CN1303744C - A.C. generator - Google Patents

A.C. generator Download PDF

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Publication number
CN1303744C
CN1303744C CNB021278350A CN02127835A CN1303744C CN 1303744 C CN1303744 C CN 1303744C CN B021278350 A CNB021278350 A CN B021278350A CN 02127835 A CN02127835 A CN 02127835A CN 1303744 C CN1303744 C CN 1303744C
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CN
China
Prior art keywords
brush
rotor
stator
alternating current
brush holder
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Expired - Lifetime
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CNB021278350A
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Chinese (zh)
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CN1472870A (en
Inventor
高桥智纪
森角英规
浅尾淑人
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Priority to CNB021278350A priority Critical patent/CN1303744C/en
Publication of CN1472870A publication Critical patent/CN1472870A/en
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Publication of CN1303744C publication Critical patent/CN1303744C/en
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Abstract

The present invention relates to an AC generator with the easy replacement of an electric brush and high cooling efficiency. The AC generator is provided with a box body (33), a rotor, a stator (8), an electric brush (10) and an electric brush holding device (100), wherein a rotor, the rotor comprises a rotor winding (18) arranged in the box body (33), and a plurality of claw-shaped magnetic poles (22 and 23) covering the rotor winding (18), and the N poles and the S poles are excited through magnetic conduction; the stator comprises a stator iron core (24) with a cutting groove, and a stator winding (25) arranged on the stator iron core (24).; a current from a power supply is supplied for the electric brush (10) of a rotor winding (18); the electric brush holding device (100) is fixed on the box body (33), the electric brush holding device is provided with a holding part (11a) holding the electric brush (10) and a cover (11b); the position of the box body (33) corresponding to the cover (11b) is provided with an opening part (50) for the passing of the electric brush (10).

Description

Alternating current generator
Technical field
The invention relates to the alternating current generator of a kind of suitable work by oil-engine driven vehicle-mounted dlternator.
Technical background
Figure 18 is the cutaway view of existing vehicle-mounted dlternator.Figure 19 is the inside elevation view of the alternating current generator of Figure 18.Figure 20 is the oblique view of rotor of the alternating current generator of Figure 18.Figure 21 is the oblique view of stator of the alternating current generator of Figure 18.
This type of generator is provided with: the casing 3 that is made of aluminum front rack and tail-bracket; Be located in the casing 3, an end is fixed with the rotating shaft 6 of belt pulley 4; Be fixed on blue Dare (randall) the type rotor 7 on this rotating shaft 6; Be fixed on fan 5a, the 5b of the two sides of rotor 7; Be fixed on the stator 8 on the internal face in the casing 3; Be fixed on another one of rotating shaft 6, and the slip ring 9 of electric current is provided to rotor 7; The a pair of brush 10 that on the surface of slip ring 9, slides; The end is connected the winding 17 on this brush 10; Brush 10 is pressed in the spring 16 of slip ring 9 sides; Brush holder 100, described brush holder are provided with the lid 11b of maintaining part 11a that accommodates brush 10 and the head of removably being located at maintaining part 11a; Chargedly be connected on the stator 8 and be the rectifier 12 of direct current the AC rectification that stator 8 is produced; Be fixed on the brush holder 100 adjuster 13 of the alternating voltage size that adjustment stator 8 is produced; Butt, be fixed on this adjuster 13 coldplate 14 of the heat that be used to distribute, cooler regulator 13 produces.
Rotor 7 is provided with: the rotor winding 18 that flows through electric current, generation magnetic flux; Cover this rotor winding 18, utilize this magnetic flux to form the pole core 19 of magnetic pole.Pole core 19 is made of a pair of intermeshing the 1st pole core portion 20 and the 2nd pole core portion 21.The 1st thin claw-like magnetic pole 22 of front end that the 1st pole core 20 is provided with is iron, extend at axis direction.That the 2nd magnetic core 21 is provided with is iron, the 2nd thin claw-like magnetic pole 23 of front end 22 relative with the 1st claw-like magnetic pole, that extend along axis direction.
Stator 8 is provided with: by the rotating magnetic field from rotor winding 18 is arranged, and the stator core 24 that constitutes by stacked polylith steel plate; Flow through 3 phase stator winding 25 of output current.Stator core 24 by ring-shaped core backing plate (core back) 26, and constitute with a plurality of service tees 27 that uniformly-spaced extend from this magnetic core backing plate 26 to the inner sides of radius direction at circumferencial direction.Take in that the enamel-cover lead twines multi-turn and the stator winding 25 that forms at the groove 28 that is positioned at 27 of all adjacent service tees, be formed at 36 places.
