JP2007177861A - Gear - Google Patents

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JP2007177861A
JP2007177861A JP2005375920A JP2005375920A JP2007177861A JP 2007177861 A JP2007177861 A JP 2007177861A JP 2005375920 A JP2005375920 A JP 2005375920A JP 2005375920 A JP2005375920 A JP 2005375920A JP 2007177861 A JP2007177861 A JP 2007177861A
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gear
peripheral surface
outer peripheral
teeth
external force
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JP4725727B2 (en
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Yoichi Takeuchi
洋一 竹内
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Enplas Corp
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Enplas Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To easily assemble a gear device having a plurality of chevron-shaped gear teeth combined with each other without increasing the number of parts. <P>SOLUTION: In this gear G<SB>1</SB>, the plurality of chevron-shaped gear teeth 2 are formed in the outer peripheral surface, and a rotating motion is transmitted between two shafts by the meshing of these gear teeth 2. The portion of the gear device between the teeth forming part of the outer peripheral surface and the rotating shaft is so formed as to be elastically deformed in the direction of the arrow A by the action of an external force shown by the arrow F in the radial direction so that the teeth forming part of the outer peripheral surface can be moved in the acting direction of the external force on the rotating shaft. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、外周面に山形の複数の歯が形成され、その歯の噛み合いによって２軸間に回転運動を伝達する歯車に関し、詳しくは、山形の複数の歯を噛み合わせた歯車装置の組み立てを部品点数を増やすことなく、且つ作業工程を複雑にすることなく容易に行なえるようにする歯車に係るものである。   The present invention relates to a gear having a plurality of chevron-shaped teeth formed on the outer peripheral surface and transmitting rotational motion between two axes by meshing the teeth, and more specifically, assembling a gear device that meshes a plurality of chevron-shaped teeth. The present invention relates to a gear that can be easily performed without increasing the number of parts and without complicating the work process.

従来、この種の歯車で特にやまば歯車（ダブルヘリカルギヤ）は、互いに向きが反対となる一対のはすば歯車を同軸に組み合わせた形となっており、高速でも振動、騒音が少なく、円滑な回転運動をし、軸方向のスラストを生じない特徴を有するものである。   Conventionally, this type of gear, especially helical gears, are a combination of a pair of helical gears whose directions are opposite to each other and are coaxially combined. It has a feature that it rotates and does not generate axial thrust.

しかし、このようなやまば歯車を複数個用いて各歯車の歯が互いに噛み合った状態の歯車装置に組み立てる場合には、装置本体の側壁から一方向に平行に立てられた複数の回転軸に対して単純に装着するだけでは互いに相手側の歯と噛み合わせることができず歯車装置として組み立てることができなかった。   However, when using a plurality of such spur gears to assemble a gear device in which the teeth of the gears mesh with each other, a plurality of rotating shafts standing in parallel in one direction from the side wall of the device body are used. Simply attaching them makes it impossible to mate with the mating teeth of each other, making it impossible to assemble the gear device.

そこで、このような問題に対処する方向として、一方の第１のダブルヘリカルギヤを、２つのヘルカルギヤに分割することで組み立てを行なう方法が提案されている（例えば、特許文献１参照）。   Therefore, as a direction to deal with such a problem, a method of assembling by dividing one first double helical gear into two helical gears has been proposed (for example, see Patent Document 1).

この場合、この歯車装置の組み立ては、先ず、アイドラシャフトに第１のヘリカルギヤを取り付け、次に第１のダブルヘリカルギヤと第２のダブルヘリカルギヤとをそれぞれ装着して各ダブルヘリカルギヤの一方側の斜歯と第１のヘリカルギヤとを噛み合わせ、その後、アイドラシャフトに第２のヘリカルギヤを取り付けて第１及び第２のダブルヘリカルギヤの他方側の斜歯と第２のヘリカルギヤとを噛み合わせて行なわれる。これにより、ダブルヘリカルギヤ（やまば歯車）を別々に組み立てることができるようになっている。
特開平０８−２８４６７７号公報（図４〜６） In this case, the gear device is assembled by first attaching the first helical gear to the idler shaft, then mounting the first double helical gear and the second double helical gear, respectively, and the inclined teeth on one side of each double helical gear. And the first helical gear are engaged with each other, and then the second helical gear is attached to the idler shaft and the oblique teeth on the other side of the first and second double helical gears are engaged with the second helical gear. As a result, the double helical gear can be assembled separately.
Japanese Patent Laid-Open No. 08-284777 (FIGS. 4 to 6)

