JPH0750851Y2 - Flywheel magnet rotor - Google Patents
Flywheel magnet rotorInfo
- Publication number
- JPH0750851Y2 JPH0750851Y2 JP1989084302U JP8430289U JPH0750851Y2 JP H0750851 Y2 JPH0750851 Y2 JP H0750851Y2 JP 1989084302 U JP1989084302 U JP 1989084302U JP 8430289 U JP8430289 U JP 8430289U JP H0750851 Y2 JPH0750851 Y2 JP H0750851Y2
- Authority
- JP
- Japan
- Prior art keywords
- flywheel
- magnet
- peripheral wall
- attached
- wall portion
- 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
Landscapes
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Description
【考案の詳細な説明】 ［産業上の利用分野］ 本考案は、内燃機関等に取付けられる磁石発電機に用い
るフライホイール磁石回転子に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a flywheel magnet rotor used in a magnet generator installed in an internal combustion engine or the like.
［従来の技術］ 従来のフライホイール磁石回転子は、第５図及び第６図
に示したように、カップ状に形成された鉄製のフライホ
イール１と、該フライホイール１の周壁部1aの内周に取
付けられた複数（図示の例では４個）の円弧状の永久磁
石２とからなっている。フライホイール１の周壁部1aは
円筒状に形成され、永久磁石２は周壁部1aの内周に周方
向に等間隔をあけて接着により取付けられている。フラ
イホイール１の底壁部1bの中央には孔1cが設けられ、こ
の孔に回転軸取り付け用のボス３が嵌合されている。ボ
ス３はフライホイールの底壁部1bの外面に当接する鍔部
3aを有し、該鍔部3aがリベット４により底壁部1bに固定
されている。[Prior Art] As shown in FIGS. 5 and 6, a conventional flywheel magnet rotor includes a cup-shaped iron flywheel 1 and a peripheral wall portion 1a of the flywheel 1. It is composed of a plurality of (four in the illustrated example) arc-shaped permanent magnets 2 attached to the circumference. The peripheral wall portion 1a of the flywheel 1 is formed in a cylindrical shape, and the permanent magnets 2 are attached to the inner periphery of the peripheral wall portion 1a by bonding at equal intervals in the circumferential direction. A hole 1c is provided at the center of the bottom wall portion 1b of the flywheel 1, and a boss 3 for mounting a rotary shaft is fitted in this hole. The boss 3 is a collar portion that comes into contact with the outer surface of the bottom wall portion 1b of the flywheel.
3a, and the collar 3a is fixed to the bottom wall 1b by a rivet 4.
この磁石回転子は例えば内燃機関の出力軸に取付けら
れ、磁石２の内側に配置される電機子のコイルに電圧を
誘起させる。This magnet rotor is attached to the output shaft of an internal combustion engine, for example, and induces a voltage in a coil of an armature arranged inside the magnet 2.
［考案が解決しようとする課題］ 最近、内燃機関の高出力化及び高回転化が図られる傾向
にあり、それに伴ってフライホイール磁石回転子が高速
で使用される頻度が高くなっている。高速領域まで回転
させられるフライホイール磁石回転子では、回転変動や
振動が大きくなるため、フライホイールの剛性を高くす
ることが要求される。[Problems to be Solved by the Invention] Recently, there has been a tendency to increase the output and the rotation of the internal combustion engine, and accordingly, the flywheel magnet rotor is frequently used at high speed. In a flywheel magnet rotor that can be rotated up to a high speed region, fluctuations in rotation and vibrations increase, and therefore, it is required to increase rigidity of the flywheel.
