CA1146208A - Alternator with built-in voltage regulator - Google Patents
Alternator with built-in voltage regulatorInfo
- Publication number
- CA1146208A CA1146208A CA000365703A CA365703A CA1146208A CA 1146208 A CA1146208 A CA 1146208A CA 000365703 A CA000365703 A CA 000365703A CA 365703 A CA365703 A CA 365703A CA 1146208 A CA1146208 A CA 1146208A
- Authority
- CA
- Canada
- Prior art keywords
- voltage regulator
- alternator
- assembly
- connector
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K19/00—Synchronous motors or generators
- H02K19/16—Synchronous generators
- H02K19/36—Structural association of synchronous generators with auxiliary electric devices influencing the characteristic of the generator or controlling the generator, e.g. with impedances or switches
- H02K19/365—Structural association of synchronous generators with auxiliary electric devices influencing the characteristic of the generator or controlling the generator, e.g. with impedances or switches with a voltage regulator
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K19/00—Synchronous motors or generators
- H02K19/16—Synchronous generators
- H02K19/36—Structural association of synchronous generators with auxiliary electric devices influencing the characteristic of the generator or controlling the generator, e.g. with impedances or switches
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Synchronous Machinery (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
An alternator with built-in voltage regulator, includes a voltage reguator assembly disposed between one of alternator end frames and alternator rectifier cooling fins. The assembly includes an insulating assembly base and a voltage regulator circuit which are made integral with each other, and the assembly base has embedded therein a plurality of band-shaped conductors including as integral parts thereof voltage regulator circuit termianls, external connection terminals and wiring means for interconnecting the terminals.
An alternator with built-in voltage regulator, includes a voltage reguator assembly disposed between one of alternator end frames and alternator rectifier cooling fins. The assembly includes an insulating assembly base and a voltage regulator circuit which are made integral with each other, and the assembly base has embedded therein a plurality of band-shaped conductors including as integral parts thereof voltage regulator circuit termianls, external connection terminals and wiring means for interconnecting the terminals.
Description
1 The present invention relates to alternatcrs of the type mainly used as automotive vehicle alter-nators, and more particularly the invention relates to an alternator of the type having a semiconductor voltage regulator built into its end frame.
Conventional vehicle alternators have employed voltage regulators such that the current supplied to the field coil is controlled in accordance with the output voltage of the stator coils so as to maintain the output voltage of the generator constant~ Heretofore, voltage regulators of the semiconductor type composed of electronic circuitry using semiconductor devices have been used and it has been usual to mount the voltage regulator on the generator. In this case, the usual practice has been such that the voltage regulator is attached with small screws to the mount secured to the outer wall of the generator end frame.
However, efforts have recently been made toward decreasing the size and weight of alternators designed for use on vehicles, particularly automotive vehicles and thus the space available for mounting the generator has in fact been decreased correspondingly.
As a result, in the case of the alternators having the voltage regulators mounted on the outer side of the generator frames in the conventional manner, there 1 have been cases where the outer diameters of the alternators have been so large as to make their mounting on some types of vehicles impossible.
While attempts have heretofore been made to build the voltage regulators into the alternators, the rectifier units have been mounted in the intended locations of the built-ln voltage regulators with the result that the incorporation of the ordinary prior art voltage regulators has necessitated modification of the rectifier units into special forms with the resulting complication of construction and hence the increase in the size of the rectifier units.
With a view to overcoming the foregoing deficiencies in the prior art, it is the object of the present invention to provide a compact alternator with built~in rectifier unit and voltage regulator.
In accordance with the present invention there is thus provided an improved alternator apparatus of a type housing therein a voltage regulator assembly, comprising: an alternator having frame means including a substantially cup-shaped end frame; cooling fin means attached inside of and parallel to bottom surface of said end frame, and rectifier means including diodes provided over said cooling fin means to rectify AC
voltage from said alternator into substantially DC
voltage; a voltage regulator assembly including a semiconductor voltage regulator circuit for regulating the output voltage of said alternator, said circuit being 1 disposed in a case, a connector having a plurality of external terminals, and an assembly base means made from an insulating material and having embedded thereln a plurality of wiring means for connecting said voltage regulator circuit to said external terminals, said assembly being disposed between said cooling fin means and bottom surface of said end frame.