しかし、従来の歯車装置においては、ダブルヘリカルのアイドラギヤを歯幅方向の中央部で分割して第１及び第２のヘリカルギヤとし、この第１及び第２のヘリカルギヤを別々にダブルヘリカルギヤの一方側の斜歯と他方側の斜歯とに噛み合わせるようにしているので、部品点数が増えるという問題があり、部品管理が煩雑となるおそれがあった。また、組み立て作業としても工数が増えて複雑になるという問題もあった。   However, in the conventional gear device, the double helical idler gear is divided at the center in the tooth width direction to form the first and second helical gears, and the first and second helical gears are separately provided on one side of the double helical gear. Since the oblique teeth and the oblique teeth on the other side are engaged, there is a problem that the number of parts increases, and there is a possibility that the parts management becomes complicated. Also, the assembly work has a problem that the number of man-hours increases and becomes complicated.

そこで、本発明は、このような問題点に対処し、山形の複数の歯を噛み合わせた歯車装置の組み立てを部品点数を増やすことなく、且つ作業工程を複雑にすることなく容易に行なえるようにする歯車を提供することを目的とする。   Therefore, the present invention addresses such problems, and can easily assemble a gear device in which a plurality of chevron teeth are engaged without increasing the number of parts and without complicating the work process. It aims at providing the gear which makes it.

上記目的を達成するために、本発明による歯車は、外周面に山形の複数の歯が形成され、その歯の噛み合いによって２軸間に回転運動を伝達する歯車であって、前記外周面の歯形成部と回転軸との間の部分が半径方向の外力の作用により弾性変形する形状に形成され、前記外周面の歯形成部を前記回転軸に対して前記外力の作用方向に移動可能としたものである。   In order to achieve the above object, a gear according to the present invention has a plurality of chevron-shaped teeth formed on an outer peripheral surface thereof, and transmits a rotational motion between two shafts by meshing of the teeth. A portion between the forming portion and the rotating shaft is formed into a shape that is elastically deformed by the action of an external force in the radial direction, and the tooth forming portion on the outer peripheral surface is movable in the acting direction of the external force with respect to the rotating shaft. Is.

このような構成により、半径方向に外力を作用して外周面に形成された山形の複数の歯の歯形成部と回転軸との間の部分を弾性変形させ、外周面の歯形成部を回転軸に対して外力の作用方向に移動させて組み立て時に山形の複数の歯の噛み合いを可能にする。   With such a configuration, an external force is applied in the radial direction to elastically deform a portion between the tooth forming portions of the chevron-shaped teeth formed on the outer peripheral surface and the rotation shaft, thereby rotating the tooth forming portion on the outer peripheral surface. By moving the shaft in the direction of the external force, it is possible to engage a plurality of chevron teeth during assembly.

また、前記外周面の歯形成部と回転軸との間の部分は、半径方向にてある一定方向にのみ弾性変形する形状に形成されものである。これにより、半径方向にてある一定方向に弾性変形するように形成された外周面の歯形成部と回転軸との間の部分を、同方向の外力の作用で弾性変形させ、外周面の歯形成部を回転軸に対して外力の作用方向に移動させる。   The portion of the outer peripheral surface between the tooth forming portion and the rotating shaft is formed in a shape that is elastically deformed only in a certain direction in the radial direction. As a result, the portion between the tooth forming portion of the outer peripheral surface formed so as to be elastically deformed in a certain direction in the radial direction and the rotating shaft is elastically deformed by the action of the external force in the same direction, and the teeth on the outer peripheral surface are The forming portion is moved in the direction of the external force with respect to the rotation axis.

そして、前記外周面の歯形成部と回転軸との間の部分は、半径方向にてあらゆる方向に弾性変形する形状に形成されたものである。これにより、半径方向にてあらゆる方向に弾性変形するように形成された外周面の歯形成部と回転軸との間の部分を、半径方向の外力の作用で弾性変形させ、外周面の歯形成部を回転軸に対して外力の作用方向に移動させる。   And the part between the tooth | gear formation part of the said outer peripheral surface and a rotating shaft is formed in the shape which elastically deforms in all directions in a radial direction. As a result, a portion between the tooth forming portion of the outer peripheral surface formed so as to be elastically deformed in all directions in the radial direction and the rotating shaft is elastically deformed by the action of an external force in the radial direction, thereby forming a tooth on the outer peripheral surface. The part is moved in the direction of the external force with respect to the rotation axis.