従来のフライホイール磁石回転子を高速で回転させた場
合、第５図に矢印Ａで示したように、遠心力により磁石
２が径方向の外側に引っ張られ、これによりフライホイ
ールの周壁部1aが外径方向に膨らむ。そのため矢印Ｂで
示したようにフライホイールの周壁部1aに周方向の伸び
が生じて磁石２と周壁部1aとの間の接着剤層に剪断力が
働き、磁石の固定力が低下する恐れがあった。When the conventional flywheel magnet rotor is rotated at high speed, the magnet 2 is pulled outward in the radial direction by the centrifugal force as shown by an arrow A in FIG. 5, whereby the peripheral wall portion 1a of the flywheel is Swells outward. Therefore, as shown by the arrow B, the circumferential wall portion 1a of the flywheel is stretched in the circumferential direction, and the shearing force acts on the adhesive layer between the magnet 2 and the circumferential wall portion 1a, which may reduce the fixing force of the magnet. there were.
また第７図に示したように、磁石２の内周に磁極片５を
配置して、この磁極片５をリベット6,6等の締結手段に
よりフライホイールの周壁部1aに締結したフライホイー
ル磁石回転子もあるが、この場合にも遠心力によりフラ
イホイールの周壁部1aに伸びが生じるとリベッキ６等の
締結手段に剪断力が生じるため、高速で回転させると磁
石の固定力が低下する恐れがあった。Further, as shown in FIG. 7, a flywheel magnet in which a pole piece 5 is arranged on the inner circumference of the magnet 2 and the pole piece 5 is fastened to the peripheral wall portion 1a of the flywheel by fastening means such as rivets 6,6. There is also a rotor, but in this case as well, if the peripheral wall portion 1a of the flywheel is stretched by centrifugal force, a shearing force will be generated in the fastening means such as the rebeke 6, so if it is rotated at high speed, the fixing force of the magnet may decrease. was there.
本考案の目的は、磁石の取付け強度が低下する恐れを無
くしたフライホイール磁石回転子を提供することにあ
る。An object of the present invention is to provide a flywheel magnet rotor that eliminates the risk of a reduction in magnet mounting strength.
［課題を解決するための手段］ 本考案は、ほぼカップ状に形成されたフライホイールの
周壁部の内周に複数の永久磁石を周方向に間隔をあけて
取付けたフライホイール磁石回転子に係わるもので、本
考案においては、フライホイールの周壁部の各永久磁石
が取り付けられた部分は円筒状に形成された円筒部とな
っており、永久磁石相互間の間隙に相応する部分は円筒
部よりも径方向の外側に膨らんだ形状に形成れた凸部と
なっている。[Means for Solving the Problems] The present invention relates to a flywheel magnet rotor in which a plurality of permanent magnets are attached to the inner periphery of a peripheral wall portion of a flywheel formed in a substantially cup shape at intervals in the circumferential direction. In the present invention, the part of the peripheral wall of the flywheel where the permanent magnets are attached is a cylindrical part formed in a cylindrical shape, and the part corresponding to the gap between the permanent magnets is more than the cylindrical part. Also has a convex portion formed in a shape that bulges outward in the radial direction.
［作用］ 上記のフライホイール磁石回転子が高速回転すると、フ
ライホイールの周壁部の凸部の両端が外側に変位して、
フライホイールの周壁部の磁石が取付けられた円筒部を
磁石と共に径方向の外側に変位させる。そのためフライ
ホイールの周壁部の磁石が取付けられている円筒部はほ
とんど変形することがなく、磁石とフライホイールの周
壁部との間の接着剤層に剪断力が作用したり、磁石をフ
ライホイールの周壁部に固定するリベットやボルト等の
締結手段に剪断力が作用したりするのを防ぐことができ
る。従って本考案によれば、遠心力により磁石の取付け
強度が低下する恐れを無くすことができ、高速回転に耐
えるフライホイール磁石回転子を得ることができる。[Operation] When the flywheel magnet rotor rotates at a high speed, both ends of the convex portion of the peripheral wall of the flywheel are displaced outward,
The cylindrical portion of the flywheel on which the magnet is attached is displaced radially outward together with the magnet. Therefore, the cylindrical part of the peripheral wall of the flywheel to which the magnet is attached is hardly deformed, and shearing force acts on the adhesive layer between the magnet and the peripheral wall of the flywheel, or the magnet is attached to the flywheel. It is possible to prevent shearing force from acting on fastening means such as rivets and bolts that are fixed to the peripheral wall portion. Therefore, according to the present invention, it is possible to eliminate the risk that the attachment strength of the magnet will be reduced by centrifugal force, and to obtain a flywheel magnet rotor that can withstand high-speed rotation.
