JP2008230543A - Waiting mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To attain a non-large shape in a radial direction even if a lot of winding numbers of spring are adopted, and to attain a simple structure, high design freedom and inexpensive cost. <P>SOLUTION: An input lever 14 is fixed to an input shaft 12, a lever extremity bent to an L shape is abutted on an abutment piece 16a of an outer peripheral end of a first spiral spring 16, and rotation of the input shaft 12 is added to the outer peripheral end of the first spiral spring 16 and is rolled-in. Between the input shaft 12 and an output drum 22, the first spiral spring 16 and a second reversely wound spiral spring 18 are coaxially arranged adjacent to each other. A bushing member 20 is connected by fitting a fitting piece 16b of an inner peripheral end of the first spiral spring 16 and a fitting piece 18b of an inner peripheral end of the second spiral spring 18 to an axial groove 20a on an outer periphery, rotation by rolling-in of the first spiral spring 16 is transmitted to the second spiral spring 18 to perform rolling-in. The output drum 22 has a cam projection 24, it abuts on an abutment piece 18a of the outer peripheral end of the second spiral spring 18, and it takes out rotation to transmit it to the output drum 22. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、ロータリアクチュエータの駆動回転により２輪駆動と４輪駆動を切り替える待ち機構に関し、特に、入力シフト回転による駆動力を渦巻きばねの巻き込みにより蓄積してギア位相が揃った際にシフトギアを移動させる待ち機構に関する。
The present invention relates to a waiting mechanism that switches between two-wheel drive and four-wheel drive by driving rotation of a rotary actuator, and in particular, shift gears are moved when gear phases are aligned by accumulating driving force due to input shift rotation by winding a spiral spring. Relates to a waiting mechanism.

従来、ロータリアクチュエータの駆動回転により２輪駆動と４輪駆動を切り替える待ち機構としては、例えば図４のものが知られている（特許文献１参照）。   Conventionally, as a waiting mechanism that switches between two-wheel drive and four-wheel drive by driving rotation of a rotary actuator, for example, the one shown in FIG. 4 is known (see Patent Document 1).

図４（Ａ）は従来の待ち機構の組立分解図であり、入力軸１００、入力レバー１０２、渦巻きばね１０４、ブッシュ部材１０６、出力レバー１０８及び出力軸１１０で構成される。更に図４（Ｂ）は渦巻きばね１０４とブッシュ部材１０６を分離した組立分解図である。   FIG. 4A is an exploded view of a conventional waiting mechanism, which includes an input shaft 100, an input lever 102, a spiral spring 104, a bush member 106, an output lever 108 and an output shaft 110. FIG. 4B is an exploded view in which the spiral spring 104 and the bush member 106 are separated.

入力軸１００にはモータを備えたロータリアクチュエータからの回転が入力され、入力軸１００に固定した入力レバー１０２を右回りに回転させる。入力レバー１０２の先端は軸方向にＬ字型に屈曲されており、渦巻きばね１０４の外周端に起立した当接片１１２に当接し、渦巻きばね１０４を巻き込む。   The input shaft 100 receives rotation from a rotary actuator provided with a motor, and rotates an input lever 102 fixed to the input shaft 100 clockwise. The distal end of the input lever 102 is bent in an L shape in the axial direction, abuts against the abutting piece 112 standing at the outer peripheral end of the spiral spring 104, and winds the spiral spring 104.

渦巻きばね１０４の内周端の嵌合片１１４はブッシュ部材１０６の溝１１６に嵌合しており、更にブッシュ部材１０６に固定した連結レバー１１８の先端は、出力軸１１０に固定して先端を軸方向にＬ字型に屈曲した出力レバー１０８の左側に当接している。   The fitting piece 114 at the inner peripheral end of the spiral spring 104 is fitted in the groove 116 of the bush member 106, and the tip of the connecting lever 118 fixed to the bush member 106 is fixed to the output shaft 110 and the tip is pivoted. It abuts on the left side of the output lever 108 bent in an L shape in the direction.

このとき出力軸１１０側の図示しないカップリングスリーブのスプラインがシフト先のギアの位相と一致していない場合は、出力軸１１０は動くことができず、渦巻きばね１０４の内周端はブッシュ部材１０６及び出力レバー１０８を介して出力軸１１０と共に固定状態にあり、入力軸１００のシフト回転に応じて渦巻きばね１０４が巻き込まれ、駆動力を蓄積する。   At this time, if the spline of a coupling sleeve (not shown) on the output shaft 110 side does not match the phase of the gear to be shifted, the output shaft 110 cannot move, and the inner peripheral end of the spiral spring 104 is the bush member 106. And the output shaft 110 through the output lever 108 are fixed, and the spiral spring 104 is wound in accordance with the shift rotation of the input shaft 100 to accumulate the driving force.

その後、スプラインに対しシフト先のギアとの位相が合うと、巻き込まれた渦巻きばね１０４の力でブッシュ部材１０６及び出力レバー１０８を介して出力軸１１０が回転され、シフトを完了する。   Thereafter, when the phase of the gear to be shifted with respect to the spline is matched, the output shaft 110 is rotated via the bush member 106 and the output lever 108 by the force of the spiral spring 104 that is wound in, and the shift is completed.

また渦巻きばねを使用した従来の待ち機構として、特性の異なる渦巻きばねを２本使い、各々の内径端を出力軸に結合し、回転方向によって待ちトルクを変えたものもある（特許文献２参照）。   In addition, as a conventional waiting mechanism using a spiral spring, there are two which use two spiral springs having different characteristics, connect each inner diameter end to an output shaft, and change the waiting torque depending on the rotation direction (see Patent Document 2). .

更に、２本の渦巻きばねを同方向に配置し、内径端に係合したブッシュからアームを出し、入出力軸を挟み込み、方向によって、片方の渦巻きばねを縮めたり、両方の渦巻きばねを縮めたりして、回転方向により待ちトルクを変えるものもある（特許文献３参照）。
特開平５−３２７１６２号公報 特開昭６４−８５８３９号公報 特開平７−２１５０８６号公報 In addition, two spiral springs are arranged in the same direction, the arm is taken out from the bush engaged with the inner diameter end, the input / output shaft is sandwiched, and depending on the direction, one spiral spring is shrunk, or both spiral springs are shrunk. In some cases, the waiting torque is changed depending on the rotation direction (see Patent Document 3).
JP-A-5-327162 JP-A 64-85839 Japanese Patent Laid-Open No. 7-215086

しかしながら、このような従来の待ち機構にあっては次の問題がある。まず特許文献１の１本の渦巻きばねに対しブッシュからアームを出して入出力軸を挟み込む待ち機構は、非常に合理的なデザインであるが、ばね定数を抑えるために回転角を大きく取りたい時には、渦巻きばねの巻き数を増やさなければならず、これにより待ち機構の外径が決まってしまうので、設計の自由度があまりない。   However, such a conventional waiting mechanism has the following problems. First, the waiting mechanism that puts out the arm from the bush and sandwiches the input / output shaft with respect to one spiral spring of Patent Document 1 is a very rational design, but when you want to take a large rotation angle to suppress the spring constant Since the number of turns of the spiral spring must be increased, and the outer diameter of the waiting mechanism is thus determined, there is not much design freedom.

また、実際に生産されているものでは、連結レバー１１８を一体に設けたブッシュ部材１０６は焼結製品であり、製造コストが嵩み、高価になる問題点もある。   Further, in the actual production, the bush member 106 integrally provided with the connecting lever 118 is a sintered product, and there is a problem that the manufacturing cost increases and the cost becomes high.