The invention will now be described by way of example with reference to the accompanying drawings, in which:
Fig. 1 is a circuit diagram showing the circuit construction of an alternator according to an embodiment of the present invention;
Fig. 2 is a partially sectional front view of the alternator of Fig. 1 as viewed from its rear side;
Fig. 3 is a front view of the voltage regulator assembly shown in Fig. l; and Figs. 4 and 5 are respectively a side view and a sectional view taken along the line V-V of Fig. 3.
Referring to Fig. 1, there is illustrated by way of example a circuit diagram showing the connections between an alternator of this invention and external units. In the Figure, an alternator G comprises three-phase stator coils 1, a field coil 2 wound on a rotor, brushes 3a and 3b for supplying current to the field coil 2, a rectifier unit 4 including three pairs of (or six) diodes for full-wave rectifying the ;208 1 AC output of the stator coils 1, a pair of (or two) neutral diodes 5, three regulator excitation diodes 6, an initial e~citation resistor 7 and a diode 8 connected in series with the former, a battery terminal 9, a voltage regulator circuit 10 and a connector 11 having external terminals lla to llc. The battery terminal 9 is connected to a battery B, and the connector 11 has its first external terminal or voltage detecting terminal lla connected to the battery B, the second external terminal or lamp terminal llb to a relay R for a charge indicator lamp L and the third external terminal llc to a key switch S.
In accordance with the present invention the voltage regulator circuit 10 and the connector 11 are made integral with each other to form a voltage regulator assembly 12. The voltage regulator circuit lO is responsive to the voltage of the battéry B to control the flow of current to the field coil 2 and thereby to regulate the output voltage of the generator and it is in the form of a semiconductor circuit employing semi-conductor devices. The circuit 10 includes four termi-nals lOa to lOd. Of the four terminals of the voltage regulator circuit 10, the first terminal lOa is connected to the terminal lla of the connector 11 through a wiring member lOa', the second terminal lOb to the second terminal llb of the connector 11 and a brush terminal 12b of the assembly 12 through wiring members lOb' and lOb", respectively, the third terminal lOc O~
1 to the other brush terminal 12c of the assembly 12 through a wiring member lOc' and the fourth terminal lOd to a ground terminal 12d of the assembly 12 through a wiring member lOd'. The brush terminals 12b and 12c of the assembly 12 are respectively connected to the brushes 3a and 3b, and the ground terminal 12d is grounded.
Fig. 2 shows the construction of the principal parts of the alternator according to the invention.
In the Figure, a rear end frame 20 is formed into sub-stantially cup shape and it is coupled with a front end frame (not shown) so as to hold therebetween the stator (not shown) having the stator coils 1 (Fig. 1) and form a generator housing. Disposed in the conven-tional manner inside the rear end frame 20 are coolingfins 41 arranged substantially parallel to a side portion 21 (corresponding to the bottom of the cup), and the diodes of the rectifier unit 4 of Fig. 1 are mounted on the cooling fins 41. Although not shown in detail, the cooling fins 41 comprise a pair of p'ositive and negative fins each in the form of a circular thin plate and the fins 41 are circumferentially continuously arranged to take the shape of horseshoe as a whole.
The three positive diodes of the rectifier unit 4 of Fig. 1 are mounted in the conventional manner on the positive fin and the other three negative diodes are similarly mounted on the other negative fin. These diodes are connected as shown in Fig. 1. If necessary, o~
1 the neutral diodes 5 and the excitatlon diodes 6 of Fig.
1 may also be mounted on the cooling fins 41.
