JP5179427B2 - Rotation transmission device and manufacturing method thereof - Google Patents

Rotation transmission device and manufacturing method thereof Download PDF

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JP5179427B2
JP5179427B2 JP2009089957A JP2009089957A JP5179427B2 JP 5179427 B2 JP5179427 B2 JP 5179427B2 JP 2009089957 A JP2009089957 A JP 2009089957A JP 2009089957 A JP2009089957 A JP 2009089957A JP 5179427 B2 JP5179427 B2 JP 5179427B2
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damper
rotating body
transmission device
rotation transmission
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友騎 山下
弘晃 本間
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Asmo Co Ltd
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Description

本発明は、ダンパ部材を介して回転力を伝達する回転伝達装置及びその製造方法に関するものである。   The present invention relates to a rotation transmission device that transmits a rotational force via a damper member and a method for manufacturing the rotation transmission device.

従来、パワーウインド装置用等のモータ装置は、回転軸を回転駆動するモータ本体と、回転軸の回転を減速するウォームギヤを有した減速部とを備える。このようなモータ装置としては、ウォームホイール（第１回転体）と該ウォームホイールに対して同軸配置された出力側回転体（第２回転体）との間にダンパ部材が介在され、ウォームホイールから出力側回転体への回転力を、ダンパ部材を介して伝達する回転伝達装置を備えたものがある。   2. Description of the Related Art Conventionally, a motor device for a power window device or the like includes a motor body that rotationally drives a rotating shaft, and a speed reducing portion that includes a worm gear that reduces the rotation of the rotating shaft. As such a motor device, a damper member is interposed between a worm wheel (first rotator) and an output-side rotator (second rotator) arranged coaxially with the worm wheel. Some include a rotation transmission device that transmits a rotational force to the output-side rotator through a damper member.

そして、回転伝達装置としては、第１回転体の内壁に径方向外側に凹設された内壁凹部が周方向に複数形成され、第２回転体の外壁に径方向内側に凹設された外壁凹部が前記内壁凹部とそれぞれ対向するように周方向に複数形成され、内壁凹部に収容されるとともに外壁凹部に収容されるようにダンパ部材）を複数備えた（所謂ナイトハルトゴムばね構造の）ものがある（例えば、特許文献１参照）。   As the rotation transmission device, a plurality of inner wall recesses are formed in the circumferential direction on the inner wall of the first rotating body, and the outer wall recess is provided on the outer wall of the second rotating body in the radially inner side. Are formed in the circumferential direction so as to face the inner wall recesses, and are provided with a plurality of damper members (so-called Knighthard rubber spring structure) so as to be received in the inner wall recesses and in the outer wall recesses. (For example, refer to Patent Document 1).

このような回転伝達装置では、第１回転体から第２回転体への回転力又は第２回転体から第１回転体への回転力がダンパ部材を介して伝達され、衝撃やトルク振動の伝達を低減することができる。   In such a rotation transmission device, the rotational force from the first rotating body to the second rotating body or the rotating force from the second rotating body to the first rotating body is transmitted via the damper member, and transmission of impact and torque vibration is performed. Can be reduced.

特開２００３−２０２０６５号公報JP 2003-202065 A

しかしながら、上記のような回転伝達装置においては、複数のダンパ部材（ゴム材）を１つずつそれぞれ内壁凹部と外壁凹部との間に介在させる必要があることから、それらの組み付け時に各ダンパ部材についてそれぞれ位置決め保持が必要となってしまう。例えば、まず第１回転体の各内壁凹部に対応させてダンパ部材（ゴム材）をそれぞれ配置し、その状態で各ダンパ部材を保持しつつ、各ダンパ部材が外壁凹部と対応（当接）するように第２回転体を組み付けるといった作業が必要となり、その組み付け作業が煩雑であるという問題がある。   However, in the rotation transmission device as described above, it is necessary to interpose a plurality of damper members (rubber materials) one by one between the inner wall concave portion and the outer wall concave portion, respectively. Each of them needs to be positioned and held. For example, first, a damper member (rubber material) is arranged corresponding to each inner wall recess of the first rotating body, and each damper member corresponds (contacts) with the outer wall recess while holding each damper member in that state. Thus, there is a problem that the work of assembling the second rotating body is required, and the assembling work is complicated.

本発明は、上記問題点を解決するためになされたものであって、その目的は、組み付けが容易な回転伝達装置及びその製造方法を提供することにある。   The present invention has been made to solve the above problems, and an object of the present invention is to provide a rotation transmission device that can be easily assembled and a method for manufacturing the rotation transmission device.

上記問題点を解決するために、請求項１に記載の発明では、第１回転体と該第１回転体に対して同軸配置された第２回転体との間にダンパ部材が介在され、前記第１回転体から前記第２回転体への回転力又は前記第２回転体から前記第１回転体への回転力を、前記ダンパ部材を介して伝達する回転伝達装置であって、前記第１回転体には内壁が設けられるとともに、該内壁には径方向外側に凹設された内壁凹部が周方向に複数形成され、前記第２回転体には前記内壁の内側で該内壁と径方向に対向する外壁が設けられるとともに、該外壁には径方向内側に凹設された外壁凹部が前記内壁凹部とそれぞれ対向するように周方向に複数形成され、前記ダンパ部材は、前記内壁凹部に収容されるとともに前記外壁凹部に収容されるように配設されるダンパ部と、配設される前の状態において複数の前記ダンパ部を略直線状に連結する弾性連結部とを有し、各前記ダンパ部が各前記内壁凹部に収容されるように前記ダンパ部材が略Ｃ字形状に曲げられて前記第１回転体に組み付けられた状態で、湾曲された前記弾性連結部の復元力により前記ダンパ部が前記内壁凹部に押し付けられるようにし、前記第１及び前記第２回転体は、組み付けられた状態で前記ダンパ部と対応した位置で軸方向に対向する第１及び第２対向面を有し、前記ダンパ部は、前記第１及び前記第２回転体に組み付けられる前の状態において前記内壁凹部と前記外壁凹部との間隔より小さく設定され、組み付けられた状態で前記第１及び第２対向面に潰されることで前記内壁凹部と前記外壁凹部とに当接されたことを要旨とする。 In order to solve the above problem, in the invention according to claim 1, a damper member is interposed between the first rotating body and the second rotating body arranged coaxially with respect to the first rotating body, A rotation transmission device that transmits a rotational force from a first rotating body to the second rotating body or a rotating force from the second rotating body to the first rotating body via the damper member, The rotating body is provided with an inner wall, and the inner wall is formed with a plurality of inner wall recesses that are recessed radially outward, and the second rotating body is radially inward of the inner wall with respect to the inner wall. Opposing outer walls are provided, and a plurality of outer wall recesses recessed radially inward are formed in the outer wall in the circumferential direction so as to face the inner wall recesses, and the damper member is accommodated in the inner wall recess. And disposed so as to be accommodated in the outer wall recess. The damper member includes a damper portion and an elastic connecting portion that connects the plurality of damper portions in a substantially linear shape before being disposed, and the damper member is accommodated in the inner wall recess. Is bent into a substantially C-shape and assembled to the first rotating body, the damper portion is pressed against the inner wall recess by the restoring force of the curved elastic connecting portion, and the first and the The second rotating body has first and second opposing surfaces that are axially opposed at positions corresponding to the damper portion in the assembled state, and the damper portion is disposed on the first and second rotating bodies. It is set to be smaller than the interval between the inner wall recess and the outer wall recess before being assembled, and is brought into contact with the inner wall recess and the outer wall recess by being crushed by the first and second opposing surfaces in the assembled state. gist that it has been To.

同構成によれば、ダンパ部材の弾性連結部は、配設される前の状態において複数のダンパ部を略直線状に連結する。そして、各ダンパ部が各内壁凹部に収容されるようにダンパ部材が略Ｃ字形状に曲げられて第１回転体に組み付けられた状態では、弾性連結部が湾曲され、その湾曲された弾性連結部の復元力によりダンパ部が内壁凹部に押し付けられるため、ダンパ部の位置決め保持が容易となる。よって、例えば、ダンパ部材を第１回転体に組み付けた後、第２回転体を組み付ける工程（作業）が容易となる。   According to this configuration, the elastic connecting portion of the damper member connects the plurality of damper portions in a substantially linear shape before being disposed. Then, in a state where the damper member is bent into a substantially C shape and assembled to the first rotating body so that each damper portion is accommodated in each inner wall recess, the elastic connecting portion is curved, and the curved elastic connection Since the damper portion is pressed against the inner wall recess by the restoring force of the portion, the positioning and holding of the damper portion is facilitated. Therefore, for example, after the damper member is assembled to the first rotating body, the process (work) of assembling the second rotating body is facilitated.