また特許文献２，３のブッシュ部材を２本の渦巻きばね連結のみに使用した待ち機構にあっては、回転方向に応じて異なった待ちトルクを個別に設定可能であるが、特に方向によって待ちトルクを変える必要が無い場合は、構造が複雑化し、スペースの無駄が生じる問題がある。   Further, in the waiting mechanism using the bush members of Patent Documents 2 and 3 only for connecting two spiral springs, different waiting torques can be set depending on the rotation direction. When there is no need to change the structure, there is a problem that the structure becomes complicated and space is wasted.

本発明は、ばねの巻き数を多くとっても径方向に大きくならず、構造が簡単で設計自由度が高いコスト的にも安価な待ち機構を提供することを目的とする。
It is an object of the present invention to provide a waiting mechanism that does not increase in the radial direction even if the number of turns of the spring is large, has a simple structure, and has a high degree of design freedom and is inexpensive in terms of cost.

本発明は待ち機構を提供する。本発明は、回転駆動される入力軸と、所定の角度回転することによってシフトを行う出力軸との間に設けられた待ち機構に於いて、
入力軸及び出力軸と同軸に配置された第１渦巻きばねと、
第１渦巻きばねと同軸に出力軸側に隣接配置された逆巻きの第２渦巻きばねと、
入力軸の一方向の回転を第１渦巻きばねの一方の周端に加えて巻き込むと共に入力軸の逆方向の回転を第２渦巻きばねの一方の周端に加えて巻き込む入力回転伝達部材と、
第１渦巻きばねの他方の周端と第２渦巻きばねの他方の周端を連結し、第１渦巻きばねと第２渦巻きばねのいずれか一方の巻き込みによる回転を他方に伝達して巻き込む連結部材と、
第２渦巻きばねの一方の周端又は第１渦巻きばねの一方の周端の当接を受け、ばね巻き込みによる回転を取出して出力軸に伝達する出力回転伝達部材と、
を備えたことを特徴とする。 The present invention provides a waiting mechanism. The present invention relates to a waiting mechanism provided between an input shaft that is rotationally driven and an output shaft that shifts by rotating a predetermined angle.
A first spiral spring disposed coaxially with the input shaft and the output shaft;
A reverse spiral second spiral spring disposed adjacent to the first spiral spring coaxially with the output shaft;
An input rotation transmission member that winds by applying rotation in one direction of the input shaft to one circumferential end of the first spiral spring and winding the rotation in the opposite direction of the input shaft to one circumferential end of the second spiral spring;
A connecting member that connects the other peripheral end of the first spiral spring and the other peripheral end of the second spiral spring, transmits the rotation of one of the first spiral spring and the second spiral spring to the other, and winds ,
An output rotation transmitting member that receives contact of one peripheral end of the second spiral spring or one peripheral end of the first spiral spring, extracts rotation by spring winding, and transmits the rotation to the output shaft;
It is provided with.

また本発明の具体的な形態にあっては、回転駆動される入力軸と、所定の角度回転することによってシフトを行う出力軸との間に設けられた待ち機構に於いて、
入力軸及び出力軸と同軸に配置された第１渦巻きばねと、
第１渦巻きばねと同軸に出力軸側に隣接配置された逆巻きの第２渦巻きばねと、
入力軸の一方向の回転を第１渦巻きばねの外周端に加えて巻き込むと共に入力軸の逆方向の回転を第２渦巻きばねの外周端に加えて巻き込む入力回転伝達部材と、
第１渦巻きばねの内周端と第２渦巻きばねの内周端を連結し、第１渦巻きばねと第２渦巻きばねのいずれか一方の巻き込みによる回転を他方に伝達して巻き込む連結部材と、
第２渦巻きばねの外周端又は第１渦巻きばねの外周端の当接を受け、ばね巻き込みによる回転を取出して出力軸に伝達する出力回転伝達部材と、
を備えたことを特徴とする。 In a specific form of the present invention, in a waiting mechanism provided between an input shaft that is rotationally driven and an output shaft that shifts by rotating a predetermined angle,
A first spiral spring disposed coaxially with the input shaft and the output shaft;
A reverse spiral second spiral spring disposed adjacent to the first spiral spring coaxially with the output shaft;
An input rotation transmission member that winds by applying rotation in one direction of the input shaft to the outer peripheral end of the first spiral spring and winding the rotation in the opposite direction of the input shaft to the outer peripheral end of the second spiral spring;
A connecting member that connects the inner peripheral end of the first spiral spring and the inner peripheral end of the second spiral spring, transmits the rotation of one of the first spiral spring and the second spiral spring to the other, and winds it in;
An output rotation transmitting member that receives contact of the outer peripheral end of the second spiral spring or the outer peripheral end of the first spiral spring, extracts the rotation by the spring winding, and transmits it to the output shaft;
It is provided with.

また本発明の具体的な別の形態にあっては、回転駆動される入力軸と、所定の角度回転することによってシフトを行う出力軸との間に設けられた待ち機構に於いて、
入力軸及び出力軸と同軸に配置された第１渦巻きばねと、
第１渦巻きばねと同軸に出力軸側に隣接配置された逆巻きの第２渦巻きばねと、
入力軸の一方向の回転を第１渦巻きばねの内周端に加えて巻き込むと共に入力軸の逆方向の回転を第２渦巻きばねの内周端に加えて巻き込む入力回転伝達部材と、
第１渦巻きばねの外周端と第２渦巻きばねの外周端を連結し、第１渦巻きばねと第２渦巻きばねのいずれか一方の巻き込みによる回転を他方に伝達して巻き込む連結部材と、
第２渦巻きばねの内周端又は第１渦巻きばねの内周端の当接を受け、ばね巻き込みによる回転を取出して出力軸に伝達する出力回転伝達部材と、
を備えたことを特徴とする。 In another specific form of the present invention, in the waiting mechanism provided between the rotationally driven input shaft and the output shaft that shifts by rotating a predetermined angle,
A first spiral spring disposed coaxially with the input shaft and the output shaft;
A reverse spiral second spiral spring disposed adjacent to the first spiral spring coaxially with the output shaft;
An input rotation transmission member that winds by applying rotation in one direction of the input shaft to the inner circumferential end of the first spiral spring and winding the rotation in the opposite direction of the input shaft to the inner circumferential end of the second spiral spring;
A connecting member that connects the outer peripheral end of the first spiral spring and the outer peripheral end of the second spiral spring, transmits the rotation of one of the first spiral spring and the second spiral spring to the other, and winds it in;
An output rotation transmitting member that receives the contact of the inner peripheral end of the second spiral spring or the inner peripheral end of the first spiral spring, extracts the rotation by the spring winding, and transmits the rotation to the output shaft;
It is provided with.