In the vehicle-mounted dlternator of above-mentioned formation, from as the battery (not shown) of power supply through brush 10, slip ring 9, to rotor winding 18 supply of current, produce magnetic flux, form magnetic field.In addition, because driven by engine belt pulley 4, under rotating shaft 6 effects, rotor 7 rotations to stator core 24 additional rotating magnetic fields, produce electromotive force on the stator winding 25 thus, produce output current under the external load effect that is connected on the vehicle-mounted dlternator.
After beginning generating, switch to so-called autoexcitation, promptly be not via battery, but the output current of part generator feed to rotor winding 18 through brush 10.
The problem that exists at the vehicle-mounted dlternator of above-mentioned formation is: because brush holder 100 is contained in the casing 3 of sealing, when desire is changed wearing and tearing brush 10, at first to decompose vehicle-mounted dlternator, brush holder is taken to casing 3, change brush 10 outside, and then pack in the casing 3 brush holder 100 into the assembling vehicle-mounted dlternator.
In addition, also the problem of Cun Zaiing has: although along with the rotation of rotor 8, produce centrifugal flows in the casing 3, because flow resistance is big, air can't flow smoothly, so the cooling effectiveness of adjuster 13 and brush 10 is not high.
Summary of the invention
The present invention does in order to address the above problem just, the objective of the invention is: but provide a kind of brush changing simple and can improve the alternating current generator of cooling effectiveness.
Technical scheme 1 described alternating current generator of the present invention is provided with: casing; The rotor that comprises rotor winding and a plurality of claw-like magnetic poles, described rotor is located in the casing, described rotor winding flows through electric current and produces magnetic flux, and described a plurality of claw-like magnetic poles extend and cover the rotor winding along axis direction, described claw-like magnetic pole by above-mentioned magnetic flux by the excitation formation N utmost point and the S utmost point by excitation; Contain the stator core of a plurality of groovings and be installed on the stator of the stator winding in this stator core, described a plurality of stator cores are extended and are formed along axis direction at certain intervals at circumferencial direction; To feed to the brush of rotor winding from the electric current of power supply; And the brush holder that is fixed on the casing, in maintaining part, brush is kept, described brush holder is provided with can be with brush openable lid when maintaining part is taken out; Relative with above-mentioned lid to the peristome used of the dismounting brush that is provided with of the position of casing.
According to technical scheme 2 described alternating current generators of the present invention, brush holder extends near the peristome.
According to technical scheme 3 described alternating current generators of the present invention, brush holder constitutes, the terminal of brush holder is integrally formed by resin mold moulding and brush holder, this terminal and be connected the brush of being installed on the electric wire on the brush and be electrically connected by connector with terminal.
According to technical scheme 4 described alternating current generators of the present invention, the terminal and the brush that connect brush holder are located at peristome with the connecting portion of terminal.
According to technical scheme 5 described alternating current generators of the present invention, described connector is a screw.
According to technical scheme 6 described alternating current generators of the present invention, at connecting portion, screw is at the circumferencial direction forward-reverse of rotor.
According to technical scheme 7 described alternating current generators of the present invention, at connecting portion, screw is at the axis direction forward-reverse of rotor.
According to technical scheme 8 described alternating current generators of the present invention, on brush holder, adjust stator and produce the adjuster of alternating voltage size and be connected to coldplate on this adjuster overlapping being provided with of the axis direction of rotor.
According to technical scheme 9 described alternating current generators of the present invention, at the coil termination of stator winding, lead extends to axis direction from the end face of stator core, along the circumferential direction forms same shape.