同構成によれば、ダンパ部は、第１及び第２回転体に組み付けられる前の状態において内壁凹部と外壁凹部との間隔より小さく設定されるため、第２回転体をダンパ部材が組み付けられた第１回転体に軸方向から組み付ける際に、第１及び第２対向面に潰されるまでは、ダンパ部と外壁凹部との間に隙間を設けることができる。よって、ダンパ部が削られたり擦れたりすることを低減しながら、スムーズな組み付けが可能となる。しかも、組み付けられた状態ではダンパ部は第１及び第２対向面に潰されることで内壁凹部と外壁凹部とに当接されるため、第１回転体と第２回転体とが互いにがたついてしまうことはない。   According to the same configuration, the damper portion is set to be smaller than the interval between the inner wall concave portion and the outer wall concave portion in the state before being assembled to the first and second rotary bodies, and thus the damper member is assembled to the second rotary body. When the first rotating body is assembled from the axial direction, a gap can be provided between the damper portion and the outer wall recess until the first rotating body is crushed by the first and second opposing surfaces. Therefore, it is possible to perform smooth assembly while reducing the amount of scraping and rubbing of the damper portion. In addition, in the assembled state, the damper portion is crushed by the first and second opposing surfaces and is brought into contact with the inner wall concave portion and the outer wall concave portion, so that the first rotating body and the second rotating body rattle each other. There is no end.

請求項２に記載の発明では、請求項１に記載の回転伝達装置において、前記ダンパ部は軸方向から見て円形の略円柱状に形成され、その軸方向端部に円錐状の凸部が形成されたことを要旨とする。 In the invention described in claim 2, in the rotation transmission device according to claim 1, wherein the damper unit is viewed from the axial direction is formed in a circular substantially cylindrical shape, the protrusion conical at its axial ends The gist is that it was formed.

同構成によれば、ダンパ部は軸方向から見て円形の略円柱状に形成され、その軸方向端部に円錐状の凸部が形成されるため、第１及び第２対向面に潰される際に、径方向に均等に変形し易く、各ダンパ部同士での形状を略均等とすることができる。詳しくは、例えば第１及び第２対向面が互いに若干傾斜している（平行となっていない）ような場合でも、各ダンパ部は凸部の先端から潰されるため、第１及び第２対向面の近い部分が多く潰されるといったことを回避でき、各ダンパ部同士での形状を略均等とすることができる。しかも、ダンパ部の軸方向端部を円錐状の凸部とすることで、第１及び第２対向面との接触面積を小さくすることができ、第１回転体と第２回転体との相対回動時の摺動抵抗を小さくすることができる。   According to the same configuration, the damper portion is formed in a substantially cylindrical shape that is circular when viewed from the axial direction, and the conical convex portion is formed at the axial end portion thereof, so that the first and second opposing surfaces are crushed. At this time, it is easy to deform evenly in the radial direction, and the shapes of the respective damper portions can be made substantially uniform. Specifically, for example, even when the first and second opposing surfaces are slightly inclined (not parallel to each other), each damper portion is crushed from the tip of the convex portion, so the first and second opposing surfaces Therefore, it is possible to avoid that many portions close to each other are crushed, and the shapes of the damper portions can be made substantially uniform. Moreover, by making the axial end portion of the damper portion a conical convex portion, the contact area between the first and second opposing surfaces can be reduced, and the relative relationship between the first rotating body and the second rotating body can be reduced. The sliding resistance during rotation can be reduced.

請求項３に記載の発明では、請求項１又は２に記載の回転伝達装置において、前記弾性連結部は、軸方向から見た幅が径方向から見た幅より小さいことを要旨とする。 According to a third aspect of the present invention, in the rotation transmission device according to the first or second aspect , the elastic connecting portion is characterized in that the width viewed from the axial direction is smaller than the width viewed from the radial direction.

同構成によれば、前記弾性連結部は、軸方向から見た幅が径方向から見た幅より小さいため、ダンパ部材が略Ｃ字形状に曲げられる際に、軸直交方向以外に弾性変形し難く（捩れ難く）、第１回転体への組み付けが容易となる。又、勿論、捩れず組み付けられることで、ダンパ部が内壁凹部に良好に押し付けられることになる。   According to this configuration, the elastic connecting portion has a width viewed from the axial direction smaller than a width viewed from the radial direction. Therefore, when the damper member is bent into a substantially C shape, the elastic connecting portion is elastically deformed in directions other than the orthogonal direction. It is difficult (not easily twisted), and can be easily assembled to the first rotating body. Of course, by assembling without twisting, the damper portion is pressed well against the inner wall recess.

請求項４に記載の発明では、請求項１乃至３のいずれか１項に記載の回転伝達装置において、前記ダンパ部材は、前記ダンパ部と前記弾性連結部とが一体成形されてなることを要旨とする。 According to a fourth aspect of the present invention, in the rotation transmission device according to any one of the first to third aspects, the damper member is formed by integrally forming the damper portion and the elastic connecting portion. And

同構成によれば、ダンパ部材は、ダンパ部と弾性連結部とが一体成形されてなるため、その成形が容易となる。又、ダンパ部材は、全体が略直線状であるため、例えば、一対の金型にて容易に多数個を同時に成形することができる。   According to this configuration, since the damper member is formed by integrally forming the damper portion and the elastic coupling portion, the molding thereof is facilitated. Further, since the entire damper member is substantially linear, for example, a large number of damper members can be easily formed simultaneously with a pair of molds.

請求項５に記載の発明では、第１回転体と該第１回転体に対して同軸配置された第２回転体との間にダンパ部材が介在され、前記第１回転体から前記第２回転体への回転力又は前記第２回転体から前記第１回転体への回転力を、前記ダンパ部材を介して伝達する回転伝達装置の製造方法であって、前記第１回転体には内壁が設けられるとともに、該内壁には径方向外側に凹設された内壁凹部が周方向に複数形成されたものであり、前記第２回転体には前記内壁の内側で該内壁と径方向に対向する外壁が設けられるとともに、該外壁には径方向内側に凹設された外壁凹部が前記内壁凹部とそれぞれ対向するように周方向に複数形成されたものであり、前記ダンパ部材は、前記内壁凹部に収容されるとともに前記外壁凹部に収容されるように配設されるダンパ部と、配設される前の状態において複数の前記ダンパ部を略直線状に連結する弾性連結部とを有するものであり、各前記ダンパ部が各前記内壁凹部に収容されるように前記ダンパ部材を略Ｃ字形状に曲げて前記第１回転体に組み付けて、湾曲された前記弾性連結部の復元力により前記ダンパ部を前記内壁凹部に押し付けるダンパ部材組み付け工程と、前記ダンパ部材組み付け工程の後、前記ダンパ部が各前記外壁凹部に収容されるように前記第２回転体を前記ダンパ部材が組み付けられた前記第１回転体に軸方向から組み付ける第２回転体組み付け工程とを備え、前記第１及び前記第２回転体は、組み付けられた状態で前記ダンパ部と対応した位置で軸方向に対向する第１及び第２対向面を有するものであり、前記ダンパ部は、前記第１及び前記第２回転体に組み付けられる前の状態において前記内壁凹部と前記外壁凹部との間隔より小さく設定されるものであり、前記第２回転体組み付け工程では、前記第１及び第２対向面にて前記ダンパ部を潰すことで該ダンパ部を前記内壁凹部と前記外壁凹部とに当接させたことを要旨とする。 In a fifth aspect of the present invention, a damper member is interposed between the first rotating body and the second rotating body arranged coaxially with respect to the first rotating body, and the second rotation from the first rotating body. A method of manufacturing a rotation transmitting device for transmitting a rotational force to a body or a rotational force from the second rotating body to the first rotating body via the damper member, wherein the first rotating body has an inner wall. And a plurality of inner wall recesses formed radially outwardly on the inner wall are formed in the circumferential direction, and the second rotating body faces the inner wall radially inward of the inner wall. The outer wall is provided with a plurality of outer wall recesses formed radially inwardly in the outer wall so as to face the inner wall recesses, respectively, and the damper member is formed in the inner wall recess. Arranged to be accommodated in the outer wall recess And a plurality of the damper portions connected in a substantially straight line in a state before being disposed, so that each of the damper portions is accommodated in each of the inner wall recesses. A damper member assembling step of bending the damper member into a substantially C shape and assembling the first rotating body, and pressing the damper portion against the inner wall recess by a restoring force of the curved elastic connecting portion; and assembling the damper member And a second rotating body assembling step of assembling the second rotating body from the axial direction to the first rotating body to which the damper member is assembled so that the damper portion is accommodated in each outer wall recess. The first and second rotating bodies have first and second opposing surfaces that face each other in the axial direction at a position corresponding to the damper portion in an assembled state, and the damper portion includes: In the state before being assembled to the first and second rotating bodies, it is set smaller than the interval between the inner wall recess and the outer wall recess, and in the second rotating body assembling step, the first and second The gist of the invention is that the damper portion is brought into contact with the inner wall concave portion and the outer wall concave portion by crushing the damper portion on the opposing surface .