請求項１に係る発明によれば、外周面の歯形成部を回転軸に対して外力の作用方向に移動させることができる。したがって、複数の歯車を組み合わせて歯車装置に組み立てる場合に、本発明の歯車を指でつまんで半径方向にずらせば、相手歯車の歯との間に隙間を作ることができ、各歯車を別々に装置本体に装着することができる。この場合、装着後、本発明の歯車から指を離せば外周面の歯形成部と回転軸との間の部分の弾性復元力によって、本発明の歯車は元の位置に戻り、山形の歯を相手歯車の歯に噛み合わせることができる。これにより、山形の歯を噛み合わせた歯車装置の組み立てを部品点数を増やすことなく容易に行なうことができる。   According to the invention which concerns on Claim 1, the tooth | gear formation part of an outer peripheral surface can be moved to the action direction of external force with respect to a rotating shaft. Therefore, when assembling a gear device by combining a plurality of gears, if the gear of the present invention is pinched with a finger and shifted in the radial direction, a gap can be created between the teeth of the counterpart gear, and each gear can be separated separately. It can be attached to the device body. In this case, when the finger is removed from the gear of the present invention after mounting, the gear of the present invention returns to the original position by the elastic restoring force of the portion between the tooth forming portion on the outer peripheral surface and the rotating shaft, and the chevron teeth are removed. Can mesh with the teeth of the mating gear. As a result, the assembly of the gear device in which the chevron teeth are engaged can be easily performed without increasing the number of parts.

また、請求項２に係る発明によれば、例えば、外周面の歯形成部と回転軸との間の部分の弾性変形方向を外力の作用方向と一致させれば、外周面の歯形成部を回転軸に対して外力の作用方向に移動させることができる。したがって、山形の歯を噛み合わせた歯車装置の組み立てを容易に行なうことができる。   Further, according to the invention according to claim 2, for example, if the elastic deformation direction of the portion between the tooth forming portion on the outer peripheral surface and the rotation shaft is made coincident with the acting direction of the external force, the tooth forming portion on the outer peripheral surface is changed. It can be moved in the direction of the external force with respect to the rotation axis. Therefore, it is possible to easily assemble the gear device in which the chevron teeth are engaged.

そして、請求項３に係る発明によれば、外周面の歯形成部と回転軸との間の部分の弾性変形方向を特定して外力の作用方向と一致させる必要がないので、歯車装置の組み立てがより容易になる。   According to the third aspect of the invention, it is not necessary to specify the elastic deformation direction of the portion between the tooth forming portion on the outer peripheral surface and the rotating shaft so as to coincide with the acting direction of the external force. Becomes easier.

以下、本発明の実施形態を添付図面に基づいて詳細に説明する。図１は本発明による歯車の第１の実施形態を示す正面図である。この歯車Ｇ1は、山形の複数の歯の噛み合いによって２軸間に回転運動を伝達するもので、やまば歯車と呼ばれ、ウェブ１と、歯２と、軸穴３と、弾性変形部４とからなり、樹脂、金属等により形成されている。 Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a front view showing a first embodiment of a gear according to the present invention. This gear G 1 transmits rotational motion between two shafts by meshing a plurality of chevron teeth, and is called a helical gear, and is a web 1, a tooth 2, a shaft hole 3, and an elastic deformation portion 4. And is made of resin, metal or the like.

ウェブ１は、円板状に形成された部材である。
ウェブ１の外周には、複数の歯２が形成されている。この歯２は、図示省略の相手歯車の歯と噛み合って回転運動を伝達するもので、例えば図２に示すように山形に形成されている。 The web 1 is a member formed in a disk shape.
A plurality of teeth 2 are formed on the outer periphery of the web 1. This tooth 2 meshes with a tooth of a not-shown counterpart gear to transmit rotational motion, and is formed in a mountain shape, for example, as shown in FIG.

