JPS6224628B2 - - Google Patents
Info
- Publication number
- JPS6224628B2 JPS6224628B2 JP57032136A JP3213682A JPS6224628B2 JP S6224628 B2 JPS6224628 B2 JP S6224628B2 JP 57032136 A JP57032136 A JP 57032136A JP 3213682 A JP3213682 A JP 3213682A JP S6224628 B2 JPS6224628 B2 JP S6224628B2
- Authority
- JP
- Japan
- Prior art keywords
- centrifugal
- control plate
- advance angle
- weight
- weight support
- 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
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P5/00—Advancing or retarding ignition; Control therefor
- F02P5/04—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
- F02P5/05—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using mechanical means
- F02P5/06—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using mechanical means dependent on engine speed
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Description
【発明の詳細な説明】
本発明は、エンジン回転数の上昇に伴い、その
点火時期を進角するようにした、遠心式自動進角
装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a centrifugal automatic timing advance device that advances the ignition timing as the engine speed increases.
従来、この種自動進角装置として、エンジンに
連動して回転する回転軸に重錘支台を一体に設
け、その重錘支台にエンジン回転数の上昇に伴い
外方へ揺動する遠心重錘を軸支し、その遠心重錘
の揺動に伴い回転して点火時期を進角する制御板
を回転軸に回転可能に支承させ、遠心重錘に、そ
れを内方揺動方向に付勢する戻しばねを接続した
ものが知られている。 Conventionally, this type of automatic advance device has a weight support that is integrated with a rotating shaft that rotates in conjunction with the engine, and a centrifugal weight that swings outward as the engine speed increases. A control plate that pivots a weight and rotates as the centrifugal weight swings to advance the ignition timing is rotatably supported on the rotating shaft, and is attached to the centrifugal weight in the direction of inward swinging. A device in which a return spring is connected is known.
上記装置においては、制御板の最大回転角を一
定角度に規定するストツパ手段を制御板と重錘支
台との間に設け、これにより最大進角度を規定し
ているので、１台の自動進角装置は１つの最大進
角度をもつことになる。しかしながら、排気量、
出力、常用回転数等の諸元を異にする各種エンジ
ンにおいては、一般に各機種毎に最大進角度を異
にするものであるから、各機種毎にそれに適合す
る最大進角度をもつ自動進角装置を製造しなけれ
ばならず、量産性が悪いという不具合がある。 In the above device, a stopper means that regulates the maximum rotation angle of the control plate to a constant angle is provided between the control plate and the weight support, and this defines the maximum advance angle. The angle device will have one maximum advance angle. However, the displacement,
In various engines with different specifications such as output and normal rotation speed, the maximum advance angle is generally different for each model, so an automatic advance angle that has a maximum advance angle that suits each model is required. The problem is that the device has to be manufactured, making it difficult to mass-produce.
本発明は上記に鑑み、１台の自動進角装置に最
大進角度変更機能を保有させ、これによりエンジ
ンの諸元に対応してそれに適合する最大進角度を
選択し得るようにした、汎用性および量産性の優
れた、前記自動進角装置を提供することを目的と
する。 In view of the above, the present invention provides versatility by providing one automatic advance angle device with a function of changing the maximum advance angle, thereby allowing the maximum advance angle to be selected in accordance with the specifications of the engine. Another object of the present invention is to provide the automatic advance angle device, which is excellent in mass production.
そして上記目的を達成するために本発明は、エ
ンジンに連動して回転する回転軸に重錘支台を一
体に設け、その重錘支台にエンジン回転数の上昇
に伴い外方へ揺動する遠心重錘を軸支し、その遠
心重錘の外方への揺動に伴い回転して点火時期を
進角する制御板を前記回転軸に回転可能に支承さ
せ、前記遠心重錘に、それを内方揺動方向に付勢
する戻しばねを接続した遠心式自動進角装置にお
いて、前記制御板にストツパピンを植設し、前記
重錘支台に、前記ストツパピンと選択的に係合し
得る複数の最大進角度規定用切欠き部を形成し、
これら切欠き部の、制御板回転方向の幅を互いに
異ならせたことを特徴とする。 In order to achieve the above object, the present invention provides a rotary shaft that rotates in conjunction with the engine, and a weight support that is integrally provided with a weight support that swings outward as the engine speed increases. A centrifugal weight is pivotally supported, and a control plate that rotates and advances ignition timing as the centrifugal weight swings outward is rotatably supported on the rotating shaft. In a centrifugal automatic advance device connected to a return spring that biases the control plate in an inward swinging direction, a stopper pin may be implanted in the control plate, and the stopper pin may be selectively engaged with the weight support. Forming a plurality of notches for defining the maximum advance angle,
A feature is that the widths of these notches in the direction of rotation of the control plate are made different from each other.