同発明によれば、ダンパ部材組み付け工程にて、各ダンパ部が各内壁凹部に収容されるようにダンパ部材が略Ｃ字形状に曲げられて第１回転体に組み付けられて、湾曲された弾性連結部の復元力によりダンパ部が内壁凹部に押し付けられるため、ダンパ部の位置決め保持が容易となる。よって、その後の第２回転体組み付け工程、即ち、ダンパ部が各外壁凹部に収容されるように第２回転体をダンパ部材が組み付けられた第１回転体に軸方向から組み付ける工程が容易となる。   According to the invention, in the damper member assembling step, the damper member is bent into a substantially C shape so that each damper portion is accommodated in each inner wall recess, and is assembled to the first rotating body to be curved elastic. Since the damper portion is pressed against the inner wall recess by the restoring force of the connecting portion, the positioning and holding of the damper portion becomes easy. Therefore, the subsequent second rotating body assembling step, that is, the step of assembling the second rotating body from the axial direction to the first rotating body on which the damper member is assembled so that the damper portion is accommodated in each outer wall recess is facilitated. .

同発明によれば、ダンパ部は、第１及び第２回転体に組み付けられる前の状態において内壁凹部と外壁凹部との間隔より小さく設定されるものであるため、第２回転体組み付け工程の際に、第１及び第２対向面に潰されるまでは、ダンパ部と外壁凹部との間に隙間を設けることができる。よって、ダンパ部が削られたり擦れたりすることを低減しながら、第２回転体組み付け工程をスムーズに行うことができる。しかも、組み付けられた状態ではダンパ部は第１及び第２対向面に潰されることで内壁凹部と外壁凹部とに当接されるため、第１回転体と第２回転体とが互いにがたついてしまうことはない。   According to the invention, the damper portion is set to be smaller than the interval between the inner wall concave portion and the outer wall concave portion in the state before being assembled to the first and second rotary bodies. In addition, a gap can be provided between the damper portion and the outer wall recess until the first and second opposing surfaces are crushed. Therefore, the second rotating body assembling step can be performed smoothly while reducing the amount of scraping or rubbing the damper portion. In addition, in the assembled state, the damper portion is crushed by the first and second opposing surfaces and is brought into contact with the inner wall concave portion and the outer wall concave portion, so that the first rotating body and the second rotating body rattle each other. There is no end.

請求項６に記載の発明では、請求項５に記載の回転伝達装置の製造方法において、前記ダンパ部は軸方向から見て円形の略円柱状に形成され、その軸方向端部に円錐状の凸部が形成されたものであることを要旨とする。 According to a sixth aspect of the present invention, in the method of manufacturing the rotation transmission device according to the fifth aspect , the damper portion is formed in a substantially circular column shape when viewed from the axial direction, and has a conical shape at an axial end portion thereof. The gist is that a convex portion is formed.

同発明によれば、ダンパ部は軸方向から見て円形の略円柱状に形成され、その軸方向端部に円錐状の凸部が形成されるものであるため、第２回転体組み付け工程にて第１及び第２対向面に潰される際に、径方向に均等に変形し易く、各ダンパ部同士での形状を略均等とすることができる。詳しくは、例えば第１及び第２対向面が互いに若干傾斜している（平行となっていない）ような場合でも、各ダンパ部は凸部の先端から潰されるため、第１及び第２対向面の近い部分が多く潰されるといったことを回避でき、各ダンパ部同士での形状を略均等とすることができる。しかも、ダンパ部の軸方向端部を円錐状の凸部とすることで、第１及び第２対向面との接触面積を小さくすることができ、第１回転体と第２回転体との相対回動時の摺動抵抗を小さくすることができる。   According to the present invention, the damper portion is formed in a substantially circular cylindrical shape when viewed from the axial direction, and the conical convex portion is formed at the axial end portion thereof, so that the second rotating body assembling step is performed. Thus, when being crushed by the first and second opposing surfaces, it is easy to deform uniformly in the radial direction, and the shapes of the respective damper portions can be made substantially uniform. Specifically, for example, even when the first and second opposing surfaces are slightly inclined (not parallel to each other), each damper portion is crushed from the tip of the convex portion, so the first and second opposing surfaces Therefore, it is possible to avoid that many portions close to each other are crushed, and the shapes of the damper portions can be made substantially uniform. Moreover, by making the axial end portion of the damper portion a conical convex portion, the contact area between the first and second opposing surfaces can be reduced, and the relative relationship between the first rotating body and the second rotating body can be reduced. The sliding resistance during rotation can be reduced.

請求項７に記載の発明では、請求項５又は６に記載の回転伝達装置の製造方法において、前記弾性連結部は、軸方向から見た幅が径方向から見た幅より小さいものであることを要旨とする。 According to a seventh aspect of the present invention, in the method for manufacturing a rotation transmission device according to the fifth or sixth aspect , the width of the elastic connecting portion viewed from the axial direction is smaller than the width viewed from the radial direction. Is the gist.

同発明によれば、前記弾性連結部は、軸方向から見た幅が径方向から見た幅より小さいものであるため、ダンパ部材組み付け工程にてダンパ部材が略Ｃ字形状に曲げられる際に、軸直交方向以外に弾性変形し難く（捩れ難く）、第１回転体への組み付けが容易となる。又、勿論、捩れず組み付けられることで、ダンパ部が内壁凹部に良好に押し付けられることになる。   According to the invention, since the elastic connecting portion has a width viewed from the axial direction smaller than a width viewed from the radial direction, when the damper member is bent into a substantially C shape in the damper member assembling step. Further, it is difficult to elastically deform (difficult to twist) in directions other than the direction perpendicular to the axis, and the assembly to the first rotating body is facilitated. Of course, by assembling without twisting, the damper portion is pressed well against the inner wall recess.

請求項８に記載の発明では、請求項５乃至７のいずれか１項に記載の回転伝達装置の製造方法において、前記ダンパ部材を構成する前記ダンパ部と前記弾性連結部とを一体成形するダンパ成形工程を備えたことを要旨とする。 According to an eighth aspect of the present invention, in the method for manufacturing a rotation transmission device according to any one of the fifth to seventh aspects, the damper portion and the elastic coupling portion that constitute the damper member are integrally molded. The gist is that a molding step is provided.

同発明によれば、ダンパ成形工程にてダンパ部材を構成するダンパ部と弾性連結部とを一体成形するため、その成形が容易となる。又、ダンパ部材は、全体が略直線状であるため、例えば、一対の金型にて容易に多数個を同時に成形することができる。   According to the present invention, the damper part and the elastic connecting part that constitute the damper member are integrally formed in the damper molding step, so that the molding becomes easy. Further, since the entire damper member is substantially linear, for example, a large number of damper members can be easily formed simultaneously with a pair of molds.

本発明によれば、組み付けが容易な回転伝達装置及びその製造方法を提供することができる。   ADVANTAGE OF THE INVENTION According to this invention, the rotation transmission apparatus with easy assembly | attachment and its manufacturing method can be provided.

本実施の形態におけるモータ装置の要部分解斜視図。The principal part disassembled perspective view of the motor apparatus in this Embodiment. 本実施の形態のウォームホイールにダンパ部材を組み付けた状態の平面図。The top view of the state which assembled | attached the damper member to the worm wheel of this Embodiment. （ａ）本実施の形態におけるダンパ部材及び金型を軸方向から見た模式図。（ｂ）同じくダンパ部材を径方向から見た模式図。(A) The schematic diagram which looked at the damper member and metal mold | die in this Embodiment from the axial direction. (B) The schematic diagram which looked at the damper member from radial direction similarly. 本実施の形態における回転伝達装置の一部断面図。The partial cross section figure of the rotation transmission apparatus in this Embodiment. 本実施の形態のダンパ部が潰される前の状態を説明するための一部断面図。The partial cross section figure for demonstrating the state before the damper part of this Embodiment is crushed. （ａ）本実施の形態のダンパ部が潰される前の状態を示す断面図。（ｂ）同じくダンパ部が潰された状態を示す断面図。(A) Sectional drawing which shows the state before the damper part of this Embodiment is crushed. (B) Sectional drawing which shows the state where the damper part was crushed similarly. 本実施の形態における回転伝達装置の作用を説明するための一部断面図。The partial cross section figure for demonstrating the effect | action of the rotation transmission apparatus in this Embodiment. （ａ），（ｂ）別例におけるダンパ部材を軸方向から見た模式図。(A), (b) The schematic diagram which looked at the damper member in another example from the axial direction.

