation bus and carbon brush component, causes the louvre on brush rack plate body few, it is necessary to intensity is strengthened in abundant plate face;4. the armature spindle of current motor is rotated in the stator case of the stator module being installed on motor by bearing and relies on axial wave washer to carry out nose balance, so in the process constantly run, motor temperature necessarily rises, the structure such as wave washer and bearing there will be the situation because of expanded by heating in the case, and original swelling state now between armature spindle and bearing, can not be remained, thus there is the situation that armature spindle axially rocks, radiation fan on vehicle direct current generator is internal once occur that this kind of situation is extremely hazardous.
Summary of the invention
The technical problem to be solved is: provide a kind of radiation fan on vehicle direct current generator, and this direct current generator makes conducting metal assembly and carbon brush component heat radiation dispersion, improves radiating effect, it is ensured that motor operation stability.
nullFor solving above-mentioned technical problem,The technical scheme is that a kind of radiation fan on vehicle direct current generator,Including stator assembly and rotor assembly,Described stator module includes stator case、It is fixed on the magnet steel in stator case and the brush mount component being installed in stator case,Described rotor includes the armature spindle being rotatably installed in stator case、It is fixed on the armature core on armature spindle and diverter,Armature core is wound with armature winding,Described brush mount component includes brush rack plate、Carbon brush component and inductance,This brush rack plate includes brush rack plate body and the conducting metal assembly being arranged on brush rack plate body,This brush rack plate body is provided with carbon brush installation region and inductance installation region,The number of described carbon brush installation region is four and is in 0 ° of position of brush rack plate body relative to the centre bore center of circle of brush rack plate body respectively、60 ° of positions、120 ° of positions and 180 ° of positions,Described carbon brush component includes the first carbon brush component、Second carbon brush component、3rd carbon brush component and the 4th carbon brush component,Described first carbon brush component、Second carbon brush component、3rd carbon brush component and the 4th carbon brush component one_to_one corresponding are installed on 0 ° of position、60 ° of positions、The carbon brush installation region of 120 ° of positions and 180 ° of positions,Described first carbon brush component、Second carbon brush component、3rd carbon brush component and the 4th carbon brush component weld with the correspondence position of conducting metal assembly respectively,Described first carbon brush component、Second carbon brush component、3rd carbon brush component and the 4th carbon brush component all coordinate with the diverter on rotor,Described inductance is installed on inductance installation region by inductance mounting structure,Described conducting metal assembly includes embedding intrinsic first connection strap of brush rack plate、Second connection strap and a pair connection sheet,Described first connection strap is provided with the first inductance connection portion、First carbon brush connecting portion and the 3rd carbon brush connecting portion,Described second connection strap is provided with the second carbon brush connecting portion、4th carbon brush connecting portion and the second inductance connection portion,First inductance connection portion is adjacent with the first carbon brush connecting portion,Second carbon brush connecting portion is between the first carbon brush connecting portion and the 3rd carbon brush connecting portion,3rd carbon brush connecting portion is between the second carbon brush connecting portion and the 4th carbon brush connecting portion,Described first connection strap is pressed close to the outline arc of brush rack plate body and is extended and be in the first carbon brush component、Second carbon brush component、Outside 3rd carbon brush component,Described second connection strap includes pressing close to the outline of brush rack plate body and is in the outer arcuate section outside the 4th carbon brush component、Dodge the indent segmental arc of the 3rd carbon brush connecting portion and cross bottom the 3rd carbon brush component and extend to the extension between the second carbon brush component and the 3rd carbon brush component,Described first carbon brush component、Second carbon brush component、3rd carbon brush component and the 4th carbon brush component are connected to the first carbon brush connecting portion by wire、Second carbon brush connecting portion、3rd carbon brush connecting portion and the 4th carbon brush connecting portion,It is connected to the first inductance between described first inductance connection portion and adjacent connection sheet,It is connected to the second inductance between second inductance connection portion and adjacent connection sheet.
As the preferred scheme of one, on described brush rack plate body between the first inductance and the first carbon brush component, between the first carbon brush component and the second carbon brush component, between the second carbon brush component and the 3rd carbon brush component, between the 3rd carbon brush component and the 4th carbon brush component, be provided with hollow hole between the 4th carbon brush component and the second inductance.