また本発明のより具体的な形態にあっては、回転駆動される入力軸と、所定の角度回転することによってシフトを行う出力軸との間に設けられた待ち機構に於いて、
入力軸及び出力軸と同軸に配置され、外周端に当接片を起立すると共に内周端に嵌合片を起立した第１渦巻きばねと、
第１渦巻きばねと同軸に出力軸側に隣接配置され、内周端に嵌合片を起立すると共に外周端に当接片を起立した逆巻きの第２渦巻きばねと、
入力軸に固定され、Ｌ字型に屈曲したレバー先端を第１渦巻きばねの外周端の当接片と第２渦巻きばねの外周端の当接片との間に位置し、入力軸の一方向の回転により第１渦巻きばねの外周端に当接して巻き込むと共に入力軸の逆方向の回転により第２渦巻きばねの外周端に当接して巻き込む入力レバーと、
第１渦巻きばねの内周端の嵌合片と第２渦巻きばねの内周端の嵌合片を外周軸方向の溝に嵌合して第１渦巻きばねと第２渦巻きばねのいずれか一方の巻き込みによる回転を他方に伝達して巻き込むブッシュ部材と、
第２渦巻きばねの外周端の当接片の当接又は第１渦巻きばねの外周端の当接片の当接を受け、ばね巻きこみによる回転を出力軸に伝達する出力軸に形成されたカム突起と、
を備えたことを特徴とする。 In a more specific form of the present invention, in a waiting mechanism provided between an input shaft that is rotationally driven and an output shaft that shifts by rotating a predetermined angle,
A first spiral spring which is arranged coaxially with the input shaft and the output shaft and has a contact piece standing at the outer peripheral end and a fitting piece rising at the inner peripheral end;
A second spiral spring of reverse winding, which is disposed adjacent to the output shaft side coaxially with the first spiral spring and has a fitting piece upright at the inner peripheral end and a contact piece upright at the outer peripheral end;
The lever tip fixed to the input shaft and bent in an L shape is positioned between the contact piece of the outer peripheral end of the first spiral spring and the contact piece of the outer peripheral end of the second spiral spring, and is in one direction of the input shaft An input lever that abuts and winds in contact with the outer peripheral end of the first spiral spring and rotates in the reverse direction of the input shaft by the rotation of the first spiral spring;
The fitting piece at the inner circumferential end of the first spiral spring and the fitting piece at the inner circumferential end of the second spiral spring are fitted into a groove in the outer peripheral axial direction, and either the first spiral spring or the second spiral spring is fitted. A bush member that transmits the rotation of the winding to the other and winds it,
Cam protrusion formed on the output shaft that receives the contact of the contact piece of the outer peripheral end of the second spiral spring or the contact piece of the outer peripheral end of the first spiral spring and transmits the rotation caused by the spring winding to the output shaft. When,
It is provided with.

さらに本発明のより具体的な別の形態にあっては、回転駆動される入力軸と、所定の角度回転することによってシフトを行う出力軸との間に設けられた待ち機構に於いて、
入力軸及び出力軸と同軸に配置され、内周端に当接片を起立すると共に外周端に嵌合片を起立した第１渦巻きばねと、
第１渦巻きばねと同軸に出力軸側に隣接配置され、外周端に嵌合片を起立すると共に内周端に当接片を起立した逆巻きの第２渦巻きばねと、
入力軸に固定され、Ｌ字型に屈曲したレバー先端を第１渦巻きばねの内周端の当接片と第２渦巻きばねの内周端の当接片との間に位置し、入力軸の一方向の回転により第１渦巻きばねの内周端に当接して巻き込むと共に入力軸の逆方向の回転により第２渦巻きばねの内周端に当接して巻き込む入力レバーと、
第１渦巻きばねの外周端の嵌合片と第２渦巻きばねの外周端の嵌合片を内周軸方向の溝に嵌合して第１渦巻きばねと第２渦巻きばねのいずれか一方の巻き込みによる回転を他方に伝達して巻き込むブッシュ部材と、
第２渦巻きばねの内周端の当接片の当接又は第１渦巻きばねの内周端の当接片の当接を受け、ばね巻きこみによる回転を出力軸に伝達する前記出力軸に形成されたカム突起と、
を備えたことを特徴とする。
Furthermore, in another more specific form of the present invention, in a waiting mechanism provided between an input shaft that is rotationally driven and an output shaft that shifts by rotating a predetermined angle,
A first spiral spring which is arranged coaxially with the input shaft and the output shaft and has a contact piece standing at the inner peripheral end and a fitting piece rising at the outer peripheral end;
A second spiral spring of reverse winding, which is arranged adjacent to the output shaft side coaxially with the first spiral spring and has a fitting piece upright at the outer peripheral end and a contact piece upright at the inner peripheral end;
The tip of the lever fixed to the input shaft and bent in an L shape is located between the contact piece of the inner peripheral end of the first spiral spring and the contact piece of the inner peripheral end of the second spiral spring. An input lever which is brought into contact with the inner circumferential end of the first spiral spring by rotation in one direction and is brought into contact with the inner circumferential end of the second spiral spring by rotation in the reverse direction of the input shaft;
A fitting piece at the outer peripheral end of the first spiral spring and a fitting piece at the outer peripheral end of the second spiral spring are fitted into a groove in the inner peripheral axial direction, and either the first spiral spring or the second spiral spring is involved. A bushing member that transmits the rotation of
It is formed on the output shaft that receives the contact of the contact piece at the inner peripheral end of the second spiral spring or the contact piece of the inner peripheral end of the first spiral spring and transmits the rotation caused by the spring winding to the output shaft. Cam protrusion,
It is provided with.

本発明によれば、巻き方向の異なる２本の渦巻きばねを軸方向に並列に配置し、ばね内周端を連結部材（ブッシュ部材）で連結して一本の渦巻きばねとして使用することで、部品点数は一点増えるものの、２本の渦巻きばねを連結する連結部材（ブッシュ部材）は外周にばね端部を嵌合する溝を備えた円筒状の部材で済み、従来のようにレバーを一体に形成する必要がなく、構造が簡単で高い部品精度が要求されず、非常に安価に製作することができる。   According to the present invention, two spiral springs having different winding directions are arranged in parallel in the axial direction, and the spring inner peripheral ends are connected by a connecting member (bush member) to be used as a single spiral spring. Although the number of parts increases by one, the connecting member (bush member) that connects the two spiral springs is a cylindrical member with a groove that fits the spring end on the outer periphery, and the lever is integrated as in the conventional case. It is not necessary to form, and the structure is simple, high component accuracy is not required, and it can be manufactured at a very low cost.

また、巻き方向を逆にした同じ２本の渦巻きばねを並列に並べて連結部材（ブッシュ部材）にて連結することで、１本の渦巻きばねとして使用するため、巻き数を多くとっても径方向に大きくなることを抑えることができ、必要とされる待ちトルク特性に対し、レイアウト上の設計の自由度を高めることができる。
In addition, the same two spiral springs with the winding direction reversed are arranged in parallel and connected by a connecting member (bush member), so that it can be used as a single spiral spring. Therefore, the degree of freedom in designing the layout can be increased with respect to the required waiting torque characteristics.

図１は本発明による待ち機構の実施形態を示した組立分解図である。図１において、本実施形態の待ち機構１０は、入力軸１２、入力レバー１４、第１渦巻きばね１６、第２渦巻きばね１８、連結部材としてのブッシュ部材２０、及び出力軸として機能する出力ドラム２２で構成される。   FIG. 1 is an exploded view showing an embodiment of a waiting mechanism according to the present invention. In FIG. 1, the waiting mechanism 10 of this embodiment includes an input shaft 12, an input lever 14, a first spiral spring 16, a second spiral spring 18, a bush member 20 as a connecting member, and an output drum 22 that functions as an output shaft. Consists of.