The voltage regulator assembly 12 including the voltage regulator circuit 10 and the connector 11 made integral with each other as described in connection with Fig. 1 is formed into substantially circular arc shape and it is disposed between the side portion 21 of the rear end frame 20 and the cooling fins 41 so as to extend substantially parallel to the latter.
The voltage regulator assembly 12 is built into the generator by attaching it to the end frame 20 by three bolts 42 fitted to the cooling fins 41. In this case, the connector section that will be described later is located between the ends of the cooling fins 41 so as to bridge these ends, and a brush holder 3 for holding the brushes 3a and 3b of Fig. 1 is mounted on the back side of the connector section (the inner side of the generator).
Figs~ 3 to 5 show a detailed construction of the voltage regulator assembly 12, and the assembly 12 includes an assembly base 13 made from an insulating material such as PPS material (polyphenylene sulphide) for assemblying the voltage regulator and the connector as an integral unit. The base 13 includes a case 101 of the voltage regulator circuit 10 and the connector 11 and these components are molded in one piece. In this case, five metal condùctors 14a to 14e of band plate shape are embedded simultaneously in the base 13.
v~
1 The voltage regulator circuit case 101 is formed into square box shape and the connector 11 is formed into a shape having three connecting boxes llla to lllc.
The first metal conductor 14a embedded in the base 13 comprises, as its integral parts, the first terminal lOa of the voltage regulator circuit 10, the wiring member lOa' and the first external terminal lla of the connector 11 which are shown in Fig. 1, and the metal conductor 14a has its one end projected through an inner wall 102 of the case 101 to form the first terminal lOa, its other end exposed inside the first connecting box llla of the connector 11 to form the first external terminal lla and its intermediate portion formed into the connecting conductor lOa'.
The second metal conductor 14b comprises, as its integral parts, the second terminal lOb, the wiring members lOb' and lOb", the second external terminal llb and the brush terminal 12b of the assembly 12 which are shown in Fig. 1, and the conductor 14b has its one end or the second terminal lOb projected through the inner wall 102 of the case 101, its other end or the second external terminal llb exposed inside the second connecting box lllb of the connector 11 and its other end or the brush terminal 12b projected from the base 13 near the side of the connector 11. The third metal conductor 14c comprises, as its integral parts, the third terminal lOc, the wiring member lOc' and the other brush terminal 12c which are shown in Fig. 1, and the conductor 14c has its ;;208 1 one end or the third terminal 1.0c proJected through the case inner wall 102 and the other end or the brush terminal 12c projected through the outer wall of the base 13 to extend parallel to the brush terminal 12b The fourth metal conductor 14d comprises, as its integral parts, the fourth terminal lOd, the wiring member lOd' and the ground terminal 12d which are shown in Fig. 1 and it also serves as a stay for attaching the assembly 12 to the end frame 20. The fourth terminal lOd portion is projected through the case inner wall 102 and the ground terminal 12d portion which is attached to the end frame 20 by the bolt 42 is grounded. The fifth metal conductor 14e has its one end exposed inside the third connecting box lllc of the connector 11 and the other end projected to the back side of the base 13. The diode 8 of Fig. 1 is connected to the other end of the fifth metal conductor 14e.
The case 101 forming an integral part of the base 13 includes an open side facing the side 21 of the end frame 20 and a radiation fin 103 is fixed by rivets 104 to the open side to cover it. Disposed inside the case 101 in contact with the inner surface of the radiation fin 103 is a wiring board 105 comprising a ceramic substrate or the like. A semiconductor unit 106 is mounted on the wiring board 105 to form the voltage regulator circuit of Fig. 1 and the circuit is connected to the terminals lOa to lOd projected through the case inner wall 102. A cover 107 is fixed to the other open ~6ZO~
1 side of the case 101 which is opposite to the radiation fin 103 and thus the terminals lOa to lOd, the wiring board 105 and the unit 106 are enclosed by the case 101, the radiation fin 103 ancl the cover 107. The unit 106 is coated with resin 108 with which the case 101 is filled, thus protecting the unit 106 from moisture and the like.