以下、本発明をパワーウインド装置用のモータ装置に具体化した一実施形態を図１〜図７に従って説明する。
図１に示すように、モータ装置１は、モータ本体１０と減速部１１とを備えている。モータ本体１０は、図示しない回転軸を備え、該回転軸を回転駆動する。減速部１１は、ハウジング１２、第１回転体としてのウォームホイール１３、ダンパ部材１４、第２回転体としての出力側回転体１５、出力軸１６、及び蓋１７等を備える。 Hereinafter, an embodiment in which the present invention is embodied in a motor device for a power window device will be described with reference to FIGS.
As shown in FIG. 1, the motor device 1 includes a motor main body 10 and a speed reduction unit 11. The motor main body 10 includes a rotating shaft (not shown) and rotationally drives the rotating shaft. The speed reduction part 11 includes a housing 12, a worm wheel 13 as a first rotating body, a damper member 14, an output side rotating body 15 as a second rotating body, an output shaft 16, a lid 17, and the like.

ハウジング１２は、合成樹脂製であって、モータ固定部１２ａ、ウォーム収容部１２ｂ、及びホイール収容部１２ｃを備える。モータ固定部１２ａは、前記モータ本体１０（ヨーク）に固定され、モータ本体１０の軸中心上に形成された前記ウォーム収容部１２ｂには、モータ本体１０の前記回転軸と一体回転する図示しないウォームが収容される。尚、ウォームは、その一部がホイール収容部１２ｃ内に露出することになる。   The housing 12 is made of a synthetic resin and includes a motor fixing portion 12a, a worm accommodating portion 12b, and a wheel accommodating portion 12c. The motor fixing portion 12a is fixed to the motor main body 10 (yoke), and the worm accommodating portion 12b formed on the shaft center of the motor main body 10 has a worm (not shown) that rotates integrally with the rotating shaft of the motor main body 10. Is housed. A part of the worm is exposed in the wheel accommodating portion 12c.

ホイール収容部１２ｃは略有底筒状に形成され、その底板部上面における中央には円筒状の軸支持部１８が立設されている。軸支持部１８には、その軸線方向に延びる軸孔１８ａが形成されている。そして、ホイール収容部１２ｃには、ウォームホイール１３が収容される。   The wheel accommodating portion 12c is formed in a substantially bottomed cylindrical shape, and a cylindrical shaft support portion 18 is erected at the center of the upper surface of the bottom plate portion. A shaft hole 18 a extending in the axial direction is formed in the shaft support portion 18. And the worm wheel 13 is accommodated in the wheel accommodating part 12c.

ウォームホイール１３は、合成樹脂製であって、略有底筒状に形成されている。詳述すると、ウォームホイール１３は、円盤部２０の外周縁から立設された外周壁２１を有し、その外周壁２１の外周面に前記ウォームに噛合される歯部Ｈが形成されている。又、外周壁２１の内周には内壁２２が形成され、該内壁２２には径方向外側に凹設された内壁凹部２３が周方向に複数（本実施の形態では６つ）形成されている。本実施の形態の内壁凹部２３は、図１及び図２に示すように、その深部（径方向外側端部）が円弧状に形成され、その開口側（径方向内側）が開口端（径方向内側端）に向かって幅が広くなる直線状に形成されている。又、本実施の形態の内壁凹部２３は、図２に示すように、周方向に隣り合う同士が略連続して、言い換えると周方向に隣り合う内壁凹部２３の周方向端部同士が近接して形成されている。   The worm wheel 13 is made of a synthetic resin and has a substantially bottomed cylindrical shape. More specifically, the worm wheel 13 has an outer peripheral wall 21 erected from the outer peripheral edge of the disk portion 20, and a tooth portion H to be engaged with the worm is formed on the outer peripheral surface of the outer peripheral wall 21. Further, an inner wall 22 is formed on the inner periphery of the outer peripheral wall 21, and a plurality of inner wall recesses 23 (six in this embodiment) are formed in the inner wall 22 so as to be recessed radially outward. . As shown in FIGS. 1 and 2, the inner wall recess 23 of the present embodiment has a deep portion (radially outer end) formed in an arc shape, and an opening side (radially inner) thereof is an open end (radial direction). It is formed in a linear shape that becomes wider toward the inner end. Further, as shown in FIG. 2, the inner wall recesses 23 of the present embodiment are adjacent to each other in the circumferential direction substantially continuously, in other words, the circumferential end portions of the inner wall recesses 23 adjacent in the circumferential direction are close to each other. Is formed.

又、前記円盤部２０の中央には前記内壁２２（内壁凹部２３）と径方向に対向する円筒状の内周壁２４が外周壁２１と同方向に立設されている。そして、ウォームホイール１３は、その内周壁２４に軸支持部１８が内嵌されて支持されるとともにホイール収容部１２ｃに収容される。尚、このとき、ウォームホイール１３の歯部Ｈは、ホイール収容部１２ｃ内に露出した図示しない前記ウォームに噛合される。   A cylindrical inner peripheral wall 24 diametrically opposed to the inner wall 22 (inner wall recess 23) is erected in the center of the disk portion 20 in the same direction as the outer peripheral wall 21. The worm wheel 13 is supported by the inner peripheral wall 24 with the shaft support portion 18 fitted therein and accommodated in the wheel accommodating portion 12c. At this time, the tooth portion H of the worm wheel 13 is engaged with the worm (not shown) exposed in the wheel housing portion 12c.

ダンパ部材１４は、図３（ａ），（ｂ）に示すように、前記内壁凹部２３（図２参照）に対応した複数（本実施の形態では６つ）のダンパ部２５と、組み付けられる前の状態において複数の前記ダンパ部２５を直線状に連結する弾性連結部２６とからなる。本実施の形態のダンパ部材１４は、ダンパ部２５と弾性連結部２６とがゴム材にて一体成形されてなる。   As shown in FIGS. 3A and 3B, the damper member 14 is assembled with a plurality of (six in this embodiment) damper portions 25 corresponding to the inner wall recesses 23 (see FIG. 2). In this state, the plurality of damper portions 25 are connected to each other in a straight line. The damper member 14 of the present embodiment is formed by integrally forming a damper portion 25 and an elastic connecting portion 26 with a rubber material.

ダンパ部２５は、略円柱状に形成され、その軸方向両端部に円錐状の凸部２５ａ（図３（ｂ）及び図６（ａ）参照）が形成されている。弾性連結部２６は、ダンパ部２５の外周同士を連結し、軸方向から見た（図３（ａ）参照）幅が径方向から見た（図３（ｂ）参照）幅より小さい板状に形成されている。   The damper portion 25 is formed in a substantially cylindrical shape, and conical convex portions 25a (see FIGS. 3B and 6A) are formed at both axial ends thereof. The elastic connecting part 26 connects the outer peripheries of the damper part 25 and has a plate shape whose width is smaller than the width seen from the axial direction (see FIG. 3A) (see FIG. 3B). Is formed.

そして、ダンパ部材１４は、図２に示すように、各ダンパ部２５（その一部）が各内壁凹部２３に収容されるように、全体が略Ｃ字形状に曲げられて前記ウォームホイール１３に組み付けられ、その状態で、湾曲された弾性連結部２６の復元力（直線状に戻ろうとする力）によりダンパ部２５が内壁凹部２３に押し付けられるようにしている。   As shown in FIG. 2, the damper member 14 is entirely bent into a substantially C shape so that each damper portion 25 (a part thereof) is accommodated in each inner wall recess 23. In this state, the damper portion 25 is pressed against the inner wall concave portion 23 by the restoring force of the curved elastic connecting portion 26 (force to return to a straight line).

出力側回転体１５は、合成樹脂製であって、図１及び図４に示すように、円盤部２７（図１参照）と、円盤部２７から立設されてその外周が前記内壁２２の内側で該内壁２２と径方向に対向する外壁２８を構成する立設部２９（図４参照）とを備える。又、外壁２８には径方向内側に凹設された外壁凹部３０が前記内壁凹部２３とそれぞれ対向するように周方向に複数（本実施の形態では６つ）形成されている。本実施の形態の外壁凹部３０は、図４に示すように、その深部（径方向内側端部）が円弧状に形成され、その開口側（径方向外側）が開口端（径方向外側端）に向かって幅が広くなるように形成されている。又、本実施の形態の外壁凹部３０は、図４に示すように、周方向に隣り合う同士が離間して、言い換えると外壁２８の円弧部２８ａを介して形成されている。そして、出力側回転体１５は、ダンパ部２５（その一部）が各外壁凹部３０に収容されるようにダンパ部材１４が組み付けられたウォームホイール１３に軸方向から組み付けられている。即ち、ダンパ部２５は、内壁凹部２３と外壁凹部３０との間であって、（その一部が）内壁凹部２３に収容されるとともに（他の一部が）外壁凹部３０に収容されるように配設されている。   The output side rotator 15 is made of synthetic resin, and as shown in FIGS. 1 and 4, a disk part 27 (see FIG. 1) and an outer periphery of the output side rotator 15 are arranged inside the inner wall 22. And an upright portion 29 (see FIG. 4) that constitutes an outer wall 28 that faces the inner wall 22 in the radial direction. The outer wall 28 is formed with a plurality (six in this embodiment) of outer wall recesses 30 recessed radially inward so as to face the inner wall recesses 23 respectively. As shown in FIG. 4, the outer wall concave portion 30 of the present embodiment has a deep portion (radially inner end portion) formed in an arc shape, and an opening side (radially outer side) thereof is an open end (radial outer end). It is formed so that the width becomes wider toward. Further, as shown in FIG. 4, the outer wall concave portion 30 of the present embodiment is formed through the circular arc portion 28 a of the outer wall 28, which are adjacent to each other in the circumferential direction. And the output side rotary body 15 is assembled | attached from the axial direction to the worm wheel 13 with which the damper member 14 was assembled | attached so that the damper part 25 (the part) might be accommodated in each outer wall recessed part 30. FIG. That is, the damper portion 25 is between the inner wall concave portion 23 and the outer wall concave portion 30 so that (a part thereof) is accommodated in the inner wall concave portion 23 and (the other part) is accommodated in the outer wall concave portion 30. It is arranged.