入力軸１２には入力レバー１４が固定され、入力レバー１４は先端を軸方向にＬ字型に屈曲している。また入力軸１２には軸部１２ａが一体に形成されている。入力軸１２には、モータなどを用いたロータリアクチュエータから例えば２ＷＤから４ＷＤに切り替える際に、矢印で示す右回りの回転を入力してシフト操作を行わせ、シフト後にあっては、破線の矢印のように逆方向となる左回りの回転により２ＷＤから４ＷＤに切替える。   An input lever 14 is fixed to the input shaft 12, and the tip of the input lever 14 is bent in an L shape in the axial direction. The input shaft 12 is integrally formed with a shaft portion 12a. When the rotary actuator using a motor or the like is switched from 2WD to 4WD, for example, a clockwise rotation indicated by an arrow is input to the input shaft 12 to perform a shift operation. Thus, it is switched from 2WD to 4WD by counterclockwise rotation in the opposite direction.

入力軸１２と出力ドラム２２の間には、同軸上に第１渦巻きばね１６と第２渦巻きばね１８が隣接して配置される。第１渦巻きばね１６は、外周端に当接片１６ａを起立し、内周端には嵌合片１６ｂを起立している。第２渦巻きばね１８は、第１渦巻きばね１６に対し巻き方向が逆方向であり、内周端に嵌合片１８ｂを起立し、外周端に当接片１８ａを起立している。   Between the input shaft 12 and the output drum 22, a first spiral spring 16 and a second spiral spring 18 are disposed adjacent to each other on the same axis. The first spiral spring 16 has a contact piece 16a upright at the outer peripheral end and a fitting piece 16b upright at the inner peripheral end. The second spiral spring 18 has a winding direction opposite to that of the first spiral spring 16, and a fitting piece 18 b is erected at the inner peripheral end and a contact piece 18 a is erected at the outer peripheral end.

第１渦巻きばね１６と第２渦巻きばね１８は、ブッシュ部材２０により連接されて１本の渦巻きばねを構成する。ブッシュ部材２０はフランジ付の円筒部材であり、円筒部に軸方向の溝２０ａを形成している。ブッシュ部材２０の溝２０ａには、第１渦巻きばね１６の内周端の嵌合片１６ｂと第２渦巻きばね１８の内周端の嵌合片１８ｂが軸方向の嵌め込みにより嵌合し、第１渦巻きばね１６はブッシュ部材２０を介して第２渦巻きばね１８に連結される。   The first spiral spring 16 and the second spiral spring 18 are connected by a bush member 20 to constitute one spiral spring. The bush member 20 is a cylindrical member with a flange, and an axial groove 20a is formed in the cylindrical portion. In the groove 20a of the bush member 20, the fitting piece 16b at the inner circumferential end of the first spiral spring 16 and the fitting piece 18b at the inner circumferential end of the second spiral spring 18 are fitted by axial fitting, and the first The spiral spring 16 is connected to the second spiral spring 18 via the bush member 20.

第１渦巻きばね１６の外周端に起立した当接片１６ａと第２渦巻きばね１８の外周端に起立した当接片１８ａとの間には、出力ドラム２２内に対する組込み状態で入力レバー１４が位置し、入力軸１２を矢印で示す右方向に回転すると、入力レバー１４の側端が当接片１６ａに当接し、第１渦巻きばね１６を外側から右回りに巻き込む。また逆に入力軸１２を左方向に回転すると、入力レバー１４の側端が当接片１８ａに当接し、第２渦巻きばね１８を外側から左回りに巻き込む。   The input lever 14 is positioned between the contact piece 16a erected at the outer peripheral end of the first spiral spring 16 and the contact piece 18a erected at the outer peripheral end of the second spiral spring 18 in the assembled state in the output drum 22. When the input shaft 12 is rotated in the right direction indicated by the arrow, the side end of the input lever 14 comes into contact with the contact piece 16a, and the first spiral spring 16 is wound clockwise from the outside. Conversely, when the input shaft 12 is rotated counterclockwise, the side end of the input lever 14 comes into contact with the contact piece 18a, and the second spiral spring 18 is wound counterclockwise from the outside.

第２渦巻きばね１８の外周端の当接片１８ａは、出力ドラム２２の開放側外周に押込み成形により形成したカム突起２４の左側に位置し、入力軸１２による入力レバー１４、第１渦巻きばね１６及びブッシュ部材２０を介した第２渦巻きばね１８の内周端の嵌合片１８ｂの右回りの巻込みに対し、外周端の当接片１８ｂがカム突起２４の左側に当接し、出力ドラム２２に右回りの回転力を加える。   The contact piece 18a at the outer peripheral end of the second spiral spring 18 is located on the left side of the cam projection 24 formed by pressing on the outer periphery of the output drum 22, and the input lever 14 by the input shaft 12 and the first spiral spring 16 are located. In addition, with respect to the clockwise winding of the fitting piece 18b at the inner peripheral end of the second spiral spring 18 via the bush member 20, the contact piece 18b at the outer peripheral end comes into contact with the left side of the cam projection 24, and the output drum 22 Apply clockwise torque to.

また第１渦巻きばね１６の外周端の当接片１６ａは、出力ドラム２２のカム突起２４の右側に位置し、入力軸１２による入力レバー１４、第２渦巻きばね１８及びブッシュ部材２０を介した第１渦巻きばね１８の内周端の嵌合片１６ｂの左回りの巻込みに対し、外周端の当接片１６ａがカム突起２４に右側に当接し、出力ドラム２２に左回りの回転力を加える。   The contact piece 16a at the outer peripheral end of the first spiral spring 16 is located on the right side of the cam projection 24 of the output drum 22, and the first lever spring 14, the second spiral spring 18 and the bush member 20 via the input shaft 12 are interposed. In response to the counterclockwise winding of the fitting piece 16b at the inner peripheral end of the single spiral spring 18, the outer peripheral end contact piece 16a comes into contact with the cam protrusion 24 on the right side and applies a counterclockwise rotational force to the output drum 22. .

出力ドラム２２の端面には軸穴２２ａが形成されており、軸穴２２ａに対し入力軸１２の軸部１２ａが、ブッシュ部材２０、第１渦巻きばね１６及び第２渦巻きばね１８を挿入した状態で嵌め込まれ、これによって待ち機構１０が出力ドラム２２の内部に組付け配置されることになる。   A shaft hole 22a is formed in the end surface of the output drum 22, and the shaft portion 12a of the input shaft 12 is inserted into the shaft hole 22a with the bush member 20, the first spiral spring 16 and the second spiral spring 18 inserted. Thus, the waiting mechanism 10 is assembled and arranged inside the output drum 22.

なお、出力ドラム２２のは端面外側にはカム溝が半径方向に形成され、このカム溝にシフトピンが嵌合し、出力ドラム２２の回転をシフトピンの直線運動に変換してカップリングスリーブをシフト方向に移動させる。   A cam groove is formed in the radial direction on the outer end face of the output drum 22, and a shift pin is fitted in the cam groove, and the rotation of the output drum 22 is converted into a linear motion of the shift pin to shift the coupling sleeve in the shift direction. Move to.

図２は本実施形態における入力レバー、第１渦巻きばね１６、第２渦巻きばね１８及び出力ドラム２２の連結関係を、出力ドラム２２に形成したカム突起２４の部分について取り出して示した説明図である。   FIG. 2 is an explanatory view showing the connection relationship between the input lever, the first spiral spring 16, the second spiral spring 18, and the output drum 22 in the present embodiment, with respect to the cam protrusion 24 formed on the output drum 22. .