As the preferred scheme of one, the segmental arc be in the segmental arc between the first carbon brush component and the second carbon brush component in described first connection strap, being between the second carbon brush component and the 3rd carbon brush component is at the corresponding openwork hole exposed segmental arc of exposed composition, and the joining section between outer arcuate section and indent segmental arc in described second connection strap is in hollow hole scope exposed.
As the preferred scheme of one, described brush rack plate body is provided with the first protection reinforcement and the second protection reinforcement, described first protection reinforcement is between the outside and exposed segmental arc of the second carbon brush connecting portion, and described second protection reinforcement is between the 3rd carbon brush connecting portion and exposed joining section.
As the preferred scheme of one, in the pair of connection sheet, one of them connects sheet and includes connecting sheet body and being connected to the ground strip foot connecting sheet outer body portion, outward flange and the ground strip foot of described connection sheet body all embed in brush rack plate body, the end of described ground strip foot extends to the outer peripheral ground connection breach of brush rack plate body, being positioned at ground connection indentation, there on described brush rack plate body and be provided with fixing reinforcement, described ground strip foot is connected with stator case.
As the preferred scheme of one, described brush rack plate body is between a pair connection sheet and is additionally provided with electric capacity installation region and resistance installation region, described electric capacity installation region is provided with hollow hole, and described electric capacity installation region and resistance installation region are separately installed with and are connected electric capacity and the varistor that sheet electrically connects with a pair.
nullAs the preferred scheme of one,Described stator case includes stator case body and end cap,Described stator case body is provided with bearing installation cavity,Described bearing installation cavity includes cylinder side wall and for stopping the stopper that bearing axially rocks,This stopper is provided with the through hole facilitating armature spindle traverse,Described stopper is perpendicular with cylinder side wall,In described bearing installation cavity, clutch shaft bearing is installed,The inner face of clutch shaft bearing and stopper fit,The inwall of described cylinder side wall and clutch shaft bearing outer peripheral face interference fit,The annular bearing limiting plate that on described stator case body, also the outer face being detachably provided with clutch shaft bearing coordinates,Described end cap is fixed on one end of stator case body,The medial surface of described end cap is provided with bearing mounting cylinder,In described bearing mounting cylinder, the second bearing is installed,Described second bearing is fixed on one end of armature spindle,Described clutch shaft bearing is fixed on the other end of armature spindle.
As the preferred scheme of one, for snapping connection between described bearing limiting plate and stator case body, bearing limiting plate is provided with several buckles, stator case is provided with and the hole clipping used that is clasped.
It is that circumference is uniformly distributed as the preferred scheme of one, the number of described buckle 6, and buckle along the outer rim of bearing limiting plate.
As the preferred scheme of one, for snapping connection between described bearing limiting plate and stator case, stator case is provided with several buckles, bearing limiting plate is provided with and the hole clipping used that is clasped.
After have employed technique scheme, the effect of the present invention is: 1. owing to the first connection strap and the second connection strap are to be directly embedded on brush rack plate body, install very firm, it is to avoid loosen, and reduces noise;null2. owing to described first connection strap presses close to the outline arc extension of brush rack plate body and is in the first carbon brush component、Second carbon brush component、Outside 3rd carbon brush component,Described second connection strap includes pressing close to the outline of brush rack plate body and is in the outer arcuate section outside the 4th carbon brush component、Dodge the indent segmental arc of the 3rd carbon brush connecting portion and cross bottom the 3rd carbon brush component and extend to the extension between the second carbon brush component and the 3rd carbon brush component,Therefore,First connection strap has directly dodged the first carbon brush component、Second carbon brush component、3rd carbon brush component,And the second connection strap only has extension to cross bottom the 3rd carbon brush component,Make the first connection strap so as much as possible、The heating of the second connection strap and the first carbon brush component、Second carbon brush component、3rd carbon brush component、The heating dispersion of the 4th carbon brush component,The integral heat sink of such brush mount component is effective,Still good heat dispersion is can guarantee that when motor high-power output,Improve the stability that motor runs.
