JPH0424945B2 - - Google Patents
Info
- Publication number
- JPH0424945B2 JPH0424945B2 JP58154891A JP15489183A JPH0424945B2 JP H0424945 B2 JPH0424945 B2 JP H0424945B2 JP 58154891 A JP58154891 A JP 58154891A JP 15489183 A JP15489183 A JP 15489183A JP H0424945 B2 JPH0424945 B2 JP H0424945B2
- Authority
- JP
- Japan
- Prior art keywords
- heat sink
- negative electrode
- electrode heat
- positive electrode
- bracket
- 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 - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/04—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for rectification
- H02K11/049—Rectifiers associated with stationary parts, e.g. stator cores
- H02K11/05—Rectifiers associated with casings, enclosures or brackets
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Synchronous Machinery (AREA)
Description
【発明の詳細な説明】
本発明は自動車用交流発電機の整流装置に係わ
り、時に発電機のブラケツトに軸方向に重ねて配
置固定するに好適な全波整流装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rectifying device for an automotive alternator, and more particularly to a full-wave rectifying device suitable for being arranged and fixed in an axially overlapping manner on a bracket of a generator.
一般に自動車用の交流発電機には米国特許第
4162419号明細書にある如く全波整流装置が内蔵
され、該整流装置で発電された三相交流を直流に
整流しバツテリーを充電する用に構成されてい
る。前記全波整流装置を構成するダイオードは金
属板からなる放熱板に固定されて用いられてい
る。この種の自動車用発電機は普通ブラケツト自
体が負極となつているため、負極放熱板はブラケ
ツトに直接取付けられ、正極はブラケツトより絶
縁されて取付けられ、負極放熱板が冷風導入上流
側に配置される。また負極側ダイオードと負極側
ダイオード及び電機子コイルとの結果の合理化を
計るため、特開昭54−4303号公報にある如く正、
負極放熱板を平行に重ねた二重構造が広く用いら
れている。しかし、一般には従来では正、負極の
放熱板のうち、外径をほぼ等しくしていたため、
例えばブラケツトに近い側の負極放熱板は良好に
冷却されるが、正極放熱板は負極のそれの影にな
つてしまい、冷却風が当たらず、ダイオードの発
熱で温度が高くなり、両放熱板間にアンバランス
を生じている。このためダイオードの熱的制限条
件は全て正極放熱板の温度上昇により決定されて
しまい、高出力の発電機を製作する上での大きな
障害となつていた。 Generally, alternating current generators for automobiles have US patents.
As described in the specification of No. 4162419, a full-wave rectifier is built in, and the three-phase alternating current generated by the rectifier is rectified into direct current to charge the battery. The diodes constituting the full-wave rectifier are fixed to a heat sink made of a metal plate. In this type of automotive generator, the bracket itself is usually the negative electrode, so the negative electrode heat sink is attached directly to the bracket, the positive electrode is installed insulated from the bracket, and the negative electrode heat sink is placed upstream of the cold air introduction side. Ru. In addition, in order to rationalize the results of the negative side diode, the negative side diode, and the armature coil, positive,
A double structure in which negative electrode heat sinks are stacked in parallel is widely used. However, in general, in the past, the outer diameters of the positive and negative heat sinks were approximately equal,
For example, the negative electrode heat sink on the side closer to the bracket is cooled well, but the positive electrode heat sink is in the shadow of the negative electrode heat sink, so the cooling air does not hit it, and the temperature increases due to the heat generated by the diode. This is causing an imbalance. For this reason, the thermal limiting conditions of the diode are all determined by the temperature rise of the positive electrode heat sink, which has been a major obstacle in producing a high-output generator.
本発明の目的は、整流装置を構成する正、負極
放熱板を適正な形状関係に保つことにより整流装
置の冷却を効果的に可能ならしめるものである。 An object of the present invention is to make it possible to effectively cool a rectifier by maintaining an appropriate shape relationship between the positive and negative heat sinks that constitute the rectifier.
本発明は、上記目的を達成するため、負極放熱
板がブラケツト等への熱伝導により冷却可能であ
ることに着目し、この冷却効果によつて負極放熱
板の面積を減少させ、正極放熱板の一部を直接冷
却風に当てるようにしたものである。 In order to achieve the above object, the present invention focuses on the fact that the negative electrode heat sink can be cooled by heat conduction to a bracket, etc., and uses this cooling effect to reduce the area of the negative electrode heat sink, thereby reducing the area of the positive electrode heat sink. A portion is exposed directly to cooling air.