図２において、本実施形態の待ち機構の組立状態で、出力ドラム２２の内部に位置する第１渦巻きばね１６の当接片１６ａと第２渦巻きばね１８の当接片１８ｂの間に、入力軸１２に固定している入力レバー１４のＬ字型に屈曲した先端部分が位置している。また、この組立状態で第２渦巻きばね１８の当接片１８ａは、出力ドラム２２に形成したカム突起２４の左側に当接している。また第１渦巻きばね１６の当接片１６ａは、出力ドラム２２に形成したカム突起２４の右側に当接している。   In FIG. 2, in the assembled state of the waiting mechanism of the present embodiment, the input shaft is interposed between the contact piece 16 a of the first spiral spring 16 and the contact piece 18 b of the second spiral spring 18 located inside the output drum 22. 12 is located at the tip of the input lever 14 fixed to the L-shaped bent portion. In this assembled state, the contact piece 18 a of the second spiral spring 18 is in contact with the left side of the cam projection 24 formed on the output drum 22. The contact piece 16 a of the first spiral spring 16 is in contact with the right side of the cam protrusion 24 formed on the output drum 22.

次に図１及び図２を参照して、本実施形態による待ち機構の動作を説明する。図１において、例えばトランスファーを２ＷＤから４ＷＤに切り替える際には、図示しないロータリアクチュエータにより入力軸１２を矢印で示す右回りに所定角度回転させる。   Next, the operation of the waiting mechanism according to the present embodiment will be described with reference to FIGS. In FIG. 1, for example, when switching the transfer from 2WD to 4WD, the input shaft 12 is rotated clockwise by a predetermined angle as indicated by an arrow by a rotary actuator (not shown).

このとき出力ドラム２２に続いて設けられる図示しないトランスファーのシフト機構において、内周にスプラインを切ったカップリングスリーブがシフト側のギアと位相が合っていなかった場合、カップリングスリーブは動くことができず、入力軸１２の回転に対し出力ドラム２２側は固定状態となる。   At this time, in a transfer shift mechanism (not shown) provided subsequent to the output drum 22, if the coupling sleeve having a spline cut on the inner periphery is not in phase with the gear on the shift side, the coupling sleeve can move. First, the output drum 22 side is fixed with respect to the rotation of the input shaft 12.

このため入力軸１２の右回転により入力レバー１４が図２の第１渦巻きばね１６の外周に対する初期位置から右回りに回転することで当接片１６ａを回転し、これによって第１渦巻きばね１６は外周側から右回りに巻き込まれる。第１渦巻きばね１６が入力レバー１４により巻き込まれると、この巻込みによる反力は内周端の嵌合片１６ｂからブッシュ部材２０を介して第２渦巻きばね１８の嵌合片１８ｂに伝わり、内周の嵌合片１８ｂが右回りに回転することで、第２渦巻きばね１８は内側から右回りに巻き込まれる。   Therefore, when the input shaft 12 rotates clockwise, the input lever 14 rotates clockwise from the initial position with respect to the outer periphery of the first spiral spring 16 in FIG. 2 to rotate the contact piece 16a. It is wound clockwise from the outer peripheral side. When the first spiral spring 16 is wound by the input lever 14, the reaction force due to the winding is transmitted from the inner peripheral end fitting piece 16 b to the fitting piece 18 b of the second spiral spring 18 through the bush member 20. As the circumferential fitting piece 18b rotates clockwise, the second spiral spring 18 is wound clockwise from the inside.

このとき出力ドラム２２は固定状態にあるため、出力ドラム２２のカム突起２４に当接片１８ａが当たって第２渦巻きばね１８の外周端は動くことができず、当接片１８ａを固定部として、第２渦巻きばね１８及びブッシュ部材２０で連結された第１渦巻きばね１６が１本の渦巻きばねとして、入力軸１２の回転に伴って巻き込まれる。   At this time, since the output drum 22 is in a fixed state, the contact piece 18a hits the cam protrusion 24 of the output drum 22 and the outer peripheral end of the second spiral spring 18 cannot move, and the contact piece 18a is used as a fixed portion. The first spiral spring 16 connected by the second spiral spring 18 and the bush member 20 is wound as the spiral of the input shaft 12 as one spiral spring.

入力軸１２の回転が停止すると、この状態でブッシュ部材２０で連結された第１渦巻きばね１６と第２渦巻きばね１８の巻込みによる駆動力（ばね開放力）で決まる待ちトルクが、第２渦巻きばね１８の当接片１８ａのカム突起２４に対する当接で出力ドラム２２に右回りに加わった待ち状態となる。   When the rotation of the input shaft 12 stops, the waiting torque determined by the driving force (spring opening force) due to the winding of the first spiral spring 16 and the second spiral spring 18 connected by the bush member 20 in this state is the second spiral. When the contact piece 18a of the spring 18 comes into contact with the cam projection 24, the output drum 22 is put in a waiting state in which it is added clockwise.

その後、車両が動き始めるなどによりカップリングスリーブのスプラインとシフト先のギアの位相が一致すると、第１渦巻きばね１６と第２渦巻きばね１８の巻込みによる待ちトルクを受けて出力ドラム２２が右回りに回転し、これによりカップリングスリーブをシフト先のギアに噛み込ませ、２ＷＤから４ＷＤへの切替えを行う。   Thereafter, when the phases of the spline of the coupling sleeve and the gear to be shifted coincide with each other, for example, when the vehicle starts to move, the output drum 22 rotates clockwise in response to the waiting torque due to the first spiral spring 16 and the second spiral spring 18 being caught. Thus, the coupling sleeve is engaged with the gear of the shift destination, and switching from 2WD to 4WD is performed.

一方、４ＷＤの状態から２ＷＤに切り替える場合には、入力軸１２を破線の矢印で示すように左回りに所定角度回転して制御原点に戻す。このときトランスファーのシフト側のギアとカップリングスリーブのスプラインの位相がずれることで固く噛み合っていたとすると、入力軸１２を左回転させても出力ドラム２２は動くことができず、入力軸１２の左回転に伴い入力レバー１４が左回転する。   On the other hand, when switching from the 4WD state to the 2WD state, the input shaft 12 is rotated counterclockwise by a predetermined angle as indicated by the dashed arrow and returned to the control origin. At this time, assuming that the gear on the shift side of the transfer and the spline of the coupling sleeve are out of phase, the output drum 22 cannot move even if the input shaft 12 is rotated counterclockwise. With the rotation, the input lever 14 rotates counterclockwise.

このため図２に示すように入力レバー１４の左側が第２渦巻きばね１８の当接片１８ａに当たって、第２渦巻きばね１８の外周側を左回転して巻き込む。この第２渦巻きばね１８の外周の当接片１８ａの左回転によるばねの巻込みに伴い、第２渦巻きばね１８の左回転は嵌合片１８ｂを溝２０ａに嵌合したブッシュ部材２０を介して第１渦巻きばね１６に伝えられる。   Therefore, as shown in FIG. 2, the left side of the input lever 14 hits the contact piece 18 a of the second spiral spring 18, and the outer peripheral side of the second spiral spring 18 is rotated counterclockwise. Along with the winding of the spring by the left rotation of the contact piece 18a on the outer periphery of the second spiral spring 18, the left rotation of the second spiral spring 18 is via the bush member 20 having the fitting piece 18b fitted in the groove 20a. It is transmitted to the first spiral spring 16.

このため第２渦巻きばね１８の外周側の左回転に伴う巻込みに伴い、第１渦巻きばね１６は内周側の嵌合片１６ｂの左回転により内周側から巻き込まれる。これにより図２に示すように、第１渦巻きばね１６の外周端の当接片１６ａがカム突起２４の右側のカム面に当接して固定状態となる。   For this reason, the first spiral spring 16 is wound from the inner peripheral side by the left rotation of the inner peripheral side fitting piece 16b along with the winding of the second spiral spring 18 due to the left rotation on the outer peripheral side. As a result, as shown in FIG. 2, the contact piece 16 a at the outer peripheral end of the first spiral spring 16 comes into contact with the cam surface on the right side of the cam protrusion 24 to be in a fixed state.