Again due on described brush rack plate body between the first inductance and the first carbon brush component, between the first carbon brush component and the second carbon brush component, between the second carbon brush component and the 3rd carbon brush component, between the 3rd carbon brush component and the 4th carbon brush component, be provided with hollow hole between the 4th carbon brush component and the second inductance.Utilizing this hollow hole can strengthen heat radiation, improve the radiation air of axial flow direction, simultaneously as the first connection strap and the second connection strap embed brush rack plate body, the first connection strap and the second connection strap provide enough intensity and ensure.
Again owing to described first connection strap being in the segmental arc between the first carbon brush component and the second carbon brush component, the segmental arc that is between the second carbon brush component and the 3rd carbon brush component at the corresponding openwork hole exposed segmental arc of exposed composition, the joining section between outer arcuate section and indent segmental arc in described second connection strap is in hollow hole scope exposed.Which further increases the first connection strap and the radiating effect of the second connection strap.
Again owing to described brush rack plate body being provided with the first protection reinforcement and the second protection reinforcement, described first protection reinforcement is between the outside and exposed segmental arc of the second carbon brush connecting portion, and described second protection reinforcement is between the 3rd carbon brush connecting portion and exposed joining section.First protection reinforcement and the second protection reinforcement not only serve the intensity effect strengthening brush rack plate body, and the wire of carbon brush component can be protected, avoid the wire of the second carbon brush component long overstocking herein with the first connection strap contact short circuit, equally, the second protection reinforcement also can be prevented effectively from the wire of the 3rd carbon brush component long overstocking herein with the second connection strap contact short circuit.
Again due in the pair of connection sheet, one of them connects sheet and includes connecting sheet body and being connected to the ground strip foot connecting sheet outer body portion, outward flange and the ground strip foot of described connection sheet body all embed in brush rack plate body, the end of described ground strip foot extends to the outer peripheral ground connection breach of brush rack plate body, being positioned at ground connection indentation, there on described brush rack plate body and be provided with fixing reinforcement, described ground strip foot is connected with stator case.This fixing reinforcement makes the embedding of connection sheet firm, and embeds brush rack plate body further by ground strip foot, utilizes fixing reinforcement can consolidate ground strip foot simultaneously, reduces and even avoid brush rack plate body in the fusing of ground connection indentation, there and damage.
nullStator case body and end cap is included again due to described stator case,Described stator case body is provided with bearing installation cavity,Described bearing installation cavity includes cylinder side wall and for stopping the stopper that bearing axially rocks,This stopper is provided with the through hole facilitating armature spindle traverse,Described stopper is perpendicular with cylinder side wall,In described bearing installation cavity, clutch shaft bearing is installed,The inner face of clutch shaft bearing and stopper fit,The inwall of described cylinder side wall and clutch shaft bearing outer peripheral face interference fit,The annular bearing limiting plate that on described stator case body, also the outer face being detachably provided with clutch shaft bearing coordinates,Described end cap is fixed on one end of stator case body,The medial surface of described end cap is provided with bearing mounting cylinder,In described bearing mounting cylinder, the second bearing is installed,Described second bearing is fixed on one end of armature spindle,Described clutch shaft bearing is fixed on the other end of armature spindle.Owing to this stator case assembly includes for stopping the stopper and bearing limiting plate that bearing axially rocks, namely two end faces of bearing are all fixed and spacing respectively, so namely motor operationally elevates the temperature without the situation occurring that armature spindle axially rocks, and this stator case assembly has simple in construction, advantage easy for installation.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the exploded perspective view of the embodiment of the present invention;
Fig. 2 is the explosive view of the brush mount component of the embodiment of the present invention;
Fig. 3 is the front schematic view of embodiment of the present invention brush mount component;
Fig. 4 is the circuit connection diagram of the embodiment of the present invention;
Fig. 5 is the axonometric chart of the brush mount component of the embodiment of the present invention;
Fig. 6 is the Fig. 5 partial enlarged drawing at A place;
Fig. 7 is the Fig. 5 partial enlarged drawing at B place;
Fig. 8 is the front layout drawing of conducting metal assembly;
Fig. 9 is the front schematic view of brush rack plate body and conducting metal assembly in the embodiment of the present invention;
Figure 10 is the sectional view of stator case body in the embodiment of the present invention;
In accompanying drawing: 1. brush rack plate body;101.0 ° position;102.60 ° position;103.120 ° position;104.180 ° position;105. the first inductance installation region;106. the second inductance installation region;107. electric capacity installation region;108. resistance installation region;2. the first carbon brush component;3. the second carbon brush component;4. the 3rd carbon brush component;5. the 4th carbon brush component;6. the first inductance;7. electric capacity;8. varistor;9;Second inductance;10. conducting metal assembly;1001. the first connection strap;10011. the first inductance connection portion;10012. the first carbon brush connecting portion;10013. the 3rd carbon brush connecting portion;10014. exposed segmental arc;1002. the second connection strap;10021. the 4th carbon brush connecting portion;10022. the second inductance connection portion;10023. the second carbon brush connecting portion;10024. outer arcuate section;10025. joining section;10026. extension;10027. indent segmental arc;1003. a connecting piece;1004. second connects sheet;10041. connect sheet body;10042. ground strip foot;11. hollow hole;12. the first protection reinforcement;13. the second protection reinforcement;14. fixing reinforcement;100. stator case body;200. rotor assembly;300. brush mount component;400. end cap;10001. bearing installation cavity;10002. stopper;10003. bearing limiting plate;10004. buckle;10005. clutch shaft bearing.