In accordance with the above-described construction, mainly by virtue of the fact that the voltage regulator assembly 12 is constructed as described above, there is the advantage of practically causing no increase in the size of the generator than previously and making it possible to build the voltage regulator circuit 10 into the body of generator. In other words, since the base 13 is in thin plate form, by locating the base 13 parallel to and along the cooling fins 41 (hence the side 21 of the end frame 20), it is possible to locate the assembly 12 in the narrow space between the cooling fins 41 and the end frame side 21. Since the assembly 12 is mounted such that the connector 11 forming a relatively large projected part of the assemb~ly 12 is located in the space between the ends of the horseshoe-shaped cooling fins 41 and also the connector 11 projects from the end frame 20, there is the effect of eliminating the need for any additional space to receive the voltage regulator.
As a result, by simply projecting the end frame 20 axially to some extent as the occasion demands, it is 620~3 1 possible to build the voltage regulator into the generator.
In addition, since the assembly 12 is comprised of at least the voltage regulator circuitlO, the connector 11 and the assembly base 13, the components which are to be interconnected at a large number of their portions, that is, the voltage regulator circuit 10 and the con-nector 11 can be connected to each other prior to the mountlng of the assembly 12 to the genèrator, thus simplifying the connecting operation, making it possible to automate the performance test of the assembly as a separate unit and increasing the reliability of the con-nections. Further, since the wiring members lOa' to lOd' for connecting the voltage regulator circuit 10 to the external terminals lla to llc of the connector 11 can be embedded in the base 13 and also the case 101 and the connector 11 can be formed as integral parts of the base 13, the assembly can be manufactured inexpensively and the assembly can also be made small and compact. Still further, since the terminals lOa to lOd of the voltage regulator circuit 10 are located inside the case 101, these terminals can be possitively protected against e~ternal water splash and the like.
It is to be noted that by disposing the heat radiation plate 103 on the end frame side, the radiation plate 103 can be cooled effectively by means of the cooling air drawn into the generator.
It will thus be seen from the foregoing o~
1 description that the present invention has a great advantage o~ providing an alternator with built-in voltage regulator ~hich is small in size, simple in construction and excellent in reliability.
Conventional vehicle alternators have employed voltage regulators such that the current supplied to the field coil is controlled in accordance with the output voltage of the stator coils so as to maintain the output voltage of the generator constant~ Heretofore, voltage regulators of the semiconductor type composed of electronic circuitry using semiconductor devices have been used and it has been usual to mount the voltage regulator on the generator. In this case, the usual practice has been such that the voltage regulator is attached with small screws to the mount secured to the outer wall of the generator end frame.
However, efforts have recently been made toward decreasing the size and weight of alternators designed for use on vehicles, particularly automotive vehicles and thus the space available for mounting the generator has in fact been decreased correspondingly.
As a result, in the case of the alternators having the voltage regulators mounted on the outer side of the generator frames in the conventional manner, there 1 have been cases where the outer diameters of the alternators have been so large as to make their mounting on some types of vehicles impossible.
While attempts have heretofore been made to build the voltage regulators into the alternators, the rectifier units have been mounted in the intended locations of the built-ln voltage regulators with the result that the incorporation of the ordinary prior art voltage regulators has necessitated modification of the rectifier units into special forms with the resulting complication of construction and hence the increase in the size of the rectifier units.
With a view to overcoming the foregoing deficiencies in the prior art, it is the object of the present invention to provide a compact alternator with built~in rectifier unit and voltage regulator.
In accordance with the present invention there is thus provided an improved alternator apparatus of a type housing therein a voltage regulator assembly, comprising: an alternator having frame means including a substantially cup-shaped end frame; cooling fin means attached inside of and parallel to bottom surface of said end frame, and rectifier means including diodes provided over said cooling fin means to rectify AC
voltage from said alternator into substantially DC
voltage; a voltage regulator assembly including a semiconductor voltage regulator circuit for regulating the output voltage of said alternator, said circuit being 1 disposed in a case, a connector having a plurality of external terminals, and an assembly base means made from an insulating material and having embedded thereln a plurality of wiring means for connecting said voltage regulator circuit to said external terminals, said assembly being disposed between said cooling fin means and bottom surface of said end frame.