ここで、ダンパ部２５（その直径）は、ウォームホイール１３及び出力側回転体１５に組み付けられる前の状態において内壁凹部２３と外壁凹部３０との（径方向の）間隔より小さく設定されている。そして、ダンパ部２５は、各部材が組み付けられた状態で、ウォームホイール１３の円盤部２０におけるダンパ部２５と対応した位置の第１対向面２０ａ（図１及び図６参照）及び出力側回転体１５の円盤部２７におけるダンパ部２５と対応した位置の第２対向面２７ａ（図６参照）に軸方向に潰されることで内壁凹部２３と外壁凹部３０とに当接（圧接）されている（図４参照）。即ち、出力側回転体１５をダンパ部材１４が組み付けられたウォームホイール１３に軸方向から組み付ける際に、第１及び第２対向面２０ａ，２７ａに潰されるまでは、図５及び図６（ａ）に示すように、ダンパ部２５と外壁凹部３０との間に隙間Ｓが設けられている。そして、図６（ｂ）に示す位置まで出力側回転体１５が軸方向に組み付けられると、ダンパ部２５は第１及び第２対向面２０ａ，２７ａに潰されることで内壁凹部２３に加えて外壁凹部３０にも当接されることになる（図４及び図６（ｂ）参照）。尚、弾性連結部２６を軸方向から見た（図４及び図５の部分拡大図参照）幅は、前記内壁２２と外壁２８（円弧部２８ａ）との間隔より小さく設定され、内壁２２と外壁２８とに挟持されないように形成されている。   Here, the damper portion 25 (its diameter) is set to be smaller than the distance (in the radial direction) between the inner wall concave portion 23 and the outer wall concave portion 30 in a state before being assembled to the worm wheel 13 and the output side rotating body 15. And the damper part 25 is the state where each member was assembled | attached, The 1st opposing surface 20a (refer FIG.1 and FIG.6) of the position corresponding to the damper part 25 in the disk part 20 of the worm wheel 13, and an output side rotary body In the 15 disk part 27, the inner wall recessed part 23 and the outer wall recessed part 30 are contact | abutted (pressure contact) by being crushed by the 2nd opposing surface 27a (refer FIG. 6) of the position corresponding to the damper part 25 in the axial direction ( (See FIG. 4). That is, when the output side rotating body 15 is assembled from the axial direction to the worm wheel 13 to which the damper member 14 is assembled, until it is crushed by the first and second opposing surfaces 20a, 27a, FIGS. As shown in FIG. 2, a gap S is provided between the damper portion 25 and the outer wall recess 30. When the output-side rotating body 15 is assembled in the axial direction to the position shown in FIG. 6B, the damper portion 25 is crushed by the first and second opposing surfaces 20a and 27a so that the outer wall is added to the outer wall recess 23. It will also contact | abut also to the recessed part 30 (refer FIG.4 and FIG.6 (b)). The width of the elastic connecting portion 26 viewed from the axial direction (see the partially enlarged views in FIGS. 4 and 5) is set smaller than the distance between the inner wall 22 and the outer wall 28 (arc portion 28a), and the inner wall 22 and the outer wall 28 so as not to be sandwiched between them.

又、出力側回転体１５の円盤部２７の中央には軸嵌合部２７ｂが形成され、その軸嵌合部２７ｂに出力軸１６が固定される。
出力軸１６は、図１に示すように、その軸部３１の一端に前記軸嵌合部２７ｂに嵌合可能な嵌合部３２が形成され、その軸部３１の他端にギヤ部３３が形成されている。そして、出力軸１６は、その嵌合部３２側から前記軸孔１８ａに嵌挿され、その嵌合部３２が軸嵌合部２７ｂに嵌合され、その嵌合部３２の先端側に形成された係合溝３２ａに固定リング３４が固定されることで抜け止めがなされて、前記軸支持部１８に回転可能に支持される。又、固定リング３４は、出力側回転体１５が上記したように図６（ｂ）に示す位置まで組み付けられた状態（ダンパ部２５が潰された状態）を保持すべく、出力側回転体１５と当接してその軸方向の位置決めをも兼ねている。 Further, a shaft fitting portion 27b is formed at the center of the disk portion 27 of the output side rotating body 15, and the output shaft 16 is fixed to the shaft fitting portion 27b.
As shown in FIG. 1, the output shaft 16 has a fitting portion 32 that can be fitted to the shaft fitting portion 27 b at one end of the shaft portion 31, and a gear portion 33 at the other end of the shaft portion 31. Is formed. The output shaft 16 is inserted into the shaft hole 18a from the fitting portion 32 side, the fitting portion 32 is fitted into the shaft fitting portion 27b, and is formed on the distal end side of the fitting portion 32. The fixing ring 34 is fixed to the engaging groove 32a to prevent the engagement ring 32a from coming off, and the shaft supporting portion 18 is rotatably supported. Further, the fixing ring 34 is provided so that the output-side rotator 15 is maintained in the state where the output-side rotator 15 is assembled to the position shown in FIG. 6B (the damper portion 25 is crushed). And also serves as an axial positioning.

そして、出力軸１６は、そのギヤ部３３が図示しないレギュレータのギヤ部に噛合され、該レギュレータを介して車両ウインドウ（サイドガラス）に連結されることになる。
前記蓋１７は、ホイール収容部１２ｃの開口部を覆うようにハウジング１２に固定される。 The output shaft 16 is engaged with a gear portion of a regulator (not shown) and the gear portion 33 is connected to a vehicle window (side glass) via the regulator.
The lid 17 is fixed to the housing 12 so as to cover the opening of the wheel accommodating portion 12c.

次に、上記のように構成されたモータ装置（パワーウインド装置）の作用について説明する。
図示しない車両に設けられたパワーウインドスイッチの操作に基づいてモータ装置に電源が供給されると、モータ本体１０の回転軸と共にウォームが回転駆動され、該ウォームの回転に基づいてウォームホイール１３が回転する。すると、ウォームホイール１３の回転力が内壁凹部２３からダンパ部２５を介して外壁凹部３０（出力側回転体１５）に伝達され、出力側回転体１５とともに出力軸１６が回転する。すると、レギュレータ等を介して車両ウインドウが昇降される。 Next, the operation of the motor device (power window device) configured as described above will be described.
When power is supplied to the motor device based on the operation of a power window switch provided on a vehicle (not shown), the worm is driven to rotate together with the rotating shaft of the motor body 10, and the worm wheel 13 is rotated based on the rotation of the worm. To do. Then, the rotational force of the worm wheel 13 is transmitted from the inner wall recess 23 to the outer wall recess 30 (output-side rotating body 15) via the damper portion 25, and the output shaft 16 rotates together with the output-side rotating body 15. Then, the vehicle window is raised and lowered via a regulator or the like.

よって、ウォームホイール１３と出力側回転体１５との間において、衝撃やトルク振動の伝達を低減することができる。例えば、出力側回転体１５（出力軸１６）に急激な負荷がかかっても、図７に示すように、ダンパ部２５が弾性変形しながら出力側回転体１５とウォームホイール１３とが僅かに相対回動するため、ウォームホイール１３と出力側回転体１５との衝撃、ひいてはウォームホイール１３とウォーム間（その噛合部分）等にかかる衝撃を低減することができる。   Therefore, transmission of impact and torque vibration can be reduced between the worm wheel 13 and the output side rotating body 15. For example, even if an abrupt load is applied to the output-side rotator 15 (output shaft 16), the output-side rotator 15 and the worm wheel 13 are slightly relative to each other as shown in FIG. Since it rotates, it is possible to reduce the impact between the worm wheel 13 and the output side rotator 15, and hence the impact between the worm wheel 13 and the worm (the meshing portion).