Detailed description of the invention
Below by specific embodiment, the present invention is described in further detail.
As shown in Figures 1 to 10, a kind of radiation fan on vehicle direct current generator, including stator assembly and rotor assembly 200.
nullAs shown in Fig. 1 and Figure 10,Described stator module includes stator case、It is fixed on the magnet steel in stator case and the brush mount component 300 being installed in stator case,Rotor assembly 200 rotates and is installed in stator case,Described stator case includes stator case body 100 and end cap 400,Described stator case body 100 is provided with bearing installation cavity 10001,Described bearing installation cavity 10001 includes cylinder side wall and for stopping the stopper 10002 that bearing axially rocks,This stopper 10002 is provided with the through hole facilitating armature spindle traverse,Described stopper 10002 is perpendicular with cylinder side wall,In described bearing installation cavity 10001, clutch shaft bearing 10005 is installed,The inner face of clutch shaft bearing 10005 and stopper 10002 fit,The inwall of described cylinder side wall and clutch shaft bearing 10005 outer peripheral face interference fit,The bearing limiting plate 10003 of the annular that the outer face being also detachably provided with clutch shaft bearing 10005 coordinates on described stator case body 100,Described end cap 400 is fixed on one end of stator case body 100,The medial surface of described end cap 400 is provided with bearing mounting cylinder,In described bearing mounting cylinder, the second bearing is installed,Described second bearing is fixed on one end of armature spindle,Described clutch shaft bearing 10005 is fixed on the other end of armature spindle,When actual assembling,Second bearing is to be directly anchored on armature spindle,Clutch shaft bearing 10005 is then first be installed in bearing installation cavity 10001,And bearing limiting plate 10003 is fixed,Then dispensing rotor assembly 200 is refilled,Armature spindle is made to insert in the inner ring of clutch shaft bearing 10005 and interference fit with it.In the present embodiment, be connected for buckle 10004 between described bearing limiting plate 10003 and stator case body 100, bearing limiting plate 10003 be provided with several buckles 10004, stator case is provided with buckle 10004 with the use of hole clipping.The number of described buckle 10,004 6, and buckle 10004 is that circumference is uniformly distributed along the outer rim of bearing limiting plate 10003.Certainly, bearing limiting plate 10003 also can adopt other connected modes, as being connected for buckle 10004 between described bearing limiting plate 10003 and stator case, stator case is provided with several buckles 10004, bearing limiting plate 10003 is provided with buckle 10004 with the use of hole clipping, even may be used without screw or bearing pin fixed.