The invention will now be described by way of example with reference to the accompanying drawings, in which:
Fig. 1 is a circuit diagram showing the circuit construction of an alternator according to an embodiment of the present invention;
Fig. 2 is a partially sectional front view of the alternator of Fig. 1 as viewed from its rear side;
Fig. 3 is a front view of the voltage regulator assembly shown in Fig. l; and Figs. 4 and 5 are respectively a side view and a sectional view taken along the line V-V of Fig. 3.
Referring to Fig. 1, there is illustrated by way of example a circuit diagram showing the connections between an alternator of this invention and external units. In the Figure, an alternator G comprises three-phase stator coils 1, a field coil 2 wound on a rotor, brushes 3a and 3b for supplying current to the field coil 2, a rectifier unit 4 including three pairs of (or six) diodes for full-wave rectifying the ;208 1 AC output of the stator coils 1, a pair of (or two) neutral diodes 5, three regulator excitation diodes 6, an initial e~citation resistor 7 and a diode 8 connected in series with the former, a battery terminal 9, a voltage regulator circuit 10 and a connector 11 having external terminals lla to llc. The battery terminal 9 is connected to a battery B, and the connector 11 has its first external terminal or voltage detecting terminal lla connected to the battery B, the second external terminal or lamp terminal llb to a relay R for a charge indicator lamp L and the third external terminal llc to a key switch S.
In accordance with the present invention the voltage regulator circuit 10 and the connector 11 are made integral with each other to form a voltage regulator assembly 12. The voltage regulator circuit lO is responsive to the voltage of the battéry B to control the flow of current to the field coil 2 and thereby to regulate the output voltage of the generator and it is in the form of a semiconductor circuit employing semi-conductor devices. The circuit 10 includes four termi-nals lOa to lOd. Of the four terminals of the voltage regulator circuit 10, the first terminal lOa is connected to the terminal lla of the connector 11 through a wiring member lOa', the second terminal lOb to the second terminal llb of the connector 11 and a brush terminal 12b of the assembly 12 through wiring members lOb' and lOb", respectively, the third terminal lOc O~
1 to the other brush terminal 12c of the assembly 12 through a wiring member lOc' and the fourth terminal lOd to a ground terminal 12d of the assembly 12 through a wiring member lOd'. The brush terminals 12b and 12c of the assembly 12 are respectively connected to the brushes 3a and 3b, and the ground terminal 12d is grounded.
Fig. 2 shows the construction of the principal parts of the alternator according to the invention.
In the Figure, a rear end frame 20 is formed into sub-stantially cup shape and it is coupled with a front end frame (not shown) so as to hold therebetween the stator (not shown) having the stator coils 1 (Fig. 1) and form a generator housing. Disposed in the conven-tional manner inside the rear end frame 20 are coolingfins 41 arranged substantially parallel to a side portion 21 (corresponding to the bottom of the cup), and the diodes of the rectifier unit 4 of Fig. 1 are mounted on the cooling fins 41. Although not shown in detail, the cooling fins 41 comprise a pair of p'ositive and negative fins each in the form of a circular thin plate and the fins 41 are circumferentially continuously arranged to take the shape of horseshoe as a whole.
The three positive diodes of the rectifier unit 4 of Fig. 1 are mounted in the conventional manner on the positive fin and the other three negative diodes are similarly mounted on the other negative fin. These diodes are connected as shown in Fig. 1. If necessary, o~
1 the neutral diodes 5 and the excitatlon diodes 6 of Fig.
1 may also be mounted on the cooling fins 41.