Description of drawings
Fig. 1 is the cutaway view of the invention process form 1 described vehicle-mounted dlternator; Fig. 2 is the view from arrow A direction finding Fig. 1 vehicle-mounted dlternator; Fig. 3 is the brush of Fig. 1 and the view that brush is used terminal; Fig. 4 is the cutaway view of the invention process form 2 described vehicle-mounted dlternators; Fig. 5 is the view from the vehicle-mounted dlternator of arrow B direction finding Fig. 4; Fig. 6 is the view from the tail-bracket side of box house finding Fig. 4; Fig. 7 is the view of brush holder of the vehicle-mounted dlternator of Fig. 4, and Fig. 7 (a) removes plane graph when covering for brush holder, and Fig. 7 (b) is the plane graph of brush holder, and Fig. 7 (c) is the front elevation of brush holder; Fig. 8 is the brush of vehicle-mounted dlternator of Fig. 4 and the brush view with terminal, and Fig. 8 (a) is a front elevation, Fig. 8 (b) be Fig. 8 (a) the right side side view; Fig. 9 is the oblique view of the lid of Fig. 4; Figure 10 is the view of Fig. 4 lid, and Figure 10 (a) is from Fig. 9 arrow C direction finding view, and Figure 10 (b) is from Fig. 9 arrow D direction finding view, and Figure 10 (c) is from Fig. 9 arrow E direction finding view, and Figure 10 (d) is from Fig. 9 arrow F direction finding view; Figure 11 is the view (but being to remove under the situation of lid) from tail-bracket side finding the invention process form 3 described vehicle-mounted dlternators; Figure 12 is the brush of vehicle-mounted dlternator of Figure 11 and the brush view with terminal, and Figure 12 (a) is its front elevation, and Figure 12 (b) is the right side side view of Figure 12 (a); Figure 13 is the oblique view of the stator of the invention process form 4 described vehicle-mounted dlternators; Figure 14 is the oblique view of conductor contact of stator winding that is applicable to the stator of Figure 13; Figure 15 is the oblique view from the significant points of the stator of front side finding Figure 13; Figure 16 is the oblique view from the significant points of the stator of rear side finding Figure 13; Figure 17 is the oblique view of variation stator of the stator of Figure 13; Figure 18 is the cutaway view of existing vehicle-mounted dlternator; Figure 19 is the view from the vehicle-mounted dlternator of tail-bracket side finding Figure 18; Figure 20 is the oblique view of the rotor of Figure 18; Figure 21 is the oblique view of the stator of Figure 18.
Among the figure, 7 is rotor; 8,70 is stator; 10 is brush; 11a, 64a are maintaining part; 11b, 64b are adjuster for covering 13; 14 is coldplate; 18 is the rotor winding; 22,23 is the claw-like magnetic pole; 24 are stator core; 25 is stator winding; 33 is casing; 50 is peristome; 52,62,67 are the brush terminal; 53 is screw; 60 are lid; 63 is terminal; 61,100 is brush holder; 71 is conductor contact; 72 are stator core; 73 is stator winding; 76 is the rear side coil termination; 77 is the front side coil termination.
Embodiment
The following describes various examples of the present invention.With existing homomorphosis or similarly member, position, all mark prosign and be illustrated.
Example 1.
Fig. 1 is a invention process form 1---the cutaway view of vehicle-mounted dlternator.Fig. 2 is the view from arrow A direction finding Fig. 1 vehicle-mounted dlternator.
This alternating current generator is provided with: by the casing 33 of 32 one-tenth of aluminum front rack 1 and butt frameworks; Be located in the casing 33, an end is fixed with the rotating shaft 6 of belt pulley 4; Be fixed on blue Dare (randall) the type rotor 7 on this rotating shaft 6; Be fixed on the fan 35 on the rotating shaft 6 in the outside of casing 33; Be fixed on the stator 8 on the internal face in the casing 33; Be fixed on the other end of rotating shaft 6, and the slip ring 9 of electric current is provided to rotor 7; The a pair of brush 10 that on the surface of slip ring 9, slides; The end is connected the winding 17 on this brush 10; Brush 10 is pressed in the spring 16 of slip ring 9 sides; Brush holder 100 is provided with maintaining part 11a that accommodates brush 10 and the lid 11b that is removable installed in the head of maintaining part 11a; Charged being connected on the stator 8, and be the rectifier 12 of direct current with the AC rectification that stator 8 is produced; Be fixed on the brush holder 100 adjuster 13 of the alternating voltage size that adjustment stator 8 is produced; Butt, be fixed on this adjuster 13 coldplate 14 of the heat that distribute, cooler regulator 13 produces.
The resin mold moulding is integrally formed to be constituted by utilizing with the terminal of doing to be electrically connected as the battery of power supply to be provided with the brush holder 100 of maintaining part 11a and lid 11b.The position that casing is relative with the lid 11b of brush holder 100 is provided with peristome 50.