このように４Ｗから２Ｗに戻す際の入力軸１２の左回転に伴いブッシュ部材２０で連結された第１渦巻きばね１６と第２渦巻きばね１８は、当接片１８ａが左回転され且つ当接片１６ａを出力ドラム２２のカム突起２４に対する当接で固定側となることで、１本の渦巻きばねとして左回りに巻き込まれ、ばね巻込みにより発生した待ちトルクを出力ドラム２２に加えることになる。   As described above, the first spiral spring 16 and the second spiral spring 18 connected by the bush member 20 with the left rotation of the input shaft 12 when returning from 4 W to 2 W have the contact piece 18 a rotated counterclockwise and the contact piece. When 16a is brought into contact with the cam projection 24 of the output drum 22 to become the fixed side, it is wound counterclockwise as a single spiral spring, and the waiting torque generated by the spring winding is applied to the output drum 22.

その後、車両の動きなどによりカップリングスリーブとシフトしていたギア側との位相が噛み合うと、待ちトルクを受けている出力ドラム２２の左回転によりカップリングスリーブがシフト先のギアから離脱して、４ＷＤから２ＷＤに切り替えることができる。   After that, when the phase of the coupling sleeve and the shifted gear side meshes due to the movement of the vehicle or the like, the coupling sleeve is detached from the shift destination gear by the left rotation of the output drum 22 receiving the waiting torque, It is possible to switch from 4WD to 2WD.

このように本実施形態の待ち機構にあっては、図４の従来例と対比すると、渦巻きばねが１つ増加することになるが、２つの渦巻きばねを連結するブッシュ部材２０は従来のブッシュ部材１０６のように連結レバー１１８を設けるといった複雑な構造とする必要がなく、円筒状の部材の外周に溝２０ａを形成するだけでよいことから、例えば板金加工などにより簡単に、特に精度を必要とすることなく作ることができ、部品コストを大幅に低減できる。   Thus, in the waiting mechanism of the present embodiment, the spiral spring is increased by one as compared with the conventional example of FIG. 4, but the bush member 20 connecting the two spiral springs is a conventional bush member. It is not necessary to provide a complicated structure such as providing the connecting lever 118 as in 106, and it is only necessary to form the groove 20a on the outer periphery of the cylindrical member. The cost of parts can be greatly reduced.

またブッシュ部材２０により２本の渦巻きばねの内周端を連結して１本つの渦巻きばねとしており、これによって従来と同じ渦巻きばねを２本使用したとすると、ばね外形を大きくすることなく巻き数を２倍に増やすことができる。   Further, the inner peripheral ends of the two spiral springs are connected by the bush member 20 to form one spiral spring. Thus, if two spiral springs that are the same as conventional ones are used, the number of turns is not increased without increasing the spring outer shape. Can be doubled.

このように巻き数が多くとれることで、ばね定数を抑えて回転角を大きくとりたい場合、渦巻きばねの外形を従来の１本の渦巻きばねの場合には２倍に増やさなければならないものを、本実施形態にあっては、その半分のサイズとでき、渦巻きばねの設置スペースを低減し、待ち機構１０における配置等の設計の自由度を大幅に高めることができる。   In this way, if the number of turns can be increased and the spring constant is to be suppressed and the rotation angle is increased, the spiral spring must be doubled in the case of a single spiral spring. In the present embodiment, the size can be reduced to half of that, the space for installing the spiral spring can be reduced, and the degree of freedom in design such as the arrangement in the waiting mechanism 10 can be greatly increased.

図３は本実施形態の待ち機構を組み込んだトランスファーの断面図であり、バギーカーに使用されるトランスファーを例にとっている。   FIG. 3 is a cross-sectional view of a transfer incorporating the waiting mechanism of this embodiment, taking a transfer used for a buggy car as an example.

図３において、本実施形態のトランスファーは、待ち機構１０に対しロータリアクチュエータ２６を駆動源として設け、ロータリアクチュエータ２６は例えばモータを内蔵しており、モータの出力回転をギア減速して入力軸１２に伝達している。   In FIG. 3, the transfer according to the present embodiment is provided with a rotary actuator 26 as a drive source for the waiting mechanism 10, and the rotary actuator 26 has a built-in motor, for example, to reduce the output rotation of the motor to the input shaft 12 by gear reduction. Communicating.

待ち機構１０は入力軸１２と一体に入力レバー１４を備え、入力軸１２、入力レバー１４、及び図１の配置構造を持つ２本の渦巻きばねは出力ドラム２２内に組み込まれている。   The waiting mechanism 10 includes an input lever 14 integrally with the input shaft 12, and the input shaft 12, the input lever 14, and two spiral springs having the arrangement structure of FIG. 1 are incorporated in the output drum 22.

出力ドラム２２に対してはガイドロッド２８により軸方向に摺動自在なシフトフォーク３０が設けられており、シフトフォーク３０に設けたシフトピン２７が出力ドラム２２の端面のガイド溝に嵌め込まれ、出力ドラム２２の回転に伴いガイドロッド２８に沿ってシフトフォーク３０を軸方向に移動できるようにしている。   A shift fork 30 that is slidable in the axial direction by a guide rod 28 is provided for the output drum 22, and a shift pin 27 provided on the shift fork 30 is fitted into a guide groove on an end surface of the output drum 22, The shift fork 30 can be moved in the axial direction along the guide rod 28 as the motor 22 rotates.

シフトフォーク３０は、入力駆動軸３８と出力駆動軸４０の突き合せ部分に形成したギア３４，３６に対し、内周の軸穴スプラインを形成したカップリングスリーブ３２に連結されており、図示の状態でカップリングスリーブ３２は右側に移動してギア３４とギア３６を連結し、入力駆動軸３８の回転を出力駆動軸４０に伝える４ＷＤの切替状態となっている。   The shift fork 30 is connected to a coupling sleeve 32 formed with a shaft hole spline on the inner periphery with respect to gears 34, 36 formed at the abutting portion of the input drive shaft 38 and the output drive shaft 40, and is in the state shown in the figure. Thus, the coupling sleeve 32 moves to the right side, connects the gear 34 and the gear 36, and is in a 4WD switching state in which the rotation of the input drive shaft 38 is transmitted to the output drive shaft 40.

出力駆動軸４０のギア４１は、フロントデフ４２に設けた入力ギア４４に噛み合っている。入力ギア４４を一体に設けたギアケースの内部には、ベベルギア４６，４８、５０，５２が直交配置され、入力ギア４４のギアケースの回転に伴うベべルギア４６，４８の回転を直交配置されたベベルギア５０，５２に伝えることで差動回転を作り出し、ベベルギア５０，５２に連結されたフロント車軸５４、５６に駆動力を出力し、４Ｗの切替状態による４輪駆動による走行を行うようにしている。   A gear 41 of the output drive shaft 40 meshes with an input gear 44 provided on the front differential 42. Bevel gears 46, 48, 50, 52 are orthogonally arranged inside the gear case integrally provided with the input gear 44, and the rotation of the bevel gears 46, 48 along with the rotation of the gear case of the input gear 44 is orthogonally arranged. To the bevel gears 50 and 52 to produce differential rotation, output driving force to the front axles 54 and 56 connected to the bevel gears 50 and 52, and drive by four-wheel drive by switching state of 4W. Yes.