ウェブ１の中心部には、軸穴３が形成されている。この軸穴３は、回転軸を通す部分であり、例えばその内面に歯みぞを形成して回転軸の外周面に形成したスプラインと噛み合わせてウェブ１を回転軸に固着し、平行な２軸間に回転運動を伝達できるようになっている。   A shaft hole 3 is formed at the center of the web 1. The shaft hole 3 is a portion through which the rotating shaft passes. For example, a tooth groove is formed on the inner surface of the shaft hole 3 and meshed with a spline formed on the outer peripheral surface of the rotating shaft to fix the web 1 to the rotating shaft. Rotational motion can be transmitted between them.

外周面の歯形成部と回転軸との間のウェブ１の部分には、弾性変形部４が設けられている。この弾性変形部４は、半径方向の外力の作用により弾性変形する形状に形成されており、外力を受けて外周面の歯形成部を回転軸に対して図１に矢印Ｆで示す外力の作用方向に移動させるものであり、外周面の歯形成部と軸穴３との間のウェブ１に軸穴３の内周面に沿って形成された切欠部５と、この切欠部５と軸穴３との間の薄肉部６とで構成され、切欠部５の一方の端部にこの切欠部５と軸穴３とを結ぶスリット７を形成して薄肉部６が矢印Ａ方向へたわみ易くなっている。   An elastic deformation portion 4 is provided in a portion of the web 1 between the tooth forming portion on the outer peripheral surface and the rotation shaft. The elastically deforming portion 4 is formed in a shape that is elastically deformed by the action of an external force in the radial direction, and receives the external force to cause the tooth forming portion on the outer peripheral surface to act on the rotation axis by the external force indicated by an arrow F in FIG. A notch portion 5 formed along the inner peripheral surface of the shaft hole 3 in the web 1 between the tooth forming portion of the outer peripheral surface and the shaft hole 3, and the notch portion 5 and the shaft hole. 3, and a slit 7 that connects the notch 5 and the shaft hole 3 is formed at one end of the notch 5 so that the thin part 6 is easily bent in the direction of arrow A. ing.

次に、このように構成された本発明の歯車Ｇ1を用いて歯車装置に組み立てる手順を、図３〜図５を参照して説明する。なお、図３〜図５において、歯車Ｇ1及び相手歯車Ｇ2の歯２，１２は、図面が煩雑となるため簡略化して示している。
先ず、図３に示すように、第１段階として歯車装置本体８の側壁９から平行に立てられた複数の回転軸、例えば図３においては、２本の回転軸１０，１１のうち一方の回転軸１０に相手歯車Ｇ2を装着して所定位置に固着する。 Next, a procedure for assembling a gear device using the gear G 1 of the present invention configured as described above will be described with reference to FIGS. 3 to 5, the teeth 2 and 12 of the gear G 1 and the counterpart gear G 2 are shown in a simplified manner because the drawings are complicated.
First, as shown in FIG. 3, as a first stage, a plurality of rotating shafts standing in parallel from the side wall 9 of the gear device body 8, for example, in FIG. 3, one of the two rotating shafts 10 and 11 is rotated. A mating gear G 2 is attached to the shaft 10 and fixed in place.

次に、第２段階として他方の回転軸１１に本発明の歯車Ｇ1を、弾性変形部４を相手歯車Ｇ2の回転軸１０側に位置させて装着する。その際、図４（ａ）に示すように、歯車Ｇ1を例えば、指でつまんで同図に矢印Ｆで示す方向（外力の作用方向）に引っ張る。これにより、歯車Ｇ1に設けられた弾性変形部４の薄肉部６が矢印Ａ方向に弾性変形して歯車Ｇ1が回転軸１１に対して矢印Ａと反対の矢印Ｆ方向にずれることになる。その結果、相手歯車Ｇ2の歯１２と歯車Ｇ1の歯２との間に隙間ｄが生じ、同図（ｂ）に示すように相手歯車Ｇ2の歯１２に邪魔されることなく歯車Ｇ1を相手歯車Ｇ2と同じ位置まで矢印Ｂ方向に挿入することができる。 Next, as the second stage, the gear G 1 of the present invention is mounted on the other rotating shaft 11 with the elastic deformation portion 4 positioned on the rotating shaft 10 side of the counterpart gear G 2 . At this time, as shown in FIG. 4 (a), pull the gear G 1 example, the direction (direction of action of the external force) indicated by arrow F in FIG pinching with fingers. This will lead to the thin portion 6 of the elastic deformation portion 4 provided on the gear G 1 is elastically deformed in the direction of arrow A gear G 1 deviates in the opposite direction of arrow F and the arrow A with respect to the axis of rotation 11 . As a result, a gap d is generated between the tooth 12 of the counter gear G 2 and the tooth 2 of the gear G 1 , and the gear G is not obstructed by the teeth 12 of the counter gear G 2 as shown in FIG. 1 to the same position as the mating gear G 2 can be inserted in the arrow B direction.