As shown in Figure 3, the electric wire 17 that extends out from brush 10 is provided with and passes screw 53, by connecting elements---and the brush terminal 52 of screw on the terminal of brush holder 100.
Rotor 7 is provided with: the rotor winding 18 that flows through electric current, generation magnetic flux; Cover this rotor winding 18, utilize this magnetic flux to form the pole core 19 of magnetic pole.Pole core 19 is made of a pair of intermeshing the 1st pole core portion 20 and the 2nd pole core portion 21.The 1st thin claw-like magnetic pole 22 of front end that the 1st pole core 20 is provided with is iron, extend at axis direction.That the 2nd magnetic core 21 is provided with is iron, the 2nd thin claw-like magnetic pole 23 of front end 22 relative with the 1st claw-like magnetic pole, that extend along axis direction.
Stator 8 is provided with: by the rotating magnetic field from rotor winding 18 being arranged, the stator core 24 that is made of stacked polylith steel plate simultaneously; Flow through 3 phase stator winding 25 of output current.Stator core 24 constitutes with a plurality of service tees 27 that uniformly-spaced extend to the inner sides of radius direction at circumferencial direction by ring-shaped core backing plate (core back) 26 and from this magnetic core backing plate 26.Take in by the enamel-cover lead at the groove 28 that is positioned at 27 of all adjacent service tees, be formed at 36 places and to twine multi-turn and the stator winding 25 that forms.
In the vehicle-mounted dlternator of above-mentioned formation, from as the battery (not shown) of power supply through brush 10, slip ring 9, to rotor winding 18 supply of current, produce magnetic flux, form magnetic field.On the other hand, driven by engine belt pulley 4, under rotating shaft 6 effects, rotor 7 rotations are so to stator core 24 additional rotating magnetic fields, stator winding 25 produces electromotive force, produces output current under the external load effect that is connected on the vehicle-mounted dlternator.
In the vehicle-mounted dlternator of above-mentioned formation, be provided with peristome 50 at the position of casing 33 and the lid 11b subtend of brush holder 100.Thus, when changing brush 10, can pull down from brush holder 100 and cover the screw that 11b and screw 53 are fixed, and will the alternating current generator dismounting.And, pull down the operation of screw from screw 53 and can radially carry out.
Again, the terminal and the brush that connect brush holder 100 are located at peristome 50 places with the connecting portion of terminal 52, so the terminal that is easy to carry out brush holder 100 and brush are with being connected between the terminal 52.
Fan 35 is located at the outside of casing 33, next door at brush holder 100, the radially convection current that rotor 7 rotation is produced flow to the outside from peristome 50, can be effectively the brush 10 in the maintaining part 11a that is fixed on adjuster 13 on the brush holder 100 and brushgear 100 be cooled off.
On the brush holder 100, the axis direction of rotor 7 overlapping be provided with adjuster 13 and with the coldplate 14 of these adjuster 13 butts, so structure is very compact.Simultaneously, because overlapping at axis direction at the coldplate that is provided with fin that radially extends 14 of rotor 7 with brush, thus centrifugal flow can effectively be produced, thus effectively adjuster 13 is cooled off.And, owing to after being fixed on adjuster 13 on the brush holder 100, again brush holder 100 is fixed on the tail-bracket 2, so, when being installed in brush holder 100 on the tail-bracket 2, can not have influence on adjuster 13.
Example 2
Fig. 4 is the cutaway view of the vehicle-mounted dlternator of the present invention's the 2nd example, Fig. 5 is the view (but having pulled down lid 60) from arrow B direction finding Fig. 4 vehicle-mounted dlternator, Fig. 6 is the view of the tail-bracket side of Fig. 4 vehicle-mounted dlternator inside, Fig. 7 is the view of the brush holder 61 of Fig. 4 vehicle-mounted dlternator, Fig. 7 (a) is for pulling down the plane graph when covering 64b on brush holder 61, Fig. 7 (b) is the plane graph of brush holder 61, Fig. 7 (c) is the front elevation of brush holder 61, Fig. 8 is the brush 10 and the view of brush with terminal 63 of Fig. 4 vehicle-mounted dlternator, Fig. 8 (a) is the brush 10 and the front elevation of brush with terminal 63 of Fig. 4 vehicle-mounted dlternator, and Fig. 8 (b) is the brush 10 and the right side side view of brush with terminal 63 of Fig. 4 vehicle-mounted dlternator.