［実施例］ 以下添付図面を参照して本考案の実施例を説明する。[Embodiment] An embodiment of the present invention will be described below with reference to the accompanying drawings.
第１図及び第２図は本考案の実施例を示したもので、こ
れらの図において11は鉄製のフライホイール、12はフラ
イホイール11の周壁部11aの内周に、周方向に等間隔を
あけて取付けられた円弧状の永久磁石である。フライホ
イールの周壁部11aの各永久磁石12が取付けられる部分
は従来のものと同様に円筒状に形成された円筒部11a1と
なっていて、各磁石12は各円筒部11a1の内周に添わせて
配置されて接着剤により該円筒部に固定されている。FIGS. 1 and 2 show an embodiment of the present invention. In these drawings, 11 is a flywheel made of iron, 12 is an inner circumference of a peripheral wall portion 11a of the flywheel 11, and equidistantly in the circumferential direction. It is an arc-shaped permanent magnet that is installed by being opened. The portion of the peripheral wall portion 11a of the flywheel to which the permanent magnets 12 are attached is a cylindrical portion 11a1 that is formed in a cylindrical shape similar to the conventional one, and each magnet 12 is attached to the inner circumference of each cylindrical portion 11a1. They are arranged side by side and fixed to the cylindrical portion with an adhesive.
フライホイール11の磁石12,12,…相互間の間隙にそれぞ
れ相応する部分は円筒部11a1よりも径方向の外側に円弧
状に膨らんだ形状に形成されてた凸部11a2となってい
る。Magnets 12 and 12 of the flywheel 11, ... respectively corresponding portions in the gap between them has a convex portion 11 a2 that has been formed on the bulged in a circular arc shape outward in the radial direction from the cylindrical portion 11 a1 .
フライホイールの底壁部11bの中央には孔11cが形成さ
れ、この孔の回転軸取付け用のボス13が嵌合されてい
る。ボス13はその一端に鍔部13aを有し、該鍔部13aがフ
ライホイールの底壁部11bの外面に当接されて、多数の
リベット14により底壁部11bに締結されている。A hole 11c is formed at the center of the bottom wall portion 11b of the flywheel, and a boss 13 for mounting the rotary shaft of this hole is fitted therein. The boss 13 has a flange portion 13a at one end thereof, and the flange portion 13a is brought into contact with the outer surface of the bottom wall portion 11b of the flywheel and fastened to the bottom wall portion 11b by a large number of rivets 14.
上記のフライホイール11は、鉄板を絞り加工することに
より容易に製造できる。The flywheel 11 can be easily manufactured by drawing an iron plate.
上記のフライホイール磁石回転子の静止状態と高速回転
時の状態とを第４図に示してある。第４図において破線
は静止時の状態を、実線は高速回転時の状態をそれぞれ
示している。FIG. 4 shows the stationary state of the flywheel magnet rotor and the state during high-speed rotation. In FIG. 4, a broken line shows a stationary state and a solid line shows a high-speed rotating state.