The voltage regulator assembly 12 including the voltage regulator circuit 10 and the connector 11 made integral with each other as described in connection with Fig. 1 is formed into substantially circular arc shape and it is disposed between the side portion 21 of the rear end frame 20 and the cooling fins 41 so as to extend substantially parallel to the latter.
The voltage regulator assembly 12 is built into the generator by attaching it to the end frame 20 by three bolts 42 fitted to the cooling fins 41. In this case, the connector section that will be described later is located between the ends of the cooling fins 41 so as to bridge these ends, and a brush holder 3 for holding the brushes 3a and 3b of Fig. 1 is mounted on the back side of the connector section (the inner side of the generator).
Figs~ 3 to 5 show a detailed construction of the voltage regulator assembly 12, and the assembly 12 includes an assembly base 13 made from an insulating material such as PPS material (polyphenylene sulphide) for assemblying the voltage regulator and the connector as an integral unit. The base 13 includes a case 101 of the voltage regulator circuit 10 and the connector 11 and these components are molded in one piece. In this case, five metal condùctors 14a to 14e of band plate shape are embedded simultaneously in the base 13.
v~
1 The voltage regulator circuit case 101 is formed into square box shape and the connector 11 is formed into a shape having three connecting boxes llla to lllc.
The first metal conductor 14a embedded in the base 13 comprises, as its integral parts, the first terminal lOa of the voltage regulator circuit 10, the wiring member lOa' and the first external terminal lla of the connector 11 which are shown in Fig. 1, and the metal conductor 14a has its one end projected through an inner wall 102 of the case 101 to form the first terminal lOa, its other end exposed inside the first connecting box llla of the connector 11 to form the first external terminal lla and its intermediate portion formed into the connecting conductor lOa'.
The second metal conductor 14b comprises, as its integral parts, the second terminal lOb, the wiring members lOb' and lOb", the second external terminal llb and the brush terminal 12b of the assembly 12 which are shown in Fig. 1, and the conductor 14b has its one end or the second terminal lOb projected through the inner wall 102 of the case 101, its other end or the second external terminal llb exposed inside the second connecting box lllb of the connector 11 and its other end or the brush terminal 12b projected from the base 13 near the side of the connector 11. The third metal conductor 14c comprises, as its integral parts, the third terminal lOc, the wiring member lOc' and the other brush terminal 12c which are shown in Fig. 1, and the conductor 14c has its ;;208 1 one end or the third terminal 1.0c proJected through the case inner wall 102 and the other end or the brush terminal 12c projected through the outer wall of the base 13 to extend parallel to the brush terminal 12b The fourth metal conductor 14d comprises, as its integral parts, the fourth terminal lOd, the wiring member lOd' and the ground terminal 12d which are shown in Fig. 1 and it also serves as a stay for attaching the assembly 12 to the end frame 20. The fourth terminal lOd portion is projected through the case inner wall 102 and the ground terminal 12d portion which is attached to the end frame 20 by the bolt 42 is grounded. The fifth metal conductor 14e has its one end exposed inside the third connecting box lllc of the connector 11 and the other end projected to the back side of the base 13. The diode 8 of Fig. 1 is connected to the other end of the fifth metal conductor 14e.
The case 101 forming an integral part of the base 13 includes an open side facing the side 21 of the end frame 20 and a radiation fin 103 is fixed by rivets 104 to the open side to cover it. Disposed inside the case 101 in contact with the inner surface of the radiation fin 103 is a wiring board 105 comprising a ceramic substrate or the like. A semiconductor unit 106 is mounted on the wiring board 105 to form the voltage regulator circuit of Fig. 1 and the circuit is connected to the terminals lOa to lOd projected through the case inner wall 102. A cover 107 is fixed to the other open ~6ZO~
1 side of the case 101 which is opposite to the radiation fin 103 and thus the terminals lOa to lOd, the wiring board 105 and the unit 106 are enclosed by the case 101, the radiation fin 103 ancl the cover 107. The unit 106 is coated with resin 108 with which the case 101 is filled, thus protecting the unit 106 from moisture and the like.