次に、上記のように構成されたモータ装置（回転伝達装置）の製造方法について説明する。
まず、「ダンパ成形工程」では、図３（ａ）に示すように、予め、前記ダンパ部材１４を構成する前記ダンパ部２５と前記弾性連結部２６とを一対の金型４１，４２にて一体成形しておく。 Next, a method for manufacturing the motor device (rotation transmission device) configured as described above will be described.
First, in the “damper molding step”, as shown in FIG. 3A, the damper portion 25 and the elastic connecting portion 26 constituting the damper member 14 are integrated in advance by a pair of molds 41 and 42. Mold it.

そして、後の「ダンパ部材組み付け工程」では、図２に示すように、各ダンパ部２５（その一部）が各内壁凹部２３に収容されるようにダンパ部材１４を略Ｃ字形状に曲げてウォームホイール１３に組み付けて、湾曲された弾性連結部２６の復元力（直線状に戻ろうとする力）により各ダンパ部２５を各内壁凹部２３に押し付ける。   In the subsequent “damper member assembling step”, as shown in FIG. 2, the damper member 14 is bent into a substantially C shape so that each damper portion 25 (a part thereof) is accommodated in each inner wall recess 23. The damper portions 25 are pressed against the inner wall recesses 23 by being assembled to the worm wheel 13 by the restoring force of the curved elastic connecting portion 26 (force to return to a straight line).

次に、「第２回転体組み付け工程」では、図４に示すように、ダンパ部２５（その一部）が各外壁凹部３０に収容されるように出力側回転体１５をダンパ部材１４が組み付けられたウォームホイール１３に軸方向から組み付ける。又、このとき、図６（ａ）に示す状態から図６（ｂ）に示すように、前記第１及び第２対向面２０ａ，２７ａにてダンパ部２５を潰すことで該ダンパ部２５を内壁凹部２３に加えて外壁凹部３０にも当接（圧接）させる。そして、その状態でウォームホイール１３等をハウジング１２のホイール収容部１２ｃに収容し、出力側回転体１５に出力軸１６を固定リング３４にて固定するとともに、固定リング３４にて出力側回転体１５の軸方向の位置決めを行い、ダンパ部２５が潰れた状態を保持させる。   Next, in the “second rotating body assembling step”, as shown in FIG. 4, the damper member 14 assembles the output-side rotating body 15 so that the damper portion 25 (part thereof) is accommodated in each outer wall recess 30. The worm wheel 13 is assembled from the axial direction. At this time, as shown in FIG. 6 (b) from the state shown in FIG. 6 (a), the damper portion 25 is crushed by the first and second opposing surfaces 20a and 27a, thereby making the damper portion 25 an inner wall. In addition to the recess 23, the outer wall recess 30 is also brought into contact (pressure contact). In this state, the worm wheel 13 and the like are accommodated in the wheel accommodating portion 12 c of the housing 12, and the output shaft 16 is fixed to the output side rotating body 15 by the fixing ring 34, and the output side rotating body 15 is fixed by the fixing ring 34. In this way, the damper portion 25 is kept in a crushed state.

次に、上記実施の形態の特徴的な作用効果を以下に記載する。
（１）ダンパ部材１４の弾性連結部２６は、配設される前の状態において複数のダンパ部２５を直線状に連結する。そして、「ダンパ部材組み付け工程」にて、各ダンパ部２５が各内壁凹部２３に収容されるようにダンパ部材１４が略Ｃ字形状に曲げられてウォームホイール１３に組み付けられた状態では、弾性連結部２６が湾曲され、その湾曲された弾性連結部２６の復元力によりダンパ部２５が内壁凹部２３に押し付けられるため、ダンパ部２５の位置決め保持が容易となる。よって、その後の第２回転体組み付け工程、即ち、ダンパ部２５が各外壁凹部３０に収容されるように出力側回転体１５をダンパ部材１４が組み付けられたウォームホイール１３に軸方向から組み付ける工程（作業）が容易となる。 Next, characteristic effects of the above embodiment will be described below.
(1) The elastic connecting portion 26 of the damper member 14 connects the plurality of damper portions 25 linearly in a state before being disposed. In the “damper member assembling step”, in the state where the damper member 14 is bent into a substantially C shape and assembled to the worm wheel 13 so that each damper portion 25 is accommodated in each inner wall recess 23, the elastic connection Since the portion 26 is curved and the damper portion 25 is pressed against the inner wall concave portion 23 by the restoring force of the curved elastic connecting portion 26, the positioning and holding of the damper portion 25 is facilitated. Therefore, the subsequent second rotating body assembling step, that is, the step of assembling the output-side rotating body 15 from the axial direction to the worm wheel 13 to which the damper member 14 is assembled so that the damper portion 25 is accommodated in each outer wall recess 30 ( Work) becomes easier.

（２）ダンパ部２５は、ウォームホイール１３及び出力側回転体１５に組み付けられる前の状態において内壁凹部２３と外壁凹部３０との間隔より小さく設定されるため、「第２回転体組み付け工程」の際に、第１及び第２対向面２０ａ，２７ａに潰されるまでは、図５及び図６（ａ）に示すように、ダンパ部２５と外壁凹部３０との間に隙間Ｓを設けることができる。よって、ダンパ部２５が削られたり擦れたりすることを低減しながら、スムーズな組み付けが可能となる。しかも、組み付けられた状態ではダンパ部２５は第１及び第２対向面２０ａ，２７ａに潰されることで内壁凹部２３と外壁凹部３０とに当接（圧接）されるため、ウォームホイール１３と出力側回転体１５とが互いにがたついてしまうことはない。   (2) The damper portion 25 is set to be smaller than the interval between the inner wall concave portion 23 and the outer wall concave portion 30 in the state before being assembled to the worm wheel 13 and the output-side rotating body 15, and therefore the “second rotating body assembling step” At this time, until the first and second opposing surfaces 20a and 27a are crushed, a gap S can be provided between the damper portion 25 and the outer wall recess 30 as shown in FIGS. 5 and 6A. . Therefore, it is possible to perform smooth assembly while reducing that the damper portion 25 is scraped or rubbed. In addition, in the assembled state, the damper portion 25 is crushed by the first and second opposing surfaces 20a and 27a and is brought into contact (pressure contact) with the inner wall concave portion 23 and the outer wall concave portion 30, so that the worm wheel 13 and the output side The rotating body 15 does not rattle with each other.

（３）ダンパ部２５は軸方向から見て円形の略円柱状に形成され、その軸方向両端部に円錐状の凸部２５ａが形成されるため、「第２回転体組み付け工程」にて第１及び第２対向面２０ａ，２７ａに潰される際に、径方向に均等に変形し易く、各ダンパ部２５同士での形状を略均等とすることができる。詳しくは、例えば第１及び第２対向面２０ａ，２７ａが互いに若干傾斜している（平行となっていない）ような場合でも、各ダンパ部２５は凸部２５ａの先端から潰されるため、第１及び第２対向面２０ａ，２７ａの近い部分が多く潰されるといったことを回避でき、各ダンパ部２５同士での形状を略均等とすることができる。しかも、ダンパ部２５の軸方向両端部を円錐状の凸部２５ａとすることで、第１及び第２対向面２０ａ，２７ａとの接触面積を小さくすることができ、ウォームホイール１３と出力側回転体１５との（僅かな）相対回動時の摺動抵抗を小さくすることができる。   (3) The damper portion 25 is formed in a substantially cylindrical shape that is circular when viewed from the axial direction, and the conical convex portions 25a are formed at both ends in the axial direction. Therefore, in the “second rotating body assembling step”, When being crushed by the first and second opposing surfaces 20a and 27a, it is easy to deform evenly in the radial direction, and the shapes of the damper portions 25 can be made substantially uniform. Specifically, for example, even when the first and second facing surfaces 20a and 27a are slightly inclined (not parallel), the damper portions 25 are crushed from the tips of the convex portions 25a. In addition, it is possible to avoid the portions near the second facing surfaces 20a and 27a being crushed, and the shapes of the damper portions 25 can be made substantially equal. In addition, by making the both ends in the axial direction of the damper portion 25 conical convex portions 25a, the contact area between the first and second opposing surfaces 20a, 27a can be reduced, and the worm wheel 13 and the output side rotation The sliding resistance at the time of (slight) relative rotation with the body 15 can be reduced.

（４）弾性連結部２６は、軸方向から見た幅が径方向から見た幅より小さいため、ダンパ部材１４が略Ｃ字形状に曲げられる際に、軸直交方向以外に弾性変形し難く（捩れ難く）、ウォームホイール１３への組み付けが容易となる。又、勿論、捩れず組み付けられることで、ダンパ部２５が内壁凹部２３に良好に押し付けられることになる。   (4) The elastic connecting portion 26 is less likely to be elastically deformed in directions other than the axial orthogonal direction when the damper member 14 is bent into a substantially C shape because the width viewed from the axial direction is smaller than the width viewed from the radial direction. Assembling to the worm wheel 13 becomes easy. Of course, the damper portion 25 is favorably pressed against the inner wall concave portion 23 by being assembled without being twisted.