本考案の磁石回転子では、各磁石12が取付けられている
フライホイールの円筒部11a1の両端がそれぞれ外側に凸
に湾曲した形状の凸部11a2，11a2につながっているた
め、高速回転時に遠心力により磁石12が径方向の外側に
引っ張られると各凸部11a2の両端部が矢印Ａ′で示した
ように径方向の外側に変位し、磁石12が取付けられてい
る円筒部11a1は周方向の伸びを生じることなく磁石と共
に径方向の外側に変位する。従ってフライホイールの周
壁部の円筒部11a1と磁石12との間には相対的な変位が生
ぜず、両者間に介在する接着剤層に剪断力が作用するこ
とはない。In the magnet rotor of the present invention, since both ends of the cylindrical portion 11a1 of the flywheel to which each magnet 12 is attached are connected to the convex portions 11a2 and 11a2 , which are curved in a convex shape to the outside, a high speed rotation is achieved. At times, when the magnet 12 is pulled outward in the radial direction by centrifugal force, both ends of each convex portion 11a2 are displaced outward in the radial direction as indicated by the arrow A ', and the cylindrical portion 11 to which the magnet 12 is attached is displaced. a1 displaces radially outward together with the magnet without stretching in the circumferential direction. Thus between the peripheral wall portion cylindrical portion 11 a1 and the magnet 12 of the flywheel not generated relative displacement and does not shear to the adhesive layer interposed therebetween acts.
上記の実施例では、各凸部11a2がフライホイールの軸線
方向と平行に延びるように設けられているが、第３図に
示すように、各凸部11a2にフライホイールの開口端部側
に向かうに従って次第に径方向の外側に向かう向きのテ
ーパをつけても良い。In the above-mentioned embodiment, each convex portion 11a2 is provided so as to extend parallel to the axial direction of the flywheel. However, as shown in FIG. 3, each convex portion 11a2 is provided on the opening end side of the flywheel. The taper may be gradually tapered toward the outside in the radial direction.
上記の各実施例では、磁石12を接着によりフライホイー
ルに固定するようにしたが、リベットやボルトにより固
定する場合にも本考案を適用できるのはもちろんであ
る。In each of the above-mentioned embodiments, the magnet 12 is fixed to the flywheel by adhesion, but it goes without saying that the present invention can be applied to the case where the magnet 12 is fixed by rivets or bolts.
上記の実施例では、フライホイールの周壁部の内周に４
個の磁石を取付けているが、磁石の個数は任意であり、
２以上の磁石が取付けられる場合に本考案を適用でき
る。上記の実施例では、ボス13がフライホイールと別体
に設けられているが、フライホイールに一体に回転軸取
付け用のボス部を設ける場合にも本考案を適用できる。In the above embodiment, the inner circumference of the peripheral wall of the flywheel is 4
Although the magnets are attached, the number of magnets is arbitrary,
The present invention can be applied when two or more magnets are attached. In the above embodiment, the boss 13 is provided separately from the flywheel, but the present invention can be applied to the case where the boss portion for mounting the rotary shaft is provided integrally with the flywheel.
［考案の効果］ 以上のように、本考案によれば、フライホイールの周壁
部の磁石が取り付けられた部分を円筒部とし、磁石相互
間の間隙に相応する部分を円筒部よりも径方向の外側に
膨らんだ形状を有する凸部としたので、高速回転時に、
フライホイールの周壁部の凸部の両端を外側に変位させ
て、フライホイールの周壁部の磁石が取付けられた円筒
部を磁石と共に径方向の外側に変位させることができ
る。そのためフライホイールの周壁部の磁石が取付けら
れている部分はほとんど変形することがなく、磁石とフ
ライホイールの周壁部との間の接着剤層に剪断力が作用
したり、磁石をフライホイールの周壁部に固定するリベ
ット等の締結手段に剪断力が作用したりするのを防ぐこ
とができる。従って本考案によれば、遠心力により磁石
の取付け強度が低下する恐れを無くすことができ、高速
回転に耐えるフライホイール磁石回転子を得ることがで
きる利点がある。[Advantage of the Invention] As described above, according to the present invention, the portion of the peripheral wall of the flywheel where the magnets are attached is the cylindrical portion, and the portion corresponding to the gap between the magnets is located in the radial direction more than the cylindrical portion. Since it is a convex part that has a shape that bulges outward, when rotating at high speed,
Both ends of the convex portion of the peripheral wall portion of the flywheel can be displaced outward so that the cylindrical portion of the peripheral wall portion of the flywheel to which the magnet is attached can be displaced radially outward together with the magnet. Therefore, the part of the peripheral wall of the flywheel where the magnet is attached hardly deforms, and shearing force acts on the adhesive layer between the magnet and the peripheral wall of the flywheel, or the magnet is attached to the peripheral wall of the flywheel. It is possible to prevent a shearing force from acting on a fastening means such as a rivet that is fixed to the portion. Therefore, according to the present invention, there is an advantage that a flywheel magnet rotor that can endure high-speed rotation can be obtained because it is possible to eliminate the risk that the attachment strength of the magnet is deteriorated by centrifugal force.
