JP2003130147A - Planetary gear device - Google Patents
Planetary gear deviceInfo
- Publication number
- JP2003130147A JP2003130147A JP2001332586A JP2001332586A JP2003130147A JP 2003130147 A JP2003130147 A JP 2003130147A JP 2001332586 A JP2001332586 A JP 2001332586A JP 2001332586 A JP2001332586 A JP 2001332586A JP 2003130147 A JP2003130147 A JP 2003130147A
- Authority
- JP
- Japan
- Prior art keywords
- gear
- teeth
- tooth
- internal gear
- planetary gear
- 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.)
- Pending
Links
- 238000003754 machining Methods 0.000 abstract description 4
- 238000000465 moulding Methods 0.000 description 19
- 230000004323 axial length Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 2
- 230000008961 swelling Effects 0.000 description 1
Landscapes
- Retarders (AREA)
- Gears, Cams (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、自動車、工作機等
の回転部を増速あるいは減速させる遊星歯車装置に関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a planetary gear device that accelerates or decelerates rotating parts of automobiles, machine tools and the like.
【０００２】[0002]
【従来の技術】従来の遊星歯車装置として、内歯ギヤ
は、その歯を歯厚が軸方向全長に亘って等しくなる等厚
歯とし、該内歯ギヤに噛み合う遊星ギヤは、その歯を歯
厚が軸方向両端から軸方向中心部に行くに従って次第に
厚くなるクラウニング歯としたものがあった。2. Description of the Related Art As a conventional planetary gear device, an internal gear has teeth of equal thickness such that the tooth thickness is equal over the entire axial length, and a planet gear that meshes with the internal gear has teeth. There was a crowning tooth whose thickness gradually increased from both ends in the axial direction toward the central portion in the axial direction.
【０００３】[0003]
【発明が解決しようとする課題】一般に、遊星歯車装置
は、内歯ギヤ、太陽ギヤ、遊星ギヤからなる三種類のギ
ヤが互いに相対回転可能に噛み合うようになっているた
め、僅かな加工精度の狂い、あるいは組付け精度の狂い
が生じても騒音を発生したり、振動を発生したりするこ
とになる。従来は、内歯ギヤの歯の歯厚が軸方向全長に
亘って等厚となっていたため、上記加工精度及び組付け
精度の狂いに対して補正の機能がなく、高度の加工精度
及び組付け精度が要求され、生産性が低下するものであ
った。本発明は、加工精度及び組付け精度の狂いに対し
て補正の機能を有する新規な遊星歯車装置を得ることを
目的とする。Generally, in a planetary gear device, three types of gears, which are an internal gear, a sun gear, and a planetary gear, are engaged with each other so that they can rotate relative to each other. Even if it goes wrong or the assembly accuracy goes wrong, noise or vibration will be generated. In the past, since the tooth thickness of the internal gear was uniform over the entire length in the axial direction, there was no correction function for the deviation of the above-mentioned processing accuracy and assembly accuracy. Precision was required and productivity was reduced. It is an object of the present invention to obtain a new planetary gear device having a function of correcting a deviation in processing accuracy and assembly accuracy.