In example 2, Fig. 9 and lid 60 shown in Figure 10 are located at the peristome 50 on the tail-bracket 32.The terminal 63 of brush holder 61 exposes at peristome 50 places, and brush is fixed on this terminal 63 by screw 65 with terminal 62.The leading section of described pair of screws 65 all points to circumferencial direction.The radial dimension of the maintaining part 64a of brush holder 61 as shown in Figure 4, extends near the peristome 50 of tail-bracket 32.Again, fan 5a, 5b are fixed on the two sides of rotor 7.
Except that above-mentioned formation, other formations are identical with the vehicle-mounted dlternator of example 1.
In the vehicle-mounted dlternator of above-mentioned formation, utilize screw 60a will cover 60 and be fixed on the peristome 50, can prevent that foreign matter, water etc. from entering in the casing 33.
Brush is fixed on the terminal 63 of the brush holder 61 that peristome exposes by screw 65 with terminal 62, so terminal 63 can be realized being electrically connected with brush 10 simply, has improved the replacing operation of brush 10 simultaneously.Because this points to circumferencial direction to screw 65 leading sections, so, can use extracting tool from circumferencial direction, the moving range of instrument can not exceed the scope of the axis direction of casing 33, is fit to change the brush 10 in the intensive internal combustion engine of rotating shaft 6 axis direction parts.
Near the peristome that radially extends to tail-bracket 32 50 of brush holder 61, so can prolong the longitudinal size of brush 10, brush 10 can need not use for a long time with changing.And, because the space of 61 of tail-bracket 32 and brush holders is very little, thus the air that enter in the casing 33 from air vent hole 66 make a circulation to flow to adjuster 13, brush 10 sides more, thereby the cooling that has improved adjuster 13 and brush 10.
Different with example 1, on the side of brush holder 61 sides of rotor 7, be provided with centrifugal fan 5b, so, can produce a lot of centrifugal flows on brush holder 61 next doors.Therefore, owing to the coldplate 14 of the fin that is provided with rotor 7 footpath directions extensions is overlapping at axis direction with brush 10, and brush 10 extends near the peristome 50 of tail-bracket 32, so can further improve the ventilation effect of centrifugal flow, thereby improved cooling.
Example 3
Figure 11 is from tail-bracket 32 side finding the invention process forms 3---the view of vehicle-mounted dlternator (but, lid 60 has been removed), Figure 12 is the brush 10 and the view of brush with terminal 67 of Figure 11 vehicle-mounted dlternator, Figure 12 (a) is the brush 10 and the front elevation of brush with terminal 67 of Figure 11 vehicle-mounted dlternator, and Figure 12 (b) is the right, side view of figure (a).
In this example 3, the terminal 63 of brush holder 61 exposes at peristome 50 places, and brush is fixed on the terminal 63 by screw 65 with terminal 67.These pair of screws 65 leading sections point to axis direction.
Except that above-mentioned formation, other constitute identical with example 2 vehicle-mounted dlternators.
In the vehicle-mounted dlternator of above-mentioned formation, brush is fixed on the terminal 63 by screw 65 with terminal 67, these pair of screws 65 leading sections point to axis direction, so, can use extracting tool from axis direction, the moving range of instrument can not exceed the radial dimension scope of casing 33, is fit to the replacing operation of the brush 10 in the intensive internal combustion engine of rotating shaft 6 footpath direction parts.
Example 4.
Figure 13 is a invention process form 4---the oblique view of the stator 70 of vehicle-mounted dlternator, Figure 14 is the oblique view of conductor contact 71 of stator winding 73 that is applicable to the stator 70 of Figure 13, and Figure 15 and Figure 16 are respectively from the front side and the oblique view of the significant points of the stator 70 of rear side finding Figure 13.
In this example 4, stator 70 is provided with: stator core 72; Be wrapped in the stator winding 73 in the stator core 72; Be installed in the grooving 74, make the insulating component 75 of stator winding 73 and 73 insulation of stator core.Stator core 72 is served as reasons as the stacked cylindric laminated core that forms of the sheet metal of tabular magnetic component, is provided with a plurality ofly at circumferencial direction with predetermined distance, makes axially extended grooving 74 to the inner circumferential side opening.Stator winding 73 is connected with a plurality of short chi shape conductor contacts 71, with the winding pattern formation of regulation.That is to say, nearly insert in the grooving 74 of stator core 72 end of the short chi shape conductor contact 71 of U font, its end intercropping that extends to the front side is interconnected from rear side.