In accordance with the above-described construction, mainly by virtue of the fact that the voltage regulator assembly 12 is constructed as described above, there is the advantage of practically causing no increase in the size of the generator than previously and making it possible to build the voltage regulator circuit 10 into the body of generator. In other words, since the base 13 is in thin plate form, by locating the base 13 parallel to and along the cooling fins 41 (hence the side 21 of the end frame 20), it is possible to locate the assembly 12 in the narrow space between the cooling fins 41 and the end frame side 21. Since the assembly 12 is mounted such that the connector 11 forming a relatively large projected part of the assemb~ly 12 is located in the space between the ends of the horseshoe-shaped cooling fins 41 and also the connector 11 projects from the end frame 20, there is the effect of eliminating the need for any additional space to receive the voltage regulator.
As a result, by simply projecting the end frame 20 axially to some extent as the occasion demands, it is 620~3 1 possible to build the voltage regulator into the generator.
In addition, since the assembly 12 is comprised of at least the voltage regulator circuitlO, the connector 11 and the assembly base 13, the components which are to be interconnected at a large number of their portions, that is, the voltage regulator circuit 10 and the con-nector 11 can be connected to each other prior to the mountlng of the assembly 12 to the genèrator, thus simplifying the connecting operation, making it possible to automate the performance test of the assembly as a separate unit and increasing the reliability of the con-nections. Further, since the wiring members lOa' to lOd' for connecting the voltage regulator circuit 10 to the external terminals lla to llc of the connector 11 can be embedded in the base 13 and also the case 101 and the connector 11 can be formed as integral parts of the base 13, the assembly can be manufactured inexpensively and the assembly can also be made small and compact. Still further, since the terminals lOa to lOd of the voltage regulator circuit 10 are located inside the case 101, these terminals can be possitively protected against e~ternal water splash and the like.
It is to be noted that by disposing the heat radiation plate 103 on the end frame side, the radiation plate 103 can be cooled effectively by means of the cooling air drawn into the generator.
It will thus be seen from the foregoing o~
1 description that the present invention has a great advantage o~ providing an alternator with built-in voltage regulator ~hich is small in size, simple in construction and excellent in reliability.
Claims (9)
1. An alternator apparatus of a type housing therein a voltage regulator assembly, comprising:
an alternator having frame means including a substantially cup-shaped end frame;
cooling fin means attached inside of and parallel to bottom surface of said end frame, and rectifier means including diodes provided over said cooling fin means to rectify AC voltage from said alternator into substantially DC voltage;
a voltage regulator assembly including a semi-conductor voltage regulator circuit for regulating the output voltage of said alternator, said circuit being disposed in a case, a connector having a plurality of external terminals, and an assembly base means made from an insulating material and having embedded therein a plurality of wiring means for connecting said voltage regulator circuit to said external terminals, said assembly being disposed between said cooling fin means and bottom surface of said end frame.
an alternator having frame means including a substantially cup-shaped end frame;
cooling fin means attached inside of and parallel to bottom surface of said end frame, and rectifier means including diodes provided over said cooling fin means to rectify AC voltage from said alternator into substantially DC voltage;
a voltage regulator assembly including a semi-conductor voltage regulator circuit for regulating the output voltage of said alternator, said circuit being disposed in a case, a connector having a plurality of external terminals, and an assembly base means made from an insulating material and having embedded therein a plurality of wiring means for connecting said voltage regulator circuit to said external terminals, said assembly being disposed between said cooling fin means and bottom surface of said end frame.
2. An alternator apparatus according to claim 1, wherein said assembly base means, said case and said connector are made in one piece.
3. An alternator apparatus according to claim 1, further comprising a heat radiation plate secured to one side of said case.
4. An alternator apparatus according to claim 1, wherein said assembly has substantially circular arc shape.
5. An alternator apparatus according to claim 1, wherein said assembly is disposed adjacent to a rear end of said alternator.