第１図の実施例において、電機子鉄心１には電
機子コイルが巻かれ、その両側はフロントブラケ
ツト３及びリヤーブラケツト４により保持されて
いる。回転子２は前記電機子鉄心１の内径側に空
〓をもつて配置され、その回転軸２ａは前記両ブ
ラケツト３，４に保持されたベアリング５，６に
圧入され回転するよう構成されている。前記回転
子２の回転力は自動車のエンジンからのベルト駆
動によりプーリ７から回転子２へと伝達される。
また前記回転軸２ａは反プーリ側にスリツプリン
グ９を有し、ブラシホルダー１０をブラシを介し
て前記回転子２の界磁コイルに界磁電流が供給さ
れるように構成されている。発電出力を全波整流
するための整流装置のダイオード１６（第２図参
照）は負極放熱板１１に、ダイオード１５（第２
図参照）は正極放熱板１２に圧入され、リヤーブ
ラケツト４の内部に装着されている。前記両極の
放熱板は絶縁物２４を介して軸方向に重ねられ、
ネジ１３にて放熱体となるリヤーブラケツト４へ
固定されている。またブラケツトの外側には異物
混入防止用の保護カバー１４が設けられ、このカ
バーに設けた多数の穴よりダイオード１５，１
６、電機子鉄心１、回転子２に冷却風を吸入する
が、この負圧源としては、回転軸２ａと同速度で
回転するフアン８があり、図示のＰ矢印の方向に
冷却風が導入される。 In the embodiment shown in FIG. 1, an armature coil is wound around an armature core 1, and both sides of the armature coil are held by a front bracket 3 and a rear bracket 4. The rotor 2 is arranged with a space on the inner diameter side of the armature core 1, and its rotating shaft 2a is press-fitted into bearings 5 and 6 held by the brackets 3 and 4 so as to rotate. . The rotational force of the rotor 2 is transmitted from the pulley 7 to the rotor 2 by a belt drive from an automobile engine.
Further, the rotating shaft 2a has a slip ring 9 on the side opposite to the pulley, and is configured so that a field current is supplied to the field coil of the rotor 2 through a brush holder 10. A diode 16 (see FIG. 2) of a rectifier for full-wave rectification of the power generation output is connected to the negative electrode heat sink 11, and a diode 15 (second
(see figure) is press-fitted into the positive electrode heat sink 12 and mounted inside the rear bracket 4. The heat sinks of both poles are stacked in the axial direction with an insulator 24 in between,
It is fixed with screws 13 to a rear bracket 4 which serves as a heat radiator. A protective cover 14 is provided on the outside of the bracket to prevent foreign matter from entering, and the diodes 15 and 1 can be connected through a number of holes provided in this cover.
6. Cooling air is sucked into the armature core 1 and rotor 2, and the negative pressure source is a fan 8 that rotates at the same speed as the rotating shaft 2a, and the cooling air is introduced in the direction of the arrow P shown in the figure. be done.
第２図はリヤーブラケツト４の内部をプーリ側
から見た図であるが、図示のように放熱板はほぼ
Ｕ字状をなし、正極放熱板１２、負極放熱板１１
（第４図参照）上にはそれぞれ正極ダイオード１
５、負極ダイオード１６が圧入固定され、そのリ
ード端子はモールド端子１７に埋め込まれたター
ミナル１８により相互に結線されている。この場
合は第３図に示すようにダイオード１５，１６は
各相につき並列に２個配置されている。またこの
発電機の電圧調整を行なう半導体式のレギユレー
タ２０が組み込まれ、各相に接続された３個の補
助ダイオード１９からの界磁電流を制御してい
る。さらに正極放電板１２にはＢ端子より直流出
力を得る接続板２１が取付けられている。 FIG. 2 is a view of the inside of the rear bracket 4 viewed from the pulley side.As shown in the figure, the heat sink is approximately U-shaped, and includes a positive electrode heat sink 12, a negative electrode heat sink 11
(See Figure 4) Each positive diode 1 is placed on top.