As it is shown in figure 1, described rotor includes the armature spindle being rotatably installed in stator case, the armature core being fixed on armature spindle and diverter, armature core is wound with armature winding.
nullAs shown in Fig. 2 to Figure 10,Described brush mount component 300 includes brush rack plate、Carbon brush component and inductance,This brush rack plate includes brush rack plate body 1 and the conducting metal assembly 10 being arranged on brush rack plate body 1,This brush rack plate body 1 is provided with carbon brush installation region and inductance installation region,The number of described carbon brush installation region is four and is in 0 ° of position 101 of brush rack plate body 1 relative to the centre bore center of circle of brush rack plate body 1 respectively、60 ° of positions 102、120 ° of positions 103 and 180 ° of positions 104,Described carbon brush component includes the first carbon brush component 2、Second carbon brush component 3、3rd carbon brush component 4 and the 4th carbon brush component 5,Described first carbon brush component 2、Second carbon brush component 3、3rd carbon brush component 4 and the 4th carbon brush component 5 one_to_one corresponding are installed on 0 ° of position 101、60 ° of positions 102、The carbon brush installation region of 120 ° of positions 103 and 180 ° of positions 104,In the present embodiment,Position described by this place is successively determine with the position in Fig. 3,Being in leftward position is 0 ° of position 101101,And to be followed successively by 60 ° of positions 102102 clockwise、120 ° of positions 103103 and 180 ° of positions 104104.nullDescribed first carbon brush component 2、Second carbon brush component 3、3rd carbon brush component 4 and the 4th carbon brush component 5 weld with the correspondence position of conducting metal assembly 10 respectively,Described first carbon brush component 2、Second carbon brush component 3、3rd carbon brush component 4 and the 4th carbon brush component 5 all coordinate with the diverter on rotor,Described inductance is installed on inductance installation region by inductance mounting structure,Described conducting metal assembly 10 includes embedding the first connection strap 1001 in brush rack plate body 1、Second connection strap 1002 and a pair connection sheet,Described first connection strap 1001 is provided with the first inductance connection portion 10011、First carbon brush connecting portion 10012 and the 3rd carbon brush connecting portion 10013,Described second connection strap 1002 is provided with the second carbon brush connecting portion 10023、4th carbon brush connecting portion 10021 and the second inductance connection portion 10022,First inductance connection portion 10011 is adjacent with the first carbon brush connecting portion 10012,Second carbon brush connecting portion 10023 is between the first carbon brush connecting portion 10012 and the 3rd carbon brush connecting portion 10013,3rd carbon brush connecting portion 10013 is between the second carbon brush connecting portion 10023 and the 4th carbon brush connecting portion 10021,Described first connection strap 1001 is pressed close to the outline arc of brush rack plate body 1 and is extended and be in the first carbon brush component 2、Second carbon brush component 3、Outside 3rd carbon brush component 4,Described second connection strap 1002 includes pressing close to the outline of brush rack plate body 1 and is in the outer arcuate section 10024 outside the 4th carbon brush component 5、Dodge the indent segmental arc 10027 of the 3rd carbon brush connecting portion 10013 and cross bottom the 3rd carbon brush component 4 and extend to the extension 10026 between the second carbon brush component 3 and the 3rd carbon brush component 4,Described first carbon brush component 2、Second carbon brush component 3、3rd carbon brush component 4 and the 4th carbon brush component 5 are connected to the first carbon brush connecting portion 10012 by wire、Second carbon brush connecting portion 10023、3rd carbon brush connecting portion 10013 and the 4th carbon brush connecting portion 10021,The first inductance 6 it is connected between described first inductance connection portion 10011 and adjacent connection sheet,The second inductance 9 it is connected between second inductance connection portion 10022 and adjacent connection sheet.In the present embodiment, inductance installing zone includes two, first inductance 6 is installed in the first inductance 6 installation region 105, and the second inductance 9 is installed in the second inductance 9 installation region 106, described inductance mounting structure includes an inductance mounting groove, and the both sides of inductance mounting groove are provided with gusset hurdle, and inductance is embedded in inductance mounting groove, the bottom land of inductance mounting groove is provided with hollow hole 11, facilitates inductance to dispel the heat.