その後、第３段階として歯車Ｇ1から指を離せば、歯車Ｇ1は、図５に示すように弾性変形部４の薄肉部６の矢印Ｃ方向への弾性復元力によって矢印Ｄ方向に移動して元の位置まで戻る。これにより、歯車Ｇ1と相手歯車Ｇ2との歯２，１２が噛み合うこととなり、歯車Ｇ1の装着が完了する。 Thereafter, when the finger is released from the gear G 1 as the third stage, the gear G 1 is moved in the direction of arrow D by the elastic restoring force in the direction of arrow C of the thin portion 6 of the elastic deformation portion 4 as shown in FIG. To return to the original position. As a result, the teeth 2 and 12 of the gear G 1 and the counterpart gear G 2 mesh with each other, and the mounting of the gear G 1 is completed.

なお、三個以上の歯車の組み立ても上述と同様にして、複数の回転軸に対して別々に装着して行なうことができる。   In addition, the assembly of three or more gears can be carried out by separately attaching to a plurality of rotating shafts in the same manner as described above.

図６は、弾性変形部４の一変形例を示す正面図である。この弾性変形部４は、複数の歯２と軸穴３との間のウェブ１に軸穴３の内周面３ａに沿って一つ形成された切欠部５と軸穴３との間の薄肉部６を、その真ん中に形成したスリット７で二つに分離した構造を有するものである。これにより、弾性変形部４が外力Ｆの作用方向と反対の矢印Ａ方向にたわみ易くなっている。   FIG. 6 is a front view showing a modification of the elastic deformation portion 4. The elastically deforming portion 4 has a thin wall between the notch 5 and the shaft hole 3 formed on the web 1 between the plurality of teeth 2 and the shaft hole 3 along the inner peripheral surface 3 a of the shaft hole 3. The portion 6 has a structure separated into two by a slit 7 formed in the middle thereof. Thereby, the elastic deformation part 4 becomes easy to bend in the arrow A direction opposite to the acting direction of the external force F.

図７は、弾性変形部４の他の変形例を示す正面図である。この弾性変形部４は、複数の歯２と軸穴３との間のウェブ１に軸穴３の内周面３ａに沿って二つの切欠部５，５を円周方向に並べて形成し、この二つの切欠部５，５と軸穴３との間の各薄肉部６，６にて、互いに一番遠くに離れて位置する端部側には、各切欠部５，５と軸穴３とをつなぐスリット７，７を形成し、各薄肉部６，６にて隣接した端部間には、軸穴３の側壁３ａにその中心軸に沿って所定深さの溝１３を形成した構造を有するものである。これにより、弾性変形部４が外力Ｆの作用方向と反対の矢印Ａ方向にたわみ易くなっている。   FIG. 7 is a front view showing another modification of the elastic deformation portion 4. This elastic deformation portion 4 is formed by arranging two notches 5 and 5 in the circumferential direction along the inner peripheral surface 3a of the shaft hole 3 in the web 1 between the plurality of teeth 2 and the shaft hole 3. In each thin portion 6, 6 between the two notches 5, 5 and the shaft hole 3, each notch 5, 5 and the shaft hole 3 Is formed between the adjacent end portions of the thin-walled portions 6 and 6, and a groove 13 having a predetermined depth is formed on the side wall 3a of the shaft hole 3 along the central axis. It is what you have. Thereby, the elastic deformation part 4 becomes easy to bend in the arrow A direction opposite to the acting direction of the external force F.

図８は、弾性変形部４の更に他の変形例を示す正面図である。この弾性変形部４は、切欠部５の円周方向の両端側方にて軸穴３の内周面３ａに、その中心軸に沿って所定深さの溝１３，１３を形成した構造を有するものである。これにより、弾性変形部４が外力Ｆの作用方向と反対の矢印Ａ方向にたわみ易くなっている。   FIG. 8 is a front view showing still another modification of the elastic deformation portion 4. The elastically deformable portion 4 has a structure in which grooves 13 and 13 having a predetermined depth are formed along the central axis on the inner peripheral surface 3a of the shaft hole 3 on both sides in the circumferential direction of the notch portion 5. Is. Thereby, the elastic deformation part 4 becomes easy to bend in the arrow A direction opposite to the acting direction of the external force F.