（５）ダンパ部材１４は、ダンパ部２５と弾性連結部２６とが一体成形されてなるため、その成形（ダンパ成形工程）が容易となる。又、ダンパ部材１４は、全体が略直線状であるため、一対の金型４１，４２にて容易に多数個を同時に成形することができる。   (5) Since the damper member 14 is integrally formed with the damper portion 25 and the elastic connecting portion 26, the damper member 14 is easily formed (damper forming step). In addition, since the entire damper member 14 is substantially linear, a plurality of damper members 14 can be easily formed simultaneously with the pair of molds 41 and 42.

上記実施の形態は、以下のように変更してもよい。
・上記実施の形態では、ダンパ部２５は軸方向から見て円形の略円柱状に形成される（図３参照）としたが、これに限定されず、例えば、図８（ａ）に示すように、軸方向から見て円弧部５１ａと直線部５１ｂとを有する柱状のダンパ部５１に形成してもよいし、図８（ｂ）に示すように、軸方向から見て六角形の柱状のダンパ部５２に変更してもよい。尚、勿論、ダンパ部の形状に応じて上記実施の形態の内壁凹部２３や外壁凹部３０の形状を（ダンパ部と密着するように）変更してもよい。 The above embodiment may be modified as follows.
In the above-described embodiment, the damper portion 25 is formed in a substantially cylindrical shape that is circular when viewed from the axial direction (see FIG. 3), but is not limited to this, for example, as shown in FIG. Further, it may be formed in a columnar damper portion 51 having an arc portion 51a and a straight portion 51b when viewed from the axial direction, or as shown in FIG. 8B, a hexagonal columnar shape when viewed from the axial direction. You may change to the damper part 52. FIG. Of course, the shapes of the inner wall recess 23 and the outer wall recess 30 of the above embodiment may be changed (so as to be in close contact with the damper portion) according to the shape of the damper portion.

・上記実施の形態では、ダンパ部２５は、ウォームホイール１３及び出力側回転体１５に組み付けられる前の状態において内壁凹部２３と外壁凹部３０との間隔より小さく設定され、第１及び第２対向面２０ａ，２７ａに潰されることで内壁凹部２３に加えて外壁凹部３０にも当接（圧接）されるとしたが、これに限定されず、組み付けられる前の状態で内壁凹部２３と外壁凹部３０との間隔以上に設定されたものとしてもよい。尚、この場合は、第１及び第２対向面２０ａ，２７ａにて軸方向に潰す必要はない。   In the above embodiment, the damper portion 25 is set to be smaller than the interval between the inner wall concave portion 23 and the outer wall concave portion 30 in a state before being assembled to the worm wheel 13 and the output side rotating body 15, and the first and second opposing surfaces Although it is said that it will contact | abut (pressure contact) not only to the inner-wall recessed part 23 but to the outer-wall recessed part 30 by being crushed by 20a, 27a, it is not limited to this, It is good also as what was set more than the space | interval of. In this case, the first and second opposing surfaces 20a and 27a do not need to be crushed in the axial direction.

・上記実施の形態では、ダンパ部２５の軸方向両端部には円錐状の凸部２５ａが形成されるとしたが、これに限定されず、凸部２５ａの形状を変更してもよいし、凸部２５ａを削除してもよい。   In the above embodiment, the conical convex portions 25a are formed at both ends in the axial direction of the damper portion 25. However, the present invention is not limited to this, and the shape of the convex portions 25a may be changed. The convex portion 25a may be deleted.

・上記実施の形態では、弾性連結部２６は、軸方向から見た幅が径方向から見た幅より小さく設定されるとしたが、これに限定されず、軸方向から見た幅と径方向から見た幅を同じとしてもよいし、逆に軸方向から見た幅を径方向から見た幅より大きく設定してもよい。   In the above embodiment, the elastic connecting portion 26 is set so that the width viewed from the axial direction is set smaller than the width viewed from the radial direction, but is not limited thereto, and the width and radial direction viewed from the axial direction. The width viewed from the side may be the same, or conversely, the width viewed from the axial direction may be set larger than the width viewed from the radial direction.

・上記実施の形態では、ダンパ部材１４は、ダンパ部２５と弾性連結部２６とが一体成形されてなるとしたが、これに限定されず、例えば、複数のダンパ部をゴム材にて成形し、弾性連結部を例えば金属の長尺状の板ばねとし、板ばねがダンパ部を串刺しした構成のもの（板ばねを組み付けたものや板ばねをインサート成形したもの）としてもよい。   In the above embodiment, the damper member 14 is formed by integrally forming the damper portion 25 and the elastic connecting portion 26. However, the present invention is not limited to this, and for example, a plurality of damper portions are formed of a rubber material. The elastic connecting portion may be, for example, a metal long plate spring, and the plate spring may have a configuration in which the damper portion is skewered (a plate spring is assembled or a plate spring is insert-molded).

・上記実施の形態では、ダンパ部材１４の弾性連結部２６は、配設される前の状態において複数のダンパ部２５を直線状に連結するとしたが、完全な直線状でなくても略直線状であればよく、詳しくは、組み付けられた状態で復元力によりダンパ部２５を内壁凹部２３に押し付けられる範囲で湾曲していてもよい。   In the above embodiment, the elastic connecting portion 26 of the damper member 14 is connected to the plurality of damper portions 25 in a straight line shape before being disposed, but it is substantially linear even if it is not completely straight. Specifically, the damper portion 25 may be curved in a range in which the damper portion 25 is pressed against the inner wall concave portion 23 by the restoring force in the assembled state.

・上記実施の形態では特に言及していないが、ダンパ部材１４にウォームホイール１３や出力側回転体１５との吸着を防ぐための塩素処理を施してもよいし、塩素処理を施さなくてもよい。   Although not specifically mentioned in the above embodiment, the damper member 14 may be subjected to chlorination treatment for preventing adsorption to the worm wheel 13 and the output-side rotator 15 or may not be subjected to chlorination treatment. .

・上記実施の形態では、ウォームホイール１３及び出力側回転体１５は、合成樹脂製であるとしたが、これに限定されず、金属製等に変更してもよい。
・上記実施の形態では、パワーウインド装置用のモータ装置に具体化したが、他の装置用のモータ装置に具体化してもよい。又、モータ装置以外でも、第１回転体と該第１回転体に対して同軸配置された第２回転体との間にダンパ部材が介在され、第１回転体から第２回転体への回転力又は第２回転体から第１回転体への回転力を、ダンパ部材を介して伝達する構造を備えたものであれば、他の装置（回転伝達装置）に具体化してもよい。 In the above embodiment, the worm wheel 13 and the output-side rotator 15 are made of synthetic resin, but are not limited to this, and may be made of metal or the like.
In the above embodiment, the motor device for the power window device is embodied, but the motor device for other devices may be embodied. In addition to the motor device, a damper member is interposed between the first rotating body and the second rotating body arranged coaxially with respect to the first rotating body, so that the rotation from the first rotating body to the second rotating body is performed. As long as it has a structure for transmitting the force or the rotational force from the second rotator to the first rotator via the damper member, it may be embodied in another device (rotation transmission device).

１３…ウォームホイール（第１回転体）、１４…ダンパ部材、１５…出力側回転体（第２回転体）、２０ａ…第１対向面、２２…内壁、２３…内壁凹部、２５，５１，５２…ダンパ部、２５ａ…凸部、２６…弾性連結部、２７ａ…第２対向面、２８…外壁、３０…外壁凹部。   DESCRIPTION OF SYMBOLS 13 ... Worm wheel (1st rotary body), 14 ... Damper member, 15 ... Output side rotary body (2nd rotary body), 20a ... 1st opposing surface, 22 ... Inner wall, 23 ... Inner wall recessed part, 25, 51, 52 DESCRIPTION OF SYMBOLS ... Damper part, 25a ... Convex part, 26 ... Elastic connection part, 27a ... 2nd opposing surface, 28 ... Outer wall, 30 ... Outer wall recessed part.

