CN103746497A - Method and device for protecting electric brush of power generator of vehicle - Google Patents
Method and device for protecting electric brush of power generator of vehicle Download PDFInfo
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- CN103746497A CN103746497A CN201410051173.6A CN201410051173A CN103746497A CN 103746497 A CN103746497 A CN 103746497A CN 201410051173 A CN201410051173 A CN 201410051173A CN 103746497 A CN103746497 A CN 103746497A
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Abstract
The invention discloses a method and a device for protecting an electric brush of a power generator of a vehicle. The electric brush of the power generator is arranged in a closed chamber, and the electric brush of the power generator is isolated from the external environment by the closed chamber to avoid the harmful influence on the electric brush, so that protection is implemented. The device is characterized in that the electric brush of the power generator is arranged in the closed chamber, that is, the electric brush of the power generator is arranged in the closed chamber which is formed by the matching of a rear end cover of the power generator, an electric brush box, a sealing pad, an air guide plate, a collector ring and a rotor shaft; the harmful damage to the electric brush of the power generator caused by dust, cement or other micro foreign matters in the external environment can be avoided to the maximal extent when the power generator works, so that the fault rate of the power generator is reduced, and the service life of the power generator is prolonged. Through the closed chamber formed through the assembly, the electric brush of the power generator is positioned in the closed environment in the power generator of the vehicle, and the service life of the electric brush of the power generator is prolonged.
Description
Technical field
The invention belongs to a kind of guard method and device of automobile component, the especially guard method of automobile generating electromechanical brush and device, is mainly used in improving the degree of protection of automobile generating electromechanical brush, the useful life of prolongation automobile generating electromechanical brush.
Background technology
Since nineteen nineties, along with the develop rapidly of automobile industry, its requirement to spare and accessory parts is also more and more higher, more and more stricter.Automobile current generator is an accessory that technology content is higher on automobile, and very large lifting has occurred than before for its performance and structure; On this basis, just become one of whether advanced unalterable quota of measurement generator techniques and quality the useful life of generator.In guaranteed performance and do not increase on the basis of cost, the structure of generator is optimized to design, in the hope of extending the useful life of automobile generating electromechanical brush, become the important topic of domestic and international automobile current generator Corporation R & D department.
The factor that determines generator useful life mainly concentrates on brush, bearing and diode.In general, be one of key factor determining generator useful life the useful life of brush.And the principal element that affects the useful life of brush has two, one is the material of himself, and one is the adverse effect of external environment to it; And start with to promote its useful life from material, and often mean that cost also will increase, therefore this method will be cautious use of; Another kind method is exactly the degree of protection with raising brush by structural design, stops or reduces the adverse effect that external environment causes it, thereby reach, extends the generator brush object in useful life.Most domestic enterprise, under the popular prerequisite of material, all protects the brush position of automobile current generator by structural design as much as possible at present, and method is different, and effect is also not quite similar, but deposits on the whole problem both ways; The one, some design is tight not, and automobile generating electromechanical brush is substantially in a kind of open state, thereby protection effect is very poor, makes brush in the process of work, very easily be subject to external influence and lose efficacy; Although it is fine that another is exactly the effect of its protection, complex structure, cost is also higher; Therefore be still necessary this to be improved.
By retrieval, find that there is the patent about automobile generating electromechanical brush protection aspect, patent related to the present invention mainly contains following:
1, the patent No. is CN200820082111.1, name is called " brush closed automobile generator ", this patent discloses a kind of brush closed automobile generator, comprise rotor assembly, end cap, dust cover, bearing and collector ring are installed in rotating shaft, between described bearing and end cap, be provided with the bearing current collection ring set that can seal bearing, collector ring and rotating shaft end face, bearing collector ring puts and is provided with rectangle window, rectangle window is provided with rubber gasket, brush assembly is inserted on rectangle window through rubber gasket endoporus, and brush matches with collector ring; Rubber gasket is provided with the rectangular recess matching with rectangle window.
2, the patent No. is CN201220255738.9, and name is called " a kind of automobile current generator electric brush mounting structure ", and this patent discloses a kind of automobile current generator electric brush mounting structure.Comprise collector ring, brush carrier, brush, spring, brush wire, it is characterized in that: in brush carrier, be placed with brush, the end of brush is welded with brush wire, on brush wire, cover has spring, the upper top of spring is with to be arranged on insulation board on brush carrier relative, and brush wire welds through insulation board and a tab, offers sleeve joint hole on tab, sleeve joint hole is socketed on the connector lug being fixed on brush carrier, and tab and connector lug are welded to connect.It is characterized in that: the sleeve joint hole on tab is greater than the overall dimension of connector lug.