以下、図面により本発明の一実施例について説
明すると、１はエンジンのカム軸等に連動して回
転する回転軸で、その回転軸１に、それと一体に
回転し得るように重錘支台２が嵌着される。重錘
支台２上には、回転軸１を中心として点対称の関
係に、平面図で略Ｌ字形をなす一対の遠心重錘３
１，３２が回転軸１を囲むように配設され、それ
らの一端部は支承ピン４，４を介して重錘支台２
に揺動自在に支承される。回転軸１の重錘支台２
からの突出部には、図示しないパルスジエネレー
タの中空ロータ軸５が回転可能に嵌合され、その
ロータ軸５の下端部に制御板６がロータ軸５と一
体に回転し得るように嵌着される。制御板６は平
面図で略Ｌ字形をなし、それの両内側屈曲部で両
遠心重錘３１，３２の支承部をそれぞれ挟むよう
に配設される。 Hereinafter, one embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a rotating shaft that rotates in conjunction with the camshaft of an engine, and a weight support 2 is attached to the rotating shaft 1 so as to be able to rotate together with it. is fitted. On the weight support 2, there are a pair of centrifugal weights 3 which are approximately L-shaped in plan view and are symmetrical about the rotation axis 1.
1 and 3 2 are arranged so as to surround the rotating shaft 1, and one end thereof is connected to the weight support 2 through support pins 4, 4.
It is supported so that it can swing freely. Weight support base 2 of rotating shaft 1
A hollow rotor shaft 5 of a pulse generator (not shown) is rotatably fitted into the protrusion from the rotor shaft 5, and a control plate 6 is fitted onto the lower end of the rotor shaft 5 so as to be able to rotate together with the rotor shaft 5. be done. The control plate 6 has a substantially L-shape in plan view, and is disposed such that its inner bent portions sandwich the support portions of the centrifugal weights 3 1 and 3 2 , respectively.
制御板６の両外側屈曲部にはそれぞれストツパ
ピン７１，７２が圧入されている。両ストツパピ
ン７１，７２の制御板６より突出する大径部７
ａ，７ａは、重錘支台２の外周縁において回転軸
１を中心として点対称の関係に形成された最大進
角度規制用の一組の切欠き部８４，８４にそれぞ
れ移動可能に係合されている。一方のストツパピ
ン７１の制御板６より突出する小径部７ｂと、そ
れと最も近い位置で対向する、一方の遠心重錘３
１より突出する支承ピン４との間にはコイル状第
１戻しばね９１が張設され、この第１戻しばね９
１の引張り力により各ストツパピン７１，７２は
各切欠き部８４，８４の一端に係合し、また制御
板６の各内側屈曲部が各遠心重錘３１，３２の支
承部に当接して各遠心重錘３１，３２を内方へ揺
動させている。また他方のストツパピン７２の制
御板６より突出する小径部７ｂと、それと最も近
い位置で対向する、他方の遠心重錘３２より突出
する支承ピン４との間にはコイル状第２戻しばね
９２の両フツク部９ａ，９ｂが掛けられている。
この場合ストツパピン７２の小径部７ｂは通常は
フツク部９ｂの屈曲部分から離間しており、制御
板６が回転してストツパピン７２が所定長さ移動
した後小径部７ｂがフツク部９ｂの屈曲部分に係
合するようになつている。 Stopper pins 7 1 and 7 2 are press-fitted into both outer bent portions of the control plate 6, respectively. Large diameter portions 7 protruding from the control plate 6 of both stopper pins 7 1 , 7 2
a and 7a are respectively movable into a pair of notches 8 4 and 8 4 for regulating the maximum advance angle, which are formed in a point-symmetrical relationship around the rotation axis 1 on the outer peripheral edge of the weight support 2. engaged. A small diameter portion 7b protruding from the control plate 6 of one stopper pin 7 1 and one centrifugal weight 3 facing the small diameter portion 7b at the closest position.