図９は、本発明による歯車Ｇ1の第２の実施形態を示す正面図である。この第２の実施形態の歯車Ｇ1は、外周面の歯形成部と回転軸との間の部分が半径方向にてあらゆる方向に弾性変形する形状に形成されたものである。その具体的構成例は、回転軸を固着する軸穴３が形成されたボス１５と、ボス１５を中心部に保持する放射状に延びた複数のアーム１６とを備えたものである。そして、アーム１６は、回転方向に屈曲した形状に形成されて例えば矢印Ｆ1で示す外力の作用方向と反対の矢印Ａ1方向、又は矢印Ｆ2で示す外力の作用方向と反対の矢印Ａ2方向にたわみ易くなっており、回転軸の軸方向へはたわみ難くなっている。 FIG. 9 is a front view showing a second embodiment of the gear G 1 according to the present invention. Gear G 1 of the second embodiment is that the portion between the tooth forming portions of the outer peripheral surface and the rotation axis is formed in a shape that elastically deformed in every direction in the radial direction. A specific configuration example includes a boss 15 in which a shaft hole 3 for fixing a rotation shaft is formed, and a plurality of radially extending arms 16 that hold the boss 15 at the center. Then, the arm 16, the arrow A 1 direction acting direction opposite of being formed bent in the direction of rotation shape for example an external force shown by the arrow F 1, or opposite to the direction of action of the external force indicated by the arrow F 2 arrow A 2 It is easy to bend in the direction, and it is difficult to bend in the axial direction of the rotating shaft.

なお、以上の説明においては、ウェブ１の中心部に軸穴３を形成した場合について説明したが、これに限られず、ウェブ１の中心部にウェブ１と一体的に回転軸を設けたものであってもよい。   In addition, in the above description, although the case where the shaft hole 3 was formed in the center part of the web 1 was demonstrated, it is not restricted to this, The rotation axis was integrally provided with the web 1 in the center part of the web 1. There may be.

本発明による歯車の第１の実施形態を示す正面図である。It is a front view which shows 1st Embodiment of the gearwheel by this invention. 本発明の歯車の歯形を示す斜視図である。It is a perspective view which shows the tooth profile of the gear of this invention. 本発明の歯車を用いて歯車装置に組み立てる手順の第１段階を示す説明図である。It is explanatory drawing which shows the 1st step of the procedure assembled to a gear apparatus using the gear of this invention. 本発明の歯車を用いて歯車装置に組み立てる手順の第２段階を示す説明図である。It is explanatory drawing which shows the 2nd step of the procedure assembled to a gear apparatus using the gear of this invention. 本発明の歯車を用いて歯車装置に組み立てる手順の第３段階を示す説明図である。It is explanatory drawing which shows the 3rd step of the procedure assembled to a gear apparatus using the gear of this invention. 本発明の歯車の弾性変形部の一変形例を示す正面図である。It is a front view which shows one modification of the elastic deformation part of the gear of this invention. 本発明の歯車の弾性変形部の他の変形例を示す正面図である。It is a front view which shows the other modification of the elastic deformation part of the gear of this invention. 本発明の歯車の弾性変形部の更に他の変形例を示す正面図である。It is a front view which shows another modification of the elastic deformation part of the gear of this invention. 本発明による歯車の第２の実施形態を示す正面図である。It is a front view which shows 2nd Embodiment of the gearwheel by this invention.

符号の説明Explanation of symbols

Ｇ1…歯車
Ｇ2…相手歯車
Ｆ，Ｆ1，Ｆ2…外力の作用方向
Ａ，Ａ1，Ａ2…弾性変形方向
１…ウェブ
２…歯車の歯
３…軸穴
３ａ…軸穴の内周面
４，１４…弾性変形部
５…切欠部
６…薄肉部
７…スリット
１０…一方の回転軸
１１…他方の回転軸
１２…相手歯車の歯
１３…溝
１５…ボス
１６…アーム G 1 ... Gear G 2 ... Counter gear F, F 1 , F 2 ... Direction of action of external force A, A 1 , A 2 ... Elastic deformation direction 1 ... Web 2 ... Gear teeth 3 ... Shaft hole 3a ... Inside shaft hole Peripheral surfaces 4, 14 ... Elastic deformation part 5 ... Notch part 6 ... Thin part 7 ... Slit 10 ... One rotating shaft 11 ... The other rotating shaft 12 ... Opposite gear teeth 13 ... Groove 15 ... Boss 16 ... Arm