3, the patent No. is CN201220604144.4, and name is called " generator brush protector ", and this patent discloses a kind of generator brush protector.Described generator brush protector is a kind of a kind of protective device that is fixed on commutator end bearing support bracket protection brush part, is arranged on commutator end bearing support bracket, forms an assembly with generator.To solve prior art generator brush, expose, easily cause dust, rainwater etc. to enter brush, cause generator failure.Described motor brush protector is directly connected by brush attachment panel, the effect being isolated from the outside to reach generator brush part.
4, the patent No. is CN201120340994.3, and name is called " the brush generator of vehicle electric ", and this patent discloses the brush generator of a kind of vehicle electric.It comprises housing, adjuster, establishes rotor and stator in housing, peripheral hardware brush carrier, and brush carrier is provided with brush, and described outside is provided with closed chamber, seal cover, and it is indoor that brush carrier and brush are positioned at sealing.Further, described adjuster is fixed on the outside of housing, is fixed with fin on adjuster.
Although above-mentioned these patents all relate to the structure of brush, second basic protection that does not just relate to brush of patent; Although first and the 4th patent have related to the protection of brush, but can find out by analyzing, the hermetically-sealed construction that the hermetically-sealed construction that described in two patents, method relates to relates to from the inventive method is completely different in form, and has the shortcoming of aforementioned said " complex structure, cost higher "; The hermetically-sealed construction that the hermetically-sealed construction that described in the 3rd patent, method relates to and the inventive method relate to has some general character in form, but its applicable product scope is not completely within the applicable product scope of the inventive method.
Summary of the invention
The object of the invention is to for the existing some shortcomings in current automobile generating electromechanical brush protection aspect, a kind of means of defence and device of new automobile generating electromechanical brush are proposed, the means of defence of this kind of automobile generating electromechanical brush and device are structure and the parts that utilizes generator itself, and form simply but can realize sealing very effectively.
For realizing object of the present invention, the implementer's case proposing is a kind of automobile generating electromechanical brush means of defence, generator brush is placed in to an enclosed cavity indoor, the adverse effect by airtight chamber's isolating exterior environment to generator brush, and then implement protection; It is characterized in that, describedly generator brush is placed in to indoor the referring to of enclosed cavity generator brush is arranged between commutator end bearing support bracket, brush box, sealing gasket, wind deflector, collector ring, armature spindle and is coordinated in the airtight chamber forming, during generator work, can avoid to greatest extent dust in external environment condition, muddy water or the adverse effect of other small foreign matter to generator brush, thereby reduce generator failure rate, extend generator useful life.
Further, described commutator end bearing support bracket is an aluminum alloy part, and its wall thickness forms independently bearing chamber, has blocked dust, muddy water or other small foreign matter and enter in described airtight chamber from commutator end bearing support bracket when bearing seal is protected; Described wind deflector is the part of a plastic material, and its main part is a notched hollow cylindrical body; Described notched hollow cylindrical body is on cylinder body wall, to establish a breach to be used for assembling described brush box, and notch length and hollow cylindrical body are isometric, and it is wide that width and described brush box brush stretch out face; Described notched hollow cylindrical body one end coordinates with described commutator end bearing support bracket by described sealing gasket, the other end is designed with a notched hollow cylinder boss, described notched hollow cylinder boss is the part stretching out from the wall thickness of described notched hollow cylindrical body, and its breach is consistent with notched hollow cylindrical body; Described brush box is the cavity plastic material part of a hollow, cuboid, be used for installing, holding brush, described in during assembling, brush box is assembled to the indentation, there of described notched hollow cylindrical body, has just filled up the breach of described notched hollow cylindrical body and has mutually formed a complete hollow cylindrical body; Cavity other three face except the face that brush stretches out that is used for installing, holding brush seals, brush stretches out the both sides of face and forms and coordinate with the breach both sides on notched hollow cylindrical body on described wind deflector, assemble latter two and closely cooperate and realize the sealing between brush box and wind deflector, blocking-up dust, muddy water or other small foreign matter enter in airtight chamber from the gap between brush box and wind deflector; Described collector ring is a part sub-unit, its part that participates in sealing is collector ring body, described its material of collector ring body is plastics, structure is on hollow circular cylinder, to be designed with discoidal back-shaped groove, described hollow circular cylinder press-fits and coordinates the sealing realizing between collector ring and axle with armature spindle interference, the back-shaped groove of described disc coordinates with described complete hollow cylinder boss, form a dynamic sealing device, dynamically block dust, muddy water or other small foreign matter and enter in airtight chamber by the gap between wind deflector, brush box and collector ring.