A coiled first return spring 91 is stretched between the support pin 4 protruding from the support pin 4, and this first return spring 9
1 , each stopper pin 7 1 , 7 2 engages with one end of each notch 8 4 , 8 4 , and each inner bent portion of control plate 6 supports each centrifugal weight 3 1 , 3 2 . The centrifugal weights 3 1 and 3 2 are made to swing inward by contacting the centrifugal weights 3 1 and 3 2 . In addition, a coiled second return spring is provided between the small diameter portion 7b of the other stopper pin 72 that protrudes from the control plate 6 and the support pin 4 that protrudes from the other centrifugal weight 32 , which faces the small diameter portion 7b at the closest position. Both hook portions 9a and 9b of 92 are hung.
In this case, the small diameter portion 7b of the stopper pin 72 is normally spaced apart from the bent portion of the hook portion 9b, and after the control plate 6 rotates and the stopper pin 72 moves a predetermined length, the small diameter portion 7b bends the hook portion 9b. It is adapted to engage the part.
上記構成において、エンジンを始動すると、回
転軸１を介して重錘支台２が矢示Ａ方向に回転す
るので、制御板６およびロータ軸５が同方向に回
転し、パルスジエネレータからの出力信号により
点火系統が制御されてエンジンが点火される。エ
ンジン回転数が所定値に達すると、両遠心重錘３
１，３２は、それらに働く遠心力の和が第１戻し
ばね９１のセツト荷重に打勝つため外方へ揺動を
開始し、それに伴い制御板６が矢示Ａ方向に回転
するのでロータ軸５を介してパルスジエネレータ
の出力信号発生時期が早められ、点火時期が進角
される。そして制御板６の一方のストツパピン７
２が第２戻しばね９２と係合すると、今度は第２
戻しばね９２のセツト荷重が制御板６に戻し力と
して作用するので点火時期の進角度合がやや緩や
かに制御され、その後各ストツパピン７１，７２
が各切欠部８４，８４の端部に当接すると、点火
時期は最大進角度に保持される。 In the above configuration, when the engine is started, the weight support 2 rotates in the direction of arrow A via the rotating shaft 1, so the control plate 6 and the rotor shaft 5 rotate in the same direction, and the output from the pulse generator is The signal controls the ignition system and ignites the engine. When the engine speed reaches a predetermined value, both centrifugal weights 3
1 , 3, and 2 begin to swing outward because the sum of the centrifugal force acting on them overcomes the set load of the first return spring 91 , and the control plate 6 rotates in the direction of arrow A accordingly. The output signal generation timing of the pulse generator is advanced through the rotor shaft 5, and the ignition timing is advanced. And one stopper pin 7 of the control board 6
2 engages with the second return spring 92 , this time the second
Since the set load of the return spring 92 acts as a return force on the control plate 6, the advance angle of the ignition timing is controlled somewhat gently, and then each stopper pin 71 , 72
When the ignition timing contacts the ends of the notches 8 4 , 8 4 , the ignition timing is maintained at the maximum advance angle.
本発明においては、前記自動進角装置に以下に
述べるような最大進角度変更機能を保有させてあ
る。 In the present invention, the automatic advance angle device has a maximum advance angle changing function as described below.
即ち、第３図に示すように、重錘支台２の外周
縁には、回転軸１を中心として点対称の関係に２
個１組とする、４組の最大進角度規制用切欠き部
８１〜８４（前記１組の切欠き部８４，８４を含
む）が形成され、それら切欠き部８１〜８４の周
方向、即ち制御板６回転方向の幅は各組毎に異な
つており、図示例における幅関係はW1＞W2＞W3
＞W4に設定される。 That is, as shown in FIG.
Four sets of maximum advance angle regulating notches 8 1 to 8 4 (including the above-mentioned one set of notches 8 4 and 8 4 ) are formed, and each of these notches 8 1 to 8 4 in the circumferential direction, that is, the width in the rotational direction of the control plate 6, differs for each set, and the width relationship in the illustrated example is W 1 > W 2 > W 3
> W Set to 4 .