【０００４】[0004]
【課題を解決するための手段】本発明は、上記目的を達
成するために以下の如く構成したものである。即ち、請
求項１に係る発明は、内歯ギヤの軸心部に太陽ギヤを同
軸に配置し、両者間に遊星ギヤを配置するとともに、該
遊星ギヤを前記内歯ギヤと太陽ギヤとに噛み合わせてな
る遊星歯車装置において、前記内歯ギヤ、太陽ギヤ、遊
星ギヤのうち、少なくとも内歯ギヤの歯を歯厚が軸方向
両端から軸方向中心部に行くに従って次第に厚くなるク
ラウニング歯にしたものである。請求項２に係る発明
は、前記内歯ギヤ、太陽ギヤ、遊星ギヤのそれぞれの歯
を歯厚が軸方向両端から軸方向中心部に行くに従って次
第に厚くなるクラウニング歯にしたものである。請求項
３に係る発明は、前記内歯ギヤ、太陽ギヤ、遊星ギヤの
それぞれの歯を軸線に対して傾斜させるとともに、歯厚
が軸方向両端から軸方向中心部に行くに従って次第に厚
くなるクラウニングヘリカル歯にしたものである。The present invention is configured as follows to achieve the above object. That is, in the invention according to claim 1, the sun gear is coaxially arranged in the axial center portion of the internal gear, the planetary gear is arranged between the two, and the planetary gear is meshed with the internal gear and the sun gear. In a combined planetary gear device, among the internal gears, the sun gears, and the planet gears, at least the teeth of the internal gear are crowning teeth whose thickness gradually increases from the axial ends toward the axial center. Is. According to a second aspect of the present invention, each tooth of the internal gear, the sun gear, and the planetary gear is a crowning tooth whose tooth thickness gradually increases from both axial ends toward an axial central portion. According to a third aspect of the present invention, the teeth of the internal gear, the sun gear, and the planetary gear are inclined with respect to the axis, and the tooth thickness gradually increases from both axial ends toward the axial center. It is a tooth.
【０００５】[0005]
【発明の実施の形態】以下本発明の実施の形態を図面に
基いて説明する。図面において、図１は本発明の実施例
を示す遊星歯車装置の部分正面図、図２は図１に記載さ
れた内歯ギヤの部分拡大斜視図、図３は本発明の内歯ギ
ヤを成型する金型装置の説明用断面図、図４は図３の要
部拡大断面図、図５は予備成型された一次内歯ギヤの部
分拡大斜視図である。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. In the drawings, FIG. 1 is a partial front view of a planetary gear device showing an embodiment of the present invention, FIG. 2 is a partially enlarged perspective view of an internal gear shown in FIG. 1, and FIG. 4 is an enlarged sectional view of an essential part of FIG. 3 and FIG. 5 is a partially enlarged perspective view of a preformed primary internal gear.
【０００６】図１において、１は遊星歯車装置であり、
リング状の内歯ギヤ２の軸心部に太陽ギヤ３を同軸に嵌
合させ、各内歯ギヤ２と太陽ギヤ３との間に３個の遊星
ギヤ４を等間隔で配置するとともに、該遊星ギヤ４を上
記内歯ギヤ２と太陽ギヤ３とに噛み合わせる。５は各遊
星ギヤ４を互いに連結する遊星キャリヤである。上記各
ギヤ２，３，４の歯２ａ，３ａ，４ａは、それぞれ軸心
線に対して所定角度で傾斜するヘリカル歯となってい
る。In FIG. 1, 1 is a planetary gear device,
The sun gear 3 is coaxially fitted to the axial center of the ring-shaped internal gear 2, two planet gears 4 are arranged at equal intervals between each internal gear 2 and the sun gear 3, and The planet gear 4 is meshed with the internal gear 2 and the sun gear 3. A planet carrier 5 connects the planet gears 4 to each other. The teeth 2a, 3a, 4a of each of the gears 2, 3, 4 are helical teeth inclined at a predetermined angle with respect to the axis.
【０００７】上記内歯ギヤ２の歯２ａは、図２に示すよ
うに、歯厚Ｔ１が軸方向両端から軸方向中心部に行くに
従って次第に厚くなるクラウニング歯（クラウニングヘ
リカル歯）に形成する。本例では軸方向中心部の片面の
膨らみ量Ｓが約１０μｍとなるようにする。また、上記
太陽ギヤ３の歯３ａ及び各遊星ギヤ４の歯４ａも歯厚が
軸方向両端から軸方向中心部に行くに従って次第に厚く
なるクラウニング歯（クラウニングヘリカル歯）に形成
する。As shown in FIG. 2, the tooth 2a of the internal gear 2 is formed as a crowning tooth (crowning helical tooth) whose tooth thickness T1 gradually increases from both axial ends toward the axial center. In this example, the swelling amount S on one surface of the central portion in the axial direction is set to about 10 μm. The teeth 3a of the sun gear 3 and the teeth 4a of each planetary gear 4 are also formed as crowning teeth (crowning helical teeth) whose tooth thickness gradually increases from both axial ends toward the axial center.