Further, described dynamic sealing device is by described complete hollow cylindrical body, the back-shaped groove of complete hollow cylinder boss and the disc of described collector ring forms, described complete hollow cylinder boss is inserted in the back-shaped groove of described disc but does not contact back-shaped groove, both keep a very little gap, to guarantee that collector ring is during with rotor, the described complete hollow cylindrical body not rotating, between the back-shaped groove of disc of complete hollow cylinder boss and the described collector ring of rotation, form a movable sealing, so both guaranteed the rotation of rotor, dynamically blocked again dust, muddy water or other small foreign matter enter in airtight chamber from the gap between wind deflector and collector ring.
The automobile generating electromechanical brush protector proposing according to said method is: a kind of automobile generating electromechanical brush protector, comprise commutator end bearing support bracket, brush box, sealing gasket, wind deflector, collector ring, armature spindle, pass through commutator end bearing support bracket, brush box, sealing gasket, wind deflector, collector ring, armature spindle complements each other to form an airtight chamber by when assembling, during generator work, generator brush contacts conduction in sealed chamber, both can guarantee rotating freely of rotor, can block in all its bearings again dust, muddy water or other small foreign matter enter in airtight chamber between armature spindle and collector ring, the seal protection of realization to brush.
Further, described commutator end bearing support bracket is an aluminum alloy part, and its wall thickness forms independently bearing chamber; Described wind deflector is the part of a plastic material, and its main part is a notched hollow cylindrical body; Described notched hollow cylindrical body is on cylinder body wall, to establish a breach to be used for assembling described brush box, and notch length and hollow cylindrical body are isometric, and it is wide that width and described brush box brush stretch out face; Described notched hollow cylindrical body one end coordinates with described commutator end bearing support bracket by described sealing gasket, the other end is designed with a notched hollow cylinder boss, described notched hollow cylinder boss is the part stretching out from the wall thickness of described notched hollow cylindrical body, and its breach is consistent with notched hollow cylindrical body; Described brush box is the cavity plastic material part of a hollow, cuboid, be used for installing, holding brush, described in during assembling, brush box is assembled to the indentation, there of described notched hollow cylindrical body, has just filled up the breach of described notched hollow cylindrical body and has mutually formed a complete hollow cylindrical body; Cavity other three face except the face that brush stretches out that is used for installing, holding brush seals, brush stretches out the both sides of face and forms and coordinate with the breach both sides on notched hollow cylindrical body on described wind deflector, assemble latter two and closely cooperate and realize the sealing between brush box and wind deflector, blocking-up dust, muddy water or other small foreign matter enter in airtight chamber from the gap between brush box and wind deflector; Described collector ring is a part sub-unit, its part that participates in sealing is collector ring body, described its material of collector ring body is plastics, structure is on hollow circular cylinder, to be designed with discoidal back-shaped groove, described hollow circular cylinder press-fits and coordinates the sealing realizing between collector ring and axle with armature spindle interference, the back-shaped groove of described disc coordinates with described complete hollow cylinder boss, form a dynamic sealing device, dynamically block dust, muddy water or other small foreign matter and enter in airtight chamber by the gap between wind deflector, brush box and collector ring.
Further, the thickness of described notched its thin-walled of hollow cylindrical body is 2-3mm, and length is 20-40mm; The thickness of described notched its thin-walled of hollow cylinder boss is 1-1.5mm, and length is 3-5mm, and internal diameter overlaps with described notched hollow cylindrical body; Described notched hollow cylinder boss coordinates with the back-shaped groove of described collector ring.
Further, one end of described brush box is formed and coordinates with commutator end bearing support bracket by described sealing gasket, on the other end of described brush box, also there is a small boss, its wall thickness, length, internal diameter are consistent with described notched hollow cylinder boss, and after assembling, this small boss has just been filled up the breach of described notched hollow cylinder boss and mutually formed a complete hollow cylinder boss; Described small boss coordinates with the back-shaped groove of described collector ring.
Further, described sealing gasket is the part of a quality of rubber materials, it is arranged on the seam crossing between commutator end bearing support bracket and wind deflector, brush box, realize the sealing of this seam crossing, blocking-up dust, muddy water or other small foreign matter enter in airtight chamber by commutator end bearing support bracket and wind deflector seam crossing.
Further, described dynamic sealing device is by described complete hollow cylindrical body, the back-shaped groove of complete hollow cylinder boss and the disc of described collector ring forms, described complete hollow cylinder boss is inserted in the back-shaped groove of described disc but does not contact back-shaped groove, both keep a very little gap, to guarantee that collector ring is during with rotor, the described complete hollow cylindrical body not rotating, between the back-shaped groove of disc of complete hollow cylinder boss and the described collector ring of rotation, form a movable sealing, so both guaranteed the rotation of rotor, dynamically blocked again dust, muddy water or other small foreign matter enter in airtight chamber from the gap between wind deflector and collector ring.