したがつて制御板６の両ストツパピン７１，７
２を最小幅W4の切欠き部８４，８４に係合すれ
ば最大進角度が最も小さく設定され、逆に最大幅
W1の切欠き部８１，８１に係合すれば最大進角
度が最も大きく設定される。このように１台の自
動進角装置に４種の最大進角度変更機能を保有さ
せておくことにより、４種のエンジンに容易に適
用することができ、量産性の優れたものが得られ
る。 Therefore, both stopper pins 7 1 , 7 of the control board 6
2 to the notches 8 4 , 8 4 with the minimum width W 4 , the maximum advance angle is set to the smallest, and conversely, the maximum advance angle is set to the smallest.
When engaged with the notches 8 1 , 8 1 of W 1 , the maximum advance angle is set to be the largest. By allowing one automatic advance angle device to have four types of maximum advance angle changing functions in this manner, it can be easily applied to four types of engines, and an apparatus with excellent mass productivity can be obtained.
重錘支台２の回転軸１回りには、それを中心と
して点対称の関係に２個１組とする、４組の同一
直径のピン孔１０１〜１０４が円周上等間隔に形
成され、それら各組のピン孔１０１〜１０４には
両遠心重錘３１，３２の支承ピン４，４が嵌着さ
れる。これにより制御板６を最大進角度変更のた
めに移動させたとき、それに各遠心重錘３１，３
２を対応させて移動させることができる。 Around the rotation axis of the weight support 2, four sets of two pin holes 101 to 104 of the same diameter are formed at equal intervals on the circumference in a point-symmetrical relationship around the rotation axis. The support pins 4, 4 of both centrifugal weights 31 , 32 are fitted into the respective sets of pin holes 101 to 104. As a result, when the control plate 6 is moved to change the maximum advance angle, each centrifugal weight 3 1 , 3
2 can be moved correspondingly.
以上のように本発明によれば、エンジンに連動
して回転する回転軸１に重錘支台２を一体に設
け、その重錘支台２にエンジン回転数の上昇に伴
い外方へ揺動する遠心重錘３１，３２を軸支し、
その遠心重錘３１，３２の外方への揺動に伴い回
転して点火時期を進角する制御板６を前記回転軸
１に回転可能に支承させ、前記遠心重錘３１，３
２に、それを内方揺動方向に付勢する戻しばね９
１，９２を接続した遠心式自動進角装置におい
て、前記制御板６にストツパピン７１，７２を植
設し、前記重錘支台２に、前記ストツパピン７
１，７２と選択的に係合し得る複数の最大進角度
規定用切欠き部８１〜８４を形成し、これら切欠
き部８１〜８４の、制御板６回転方向の幅W1〜
W4を互いに異ならせたので、前記ストツパピン
７１，７２と最大進角度規定用切欠き部８１，８
４との係合関係を単に変更するだけで、自動進角
装置の最大進角度を簡単に変えることができ、従
つて、一種類の自動進角装置においても、エンジ
ンの諸元に対応してそれに適合する最大進角度を
適宜選択することができるから、その汎用性及び
量産性を著しく高めることができる。 As described above, according to the present invention, the weight support 2 is integrally provided on the rotating shaft 1 that rotates in conjunction with the engine, and the weight support 2 swings outward as the engine speed increases. The centrifugal weights 3 1 and 3 2 are pivotally supported,
A control plate 6 that rotates and advances the ignition timing as the centrifugal weights 3 1 , 3 2 swing outward is rotatably supported on the rotating shaft 1 , and the centrifugal weights 3 1 , 3
2 , a return spring 9 that biases it in the direction of inward swinging;
In the centrifugal automatic advance device in which the stopper pins 7 1 , 7 2 are connected to the control plate 6 , the stopper pins 7 1 , 7 2 are installed in the weight support base 2 .