なお本実施形態はロータリアクチュエータで駆動されるバギーカー用のトランスファーにおける２Ｗと４Ｗの切替用の待ち機構を例に取るものであったが、ロータリアクチュエータで駆動されるシフト機構であれば適宜のトランスファーにつきそのまま適用することができる。   In this embodiment, a waiting mechanism for switching between 2 W and 4 W in a transfer for a buggy car driven by a rotary actuator is taken as an example. However, if the shift mechanism is driven by a rotary actuator, It can be applied as it is.

また上記の実施形態は、第１渦巻きばねと第２渦巻きばねについて、入力外側、連結内側、出力外側とする構成を例にとるものであったが、本発明はこれに限定されず、入力内側、連結外側、出力内側とする構成としても良い。   In the above-described embodiment, the first spiral spring and the second spiral spring are configured to have an input outer side, a connection inner side, and an output outer side, but the present invention is not limited to this. Further, it is possible to adopt a configuration in which the outside is connected and the inside is output.

また本発明は上記の実施形態に限定されず、その目的を損なうことのない適宜の変形を含み、更に上記の実施形態に示した数値による限定は受けない。
The present invention is not limited to the above-described embodiment, includes appropriate modifications that do not impair the object, and is not limited by the numerical values shown in the above-described embodiment.

本発明による待ち機構の実施形態を示した組立分解図Assembly exploded view showing an embodiment of a waiting mechanism according to the present invention 本実施形態における入力レバー、第１渦巻きばね、第２渦巻きばね及び出力ドラムの連結関係を取出して示した説明図Explanatory drawing which extracted and showed the connection relationship of the input lever in this embodiment, the 1st spiral spring, the 2nd spiral spring, and the output drum. 本実施形態の待ち機構を組み込んだトランスファーの断面図Cross-sectional view of a transfer incorporating the waiting mechanism of this embodiment 従来の待ち機構の説明図Explanatory drawing of conventional waiting mechanism

符号の説明Explanation of symbols

１０：待ち機構
１２：入力軸
１２ａ：軸部
１４：入力レバー
１６：第１渦巻きばね
１６ａ，１８ａ：当接片
１６ｂ，１８ｂ：嵌合片
１８：第２渦巻きばね
２０：ブッシュ部材
２２：出力ドラム
２２ａ：軸穴
２４：カム突起
２６：ロータリアクチュエータ
２７：シフトピン
２８：ガイドロッド
３０：シフトフォーク
３２：カップリングスリーブ
３４，３６：ギア
３８：入力駆動軸
４０：出力駆動軸
４２：フロントデフ
４４：入力ギア
４６，４８，５０，５２：ベベルギア
５４，５６：フロント車軸 10: Waiting mechanism 12: input shaft 12a: shaft portion 14: input lever 16: first spiral springs 16a, 18a: contact pieces 16b, 18b: fitting pieces 18: second spiral spring 20: bush member 22: output drum 22a: shaft hole 24: cam protrusion 26: rotary actuator 27: shift pin 28: guide rod 30: shift fork 32: coupling sleeve 34, 36: gear 38: input drive shaft 40: output drive shaft 42: front differential 44: input Gears 46, 48, 50, 52: Bevel gears 54, 56: Front axle

Claims (5)