Further, described armature spindle, it press-fits with the interference of collector ring body the position coordinating and requires annular knurl, the interference when press-fiting of this annular knurl embeds collector ring body, not only realize the fixing of collector ring but also realize the sealing between collector ring and armature spindle, blocking-up dust, muddy water or other small foreign matter enter in airtight chamber between armature spindle and collector ring.
The invention has the advantages that: the structure and the part that utilize generator itself, pass through commutator end bearing support bracket, brush box, sealing gasket, wind deflector, collector ring, sealing all linked with one another between armature spindle, form a sealed chamber, the brush being assemblied in brush box is operated in this sealed chamber, both can realize rotating freely of rotor, can block in all its bearings again dust, muddy water or other small foreign matter enter in airtight chamber, the seal protection of realization to brush, thereby the failure rate of generator brush reduces greatly, just significantly promote useful life, and then significantly promote the useful life that guarantees generator.Generator work time can be avoided dust in external environment condition, muddy water or the adverse effect of other small foreign matter to generator brush to greatest extent, thereby reduces generator failure rate, extends generator useful life.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention will be further described.
By accompanying drawing, can find out, the present invention relates to a kind of automobile generating electromechanical brush means of defence, generator brush is placed in to an enclosed cavity indoor, the adverse effect by airtight chamber's isolating exterior environment to generator brush, and then implement protection; It is characterized in that, describedly generator brush is placed in to indoor the referring to of enclosed cavity generator brush is arranged between commutator end bearing support bracket, brush box, sealing gasket, wind deflector, collector ring, armature spindle and is coordinated in the airtight chamber forming, during generator work, can avoid to greatest extent dust in external environment condition, muddy water or the adverse effect of other small foreign matter to generator brush, thereby reduce generator failure rate, extend generator useful life.
Further, described commutator end bearing support bracket is an aluminum alloy part, and its wall thickness forms independently bearing chamber, has blocked dust, muddy water or other small foreign matter and enter in described airtight chamber from commutator end bearing support bracket when bearing seal is protected; Described wind deflector is the part of a plastic material, and its main part is a notched hollow cylindrical body; Described notched hollow cylindrical body is on cylinder body wall, to establish a breach to be used for assembling described brush box, and notch length and hollow cylindrical body are isometric, and it is wide that width and described brush box brush stretch out face; Described notched hollow cylindrical body one end coordinates with described commutator end bearing support bracket by described sealing gasket, the other end is designed with a notched hollow cylinder boss, described notched hollow cylinder boss is the part stretching out from the wall thickness of described notched hollow cylindrical body, and its breach is consistent with notched hollow cylindrical body; Described brush box is the cavity plastic material part of a hollow, cuboid, be used for installing, holding brush, described in during assembling, brush box is assembled to the indentation, there of described notched hollow cylindrical body, has just filled up the breach of described notched hollow cylindrical body and has mutually formed a complete hollow cylindrical body; Cavity other three face except the face that brush stretches out that is used for installing, holding brush seals, brush stretches out the both sides of face and forms and coordinate with the breach both sides on notched hollow cylindrical body on described wind deflector, assemble latter two and closely cooperate and realize the sealing between brush box and wind deflector, blocking-up dust, muddy water or other small foreign matter enter in airtight chamber from the gap between brush box and wind deflector; Described collector ring is a part sub-unit, its part that participates in sealing is collector ring body, described its material of collector ring body is plastics, structure is on hollow circular cylinder, to be designed with discoidal back-shaped groove, described hollow circular cylinder press-fits and coordinates the sealing realizing between collector ring and axle with armature spindle interference, the back-shaped groove of described disc coordinates with described complete hollow cylinder boss, form a dynamic sealing device, dynamically block dust, muddy water or other small foreign matter and enter in airtight chamber by the gap between wind deflector, brush box and collector ring.
Further, described dynamic sealing device is by described complete hollow cylindrical body, the back-shaped groove of complete hollow cylinder boss and the disc of described collector ring forms, described complete hollow cylinder boss is inserted in the back-shaped groove of described disc but does not contact back-shaped groove, both keep a very little gap, to guarantee that collector ring is during with rotor, the described complete hollow cylindrical body not rotating, between the back-shaped groove of disc of complete hollow cylinder boss and the described collector ring of rotation, form a movable sealing, so both guaranteed the rotation of rotor, dynamically blocked again dust, muddy water or other small foreign matter enter in airtight chamber from the gap between wind deflector and collector ring.