第１図は本考案の実施例を示す正面図、第２図は第１図
のII−II線断面図、第３図は本考案の他の実施例を示す
第２図と同様の断面図、第４図は第１図の実施例のフラ
イホイール磁石回転子の静止時及び高速回転時の状態を
示した説明図、第５図は従来のフイラホイール磁石回転
子の正面図、第６図は第５図のVI−VI線断面図、第７図
は他の従来例の要部を示す正面図である。 11……フライホイール、11a……周壁部、11a1……円筒
部、11a2……凸部、11b……底壁部、12……永久磁石、1
3……ボス。1 is a front view showing an embodiment of the present invention, FIG. 2 is a sectional view taken along line II-II of FIG. 1, and FIG. 3 is a sectional view similar to FIG. 2 showing another embodiment of the present invention. FIG. 4 is an explanatory view showing a state of the flywheel magnet rotor according to the embodiment of FIG. 1 at rest and at high speed rotation, FIG. 5 is a front view of a conventional filler wheel magnet rotor, and FIG. 6 is FIG. 5 is a sectional view taken along the line VI-VI, and FIG. 7 is a front view showing the main part of another conventional example. 11 ...... flywheel, 11a ... peripheral wall, 11 a1 ... cylindrical, 11 a2 ... convex, 11b ... bottom wall, 12 ... permanent magnet, 1
3 ... Boss.
Claims (1)
の周壁部の内周に複数の永久磁石を周方向に間隔をあけ
て取付けてなるフライホイール磁石回転子において、 前記フライホイールの周壁部の各永久磁石が取り付けら
れた部分は円筒状に形成された円筒部となっており、該
周壁部の永久磁石相互間の間隙に相応する部分は前記円
筒部よりも径方向の外側に膨らんだ形状に形成された凸
部となっていることを特徴とするフライホイール磁石回
転子。1. A flywheel magnet rotor in which a plurality of permanent magnets are attached to the inner circumference of a peripheral wall portion of a flywheel formed in a substantially cup shape at intervals in the circumferential direction, wherein the peripheral wall portion of the flywheel is The portion to which each permanent magnet is attached is a cylindrical portion formed in a cylindrical shape, and the portion of the peripheral wall portion corresponding to the gap between the permanent magnets has a shape that bulges outward in the radial direction from the cylindrical portion. A flywheel magnet rotor characterized in that it is a convex portion formed on the.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989084302U JPH0750851Y2 (en) | 1989-07-18 | 1989-07-18 | Flywheel magnet rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989084302U JPH0750851Y2 (en) | 1989-07-18 | 1989-07-18 | Flywheel magnet rotor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0326252U JPH0326252U (en) | 1991-03-18 |
| JPH0750851Y2 true JPH0750851Y2 (en) | 1995-11-15 |
Family
ID=31632677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989084302U Expired - Lifetime JPH0750851Y2 (en) | 1989-07-18 | 1989-07-18 | Flywheel magnet rotor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0750851Y2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59204455A (en) * | 1983-05-09 | 1984-11-19 | Moriyama Kogyo Kk | Ignition signal generator of internal combustion engine |
-
1989
- 1989-07-18 JP JP1989084302U patent/JPH0750851Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0326252U (en) | 1991-03-18 |
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