【０００８】上記内歯ギヤ２は図３，図４に示す金型装
置１０により形成される。図３において、１０は内歯ギ
ヤ２の歯２ａをクラウニング歯（クラウニングヘリカル
歯）に形成する金型装置であり、以下の如くなってい
る。即ち、下部プレート１１の軸心部に円柱状のマンド
レル１２を回転可能に載置し、該下部プレート１１の外
周部に敷金１５、中間プレート１６を介して環状のコレ
ット１７を回転可能に載置し、該コレット１７と上記マ
ンドレル１２との間に一次内歯ギヤ２−１が嵌合する環
状の成型空間（符号省略）を形成する。上記マンドレル
１２は上下に分割された上部マンドレル１２ａと下部マ
ンドレル１２ｂとを芯金１３により同軸に連結して下部
プレート１１に回転可能に載置され、上部マンドレル１
２ａの下部外周にクラウニング成型歯（クラウニングヘ
リカル成型歯）１４を円周方向に所定ピッチで形成す
る。The internal gear 2 is formed by the mold device 10 shown in FIGS. In FIG. 3, reference numeral 10 denotes a mold device for forming the teeth 2a of the internal gear 2 into crowning teeth (crowning helical teeth), which is as follows. That is, a cylindrical mandrel 12 is rotatably mounted on the axial center of the lower plate 11, and an annular collet 17 is rotatably mounted on the outer peripheral portion of the lower plate 11 via a deposit 15 and an intermediate plate 16. Then, an annular molding space (reference numeral omitted) in which the primary internal gear 2-1 is fitted is formed between the collet 17 and the mandrel 12. The mandrel 12 is rotatably mounted on the lower plate 11 by coaxially connecting an upper mandrel 12a and a lower mandrel 12b, which are divided into upper and lower parts, with a cored bar 13,
Crowning molding teeth (crowning helical molding teeth) 14 are formed at a predetermined pitch in the circumferential direction on the lower outer periphery of 2a.
【０００９】上記クラウニング成型歯１４は、一次内歯
ギヤ２−１の歯（ヘリカル歯）２ａ−１をクラウニング
歯に成型するもので、マンドレル１２の軸心線に対して
所定角度で傾斜するとともに、軸方向中心部の歯厚が軸
方向両端部の歯厚よりも薄くなるクラウニングヘリカル
成型歯とする。上記一次内歯ギヤ２−１は、図５に示す
ように、リング状の主体の内周に歯厚Ｔ２が軸方向全長
に亘って等厚となる歯（ヘリカル歯）２ａ−１を所定ピ
ッチで有する。この一次内歯ギヤ２−１は押出し成型
機、あるいは歯切り盤により形成される。なお、上記ク
ラウニング成型歯１４は、一次内歯ギヤ２−１の歯２ａ
−１が軸方向に平行する平歯の場合は、これと対応して
軸方向に平行するとともに、軸方向中心部の歯厚が軸方
向両端部の歯厚よりも薄くなる平歯のクラウニング成型
歯とする。The crowning molding tooth 14 is for molding the tooth (helical tooth) 2a-1 of the primary internal gear 2-1 into a crowning tooth, and is inclined at a predetermined angle with respect to the axis of the mandrel 12. The crowning helical molding tooth is such that the tooth thickness at the central portion in the axial direction is thinner than the tooth thickness at both end portions in the axial direction. As shown in FIG. 5, the primary internal gear 2-1 has a predetermined pitch of teeth (helical teeth) 2a-1 on the inner circumference of a ring-shaped main body, the tooth thickness T2 of which is equal over the entire axial length. Have in. The primary internal gear 2-1 is formed by an extrusion molding machine or a gear cutting machine. The crowning molding teeth 14 are the teeth 2a of the primary internal gear 2-1.