The automobile generating electromechanical brush protector proposing according to said method is: a kind of automobile generating electromechanical brush protector, comprise commutator end bearing support bracket, brush box, sealing gasket, wind deflector, collector ring, armature spindle, pass through commutator end bearing support bracket, brush box, sealing gasket, wind deflector, collector ring, armature spindle complements each other to form an airtight chamber by when assembling, during generator work, generator brush contacts conduction in sealed chamber, both can guarantee rotating freely of rotor, can block in all its bearings again dust, muddy water or other small foreign matter enter in airtight chamber between armature spindle and collector ring, the seal protection of realization to brush.
Further, described commutator end bearing support bracket is an aluminum alloy part, and its wall thickness forms independently bearing chamber; Described wind deflector is the part of a plastic material, and its main part is a notched hollow cylindrical body; Described notched hollow cylindrical body is on cylinder body wall, to establish a breach to be used for assembling described brush box, and notch length and hollow cylindrical body are isometric, and it is wide that width and described brush box brush stretch out face; Described notched hollow cylindrical body one end coordinates with described commutator end bearing support bracket by described sealing gasket, the other end is designed with a notched hollow cylinder boss, described notched hollow cylinder boss is the part stretching out from the wall thickness of described notched hollow cylindrical body, and its breach is consistent with notched hollow cylindrical body; Described brush box is the cavity plastic material part of a hollow, cuboid, be used for installing, holding brush, described in during assembling, brush box is assembled to the indentation, there of described notched hollow cylindrical body, has just filled up the breach of described notched hollow cylindrical body and has mutually formed a complete hollow cylindrical body; Cavity other three face except the face that brush stretches out that is used for installing, holding brush seals, brush stretches out the both sides of face and forms and coordinate with the breach both sides on notched hollow cylindrical body on described wind deflector, assemble latter two and closely cooperate and realize the sealing between brush box and wind deflector, blocking-up dust, muddy water or other small foreign matter enter in airtight chamber from the gap between brush box and wind deflector; Described collector ring is a part sub-unit, its part that participates in sealing is collector ring body, described its material of collector ring body is plastics, structure is on hollow circular cylinder, to be designed with discoidal back-shaped groove, described hollow circular cylinder press-fits and coordinates the sealing realizing between collector ring and axle with armature spindle interference, the back-shaped groove of described disc coordinates with described complete hollow cylinder boss, form a dynamic sealing device, dynamically block dust, muddy water or other small foreign matter and enter in airtight chamber by the gap between wind deflector, brush box and collector ring.
Further, the thickness of described notched its thin-walled of hollow cylindrical body is 2-3mm, and length is 20-40mm; The thickness of described notched its thin-walled of hollow cylinder boss is 1-1.5mm, and length is 3-5mm, and internal diameter overlaps with described notched hollow cylindrical body; Described notched hollow cylinder boss coordinates with the back-shaped groove of described collector ring.
Further, one end of described brush box is formed and coordinates with commutator end bearing support bracket by described sealing gasket, on the other end of described brush box, also there is a small boss, its wall thickness, length, internal diameter are consistent with described notched hollow cylinder boss, and after assembling, this small boss has just been filled up the breach of described notched hollow cylinder boss and mutually formed a complete hollow cylinder boss; Described small boss coordinates with the back-shaped groove of described collector ring.
Further, described sealing gasket is the part of a quality of rubber materials, it is arranged on the seam crossing between commutator end bearing support bracket and wind deflector, brush box, realize the sealing of this seam crossing, blocking-up dust, muddy water or other small foreign matter enter in airtight chamber by commutator end bearing support bracket and wind deflector seam crossing.
Further, described dynamic sealing device is by described complete hollow cylindrical body, the back-shaped groove of complete hollow cylinder boss and the disc of described collector ring forms, described complete hollow cylinder boss is inserted in the back-shaped groove of described disc but does not contact back-shaped groove, both keep a very little gap, to guarantee that collector ring is during with rotor, the described complete hollow cylindrical body not rotating, between the back-shaped groove of disc of complete hollow cylinder boss and the described collector ring of rotation, form a movable sealing, so both guaranteed the rotation of rotor, dynamically blocked again dust, muddy water or other small foreign matter enter in airtight chamber from the gap between wind deflector and collector ring.
Further, described armature spindle, it press-fits with the interference of collector ring body the position coordinating and requires annular knurl, the interference when press-fiting of this annular knurl embeds collector ring body, not only realize the fixing of collector ring but also realize the sealing between collector ring and armature spindle, blocking-up dust, muddy water or other small foreign matter enter in airtight chamber between armature spindle and collector ring.