Except that the formation of said stator 70, other formations are identical with the formation of the vehicle-mounted dlternator of example 3.
In this example 4, a plurality of leads---conductor contact 71 fitly is arranged in the stator core 72, and the rear side coil termination 76 of stator winding 73 and front side coil termination 77 leave the space 71 of adjacent conductor contacts.Therefore, when the air in air vent hole 66 enters casing 33 drained into casing 33 outsides by coil termination 76,77, at coil termination 76,77 places that discharge side, draft loss was little, air can successfully flow in casing 33 thus, improves to be positioned at the brush 10 of suction side, the cooling of adjuster 13.
Again, but also a kind of like this vehicle-mounted dlternator of the alternating current generator of above-mentioned example, as shown in figure 17, be provided with outside the grooving 74 of the end face side of stator core 72, to connect lead comes and goes folding, grooving number in accordance with regulations is in grooving 74, at the stator winding of cutting groove depth direction internal layer with outer ply winding.At this moment, at winding 176,177 places of stator winding 173, connect the end face of lead from stator core 72, extend along axis direction, along the circumferential direction shape is identical.
In this alternating current generator, the alternating current generator of connecting portion of end that is provided with bonding conductor contact 71 with the front side is different, there is not connecting portion in front side coil termination 177 sides yet, little in coil termination 177 place's draft losss, can further improve the brush 10 that is positioned at the suction side, the cooling of adjuster 13.
In above-mentioned each example, be that the vehicle-mounted dlternator that 2 brushes 10 are housed in the brush holder is illustrated, but the present invention for example also is applicable to, be provided with the vehicle-mounted dlternator of 4 brushes.
As connecting elements, more than be to use screw, be connected and fixed member but also can use by what bolts and nuts constituted.
As mentioned above, technical scheme 1 described alternating current generator of the present invention is provided with: casing; The rotor that comprises rotor winding and a plurality of claw-like magnetic poles, described rotor is located in the casing, described rotor winding flows through electric current and produces magnetic flux, and described a plurality of claw-like magnetic poles extend and covering rotor winding along axis direction, and described claw-like magnetic pole is formed the N utmost point and the S utmost point by above-mentioned magnetic flux by excitation; Contain the stator core of a plurality of groovings and be installed on the stator of the stator winding in this stator core, described a plurality of stator cores are extended and are formed along axis direction at certain intervals at circumferencial direction; To feed to the brush of rotor winding from the electric current of power supply; And the brush holder that is fixed on the casing, in maintaining part, brush is kept, simultaneously, being provided with can be with brush openable lid when maintaining part is taken out, and is provided with dismounting brush peristome at the position with the casing of above-mentioned lid subtend.Thus, when changing brush, can change the brush of brush holder very simply by peristome.
This peristome also has the radially effect of convection discharge mouth of air that rotor rotation produces, and therefore, air flow resistance diminishes, and has improved the adjuster that is fixed on the brush holder and the cooling of brush.
According to technical solution of the present invention 2 described alternating current generators and since brush holder extend to peristome near, so, can prolong the brush longitudinal size, can change long-term use.And, because the space between casing and brush holder is little, so make a circulation of air that enters in the casing flow to adjuster and the brush side that is fixed on the brush holder more, thus the cooling that has improved adjuster and brush 10.
According to technical solution of the present invention 3 described alternating current generators, the terminal that brush holder constitutes brush holder utilizes that resin mold is integrally formed to form, can connect this terminal and be connected in the institute's brush that connects terminal on the electric wire on the brush by connecting elements, so, can utilize connecting elements to connect the terminal and the brush terminal of brush holder at an easy rate.
According to technical solution of the present invention 4 described alternating current generators, be located at peristome owing to connect the terminal and the brush of brush holder with the connecting portion of terminal, so peristome can be used as the connection working space, be easy to carry out the terminal and the be connected operation of brush of brush holder with terminal.
According to technical solution of the present invention 5 described alternating current generators, described connector is a screw, so can be firmly, low-cost terminal and the brush terminal that connects brush holder.
According to technical solution of the present invention 6 described alternating current generators, at connecting portion, screw moves in the rotor circumference direction, so can use the extracting tool of connecting elements from circumferencial direction, is fit to the replacing operation of the intensive internal combustion engine center brush of axis direction parts.