If -1 is a spur tooth that is parallel to the axial direction, the spline tooth crowning that corresponds to this and is parallel to the axial direction, and the tooth thickness at the axial center is thinner than the tooth thickness at both ends in the axial direction. Tooth.
【００１０】上記コレット１７は、その外周面を下方が
大径となる円錐面１７ａとし、該コレット１７の外周面
に環状のコレット押え１８を摺動可能にテーパー嵌合さ
せる。このコレット押え１８は上部プレート２０に嵌合
固定したコンテナ１９に上下摺動可能に嵌合させる。２
１は上記コレット押え１８の上方への過移動を規制する
規制プレートである。上記中間プレート１６と下部マン
ドレル１２ｂとの間隙部に円筒状のカウンタパンチ２２
を上下動可能に嵌合させ、その下端を下部プレート１１
に載置する。該カウンタパンチ２２の上部は成型空間内
の下部側に嵌合し、該成型空間内に嵌合した一次内歯ギ
ヤ２−１の下面を支持して該一次内歯ギヤ２−１がクラ
ウニング成型歯１４と対面する如く位置決めする。２３
は上記カウンタパンチ３４を上方に移動させるノックア
ウトピンであり、クラウニング成型歯１４により成型さ
れた成型品、即ち内歯ギヤ（クラウニングヘリカル内歯
ギヤ）２を上記成型空間から上方に押し出すためのもの
である。The outer peripheral surface of the collet 17 is a conical surface 17a having a large diameter downward, and an annular collet retainer 18 is slidably taper fitted to the outer peripheral surface of the collet 17. The collet retainer 18 is vertically slidably fitted in a container 19 fitted and fixed to the upper plate 20. Two
Reference numeral 1 is a regulation plate that regulates the upward movement of the collet retainer 18. A cylindrical counter punch 22 is provided in the gap between the intermediate plate 16 and the lower mandrel 12b.
Are fitted so that they can move up and down, and the lower end of the lower plate 11
Place on. The upper part of the counter punch 22 is fitted to the lower part in the molding space, and the lower surface of the primary internal gear 2-1 fitted in the molding space is supported to support the primary internal gear 2-1 by crowning. Position it so that it faces the tooth 14. 23
Is a knockout pin for moving the counter punch 34 upward, and is for pushing out a molded product molded by the crowning molding teeth 14, that is, the internal gear (crowning helical internal gear) 2 from the molding space. is there.
【００１１】上記コレット１７及びマンドレル１２の上
方に円筒状の第１パンチ２５及び第２パンチ２６を配置
する。これら第１、第２パンチ２５，２６は単独で上下
動され、第１パンチ２５は下動時にその下端で上記コレ
ット押え１８を所定量下方に移動させ、第２パンチ２６
は下動時にその下端で成型空間内に嵌合した一次内歯ギ
ヤ２−１の上面を押圧する。成型する際には、先ず第２
パンチ２６が下動してその下端で成型空間内の一次内歯
ギヤ２−１の上面を押圧し、次いで第１パンチ２５が下
動してその下端で上記コレット押え１８を所定量下方に
移動させる。さすれば、図３の左半部で示すように、上
記コレット押え１８がそのテーパー面を介して前述した
コレット１７を軸心方向に弾性変形させ、これに伴って
成型空間内に嵌合した一次内歯ギヤ２−１を軸心方向に
弾性変形させる。A cylindrical first punch 25 and a second punch 26 are arranged above the collet 17 and the mandrel 12. The first and second punches 25 and 26 are independently moved up and down, and when the first punch 25 is moved downward, the collet presser 18 is moved downward by a predetermined amount at the lower end thereof, and the second punch 26 is moved.