Embodiment mono-
Accompanying drawing 1 has provided a specific embodiment of the present invention, from accompanying drawing 1, can find out that the present invention is a kind of protector of automobile generating electromechanical brush means of defence, comprise automobile generator rotor 9, generator rear bearing 5, commutator end bearing support bracket 2, generator brush 3 and generator brush box 1, generator rear bearing 5 is arranged in the bearing pedestal of commutator end bearing support bracket 2, generator brush 3 is arranged in generator brush box 1, and generator brush 3 contacts with the collector ring 4 being arranged on generator amature; The bearing pedestal of described commutator end bearing support bracket 2 is blind hole shape bearing pedestals of a sealing, and generator rear bearing 5 is arranged in the blind hole shape bearing pedestal of sealing, and generator rear bearing 5 is isolated from the outside; Generator brush box 1 is fixed together by securing member and commutator end bearing support bracket 2, and the seam crossing between commutator end bearing support bracket 2 and generator brush box 1 seals by sealing gasket; Between generator wind deflector 8 and collector ring body 6, be provided with dynamic sealing device; By commutator end bearing support bracket 5, make generator brush in airtight environment with the airtight chamber that generator brush box 1, wind deflector 8, collector ring 4 and machine shaft 9 are combined to form.
Further, described dynamic sealing device is by the complete hollow cylindrical body of wind deflector 8, complete hollow cylinder boss 11 and the back-shaped groove 10 of the disc of described collector ring 4 form, described complete hollow cylinder boss 11 is inserted in the back-shaped groove 10 of described disc but does not contact back-shaped groove, both keep a very little process gap, to guarantee that collector ring 4 is during with rotor, do not rotate wind deflector 8, described complete hollow cylindrical body, between the back-shaped groove of disc of complete hollow cylinder boss and the described collector ring of rotation, form a movable sealing, so both guaranteed the rotation of rotor, dynamically blocked again dust, muddy water or other small foreign matter enter in airtight chamber from the gap between wind deflector and brush box and collector ring.
Further, between described wind deflector 8 and commutator end bearing support bracket 2, be provided with sealing gasket 7.
Embodiment bis-
The basic structure territory embodiment mono-of embodiment bis-is the same, be described dynamic sealing device be reverse setting; The back-shaped groove 10 of disc is arranged on wind deflector 8, on collector ring body 6, convex is set, and the convex on collector ring body 6 inserts in the back-shaped groove 10 of disc on wind deflector 8.So both guaranteed the rotation of rotor, and dynamically blocked again dust, muddy water or other small foreign matter and entered in airtight chamber from the gap between wind deflector and brush box and collector ring.
Protection principle of the present invention is:
By accompanying drawing, can find out, the present invention is by an airtight chamber being combined to form, and makes generator brush in automobile current generator in the environment in a kind of sealing; Utilize the wall thickness of bonnet to form independently bearing chamber, first bearing seal is protected, blocked " the rear passage " of foreign matter and water simultaneously; Arrive again the sealing gasket of seam crossing forward, blocked " the middle passage " of foreign matter and water; Arrive back-shaped ditch forward, back-shaped ditch is a design cleverly again, and it combines the rotor of actionless wind deflector and rotation, has both guaranteed rotation, has blocked again " prepass " of foreign matter and water.Blocked after these three passages, the brush of generator is just worked in the region of sealing at one relatively by " isolation " closely, be difficult to by extraneous come foreign matter and water erosion, thereby its failure rate reduces greatly, just significantly promote useful life, and then guarantee that significantly promote the useful life of generator.
The present invention is for there being good effect the useful life of improving the degree of protection of automobile current generator, the job failure that reduces generator, prolongation generator.Adopt this structural design to protect brush, can extend generator useful life more than 20%.
Claims (10)
1. an automobile generating electromechanical brush means of defence, is placed in an enclosed cavity by generator brush indoor, the adverse effect by airtight chamber's isolating exterior environment to generator brush, and then implement protection; It is characterized in that, describedly generator brush is placed in to indoor the referring to of enclosed cavity generator brush is arranged between commutator end bearing support bracket, brush box, sealing gasket, wind deflector, collector ring, armature spindle and is coordinated in the airtight chamber forming, during generator work, can avoid to greatest extent dust in external environment condition, muddy water or the adverse effect of other small foreign matter to generator brush, thereby reduce generator failure rate, extend generator useful life.