5. A negative electrode diode 16 is press-fitted and fixed, and its lead terminals are connected to each other by a terminal 18 embedded in a molded terminal 17. In this case, as shown in FIG. 3, two diodes 15 and 16 are arranged in parallel for each phase. A semiconductor regulator 20 is also incorporated to adjust the voltage of this generator, and controls the field current from three auxiliary diodes 19 connected to each phase. Further, a connection plate 21 is attached to the positive discharge plate 12 to obtain a DC output from the B terminal.
次に放熱板付近の実施例を詳細に第４図により
説明する。図示の如く正極放熱板１２の外径、負
極放熱板１１の外径、正極ダイオード１５の取付
中心形、負極ダイオード１６の取付中心径を
各々、D1，D2、d1，d2とすると、D1＞D2，d1＞
d2，d1≧D2なる位置関係に軸方向に重合配置す
ることにより、リヤーブラケツト４に設けた通風
孔よりＰ方向に吸入した冷却風は、正・負極の両
放熱板に当たることになり、通風抵抗が少なく
て、風速の速い部分である正極放熱板外周部に正
極ダイオード１５があるため、ブラケツトへの熱
伝導が期待出来ない正極放熱板を良好に冷却する
ことができる。負極放熱板１１に関してはブラケ
ツト４への直接取付が可能であり熱伝導の冷却効
果が大きいこと、また、冷却風Ｐに対して正極放
熱板１２よりも手前にあり、より低い温度の冷却
風が当ること等の理由により、放熱板の外径は
D1＞D2で充分であることが確認されている。ま
た従来はd1＝d2であり、正極放熱板の有効面積が
少ないものであるたが、d1＞d2とすることによ
り、正極ダイオード１５のアノード側に直接冷却
風を当てることが可能となるが、本方式は熱集中
の激しい放熱板（例えば鉄）等の場合には非常に
有効である。この正極放熱板の有効面積は負極に
比べD1＞D2で、かつ負極放熱板１１の外径部は
正極ダイオードの中心より小径としてあるため、
正極ダイオードの冷却面積としては大きなものと
なる。その上、正極放熱板の外径部の一部を冷風
の流れに沿つてリブ状に曲げて放熱面積を増やす
手法は外周側で風速が速いため更に有効となる。 Next, an embodiment near the heat sink will be explained in detail with reference to FIG. 4. As shown in the figure, if the outer diameter of the positive electrode heat sink 12, the outer diameter of the negative electrode heat sink 11, the mounting center diameter of the positive electrode diode 15, and the mounting center diameter of the negative electrode diode 16 are respectively D 1 , D 2 , d 1 , and d 2 , , D 1 > D 2 , d 1 >
By arranging them so that they overlap in the axial direction in a positional relationship such that d 2 , d 1 ≧ D 2 , the cooling air sucked in the P direction from the ventilation holes provided in the rear bracket 4 hits both the positive and negative heat sinks. Since the positive diode 15 is located on the outer periphery of the positive heat sink, which has low ventilation resistance and high wind speed, the positive heat sink, which cannot be expected to conduct heat to the bracket, can be cooled well. Regarding the negative electrode heat sink 11, it can be directly attached to the bracket 4, and the cooling effect of heat conduction is large.Also, it is located in front of the positive electrode heat sink 12 with respect to the cooling air P, so that the cooling air with a lower temperature can be used. Due to reasons such as contact, the outer diameter of the heat sink is
It has been confirmed that D 1 > D 2 is sufficient. In addition, conventionally, d 1 = d 2 , and the effective area of the positive electrode heat sink was small, but by setting d 1 > d 2 , it is possible to directly apply cooling air to the anode side of the positive electrode diode 15. However, this method is very effective in the case of heat sinks (for example, made of iron) where heat concentration is severe. The effective area of this positive electrode heat sink is D 1 >D 2 compared to the negative electrode, and the outer diameter of the negative electrode heat sink 11 is smaller in diameter than the center of the positive diode.
The cooling area for the positive diode is large. Furthermore, the method of increasing the heat radiation area by bending a part of the outer diameter portion of the positive electrode heat sink into a rib shape along the flow of cold air becomes even more effective because the wind speed is higher on the outer circumferential side.
以上、本発明によれば、正極放熱板の有効冷却
面積を増大させ、かつ負極側の発熱を負極放熱板
及びブラケツト等を介して放熱する構造なので、
整流装置の体格を大きくすることなく、効果的に
整流装置を冷却できる。 As described above, according to the present invention, the effective cooling area of the positive electrode heat sink is increased, and the heat generated on the negative electrode side is radiated through the negative electrode heat sink, the bracket, etc.