Presses the upper surface of the primary internal gear 2-1 fitted in the molding space at its lower end during downward movement. When molding, first
The punch 26 moves downward to press the upper surface of the primary internal gear 2-1 in the molding space at its lower end, and then the first punch 25 moves downward to move the collet presser 18 downward by a predetermined amount at its lower end. Let Then, as shown in the left half of FIG. 3, the collet retainer 18 elastically deforms the above-described collet 17 in the axial direction through its tapered surface, and accordingly, the collet 17 is fitted into the molding space. The primary internal gear 2-1 is elastically deformed in the axial direction.
【００１２】これにより、上記一次内歯ギヤ２−１の歯
（ヘリカル歯）２ａ−１がクラウニング成型歯１４に押
し付けられて塑性変形され、図２に示すように、軸方向
中心部の歯厚が軸方向両端部の歯厚よりも厚くなるクラ
ウニング歯（クラウニングヘリカル歯）２ａを有する内
歯ギヤ２が形成されることになる。また、上記第１パン
チ２５が上方に移動されると、図４の仮想線で示すよう
に、上記コレット１７及びクラウニング歯に成型された
内歯ギヤ２が大径に弾性復帰し、該内歯ギヤ２を金型装
置１０から外部に容易に離脱させることができる。As a result, the tooth (helical tooth) 2a-1 of the primary internal gear 2-1 is pressed against the crowning molding tooth 14 and plastically deformed, and as shown in FIG. Thus, the internal gear 2 having the crowning teeth (crowning helical teeth) 2a whose thickness becomes thicker than the tooth thickness at both ends in the axial direction is formed. When the first punch 25 is moved upward, the collet 17 and the internal gear 2 molded into the crowning teeth elastically return to a large diameter as shown by the phantom line in FIG. The gear 2 can be easily disengaged from the mold device 10 to the outside.
【００１３】前述した太陽ギヤ３の歯３ａ及び各遊星ギ
ヤ４の歯４ａは、以下の如くしてクラウニングヘリカル
歯にする。即ち、押出し成型機、あるいは歯切り盤によ
り、外周の歯をヘリカル歯にするとともに、歯厚が軸方
向全長に亘って等厚となる一次太陽ギヤ及び各一次遊星
ギヤ（いずれも図示省略）を形成し、これらをシェービ
ング加工してそれぞれの歯を、歯厚が軸方向両端から軸
方向中心部に行くに従って次第に厚くなるクラウニング
ヘリカル歯３ａ，４ａに形成する。The teeth 3a of the sun gear 3 and the teeth 4a of each planetary gear 4 described above are crowning helical teeth as follows. That is, by using an extrusion molding machine or a gear cutting machine, the outer teeth are helical teeth, and the primary sun gear and each primary planetary gear (both are not shown) that have a uniform tooth thickness over the entire axial length are provided. Then, these teeth are shaving processed to form respective teeth into crowning helical teeth 3a and 4a whose tooth thickness gradually increases from both axial ends toward the axial center.
【００１４】[0014]
【発明の効果】以上の説明から明らかな如く、請求項１
に係る発明は、遊星歯車装置の内歯ギヤ、太陽ギヤ、遊
星ギヤのうち、少なくとも内歯ギヤの歯を歯厚が軸方向
両端から軸方向中心部に行くに従って次第に厚くなるク
ラウニング歯にしたので、遊星ギヤの加工精度、あるい
は内歯ギヤ及び遊星ギヤの組付け精度が若干低下して
も、両者の噛み合い状態が上記クラウニング歯部で補正
されて該両者の歯当たりが安定することになる。このた
め、加工精度及び組付け精度の自由度が大きくなり、生
産性が高くなる。また、請求項２に係る発明は、内歯ギ
ヤ、太陽ギヤ、遊星ギヤのそれぞれの歯をクラウニング
歯にしたので、各ギヤの加工精度及び組付け精度の自由
度がより大きくなり、生産性がより高くなる。請求項３
に係る発明は、内歯ギヤ、太陽ギヤ、遊星ギヤのそれぞ
れの歯を軸線に対して傾斜させるとともに、歯厚が軸方
向両端から軸方向中心部に行くに従って次第に厚くなる
クラウニングヘリカル歯にしたので、各ギヤの加工精度
及び組付け精度の自由度が大きくなって生産性が高くな
るとともに、噛み合い音が静粛になって振動が低減する
ことになる。As is apparent from the above description, claim 1