2. automobile generating electromechanical brush means of defence according to claim 1, it is characterized in that, described commutator end bearing support bracket is an aluminum alloy part, its wall thickness forms independently bearing chamber, has blocked dust, muddy water or other small foreign matter and enter in described airtight chamber from commutator end bearing support bracket when bearing seal is protected; Described wind deflector is the part of a plastic material, and its main part is a notched hollow cylindrical body; Described notched hollow cylindrical body is on cylinder body wall, to establish a breach to be used for assembling described brush box, and notch length and hollow cylindrical body are isometric, and it is wide that width and described brush box brush stretch out face; Described notched hollow cylindrical body one end coordinates with described commutator end bearing support bracket by described sealing gasket, the other end is designed with a notched hollow cylinder boss, described notched hollow cylinder boss is the part stretching out from the wall thickness of described notched hollow cylindrical body, and its breach is consistent with notched hollow cylindrical body; Described brush box is the cavity plastic material part of a hollow, cuboid, be used for installing, holding brush, described in during assembling, brush box is assembled to the indentation, there of described notched hollow cylindrical body, has just filled up the breach of described notched hollow cylindrical body and has mutually formed a complete hollow cylindrical body; Cavity other three face except the face that brush stretches out that is used for installing, holding brush seals, brush stretches out the both sides of face and forms and coordinate with the breach both sides on notched hollow cylindrical body on described wind deflector, assemble latter two and closely cooperate and realize the sealing between brush box and wind deflector, blocking-up dust, muddy water or other small foreign matter enter in airtight chamber from the gap between brush box and wind deflector; Described collector ring is a part sub-unit, its part that participates in sealing is collector ring body, described its material of collector ring body is plastics, structure is on hollow circular cylinder, to be designed with discoidal back-shaped groove, described hollow circular cylinder press-fits and coordinates the sealing realizing between collector ring and axle with armature spindle interference, the back-shaped groove of described disc coordinates with described complete hollow cylinder boss, form a dynamic sealing device, dynamically block dust, muddy water or other small foreign matter and enter in airtight chamber by the gap between wind deflector, brush box and collector ring.
3. automobile generating electromechanical brush means of defence according to claim 2, it is characterized in that, described dynamic sealing device is by described complete hollow cylindrical body, the back-shaped groove of complete hollow cylinder boss and the disc of described collector ring forms, described complete hollow cylinder boss is inserted in the back-shaped groove of described disc but does not contact back-shaped groove, both keep a very little gap, to guarantee that collector ring is during with rotor, the described complete hollow cylindrical body not rotating, between the back-shaped groove of disc of complete hollow cylinder boss and the described collector ring of rotation, form a movable sealing, so both guaranteed the rotation of rotor, dynamically blocked again dust, muddy water or other small foreign matter enter in airtight chamber from the gap between wind deflector and collector ring.
4. realize the automobile generating electromechanical brush protector of method described in claim 1 for one kind, comprise commutator end bearing support bracket, brush box, sealing gasket, wind deflector, collector ring, armature spindle, pass through commutator end bearing support bracket, brush box, sealing gasket, wind deflector, collector ring, armature spindle complements each other to form an airtight chamber by when assembling, during generator work, generator brush contacts conduction in sealed chamber, both can guarantee rotating freely of rotor, can block in all its bearings again dust, muddy water or other small foreign matter enter in airtight chamber between armature spindle and collector ring, the seal protection of realization to brush.
5. automobile generating electromechanical brush protector according to claim 4, is characterized in that, described commutator end bearing support bracket is an aluminum alloy part, and its wall thickness forms independently bearing chamber; Described wind deflector is the part of a plastic material, and its main part is a notched hollow cylindrical body; Described notched hollow cylindrical body is on cylinder body wall, to establish a breach to be used for assembling described brush box, and notch length and hollow cylindrical body are isometric, and it is wide that width and described brush box brush stretch out face; Described notched hollow cylindrical body one end coordinates with described commutator end bearing support bracket by described sealing gasket, the other end is designed with a notched hollow cylinder boss, described notched hollow cylinder boss is the part stretching out from the wall thickness of described notched hollow cylindrical body, and its breach is consistent with notched hollow cylindrical body; Described brush box is the cavity plastic material part of a hollow, cuboid, be used for installing, holding brush, described in during assembling, brush box is assembled to the indentation, there of described notched hollow cylindrical body, has just filled up the breach of described notched hollow cylindrical body and has mutually formed a complete hollow cylindrical body; Cavity other three face except the face that brush stretches out that is used for installing, holding brush seals, brush stretches out the both sides of face and forms and coordinate with the breach both sides on notched hollow cylindrical body on described wind deflector, assemble latter two and closely cooperate and realize the sealing between brush box and wind deflector, blocking-up dust, muddy water or other small foreign matter enter in airtight chamber from the gap between brush box and wind deflector; Described collector ring is a part sub-unit, its part that participates in sealing is collector ring body, described its material of collector ring body is plastics, structure is on hollow circular cylinder, to be designed with discoidal back-shaped groove, described hollow circular cylinder press-fits and coordinates the sealing realizing between collector ring and axle with armature spindle interference, the back-shaped groove of described disc coordinates with described complete hollow cylinder boss, form a dynamic sealing device, dynamically block dust, muddy water or other small foreign matter and enter in airtight chamber by the gap between wind deflector, brush box and collector ring.