On described brush rack plate body 1 between the first inductance 6 and the first carbon brush component 2, between the first carbon brush component 2 and the second carbon brush component 3, between the second carbon brush component 3 and the 3rd carbon brush component 4, between the 3rd carbon brush component 4 and the 4th carbon brush component 5, be provided with hollow hole 11 between the 4th carbon brush component 5 and the second inductance 9.The size being smaller in size than the hollow hole 11 near brush rack plate body 1 edge of the hollow hole 11 near brush rack plate body 1 center.Owing to first connection strap the 1001, second connection strap 1002 is embedded in brush rack plate body 1, and just through the bottom of one of them carbon brush component, make heat radiation more disperse, then coordinate multiple hollow hole 11 to facilitate axial ventilation, improve radiating effect.And the first connection strap 1001 and the second connection strap 1002 further enhance the intensity of brush rack plate body 1, particularly the first connection strap 1001 is pressed close to the outline arc extension of brush rack plate body 1 and is in outside first carbon brush component the 2, second carbon brush component the 3, the 3rd carbon brush component 4, the intensity making brush rack plate body 1 is strengthened more, brush rack plate body 1 materials reduce, cost reduces, and weight reduces.
The segmental arc be in the segmental arc between the first carbon brush component 2 and the second carbon brush component 3 in described first connection strap 1001, being between the second carbon brush component 3 and the 3rd carbon brush component 4 is at the corresponding hollow hole 11 place exposed segmental arc 10014 of exposed composition, and the outward flange of described exposed segmental arc 10014 embeds in brush rack plate body 1.The joining section 10025 between outer arcuate section 10024 and indent segmental arc 10027 in described second connection strap 1002 is in hollow hole 11 scope exposed.Exposed segmental arc 10014 and exposed joining section 10025 is utilized to make the heat radiation of the first connection strap 1001 and the second connection strap 1002 improve further.
Brush rack plate body 1 as described in Fig. 6 and Fig. 7 is provided with the first protection reinforcement 12 and the second protection reinforcement 13, described first protection reinforcement 12 is between the outside and exposed segmental arc 10014 of the second carbon brush connecting portion 10023, and described second protection reinforcement 13 is between the 3rd carbon brush connecting portion 10013 and exposed joining section 10025.nullFirst,First protection reinforcement 12 and the second protection reinforcement 13 play certain booster action,Improve the intensity of brush rack plate body 1,Secondly,First protection reinforcement 12 is between outside and the exposed segmental arc 10014 of the second carbon brush connecting portion 10023,And owing to the second carbon brush connecting portion 10023 is that the wire with the second carbon brush component 3 welds,And wire is embedded in wire and embeds in mouth,Although wire is will not to contact with the exposed segmental arc 10014 of a connecting piece 1003 when actual assembling,But motor is in life-time service process,Its working environment rather harsh,Long vibrations etc. be likely to result in the wire that overstocks herein occur partially dynamic contact with exposed segmental arc 10014 and short-circuit,Now,Utilize the first protection reinforcement 12 can intercept wire,Avoid short circuit.In like manner, the second protection reinforcement 13 can intercept the wire of the 3rd carbon brush component 4 and contacts with exposed joining section 10025 and short-circuit.
In the pair of connection sheet, one of them connects sheet and includes connecting sheet body 10041 and being connected to the ground strip foot 10042 connecting sheet body 10041 lateral part, describe in order to convenient, connect sheet for a pair and be referred to as a connecting piece 1003 and the second connection sheet 1004, and the present embodiment is the second connection sheet 1004 is provided with ground strip foot 10042;The outward flange of described connection sheet body 10041 and ground strip foot 10042 all embed in brush rack plate body 1, the end of described ground strip foot 10042 extends to the outer peripheral ground connection breach of brush rack plate body 1, described brush rack plate body 1 is positioned at ground connection indentation, there and is provided with fixing reinforcement 14, described ground strip foot 10042 is connected with stator case, ground strip foot 10042 can be protected by this fixing reinforcement 14, improve the brush rack plate body 1 intensity at ground strip foot 10042 place, it is to avoid fusing or damage occur at this place.
Described brush rack plate body 1 is between a pair connection sheet and is additionally provided with electric capacity 7 installation region 107 and resistance installation region 108, described electric capacity 7 installation region 107 is provided with hollow hole 11, and described electric capacity 7 installation region 107 and resistance installation region 108 are separately installed with and are connected electric capacity 7 and the varistor 8 that sheet electrically connects with a pair.
Embodiment described above is only the description to the preferred embodiment of the present invention; not as limiting the scope of the invention; designing on the basis of spirit without departing from the present invention; the various deformation that technical solution of the present invention is made and transformation, all should fall in the protection domain that claims of the present invention are determined.