According to technical solution of the present invention 7 described alternating current generators, at connecting portion, screw moves at the axis direction of rotor, so can use the extracting tool of connecting elements from axis direction, is adapted at the replacing operation of the brush in the intensive internal combustion engine of the radial direction parts of rotor.
According to technical solution of the present invention 8 described alternating current generators, on brush holder, the axis direction of rotor overlapping be provided with the flow controller of adjusting the alternating voltage size that stator produces and with the coldplate of this flow controller butt, so the structure compact, and adjuster cooling property is good.And, after being fixed on adjuster on the brush holder, brush holder is fixed on the casing, so, when being installed in brush holder on the casing, can not have influence on adjuster.
According to technical solution of the present invention 9 described alternating current generators, coil termination at stator winding, lead extends along axis direction from the end face of stator core, along the circumferential direction become same shape, so the air that enters in the case drains into casing when outside by coil termination, the coil termination place aeration resistance of discharging side is little, and air can flow in casing smoothly, has improved the brush that is positioned at the suction side, the cooling of adjuster.

Claims (9)

1. alternating current generator, described alternating current generator is provided with:
One casing;
One comprises the rotor of rotor winding and a plurality of claw-like magnetic poles, described rotor is located in the casing, described rotor winding flows through electric current and produces magnetic flux, and described a plurality of claw-like magnetic poles extend and covering rotor winding along axis direction, and described claw-like magnetic pole is formed the N utmost point and the S utmost point by above-mentioned magnetic flux by excitation;
Contain the stator core of a plurality of groovings and be installed on the stator of the stator winding in this stator core, described a plurality of stator cores are extended and are formed along axis direction at certain intervals at circumferencial direction;
To feed to the brush of rotor winding from the electric current of power supply; And
Brush holder, described brush holder is fixed on the casing, in maintaining part brush is kept, and simultaneously, being provided with can be with brush openable lid when maintaining part is taken out,
One peristome, described peristome be used for the dismounting brush be formed on relative with above-mentioned lid to the position of casing.
2. alternating current generator as claimed in claim 1 is characterized in that brush holder extends near the peristome.
3. alternating current generator as claimed in claim 1 or 2, it is characterized in that, brush holder constitutes, the terminal of brush holder is integrally formed by resin mold moulding and brush holder, this terminal and be connected the brush of being installed on the electric wire on the brush and be electrically connected by connector with terminal.
4. alternating current generator as claimed in claim 3 is characterized in that, the terminal and the brush that connect brush holder are located at peristome with the connecting portion of terminal.
5. alternating current generator as claimed in claim 3 is characterized in that, described connector is a screw.
6. alternating current generator as claimed in claim 5 is characterized in that, at connecting portion, screw is at the circumferencial direction forward-reverse of rotor.
7. alternating current generator as claimed in claim 5 is characterized in that, at connecting portion, screw is at the axis direction forward-reverse of rotor.
8. alternating current generator as claimed in claim 1 or 2 is characterized in that, on brush holder, adjusts stator and produces the adjuster of alternating voltage size and be connected to coldplate on this adjuster overlapping being provided with of the axis direction of rotor.
9. alternating current generator as claimed in claim 1 or 2 is characterized in that, at the coil termination of stator winding, lead extends to axis direction from the end face of stator core, along the circumferential direction forms same shape.
CNB021278350A 2002-08-02 2002-08-02 A.C. generator Expired - Lifetime CN1303744C (en)

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CN1303744C true CN1303744C (en) 2007-03-07

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Publication number Priority date Publication date Assignee Title
CN101039449B (en) * 2006-03-13 2013-01-09 泛达公司 Network cabinet
CN101951058B (en) * 2010-08-31 2012-11-07 浙江德宏汽车电子电器股份有限公司 Regulator brush holder of automobile alternating-current generator

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JPH04289752A (en) * 1991-03-19 1992-10-14 Hitachi Ltd Ac generator for vehicle
US5245241A (en) * 1990-09-27 1993-09-14 Mitsubishi Denki K.K. Brush holder in ac generator for vehicles
CN1054481C (en) * 1995-09-06 2000-07-12 日本电装株式会社 Generator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5245241A (en) * 1990-09-27 1993-09-14 Mitsubishi Denki K.K. Brush holder in ac generator for vehicles
JPH04289752A (en) * 1991-03-19 1992-10-14 Hitachi Ltd Ac generator for vehicle
CN1054481C (en) * 1995-09-06 2000-07-12 日本电装株式会社 Generator

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