回転駆動される入力軸と、所定の角度回転することによってシフトを行う出力軸との間に設けられた待ち機構に於いて、
前記入力軸及び出力軸と同軸に配置された第１渦巻きばねと、
前記第１渦巻きばねと同軸に前記出力軸側に隣接配置された逆巻きの第２渦巻きばねと、
前記入力軸の一方向の回転を前記第１渦巻きばねの一方の周端に加えて巻き込むと共に前記入力軸の逆方向の回転を前記第２渦巻きばねの一方の周端に加えて巻き込む入力回転伝達部材と、
前記第１渦巻きばねの他方の周端と前記第２渦巻きばねの他方の周端を連結し、前記第１渦巻きばねと第２渦巻きばねのいずれか一方の巻き込みによる回転を他方に伝達して巻き込む連結部材と、
前記第２渦巻きばねの一方の周端又は第１渦巻きばねの一方の周端の当接を受け、ばね巻き込みによる回転を取出して前記出力軸に伝達する出力回転伝達部材と、
を備えたことを特徴とする待ち機構。
In a waiting mechanism provided between an input shaft that is rotationally driven and an output shaft that shifts by rotating by a predetermined angle,
A first spiral spring disposed coaxially with the input shaft and the output shaft;
A reversely wound second spiral spring disposed adjacent to the output shaft side coaxially with the first spiral spring;
An input rotation transmission in which a rotation in one direction of the input shaft is applied to one peripheral end of the first spiral spring and the rotation is applied in a reverse direction to the one peripheral end of the second spiral spring. Members,
The other peripheral end of the first spiral spring is connected to the other peripheral end of the second spiral spring, and the rotation of one of the first spiral spring and the second spiral spring is transmitted to the other to be wound. A connecting member;
An output rotation transmitting member that receives abutment of one peripheral end of the second spiral spring or one peripheral end of the first spiral spring, extracts the rotation due to the spring winding, and transmits the rotation to the output shaft;
A waiting mechanism characterized by comprising:
回転駆動される入力軸と、所定の角度回転することによってシフトを行う出力軸との間に設けられた待ち機構に於いて、
前記入力軸及び出力軸と同軸に配置された第１渦巻きばねと、
前記第１渦巻きばねと同軸に前記出力軸側に隣接配置された逆巻きの第２渦巻きばねと、
前記入力軸の一方向の回転を前記第１渦巻きばねの外周端に加えて巻き込むと共に前記入力軸の逆方向の回転を前記第２渦巻きばねの外周端に加えて巻き込む入力回転伝達部材と、
前記第１渦巻きばねの内周端と前記第２渦巻きばねの内周端を連結し、前記第１渦巻きばねと第２渦巻きばねのいずれか一方の巻き込みによる回転を他方に伝達して巻き込む連結部材と、
前記第２渦巻きばねの外周端又は第１渦巻きばねの外周端の当接を受け、ばね巻き込みによる回転を取出して前記出力軸に伝達する出力回転伝達部材と、
を備えたことを特徴とする待ち機構。
In a waiting mechanism provided between an input shaft that is rotationally driven and an output shaft that shifts by rotating by a predetermined angle,
A first spiral spring disposed coaxially with the input shaft and the output shaft;
A reversely wound second spiral spring disposed adjacent to the output shaft side coaxially with the first spiral spring;
An input rotation transmission member that winds by applying rotation in one direction of the input shaft to the outer peripheral end of the first spiral spring and winding the rotation in the opposite direction of the input shaft to the outer peripheral end of the second spiral spring;
A connecting member that connects the inner peripheral end of the first spiral spring and the inner peripheral end of the second spiral spring, and transmits the rotation of one of the first spiral spring and the second spiral spring to the other to be wound. When,
An output rotation transmitting member that receives contact with the outer peripheral end of the second spiral spring or the outer peripheral end of the first spiral spring, extracts the rotation by the spring winding, and transmits the rotation to the output shaft;
A waiting mechanism characterized by comprising:
回転駆動される入力軸と、所定の角度回転することによってシフトを行う出力軸との間に設けられた待ち機構に於いて、
前記入力軸及び出力軸と同軸に配置された第１渦巻きばねと、
前記第１渦巻きばねと同軸に前記出力軸側に隣接配置された逆巻きの第２渦巻きばねと、
前記入力軸の一方向の回転を前記第１渦巻きばねの内周端に加えて巻き込むと共に前記入力軸の逆方向の回転を前記第２渦巻きばねの内周端に加えて巻き込む入力回転伝達部材と、
前記第１渦巻きばねの外周端と前記第２渦巻きばねの外周端を連結し、前記第１渦巻きばねと第２渦巻きばねのいずれか一方の巻き込みによる回転を他方に伝達して巻き込む連結部材と、
前記第２渦巻きばねの内周端又は第１渦巻きばねの内周端の当接を受け、ばね巻き込みによる回転を取出して前記出力軸に伝達する出力回転伝達部材と、
を備えたことを特徴とする待ち機構。
In a waiting mechanism provided between an input shaft that is rotationally driven and an output shaft that shifts by rotating by a predetermined angle,
A first spiral spring disposed coaxially with the input shaft and the output shaft;
A reversely wound second spiral spring disposed adjacent to the output shaft side coaxially with the first spiral spring;
An input rotation transmission member which winds by applying a rotation in one direction of the input shaft to the inner peripheral end of the first spiral spring and winding the reverse rotation of the input shaft to the inner peripheral end of the second spiral spring; ,
A connecting member that connects the outer peripheral end of the first spiral spring and the outer peripheral end of the second spiral spring, transmits the rotation of one of the first spiral spring and the second spiral spring to the other, and winds it in;
An output rotation transmitting member that receives the contact of the inner peripheral end of the second spiral spring or the inner peripheral end of the first spiral spring, extracts the rotation due to the spring winding, and transmits the rotation to the output shaft;
A waiting mechanism characterized by comprising:
回転駆動される入力軸と、所定の角度回転することによってシフトを行う出力軸との間に設けられた待ち機構に於いて、
前記入力軸及び出力軸と同軸に配置され、外周端に当接片を起立すると共に内周端に嵌合片を起立した第１渦巻きばねと、
前記第１渦巻きばねと同軸に前記出力軸側に隣接配置され、内周端に嵌合片を起立すると共に外周端に当接片を起立した逆巻きの第２渦巻きばねと、
前記入力軸に固定され、Ｌ字型に屈曲したレバー先端を前記第１渦巻きばねの外周端の当接片と前記第２渦巻きばねの外周端の当接片との間に位置し、前記入力軸の一方向の回転により前記第１渦巻きばねの外周端に当接して巻き込むと共に前記入力軸の逆方向の回転により前記第２渦巻きばねの外周端に当接して巻き込む入力レバーと、
前記第１渦巻きばねの内周端の嵌合片と前記第２渦巻きばねの内周端の嵌合片を外周軸方向の溝に嵌合して第１渦巻きばねと第２渦巻きばねのいずれか一方の巻き込みによる回転を他方に伝達して巻き込むブッシュ部材と、
前記第２渦巻きばねの外周端の当接片の当接又は第１渦巻きばねの外周端の当接片の当接を受け、ばね巻きこみによる回転を前記出力軸に伝達する前記出力軸に形成されたカム突起と、
を備えたことを特徴とする待ち機構。
In a waiting mechanism provided between an input shaft that is rotationally driven and an output shaft that shifts by rotating by a predetermined angle,
A first spiral spring which is arranged coaxially with the input shaft and the output shaft and has a contact piece standing at the outer peripheral end and a fitting piece rising at the inner peripheral end;
A reversely wound second spiral spring that is arranged adjacent to the output shaft side coaxially with the first spiral spring, and has a fitting piece upright at the inner peripheral end and a contact piece upright at the outer peripheral end;
The lever tip fixed to the input shaft and bent in an L shape is located between the contact piece of the outer peripheral end of the first spiral spring and the contact piece of the outer peripheral end of the second spiral spring, and the input An input lever that contacts and winds around the outer peripheral end of the first spiral spring by rotating in one direction of the shaft and winds in contact with the outer peripheral end of the second spiral spring by rotating in the reverse direction of the input shaft;
Either the first spiral spring or the second spiral spring is formed by fitting the fitting piece at the inner circumferential end of the first spiral spring and the fitting piece at the inner circumferential end of the second spiral spring into the groove in the outer peripheral axial direction. A bush member for transmitting the rotation of one winding to the other and winding it,
It is formed on the output shaft that receives the contact of the contact piece of the outer peripheral end of the second spiral spring or the contact piece of the outer peripheral end of the first spiral spring and transmits the rotation caused by the spring winding to the output shaft. Cam protrusion,
A waiting mechanism characterized by comprising:
回転駆動される入力軸と、所定の角度回転することによってシフトを行う出力軸との間に設けられた待ち機構に於いて、
前記入力軸及び出力軸と同軸に配置され、内周端に当接片を起立すると共に外周端に嵌合片を起立した第１渦巻きばねと、
前記第１渦巻きばねと同軸に前記出力軸側に隣接配置され、外周端に嵌合片を起立すると共に内周端に当接片を起立した逆巻きの第２渦巻きばねと、
前記入力軸に固定され、Ｌ字型に屈曲したレバー先端を前記第１渦巻きばねの内周端の当接片と前記第２渦巻きばねの内周端の当接片との間に位置し、前記入力軸の一方向の回転により前記第１渦巻きばねの内周端に当接して巻き込むと共に前記入力軸の逆方向の回転により前記第２渦巻きばねの内周端に当接して巻き込む入力レバーと、
前記第１渦巻きばねの外周端の嵌合片と前記第２渦巻きばねの外周端の嵌合片を内周軸方向の溝に嵌合して第１渦巻きばねと第２渦巻きばねのいずれか一方の巻き込みによる回転を他方に伝達して巻き込むブッシュ部材と、
前記第２渦巻きばねの内周端の当接片の当接又は第１渦巻きばねの内周端の当接片の当接を受け、ばね巻きこみによる回転を前記出力軸に伝達する前記出力軸に形成されたカム突起と、
を備えたことを特徴とする待ち機構。 In a waiting mechanism provided between an input shaft that is rotationally driven and an output shaft that shifts by rotating by a predetermined angle,
A first spiral spring that is arranged coaxially with the input shaft and the output shaft, and has a contact piece upright at an inner peripheral end and a fitting piece upright at an outer peripheral end;
A second spiral spring of reverse winding, which is disposed adjacent to the output shaft side coaxially with the first spiral spring, and has a fitting piece standing on the outer peripheral end and a contact piece rising on the inner peripheral end;
The lever tip fixed to the input shaft and bent in an L shape is located between the contact piece of the inner peripheral end of the first spiral spring and the contact piece of the inner peripheral end of the second spiral spring, An input lever that contacts and winds with the inner circumferential end of the first spiral spring by rotating in one direction of the input shaft and winds in contact with the inner circumferential end of the second spiral spring by rotating in the reverse direction of the input shaft; ,
One of the first spiral spring and the second spiral spring is formed by fitting the fitting piece at the outer peripheral end of the first spiral spring and the fitting piece at the outer peripheral end of the second spiral spring into the groove in the inner peripheral axial direction. A bushing member that transmits the rotation by entrainment to the other and entrains,
The output shaft that receives the contact of the contact piece of the inner peripheral end of the second spiral spring or the contact piece of the inner peripheral end of the first spiral spring and transmits the rotation caused by the spring winding to the output shaft. Formed cam projections,
A waiting mechanism characterized by comprising:

Images