The rectifier can be effectively cooled without increasing the size of the rectifier.
第１図は本発明の一実施例による発電機の側面
図、第２図は同リヤーブラケツト内部の平面図、
第３図は同全体の結線図、第４図は同ダイオード
部分の側面図を示す。
４……リヤーブラケツト、１１……負極放熱
板、１２……正極放熱板、１５……正極ダイオー
ド、１６……負極ダイオード。
FIG. 1 is a side view of a generator according to an embodiment of the present invention, FIG. 2 is a plan view of the inside of the rear bracket,
FIG. 3 shows the overall wiring diagram, and FIG. 4 shows a side view of the diode portion. 4... Rear bracket, 11... Negative heat sink, 12... Positive heat sink, 15... Positive diode, 16... Negative diode.
Claims (1)
整流器の取付けられた負極放熱板を絶縁体を介し
て軸方向に重ね配置固定すると共に、該組体を回
転子の回転軸に交差する様に配置し、かつ前記負
極放熱板をフアンによる冷却風導入上流側に位置
するようにブラケツトに固定したものにおいて、
前記負極放熱板は少なくとも正極放熱板より表面
積を小とし、かつ該負極放熱板の外径部を、前記
正極放熱板より小径とすると共に前記正極整流器
の中心にフアン導入の冷却風が直接当たる形状と
したことを特徴とする自動車用後流発電機の整流
装置。 ２ 特許請求の範囲第１項記載において、前記負
極放熱板の少なくとも一部はブラケツトの内壁面
に直接固定されていることを特徴とする自動車用
交流発電機の整流装置。[Scope of Claims] 1. A positive electrode heat sink to which a positive electrode rectifier is attached and a negative electrode heat sink to which a negative electrode rectifier is attached are stacked and fixed in the axial direction with an insulator interposed therebetween, and the assembly is attached to the rotation axis of the rotor. and the negative electrode heat sink is fixed to a bracket so as to be located upstream of the cooling air introduced by the fan,
The negative electrode heat sink has a surface area smaller than at least the positive electrode heat sink, and the outer diameter portion of the negative electrode heat sink has a smaller diameter than the positive electrode heat sink, and is shaped so that the cooling air introduced by the fan directly hits the center of the positive electrode rectifier. A rectifying device for a wake generator for an automobile, characterized by the following. 2. A rectifying device for an automotive alternator according to claim 1, wherein at least a portion of the negative electrode heat sink is directly fixed to an inner wall surface of a bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58154891A JPS5956856A (en) | 1983-08-26 | 1983-08-26 | Rectifier of ac generator for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58154891A JPS5956856A (en) | 1983-08-26 | 1983-08-26 | Rectifier of ac generator for vehicle |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5030322A Division JPH0736687B2 (en) | 1993-02-19 | 1993-02-19 | Rectifier for automotive alternator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5956856A JPS5956856A (en) | 1984-04-02 |
| JPH0424945B2 true JPH0424945B2 (en) | 1992-04-28 |
Family
ID=15594208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58154891A Granted JPS5956856A (en) | 1983-08-26 | 1983-08-26 | Rectifier of ac generator for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5956856A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2583932A1 (en) * | 1985-06-24 | 1986-12-26 | Ducellier & Cie | ALTERNATOR FOR MOTOR VEHICLES OR THE LIKE |
| JP3458532B2 (en) * | 1995-06-02 | 2003-10-20 | 株式会社デンソー | Rectifier for automotive alternator |
| US6911750B2 (en) * | 2003-07-03 | 2005-06-28 | Delco Remy International, Inc. | Electronic package for electrical machine |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS448170Y1 (en) * | 1967-05-29 | 1969-03-29 | ||
| JPS544303A (en) * | 1977-06-11 | 1979-01-13 | Hitachi Ltd | All wave rectifying device of alternating current generator |
| JPS5852866Y2 (en) * | 1977-12-09 | 1983-12-01 | 三菱電機株式会社 | Rectifier for charging generator |
-
1983
- 1983-08-26 JP JP58154891A patent/JPS5956856A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5956856A (en) | 1984-04-02 |
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