The invention according to claim, among the internal gear, the sun gear, and the planetary gear of the planetary gear device, at least the teeth of the internal gear are crowning teeth whose tooth thickness gradually increases from the axial ends toward the axial center. Even if the machining accuracy of the planetary gear or the assembling accuracy of the internal gear and the planetary gear is slightly reduced, the meshing state of the two is corrected by the crowning tooth portion, and the tooth contact between the two is stabilized. Therefore, the degree of freedom in processing accuracy and assembly accuracy is increased, and productivity is increased. Further, in the invention according to claim 2, since each tooth of the internal gear, the sun gear, and the planetary gear is a crowning tooth, the degree of freedom in machining accuracy and assembly accuracy of each gear is increased, and productivity is improved. Get higher. Claim 3
According to the invention of claim 1, the teeth of the internal gear, the sun gear, and the planetary gear are inclined with respect to the axis, and the crowning helical tooth has a tooth thickness that gradually increases from both axial ends toward the axial center. The degree of freedom in machining accuracy and assembling accuracy of each gear is increased to improve productivity, and the meshing noise is reduced to reduce vibration.
【図１】本発明の実施例を示す遊星歯車装置の部分正面
図である。FIG. 1 is a partial front view of a planetary gear device showing an embodiment of the present invention.
【図２】図１に記載された内歯ギヤの部分拡大斜視図で
ある。FIG. 2 is a partially enlarged perspective view of the internal gear shown in FIG.
【図３】本発明の内歯ギヤを成型する金型装置の説明用
断面図である。FIG. 3 is a sectional view for explaining a mold device for molding an internal gear according to the present invention.
【図４】図３の要部拡大断面図である。FIG. 4 is an enlarged sectional view of a main part of FIG.
【図５】予備成型された一次内歯ギヤの部分拡大斜視図
である。FIG. 5 is a partially enlarged perspective view of a preformed primary internal gear.
１ 遊星歯車装置
２ 内歯ギヤ
２ａ 歯（クラウニングヘリカル歯）
２−１ 一次内歯ギヤ
２ａ−１ 歯（ヘリカル歯）
３ 太陽ギヤ
３ａ 歯（クラウニングヘリカル歯）
４ 遊星ギヤ
４ａ 歯（クラウニングヘリカル歯）
５ 遊星キャリヤ
１０ 内歯ギヤの金型装置
１１ 下部プレート
１２ マンドレル
１２ａ 上部マンドレル
１２ｂ 下部マンドレル
１３ 芯金
１４ クラウニング成型歯（クラウニングヘリカル成
型歯）
１５ 敷金
１６ 中間プレート
１７ コレット
１７ａ 円錐面
１８ コレット押え
１９ コンテナ
２０ 上部プレート
２１ 規制プレート
２２ カウンタパンチ
２３ ノックアウトピン
２５ 第１パンチ
２６ 第２パンチ1 planetary gear device 2 internal gear 2a tooth (crowning helical tooth) 2-1 primary internal gear 2a-1 tooth (helical tooth) 3 sun gear 3a tooth (crowning helical tooth) 4 planetary gear 4a tooth (crowning helical tooth) 5 Planet carrier 10 Internal gear mold device 11 Lower plate 12 Mandrel 12a Upper mandrel 12b Lower mandrel 13 Core bar 14 Crowning molding tooth (crowning helical molding tooth) 15 Deposit 16 Intermediate plate 17 Collet 17a Conical surface 18 Collet retainer 19 Container 20 Upper Plate 21 Control Plate 22 Counter Punch 23 Knockout Pin 25 First Punch 26 Second Punch