6. automobile generating electromechanical brush protector according to claim 5, is characterized in that, the thickness of described notched its thin-walled of hollow cylindrical body is 2-3mm, and length is 20-40mm; The thickness of described notched its thin-walled of hollow cylinder boss is 1-1.5mm, and length is 3-5mm, and internal diameter overlaps with described notched hollow cylindrical body; Described notched hollow cylinder boss coordinates with the back-shaped groove of described collector ring.
7. automobile generating electromechanical brush protector according to claim 5, it is characterized in that, one end of described brush box is formed and coordinates with commutator end bearing support bracket by described sealing gasket, on the other end of described brush box, also there is a small boss, its wall thickness, length, internal diameter are consistent with described notched hollow cylinder boss, and after assembling, this small boss has just been filled up the breach of described notched hollow cylinder boss and mutually formed a complete hollow cylinder boss; Described small boss coordinates with the back-shaped groove of described collector ring.
8. automobile generating electromechanical brush protector according to claim 4, it is characterized in that, described sealing gasket is the part of a quality of rubber materials, it is arranged on the seam crossing between commutator end bearing support bracket and wind deflector, brush box, realize the sealing of this seam crossing, blocking-up dust, muddy water or other small foreign matter enter in airtight chamber by commutator end bearing support bracket and wind deflector seam crossing.
9. automobile generating electromechanical brush protector according to claim 4, it is characterized in that, described dynamic sealing device is by described complete hollow cylindrical body, the back-shaped groove of complete hollow cylinder boss and the disc of described collector ring forms, described complete hollow cylinder boss is inserted in the back-shaped groove of described disc but does not contact back-shaped groove, both keep a very little gap, to guarantee that collector ring is during with rotor, the described complete hollow cylindrical body not rotating, between the back-shaped groove of disc of complete hollow cylinder boss and the described collector ring of rotation, form a movable sealing, so both guaranteed the rotation of rotor, dynamically blocked again dust, muddy water or other small foreign matter enter in airtight chamber from the gap between wind deflector and collector ring.
10. automobile generating electromechanical brush means of defence according to claim 4, it is characterized in that, described armature spindle, it press-fits with the interference of collector ring body the position coordinating and requires annular knurl, the interference when press-fiting of this annular knurl embeds collector ring body, not only realize the fixing of collector ring but also realize the sealing between collector ring and armature spindle, blocking-up dust, muddy water or other small foreign matter enter in airtight chamber between armature spindle and collector ring.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410051173.6A CN103746497B (en) | 2014-02-14 | 2014-02-14 | Method and device for protecting electric brush of power generator of vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410051173.6A CN103746497B (en) | 2014-02-14 | 2014-02-14 | Method and device for protecting electric brush of power generator of vehicle |
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| CN103746497A true CN103746497A (en) | 2014-04-23 |
| CN103746497B CN103746497B (en) | 2017-03-22 |
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| CN109510368A (en) * | 2018-12-26 | 2019-03-22 | 新疆金风科技股份有限公司 | Wind power generating set and its generator, sealing protection mechanism |
| CN110429740A (en) * | 2019-08-28 | 2019-11-08 | 福建福清核电有限公司 | A kind of dust-protection type generator rotor insulation monitoring brushgear |
| CN110545002A (en) * | 2018-05-28 | 2019-12-06 | 法雷奥电机设备公司 | Sealed motor vehicle starter with angularly wedged brush-holder gasket |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104354047A (en) * | 2014-05-06 | 2015-02-18 | 兰州兰石重型装备股份有限公司 | Machining device for flange sealing surface |
| CN110545002A (en) * | 2018-05-28 | 2019-12-06 | 法雷奥电机设备公司 | Sealed motor vehicle starter with angularly wedged brush-holder gasket |
| CN110545002B (en) * | 2018-05-28 | 2021-07-23 | 法雷奥电机设备公司 | Sealed motor vehicle starter with angularly wedged brush-holder gasket |
| CN109510368A (en) * | 2018-12-26 | 2019-03-22 | 新疆金风科技股份有限公司 | Wind power generating set and its generator, sealing protection mechanism |
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| CN110429740B (en) * | 2019-08-28 | 2024-04-09 | 福建福清核电有限公司 | Dustproof generator rotor insulation monitoring brush device |
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| CN103746497B (en) | 2017-03-22 |
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Address after: 412001, Hongqi Road 68, lotus pond District, Hunan, Zhuzhou Patentee after: Weichai torch Technology Co.,Ltd. Address before: 412001, Hongqi Road 68, lotus pond District, Hunan, Zhuzhou Patentee before: ZHUZHOU TORCH SPARKPLUG Co.,Ltd. |
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