Claims (8)

第１回転体と該第１回転体に対して同軸配置された第２回転体との間にダンパ部材が介在され、前記第１回転体から前記第２回転体への回転力又は前記第２回転体から前記第１回転体への回転力を、前記ダンパ部材を介して伝達する回転伝達装置であって、
前記第１回転体には内壁が設けられるとともに、該内壁には径方向外側に凹設された内壁凹部が周方向に複数形成され、
前記第２回転体には前記内壁の内側で該内壁と径方向に対向する外壁が設けられるとともに、該外壁には径方向内側に凹設された外壁凹部が前記内壁凹部とそれぞれ対向するように周方向に複数形成され、
前記ダンパ部材は、前記内壁凹部に収容されるとともに前記外壁凹部に収容されるように配設されるダンパ部と、配設される前の状態において複数の前記ダンパ部を略直線状に連結する弾性連結部とを有し、
各前記ダンパ部が各前記内壁凹部に収容されるように前記ダンパ部材が略Ｃ字形状に曲げられて前記第１回転体に組み付けられた状態で、湾曲された前記弾性連結部の復元力により前記ダンパ部が前記内壁凹部に押し付けられるようにし、
前記第１及び前記第２回転体は、組み付けられた状態で前記ダンパ部と対応した位置で軸方向に対向する第１及び第２対向面を有し、
前記ダンパ部は、前記第１及び前記第２回転体に組み付けられる前の状態において前記内壁凹部と前記外壁凹部との間隔より小さく設定され、組み付けられた状態で前記第１及び第２対向面に潰されることで前記内壁凹部と前記外壁凹部とに当接されたことを特徴とする回転伝達装置。 A damper member is interposed between the first rotating body and the second rotating body arranged coaxially with respect to the first rotating body, and the rotational force from the first rotating body to the second rotating body or the second A rotation transmission device that transmits a rotational force from a rotating body to the first rotating body via the damper member,
The first rotating body is provided with an inner wall, and the inner wall is formed with a plurality of inner wall concave portions recessed radially outward in the circumferential direction.
The second rotating body is provided with an outer wall radially opposed to the inner wall on the inner side of the inner wall, and an outer wall concave portion provided radially inwardly on the outer wall faces the inner wall concave portion. A plurality are formed in the circumferential direction,
The damper member is connected to the damper portion accommodated in the inner wall recess and disposed to be accommodated in the outer wall recess, and the plurality of damper portions are connected in a substantially straight line before being disposed. An elastic connecting part,
With the damper member bent in a substantially C shape and assembled to the first rotating body so that each damper portion is accommodated in each inner wall recess, the restoring force of the curved elastic coupling portion The damper portion is pressed against the inner wall recess ,
The first and second rotating bodies have first and second opposing surfaces that face in the axial direction at a position corresponding to the damper portion in an assembled state;
The damper portion is set to be smaller than the interval between the inner wall concave portion and the outer wall concave portion in a state before being assembled to the first and second rotating bodies, and is mounted on the first and second opposing surfaces in the assembled state. The rotation transmission device, wherein the rotation transmission device is brought into contact with the inner wall recess and the outer wall recess by being crushed . 請求項１に記載の回転伝達装置において、
前記ダンパ部は軸方向から見て円形の略円柱状に形成され、その軸方向端部に円錐状の凸部が形成されたことを特徴とする回転伝達装置。 The rotation transmission device according to claim 1 ,
The rotation transmission device according to claim 1, wherein the damper portion is formed in a substantially cylindrical shape that is circular when viewed from the axial direction, and a conical convex portion is formed at an end portion in the axial direction. 請求項１又は２に記載の回転伝達装置において、
前記弾性連結部は、軸方向から見た幅が径方向から見た幅より小さいことを特徴とする回転伝達装置。 In the rotation transmission device according to claim 1 or 2 ,
The rotation transmission device according to claim 1, wherein the elastic connecting portion has a width viewed from an axial direction smaller than a width viewed from a radial direction. 請求項１乃至３のいずれか１項に記載の回転伝達装置において、
前記ダンパ部材は、前記ダンパ部と前記弾性連結部とが一体成形されてなることを特徴とする回転伝達装置。 In the rotation transmission device according to any one of claims 1 to 3 ,
The rotation transmission device, wherein the damper member is formed by integrally forming the damper portion and the elastic coupling portion. 第１回転体と該第１回転体に対して同軸配置された第２回転体との間にダンパ部材が介在され、前記第１回転体から前記第２回転体への回転力又は前記第２回転体から前記第１回転体への回転力を、前記ダンパ部材を介して伝達する回転伝達装置の製造方法であって、
前記第１回転体には内壁が設けられるとともに、該内壁には径方向外側に凹設された内壁凹部が周方向に複数形成されたものであり、
前記第２回転体には前記内壁の内側で該内壁と径方向に対向する外壁が設けられるとともに、該外壁には径方向内側に凹設された外壁凹部が前記内壁凹部とそれぞれ対向するように周方向に複数形成されたものであり、
前記ダンパ部材は、前記内壁凹部に収容されるとともに前記外壁凹部に収容されるように配設されるダンパ部と、配設される前の状態において複数の前記ダンパ部を略直線状に連結する弾性連結部とを有するものであり、
各前記ダンパ部が各前記内壁凹部に収容されるように前記ダンパ部材を略Ｃ字形状に曲げて前記第１回転体に組み付けて、湾曲された前記弾性連結部の復元力により前記ダンパ部を前記内壁凹部に押し付けるダンパ部材組み付け工程と、
前記ダンパ部材組み付け工程の後、前記ダンパ部が各前記外壁凹部に収容されるように前記第２回転体を前記ダンパ部材が組み付けられた前記第１回転体に軸方向から組み付ける第２回転体組み付け工程と
を備え、
前記第１及び前記第２回転体は、組み付けられた状態で前記ダンパ部と対応した位置で軸方向に対向する第１及び第２対向面を有するものであり、
前記ダンパ部は、前記第１及び前記第２回転体に組み付けられる前の状態において前記内壁凹部と前記外壁凹部との間隔より小さく設定されるものであり、
前記第２回転体組み付け工程では、前記第１及び第２対向面にて前記ダンパ部を潰すことで該ダンパ部を前記内壁凹部と前記外壁凹部とに当接させたことを特徴とする回転伝達装置の製造方法。 A damper member is interposed between the first rotating body and the second rotating body arranged coaxially with respect to the first rotating body, and the rotational force from the first rotating body to the second rotating body or the second A method of manufacturing a rotation transmission device that transmits a rotational force from a rotating body to the first rotating body via the damper member,
The first rotating body is provided with an inner wall, and the inner wall is formed with a plurality of inner wall recesses recessed radially outward in the circumferential direction.
The second rotating body is provided with an outer wall radially opposed to the inner wall on the inner side of the inner wall, and an outer wall concave portion provided radially inwardly on the outer wall faces the inner wall concave portion. Is formed in the circumferential direction,
The damper member is connected to the damper portion accommodated in the inner wall recess and disposed to be accommodated in the outer wall recess, and the plurality of damper portions are connected in a substantially straight line before being disposed. An elastic connecting part,
The damper member is bent into a substantially C shape so that each damper portion is accommodated in each inner wall recess, and is assembled to the first rotating body, and the damper portion is moved by the restoring force of the curved elastic connecting portion. A damper member assembling step to be pressed against the inner wall recess;
After the damper member assembling step, the second rotating body is assembled from the axial direction to the first rotating body on which the damper member is assembled so that the damper portion is accommodated in each of the outer wall recesses. A process ,
The first and second rotating bodies have first and second opposing surfaces that face each other in the axial direction at a position corresponding to the damper portion in an assembled state;
The damper portion is set to be smaller than an interval between the inner wall concave portion and the outer wall concave portion in a state before being assembled to the first and second rotating bodies,
In the second rotating body assembling step, the damper is brought into contact with the inner wall recess and the outer wall recess by crushing the damper on the first and second opposing surfaces. Device manufacturing method. 請求項５に記載の回転伝達装置の製造方法において、
前記ダンパ部は軸方向から見て円形の略円柱状に形成され、その軸方向端部に円錐状の凸部が形成されたものであることを特徴とする回転伝達装置の製造方法。 In the manufacturing method of the rotation transmission device according to claim 5 ,
The method of manufacturing a rotation transmitting device, wherein the damper portion is formed in a substantially cylindrical shape that is circular when viewed from the axial direction, and a conical convex portion is formed at an end portion in the axial direction. 請求項５又は６に記載の回転伝達装置の製造方法において、
前記弾性連結部は、軸方向から見た幅が径方向から見た幅より小さいものであることを特徴とする回転伝達装置の製造方法。 In the manufacturing method of the rotation transmission device according to claim 5 or 6 ,
The method of manufacturing a rotation transmitting device according to claim 1, wherein the elastic connecting portion has a width viewed from the axial direction smaller than a width viewed from the radial direction. 請求項５乃至７のいずれか１項に記載の回転伝達装置の製造方法において、
前記ダンパ部材を構成する前記ダンパ部と前記弾性連結部とを一体成形するダンパ成形工程を備えたことを特徴とする回転伝達装置の製造方法。 In the manufacturing method of the rotation transmission device according to any one of claims 5 to 7 ,
A method of manufacturing a rotation transmission device, comprising: a damper forming step of integrally forming the damper portion and the elastic connecting portion constituting the damper member.
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