───────────────────────────────────────────────────── フロントページの続き (72)発明者 小山 祥一 静岡県湖西市鷲津2418番地 株式会社フジ ユニバンス内 (72)発明者 佐藤 芳典 静岡県湖西市鷲津2418番地 株式会社フジ ユニバンス内 Ｆターム(参考） 3J027 FA12 FA17 FB02 FC01 GA01 GC14 GE11 3J030 AA08 AC03 BA04 BA05 BB06 BC06 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Shoichi Koyama Fuji Co., Ltd. 2418 Washizu, Kosai City, Shizuoka Prefecture In Univance (72) Inventor Yoshinori Sato Fuji Co., Ltd. 2418 Washizu, Kosai City, Shizuoka Prefecture In Univance F term (reference) 3J027 FA12 FA17 FB02 FC01 GA01 GC14 GE11 3J030 AA08 AC03 BA04 BA05 BB06 BC06
Claims (3)
を同軸に配置し、両者間に遊星ギヤ（４）を配置すると
ともに、該遊星ギヤ（４）を前記内歯ギヤ（２）と太陽
ギヤ（３）とに噛み合わせてなる遊星歯車装置におい
て、前記内歯ギヤ（２）、太陽ギヤ（３）、遊星ギヤ
（４）のうち、少なくとも内歯ギヤ（２）の歯（２ａ）
を歯厚が軸方向両端から軸方向中心部に行くに従って次
第に厚くなるクラウニング歯にしたことを特徴とする遊
星歯車装置。1. A sun gear (3) at the center of the internal gear (2).
Is arranged coaxially, a planetary gear (4) is arranged between the two, and the planetary gear (4) is meshed with the internal gear (2) and the sun gear (3). Of the internal gear (2), the sun gear (3) and the planetary gear (4), at least the teeth (2a) of the internal gear (2).
Is a crowning tooth whose tooth thickness gradually increases from both ends in the axial direction toward the central portion in the axial direction.
ヤ（４）のそれぞれの歯（２ａ，３ａ，４ａ）を歯厚が
軸方向両端から軸方向中心部に行くに従って次第に厚く
なるクラウニング歯にしたことを特徴とする請求項１記
載の遊星歯車装置。2. The teeth (2a, 3a, 4a) of the internal gear (2), the sun gear (3), and the planetary gear (4) gradually move from the axial ends toward the axial center. The planetary gear device according to claim 1, wherein the crowning teeth are thickened.
ヤ（４）のそれぞれの歯（２ａ，３ａ，４ａ）を軸線に
対して傾斜させるとともに、歯厚が軸方向両端から軸方
向中心部に行くに従って次第に厚くなるクラウニングヘ
リカル歯にしたことを特徴とする請求項１記載の遊星歯
車装置。3. The teeth (2a, 3a, 4a) of the internal gear (2), the sun gear (3) and the planetary gear (4) are inclined with respect to the axis, and the tooth thickness is from both ends in the axial direction. 2. The planetary gear device according to claim 1, wherein the crowning helical teeth are thicker toward the center in the axial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001332586A JP2003130147A (en) | 2001-10-30 | 2001-10-30 | Planetary gear device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001332586A JP2003130147A (en) | 2001-10-30 | 2001-10-30 | Planetary gear device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003130147A true JP2003130147A (en) | 2003-05-08 |
Family
ID=19147978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001332586A Pending JP2003130147A (en) | 2001-10-30 | 2001-10-30 | Planetary gear device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003130147A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006207764A (en) * | 2005-01-31 | 2006-08-10 | Hitachi Ltd | Electric disc brake |
| KR100892512B1 (en) | 2007-10-31 | 2009-04-10 | 현대자동차주식회사 | Gear tooth structure of hub bore entering manual transmission gear shaft |
-
2001
- 2001-10-30 JP JP2001332586A patent/JP2003130147A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006207764A (en) * | 2005-01-31 | 2006-08-10 | Hitachi Ltd | Electric disc brake |
| KR100892512B1 (en) | 2007-10-31 | 2009-04-10 | 현대자동차주식회사 | Gear tooth structure of hub bore entering manual transmission gear shaft |
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