Claims (3)

外周面に山形の複数の歯が形成され、その歯の噛み合いによって２軸間に回転運動を伝達する歯車であって、
前記外周面の歯形成部と回転軸との間の部分が半径方向の外力の作用により弾性変形する形状に形成され、前記外周面の歯形成部を前記回転軸に対して前記外力の作用方向に移動可能としたことを特徴とする歯車。 A gear having a plurality of chevron-shaped teeth formed on the outer peripheral surface and transmitting rotational movement between the two axes by meshing the teeth,
A portion between the tooth forming portion of the outer peripheral surface and the rotating shaft is formed into a shape that is elastically deformed by the action of an external force in the radial direction, and the direction of action of the external force on the outer peripheral surface of the tooth forming portion with respect to the rotating shaft. A gear that is movable. 前記外周面の歯形成部と回転軸との間の部分は、半径方向にてある一定方向にのみ弾性変形する形状に形成されたことを特徴とする請求項１記載の歯車。   The gear according to claim 1, wherein a portion between the tooth forming portion and the rotation shaft of the outer peripheral surface is formed in a shape that is elastically deformed only in a certain direction in the radial direction. 前記外周面の歯形成部と回転軸との間の部分は、半径方向にてあらゆる方向に弾性変形する形状に形成されたことを特徴とする請求項１記載の歯車。   2. The gear according to claim 1, wherein a portion between the tooth forming portion of the outer peripheral surface and the rotating shaft is formed in a shape that is elastically deformed in all directions in the radial direction.
JP2005375920A 2005-12-27 2005-12-27 gear Active JP4725727B2 (en)

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CN104373548A (en) * 2013-08-16 2015-02-25 德昌电机(深圳)有限公司 Gear

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61148954A (en) * 1984-12-24 1986-07-07 Canon Inc Picture reading mechanism
JPS6235145A (en) * 1985-08-06 1987-02-16 Nissan Motor Co Ltd Device for controlling down shift timing and engine brake of automatic speed change gear
JPS62103238A (en) * 1985-07-31 1987-05-13 ブネス　マレル Tipper for load-carrying platform
JPH0368663A (en) * 1989-08-07 1991-03-25 Chisso Corp Flame-retardant composition
JPH08284677A (en) * 1995-04-17 1996-10-29 Mitsubishi Motors Corp Structure of gear train and its installing method
JPH10272077A (en) * 1997-03-31 1998-10-13 Aisin Seiki Co Ltd Automatically opening and closing device for seat and seat cover toilet bowl
JP2000240761A (en) * 1999-02-18 2000-09-05 Enplas Corp Gear
JP2003194964A (en) * 2001-12-26 2003-07-09 Citizen Watch Co Ltd Wheel for timepiece having slip mechanism and manufacturing method thereof
JP2004278794A (en) * 2003-03-12 2004-10-07 Pierre Kunz Sa Movable component for contact with other movable or fixed member

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61148954A (en) * 1984-12-24 1986-07-07 Canon Inc Picture reading mechanism
JPS62103238A (en) * 1985-07-31 1987-05-13 ブネス　マレル Tipper for load-carrying platform
JPS6235145A (en) * 1985-08-06 1987-02-16 Nissan Motor Co Ltd Device for controlling down shift timing and engine brake of automatic speed change gear
JPH0368663A (en) * 1989-08-07 1991-03-25 Chisso Corp Flame-retardant composition
JPH08284677A (en) * 1995-04-17 1996-10-29 Mitsubishi Motors Corp Structure of gear train and its installing method
JPH10272077A (en) * 1997-03-31 1998-10-13 Aisin Seiki Co Ltd Automatically opening and closing device for seat and seat cover toilet bowl
JP2000240761A (en) * 1999-02-18 2000-09-05 Enplas Corp Gear
JP2003194964A (en) * 2001-12-26 2003-07-09 Citizen Watch Co Ltd Wheel for timepiece having slip mechanism and manufacturing method thereof
JP2004278794A (en) * 2003-03-12 2004-10-07 Pierre Kunz Sa Movable component for contact with other movable or fixed member

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