A plurality of maximum advance angle defining notches 8 1 to 8 4 that can be selectively engaged with 1 and 7 2 are formed, and the width W of these notches 8 1 to 8 4 in the rotational direction of the control plate 6 is 1 ～
Since W 4 is made different from each other, the stopper pins 7 1 , 7 2 and the maximum advance angle defining notches 8 1 , 8
By simply changing the engagement relationship with 4 , the maximum advance angle of the automatic advance angle device can be easily changed. Since the maximum advance angle that is compatible with this can be appropriately selected, its versatility and mass productivity can be significantly improved.
図面は本発明の一実施例を示すもので、第１図
は全体の平面図、第２図は第１図―線断面
図、第３図は重錘支台の平面図である。
１…回転軸、２…重錘支台、３１，３２…遠心
重錘、６…制御板、７１，７２…ストツパピン、
８１〜８４…切欠き部、９１，９２…第１、第２
戻しばね、W1〜W4…幅。
The drawings show one embodiment of the present invention, and FIG. 1 is a plan view of the whole, FIG. 2 is a sectional view taken along the line of FIG. 1, and FIG. 3 is a plan view of a weight support. DESCRIPTION OF SYMBOLS 1... Rotating shaft, 2... Weight support base, 3 1 , 3 2 ... Centrifugal weight, 6... Control board, 7 1 , 7 2 ... Stopper pin,
8 1 to 8 4 ... notch portion, 9 1 , 9 2 ... first, second
Return spring, W 1 ~ W 4 ...width.
Claims (1)
支台２を一体に設け、その重錘支台２にエンジン
回転数の上昇に伴い外方へ揺動する遠心重錘３
１，３２を軸支し、その遠心重錘３１，３２の外
方への揺動に伴い回転して点火時期を進角する制
御板６を前記回転軸１に回転可能に支承させ、前
記遠心重錘３１，３２に、それを内方揺動方向に
付勢する戻しばね９１，９２を接続した遠心式自
動進角装置において、前記制御板６にストツパピ
ン７１，７２を植設し、前記重錘支台２に、前記
ストツパピン７１，７２と選択的に係合し得る複
数の最大進角度規定用切欠き部８１〜８４を形成
し、これら切欠き部８１〜８４の、制御板６回転
方向の幅W1〜W4を互いに異ならせたことを特徴
とする、遠心式自動進角装置。1 A weight support 2 is integrally provided on a rotating shaft 1 that rotates in conjunction with the engine, and a centrifugal weight 3 that swings outward as the engine speed increases is mounted on the weight support 2.
A control plate 6 which pivotally supports the centrifugal weights 3 1 and 3 2 and advances the ignition timing by rotating as the centrifugal weights 3 1 and 3 2 swing outward is rotatably supported on the rotating shaft 1 . , in a centrifugal automatic advance device in which the centrifugal weights 3 1 , 3 2 are connected to return springs 9 1 , 9 2 that urge them in the inward swinging direction, the control plate 6 is provided with stopper pins 7 1 , 7 2 is implanted, and a plurality of maximum advance angle defining notches 8 1 to 8 4 that can selectively engage with the stopper pins 7 1 and 7 2 are formed in the weight support 2, and these A centrifugal automatic advance angle device characterized in that the widths W 1 to W 4 of the notches 8 1 to 8 4 in the direction of rotation of the control plate 6 are made different from each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3213682A JPS58150072A (en) | 1982-03-01 | 1982-03-01 | Centrifugal type automatic spark advance controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3213682A JPS58150072A (en) | 1982-03-01 | 1982-03-01 | Centrifugal type automatic spark advance controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58150072A JPS58150072A (en) | 1983-09-06 |
| JPS6224628B2 true JPS6224628B2 (en) | 1987-05-29 |
Family
ID=12350473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3213682A Granted JPS58150072A (en) | 1982-03-01 | 1982-03-01 | Centrifugal type automatic spark advance controller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58150072A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07104213B2 (en) * | 1990-07-27 | 1995-11-13 | 日本碍子株式会社 | Heating device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5924836Y2 (en) * | 1979-10-22 | 1984-07-23 | 三菱重工業株式会社 | Internal combustion engine speed governor |
-
1982
- 1982-03-01 JP JP3213682A patent/JPS58150072A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07104213B2 (en) * | 1990-07-27 | 1995-11-13 | 日本碍子株式会社 | Heating device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58150072A (en) | 1983-09-06 |
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