6. An alternator apparatus according to claim 1 or 4, wherein said assembly base includes a synthetic-resin insulating base in thin plate form molded with a plurality of metal conductors of band plate shape embedded therein, said metal conductors including as integral parts thereof at least one or the other of terminals of said semiconductor voltage regulator circuit and said connector external terminals and said wiring means.
7. An alternator apparatus according to claim 6, wherein said voltage regulator circuit terminal portions of said band-shaped metal conductors are disposed within said case.
8. An alternator apparatus with a built-in voltage regulator, comprising:
an alternator housing having an end frame;
rectifier means having cooling fin means and mounted inside one of said end frames substantially parallel to one side thereof;
a semiconductor voltage regulator for regulating a generator output voltage, said voltage regulator including a wiring board having mounted thereon semiconductor devices forming a voltage regulator circuit, and a case for accommodating said wiring board; and a connector having external terminals connected to said voltage regulator through wiring means;
wherein a voltage regulator assembly is formed by at least said voltage regulator and said connector, said voltage regulator assembly including an assembly base made from a synthetic resin material and having said voltage regulator case and said connector formed as integral parts thereof and said wiring means molded therewith; and wherein said voltage regulator assembly is disposed between said end frame side and said cooling fin means.
an alternator housing having an end frame;
rectifier means having cooling fin means and mounted inside one of said end frames substantially parallel to one side thereof;
a semiconductor voltage regulator for regulating a generator output voltage, said voltage regulator including a wiring board having mounted thereon semiconductor devices forming a voltage regulator circuit, and a case for accommodating said wiring board; and a connector having external terminals connected to said voltage regulator through wiring means;
wherein a voltage regulator assembly is formed by at least said voltage regulator and said connector, said voltage regulator assembly including an assembly base made from a synthetic resin material and having said voltage regulator case and said connector formed as integral parts thereof and said wiring means molded therewith; and wherein said voltage regulator assembly is disposed between said end frame side and said cooling fin means.
9. An alternator apparatus according to claim 8, wherein said regulator assembly base is made from a poly-phenylene sulphide material.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP157641/79 | 1979-12-04 | ||
| JP15764179A JPS5681069A (en) | 1979-12-04 | 1979-12-04 | Ac generator with built-in type voltage regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1146208A true CA1146208A (en) | 1983-05-10 |
Family
ID=15654156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000365703A Expired CA1146208A (en) | 1979-12-04 | 1980-11-28 | Alternator with built-in voltage regulator |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS5681069A (en) |
| CA (1) | CA1146208A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5675205A (en) * | 1994-06-01 | 1997-10-07 | Robert Bosch Gmbh | Module for controllers and brush holders and method of manfacturing it |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0717263Y2 (en) * | 1986-10-31 | 1995-04-19 | 澤藤電機株式会社 | Vehicle AC generator voltage regulator |
| US5248910A (en) * | 1992-08-13 | 1993-09-28 | Ford Motor Company | Regulator and brush holder assembly |
| US7362001B2 (en) | 2002-10-28 | 2008-04-22 | Toyota Jidosha Kabushiki Kaisha | Generator-motor |
| US7411324B2 (en) | 2002-10-28 | 2008-08-12 | Toyota Jidosha Kabushiki Kaisha | Generator-motor |
| EP1847166A3 (en) * | 2006-04-20 | 2008-11-12 | Antonio Romano Moszoro | Electric installation applied to an agricultural tractor to be used in coupled tools |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5241813A (en) * | 1975-09-29 | 1977-03-31 | Hitachi Ltd | Voltage regulator storing type ac generator |
-
1979
- 1979-12-04 JP JP15764179A patent/JPS5681069A/en active Pending
-
1980
- 1980-11-28 CA CA000365703A patent/CA1146208A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5675205A (en) * | 1994-06-01 | 1997-10-07 | Robert Bosch Gmbh | Module for controllers and brush holders and method of manfacturing it |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5681069A (en) | 1981-07-02 |
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| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |