JP2014023325A

JP2014023325A - Motor actuator

Info

Publication number: JP2014023325A
Application number: JP2012161073A
Authority: JP
Inventors: Akio Iwami; 昭夫石水
Original assignee: Nidec Sankyo Corp
Current assignee: Nidec Instruments Corp
Priority date: 2012-07-20
Filing date: 2012-07-20
Publication date: 2014-02-03
Anticipated expiration: 2032-07-20
Also published as: JP5939915B2

Abstract

PROBLEM TO BE SOLVED: To provide a motor actuator capable of suppressing a device from being large-sized and reducing manufacturing costs.SOLUTION: There is provided a motor actuator 1 including an output unit 20 which has an output shaft 213 and a cam part 222, a circuit board 30 on which a terminal-side conductive pattern 31 and power supply-side conductive patterns 321, 322 are formed, operating contact members 41, 42 which each have one end connected electrically to one conductive pattern and the other end brought into contact with the cam part 222, and fixed contact members 51, 52 which each have one end connected electrically to the other conductive pattern and the other end arranged at a position opposite the other end of the operating contact member 41, 42, and contact or leave the operating contact members 41, 42 as the operating contact members 41, 42 vary in elastic deformation quantity by the cam part 222, two pairs of operating contact members 41, 42 and fixed contact members 51, 52 being provided in plane symmetry about a plane P containing the center axis of rotation of the cam part 222.

Description

本発明は、モータの動力を駆動対象物に伝達する構成を備えたモータアクチュエータに関する。 The present invention relates to a motor actuator having a configuration for transmitting power of a motor to an object to be driven.

モータを駆動源とするモータアクチュエータとして下記特許文献１に記載のものが知られている。特許文献１に記載のモータアクチュエータは、モータの駆動、停止を切り替えるための一対の接点部材（端子２２、２３）を備える。この一対の接点部材は、カムの回転により、接触、非接触状態が切り替わる。一対の接点部材が接触状態にあるときはモータへの給電が実行され、非接触状態にあるときにはモータへの給電が停止される。 As a motor actuator using a motor as a drive source, one described in Patent Document 1 below is known. The motor actuator described in Patent Document 1 includes a pair of contact members (terminals 22 and 23) for switching between driving and stopping of the motor. The pair of contact members are switched between a contact state and a non-contact state by the rotation of the cam. When the pair of contact members are in a contact state, power supply to the motor is executed, and when the pair of contact members is in a non-contact state, power supply to the motor is stopped.

特開２００４−１０４９７０号公報JP 2004-104970 A

上記特許文献１に記載のように、モータの駆動、停止を切り替える接点部材を設けると、この接点部材によって装置が大型化してしまうという問題がある。また、このような接点部材の製造コストの低減が求められている。 As described in Patent Document 1, when a contact member for switching between driving and stopping of the motor is provided, there is a problem that the size of the device is increased by the contact member. Moreover, reduction of the manufacturing cost of such a contact member is calculated | required.

上記問題に鑑みて、本発明が解決しようとする課題は、モータへの給電の実行、停止を切り替える接点部材による装置の大型化の抑制、および接点部材の製造コストの低減が可能なモータアクチュエータを提供することにある。 In view of the above problems, the problem to be solved by the present invention is to provide a motor actuator capable of suppressing the enlargement of the apparatus by the contact member that switches between the execution of power supply to the motor and the stop, and the manufacturing cost of the contact member. It is to provide.

上記課題を解決するために本発明にかかるモータアクチュエータは、電力供給用の入力端子を有するモータと、このモータの動力により回転する、駆動対象物に連繋される出力軸およびカム部を有する出力ユニットと、前記モータの入力端子の一つに電気的に接続される端子側導電パターン、および電源と電気的に接続される電源側導電パターンが形成された回路基板と、一端が前記端子側導電パターンおよび前記電源側導電パターンの一方に電気的に接続されるとともに、他端が前記カム部に接触する作動接点部材と、一端が前記端子側導電パターンおよび前記電源側導電パターンの他方に電気的に接続されるとともに、他端が前記作動接点部材の他端に対向する位置に配され、前記カム部に接触する前記作動接点部材の弾性変形量が前記カム部の回転によって変化することにより、前記作動接点部材と接触状態または非接触状態となる固定接点部材と、を備え、前記作動接点部材および前記固定接点部材は、前記カム部の回転中心軸を含む面を対称面として面対称となるように二組設けられていることを要旨とする。 In order to solve the above-described problems, a motor actuator according to the present invention includes a motor having an input terminal for supplying power, an output unit that is rotated by the power of the motor, and has an output shaft and a cam portion that are linked to a driven object. A circuit board on which a terminal-side conductive pattern electrically connected to one of the input terminals of the motor, a power-side conductive pattern electrically connected to a power source, and one end of the terminal-side conductive pattern are formed And an operating contact member that is electrically connected to one of the power supply side conductive patterns and has the other end in contact with the cam portion, and one end electrically connected to the other of the terminal side conductive pattern and the power supply side conductive pattern. The other end of the operating contact member is connected to the other end of the operating contact member, and the elastic deformation amount of the operating contact member contacting the cam portion is A fixed contact member that is brought into contact or non-contact with the operating contact member by changing the rotation of the support member, and the operating contact member and the fixed contact member have a rotation center axis of the cam portion. The gist is that two sets are provided so as to be plane-symmetric with respect to the plane to be included.

上記モータアクチュエータによれば、モータと電源とを繋ぐ電気的配線の一部が、回路基板に形成される導電パターン（端子側導電パターンおよび電源側導電パターン）によって構成されるため、接点部材が占めるスペースを従来よりも小さくすることができ、装置の小型化に資する。また、本発明にかかるモータアクチュエータは、モータへの給電の実行、停止を切り替える作動接点部材および固定接点部材が二組設けられるものであるところ、モータと電源とを繋ぐ電気的配線の一部が回路基板の導電パターンによって形成されることを巧みに利用し、これら接点部材が面対称となるように構成したものである。つまり、一方の作動接点部材と他方の作動接点部材が同形状となり、一方の固定接点部材と他方の固定接点部材が同形状となるから、接点部材の共通化ができて製造コストや管理コストの低減に資する。 According to the motor actuator described above, a part of the electrical wiring connecting the motor and the power source is constituted by the conductive pattern (terminal side conductive pattern and power source side conductive pattern) formed on the circuit board, and therefore the contact member occupies it. The space can be made smaller than before, contributing to the downsizing of the apparatus. Further, the motor actuator according to the present invention is provided with two sets of operating contact members and fixed contact members for switching between execution and stop of power supply to the motor, and part of the electrical wiring connecting the motor and the power source is provided. The contact member is configured to be plane-symmetric by skillfully using the conductive pattern formed on the circuit board. That is, one working contact member and the other working contact member have the same shape, and one fixed contact member and the other fixed contact member have the same shape. Contributes to reduction.

また、前記回路基板を支持するプレートをさらに備え、前記作動接点部材および前記固定接点部材の一端側の一部は、前記プレートに形成された接点部材固定部に固定されていればよい。 Moreover, the plate which further supports the said circuit board is further provided, and the one part of the one end side of the said operation contact member and the said fixed contact member should just be fixed to the contact member fixing | fixed part formed in the said plate.

このようにすれば、弾性変形する接点部材の支点となる箇所を確実にプレートに支持させることができる。 If it does in this way, the location used as the fulcrum of the contact member which elastically deforms can be reliably supported by a plate.

また、前記回路基板には、前記作動接点部材および前記固定接点部材の一端が挿入される切り込みが形成され、この切り込みの幅方向両側にこれら接点部材を前記端子側導電パターンまたは前記電源側導電パターンに電気的に接続するためのランドが形成されていればよい。 Further, the circuit board is formed with notches into which one ends of the operating contact member and the fixed contact member are inserted, and these contact members are arranged on both sides of the notch in the width direction of the terminal side conductive pattern or the power source side conductive pattern. It is sufficient that a land for electrical connection is formed.

このように回路基板に切り込みが形成されていれば、接点部材固定部に接点部材を支持させた後、その上から回路基板を取り付けることができる。つまり、接点部材は、カム部によって弾性変形することでモータへの給電の実行、停止を切り替える部材であるためにその取付位置が重要となる部材であるところ、上記構成によれば、回路基板よりも先に接点部材を位置決めすることができるため、動作不良等が生じにくい。 If the notch is formed in the circuit board in this way, the contact board is supported by the contact member fixing portion, and then the circuit board can be attached from above. In other words, the contact member is a member that switches between execution and stop of power supply to the motor by elastic deformation by the cam portion, so that the attachment position is important. In addition, since the contact member can be positioned first, it is difficult to cause a malfunction or the like.

また、前記モータは二つの入力端子を備え、この入力端子間に前記モータの動力を前記出力ユニットまで伝達する歯車が設けられていればよい。 Moreover, the said motor is provided with two input terminals, and the gearwheel which transmits the motive power of the said motor to the said output unit should just be provided between these input terminals.

このように、モータと電源とを繋ぐ電気的配線の一部が回路基板に形成される導電パターンであれば、入力端子を大きく離して配置した上で、その間に歯車を設置することにより、装置の小型化を図ることができる。 In this way, if a part of the electrical wiring connecting the motor and the power source is a conductive pattern formed on the circuit board, the input terminal is arranged largely apart, and then the gear is installed between them. Can be miniaturized.

また、前記プレートには、前記回路基板を位置決めする位置決め部が設けられていればよい。 The plate may be provided with a positioning portion for positioning the circuit board.

このようにすれば、プレートに対し、回路基板および接点部材（の一端側の一部）の両方が位置決めされることになるため、回路基板と接点部材（の一端）の取付位置精度が高まり、半田付け等による電気的接続作業が容易になる。 In this way, since both the circuit board and the contact member (a part of one end thereof) are positioned with respect to the plate, the mounting position accuracy of the circuit board and the contact member (one end thereof) is increased. Electrical connection work such as soldering becomes easy.

また、前記出力ユニットは、前記出力軸を有し、前記モータの動力が伝達される出力部材と、前記カム部を有し、前記モータの動力が伝達された前記出力部材が回転することによって回転するカム部材と、を含み、前記出力部材と前記カム部材とは、周方向に遊びをもって係合していればよい。 The output unit includes the output shaft, includes an output member to which the power of the motor is transmitted, and the cam portion, and rotates when the output member to which the power of the motor is transmitted rotates. The output member and the cam member may be engaged with each other with play in the circumferential direction.

また、前記出力部材および前記カム部材の一方には、周方向に沿う凹部が形成される一方、他方には凹部の内側に入り込む周方向に沿う凸部が形成され、前記凹部の周方向の長さは、前記凸部の周方向の長さよりも長ければよい。 One of the output member and the cam member is formed with a concave portion along the circumferential direction, and the other is formed with a convex portion along the circumferential direction entering the inside of the concave portion, and the circumferential length of the concave portion. The length should just be longer than the length of the said convex part in the circumferential direction.

このように出力ユニットを、出力軸を有する出力部材と、カム部を有するカム部材という二つの部材で構成した上で、両者の係合が遊びをもった（ガタがある）ものとすれば、当該遊びの大きさ分、カム部材が出力部材とは別に自由に回転することができるため、カム部における作動接点部材と固定接点部材の接触と非接触が切り替わる位置に作動接点部材が接触したとき、当該作動接点部材の弾性力によってカム部材が独立して回転し、モータへの給電の停止が素早く実行される。 In this way, if the output unit is composed of two members, that is, an output member having an output shaft and a cam member having a cam portion, and the engagement between the two has play (there is play) Since the cam member can freely rotate separately from the output member by the amount of the play, when the operating contact member contacts the position where the contact and non-contact between the operating contact member and the fixed contact member in the cam portion are switched. The cam member rotates independently by the elastic force of the operating contact member, and the power supply to the motor is stopped quickly.

本発明にかかるモータアクチュエータによれば、接点部材が占めるスペースの低減による装置の小型化、および接点部材の共通化によるコスト削減が可能である。 According to the motor actuator of the present invention, it is possible to reduce the size of the apparatus by reducing the space occupied by the contact member and to reduce the cost by using the common contact member.

本発明の一実施形態にかかるモータアクチュエータの外観斜視図である。1 is an external perspective view of a motor actuator according to an embodiment of the present invention. 本発明の一実施形態にかかるモータアクチュエータの平面図であり、出力軸とカット面および被押圧面の位置関係を示した図である。It is a top view of the motor actuator concerning one Embodiment of this invention, and is the figure which showed the positional relationship of an output shaft, a cut surface, and a to-be-pressed surface. 本発明の一実施形態にかかるモータアクチュエータの内部を出力ユニットを分解して示した図である。It is the figure which decomposed | disassembled and showed the inside of the motor actuator concerning one Embodiment of this invention. 本発明の一実施形態にかかるモータアクチュエータからケースおよび出力ユニットを取り外した状態であって、二組の接点部材組が面Ｐを対称面として面対称に位置する状態を示した図である。It is the figure which showed the state which removed the case and the output unit from the motor actuator concerning one Embodiment of this invention, Comprising: Two sets of contact member groups are located in plane symmetry by making the surface P into a symmetry plane. 歯車列の外観斜視図である。It is an external appearance perspective view of a gear train. 図５とは異なる方向から見た歯車列の外観斜視図である。FIG. 6 is an external perspective view of a gear train viewed from a direction different from FIG. 5. 出力部材を下方から見た外観斜視図である。It is the external appearance perspective view which looked at the output member from the lower part. カム部材の外観図であって、図８（ａ）は上方から見た外観斜視図、図８（ｂ）は底面図（カム部の形状を示した図）である。FIGS. 8A and 8B are external views of the cam member, and FIG. 8B is a bottom perspective view (a view showing the shape of the cam portion). 出力歯車の外観図であって、図９（ａ）は上方から見た外観斜視図、図９（ｂ）は平面図（カット面の形状を示した図）である。FIG. 9A is an external view of the output gear, FIG. 9A is an external perspective view seen from above, and FIG. 9B is a plan view (a view showing the shape of the cut surface). 回路基板の外観斜視図である。It is an external appearance perspective view of a circuit board. プレートの外観斜視図である。It is an external appearance perspective view of a plate. 出力ユニットおよびその回転によって変位する接点部材（作動接点部材）の位置関係を説明するための図であり、（ａ１）〜（ａ３）はカム面の回転位置と接点部材の関係を、（ｂ１）〜（ｂ３）は出力部材の凹部およびカム部材の凸部と接点部材の関係を、（ｃ１）〜（ｃ３）は出力部材（出力軸）と接点部材の関係を、一方の（第一）作動接点部材と一方の（第一）固定接点部材が接触した状態から離れるまでを順を追って示したものである。It is a figure for demonstrating the positional relationship of the output member and the contact member (operation | movement contact member) displaced by the rotation, (a1)-(a3) shows the relationship between the rotational position of a cam surface, and a contact member, (b1). -(B3) shows the relationship between the concave portion of the output member and the convex portion of the cam member and the contact member, and (c1)-(c3) show the relationship between the output member (output shaft) and the contact member, one (first) operation. The contact member and one (first) fixed contact member are shown in order until they are separated from the contact state.

以下、本発明の実施形態について詳細に説明する。本発明の実施形態にかかるモータアクチュエータ１は、モータ１０と、出力ユニット２０と、回路基板３０と、作動接点部材４１，４２と、固定接点部材５１，５２と、を備える。これら各構成はプレート７０に支持される等してケース８０内に収容されている（図１〜図４参照）。以下、各構成について詳細に説明する。なお、以下の説明における上（側）とは、モータ１０の回転軸１４方向における当該回転軸１４の先端側をいい、下（側）とは、回転軸１４の基端側、すなわちモータ１０の本体部１１が位置する側をいうものとする。つまり、図２の紙面に直交する方向を上下方向とする。 Hereinafter, embodiments of the present invention will be described in detail. The motor actuator 1 according to the embodiment of the present invention includes a motor 10, an output unit 20, a circuit board 30, operating contact members 41 and 42, and fixed contact members 51 and 52. These components are accommodated in the case 80 by being supported by the plate 70 (see FIGS. 1 to 4). Hereinafter, each configuration will be described in detail. In the following description, the upper side refers to the distal end side of the rotating shaft 14 in the direction of the rotating shaft 14 of the motor 10, and the lower side refers to the proximal end side of the rotating shaft 14, that is, the motor 10. The side where the main body part 11 is located shall be said. That is, the direction orthogonal to the paper surface of FIG.

モータ１０は、本アクチュエータの駆動源である。モータ１０は、ステータおよびロータが収納された本体部１１と、ロータと一体的に回転する回転軸１４と、二つの入力端子（プラス入力端子１２およびマイナス（グランド）入力端子１３）と、を有する。入力端子１２，１３は、回路基板３０に形成された導電パターンと電気的に接続されている（詳細は後述）。このモータ１０の動力は、歯車列を介して出力ユニット２０まで伝達される。歯車列の構成は次の通りである。 The motor 10 is a drive source for the actuator. The motor 10 includes a main body 11 in which a stator and a rotor are housed, a rotating shaft 14 that rotates integrally with the rotor, and two input terminals (a positive input terminal 12 and a negative (ground) input terminal 13). . The input terminals 12 and 13 are electrically connected to a conductive pattern formed on the circuit board 30 (details will be described later). The power of the motor 10 is transmitted to the output unit 20 through a gear train. The configuration of the gear train is as follows.

図５および図６に示すように、モータ１０の回転軸１４には、この回転軸１４とともに回転する一番車６１が固定されている。一番車６１は、複合歯車である二番車６２の大径歯部が噛み合っている。二番車６２の小径歯部は、三番車６３に噛み合っている。この三番車６３はモータ１０の二つの入力端子１２，１３の間に位置する。三番車６３には、歯部よりも中央側に円形の空間が形成されており、この空間に周知のラチェット機構が構築されている。ラチェット機構を構成する爪部材には四番車６４が固定されている。つまり、三番車６３の一方側の回転は四番車６４に伝達されるものの、他方側の回転は四番車６４に伝達されない構成となっている。四番車６４には、複合歯車である五番車６５の大径歯部が噛み合っている。五番車６５の小径歯部には、複合歯車である六番車６６の大径歯部が噛み合っている。六番車６６の小径歯部には、出力歯車６７の歯部６７５が噛み合っている。出力歯車６７には、出力ユニット２０を構成する出力部材２１が係合している。なお、この歯車列はあくまで一例であり、モータ１０の動力を出力ユニット２０（出力部材２１）まで伝達することができる構成であれば適宜変更可能である。 As shown in FIGS. 5 and 6, a first wheel 61 that rotates together with the rotating shaft 14 is fixed to the rotating shaft 14 of the motor 10. The first wheel 61 is engaged with the large-diameter tooth portion of the second wheel 62 which is a compound gear. The small diameter tooth portion of the center wheel & pinion 62 is engaged with the center wheel & pinion 63. The third wheel 63 is located between the two input terminals 12 and 13 of the motor 10. In the third wheel & pinion 63, a circular space is formed on the center side of the tooth portion, and a known ratchet mechanism is constructed in this space. A fourth wheel & pinion 64 is fixed to the claw member constituting the ratchet mechanism. That is, the rotation on the one side of the third wheel 63 is transmitted to the fourth wheel 64, but the rotation on the other side is not transmitted to the fourth wheel 64. The fourth wheel 64 is meshed with the large-diameter tooth portion of the fifth wheel 65 which is a compound gear. The small diameter tooth portion of the fifth wheel & pinion 65 is engaged with the large diameter tooth portion of the sixth wheel & pinion 66 which is a compound gear. The toothed portion 675 of the output gear 67 meshes with the small-diameter toothed portion of the sixth wheel 66. An output member 21 constituting the output unit 20 is engaged with the output gear 67. Note that this gear train is merely an example, and can be appropriately changed as long as the power of the motor 10 can be transmitted to the output unit 20 (output member 21).

出力ユニット２０は、モータ１０の動力が伝達される出力部材２１およびこの出力部材２１が回転することによって回転するカム部材２２を有する（図３参照）。出力部材２１は、出力歯車６７に取り付けられることにより出力歯車６７と一体的に回転する部材である。出力歯車６７が有する係合部６７１が、出力部材２１の貫通孔２１１に係合されることにより両者は連結されている。具体的には以下の通りである。 The output unit 20 includes an output member 21 to which the power of the motor 10 is transmitted and a cam member 22 that rotates when the output member 21 rotates (see FIG. 3). The output member 21 is a member that rotates integrally with the output gear 67 by being attached to the output gear 67. The engaging part 671 of the output gear 67 is engaged with the through hole 211 of the output member 21 so that both are connected. Specifically, it is as follows.

図３〜図６、図９に示すように、出力歯車６７の係合部６７１は二つの係合突起６７１１を有する。両係合突起６７１１は、空間６７２を挟んで対称に位置し、少なくとも当該空間６７２側に（互いに近づく方向に）弾性変形可能である。係合部６７１の先端部分６７３は円錐状に形成されている。なお、ここでいう円錐状とは、厳密に言えば、係合部６７１が、上記空間６７２が存在せず二つの係合突起６７１１が一体であり、かつ、後述するカット面６７４が形成されていない形状であると仮定した場合において、当該先端部分６７３が（周方向に切り欠かれた部分のない）円錐になるという意味である。また、本実施形態では、当該円錐状の先端部分６７３の先端側の一部は面取りされている。この係合部６７１の先端部分６７３は、両係合突起６７１１が弾性変形していない状態において、最も基端側の部分の径方向の大きさが、出力部材２１の貫通孔２１１よりも大きくなるように形成されている。また、当該最も基端側の部分の径方向の大きさは、両係合突起６７１１が互いに近づく方向に一定量以上弾性変形したときに、出力部材２１の貫通孔２１１よりも小さくなるように形成されている。 As shown in FIGS. 3 to 6 and 9, the engaging portion 671 of the output gear 67 has two engaging protrusions 6711. Both the engagement protrusions 6711 are symmetrically positioned with respect to the space 672 and can be elastically deformed at least toward the space 672 (in a direction approaching each other). The distal end portion 673 of the engaging portion 671 is formed in a conical shape. Strictly speaking, the term “conical shape” as used herein means that the engaging portion 671 has no space 672, two engaging protrusions 6711 are integrated, and a cut surface 674 described later is formed. This means that the tip portion 673 becomes a cone (without a portion cut out in the circumferential direction) when it is assumed that there is no shape. In the present embodiment, a part of the tip side of the conical tip portion 673 is chamfered. The distal end portion 673 of the engaging portion 671 has a radial size of the most proximal end portion larger than that of the through hole 211 of the output member 21 in a state where the both engaging projections 6711 are not elastically deformed. It is formed as follows. Further, the radial size of the most proximal portion is formed so as to be smaller than the through hole 211 of the output member 21 when both engaging protrusions 6711 are elastically deformed by a certain amount or more in a direction approaching each other. Has been.

係合部６７１の外側上部には出力歯車６７の回転中心軸方向に沿う平面であるカット面６７４が形成されている。本実施形態では、二つのカット面６７４が平行になるように、かつ、二つの係合突起６７１１同士が空間６７２を挟んで対向する面（空間に臨む面）に対して直交するように（換言すれば、二つの係合突起６７１１が互いに近づく方向に沿う方向に）形成されている。 A cut surface 674 that is a plane along the rotation center axis direction of the output gear 67 is formed on the outer upper portion of the engaging portion 671. In the present embodiment, the two cut surfaces 674 are parallel to each other, and the two engagement protrusions 6711 are orthogonal to a surface (surface facing the space) facing each other across the space 672 (in other words, In this case, the two engaging protrusions 6711 are formed in a direction along the direction in which the two engaging protrusions 6711 approach each other.

一方、出力部材２１の貫通孔２１１は、その断面形状が、上記係合部６７１の先端部分６７３より根元部分の断面形状（空間６７２を含む）と同じになるように形成されている。つまり、出力部材２１には、貫通孔２１１に面するように形成された平面（被押圧面２１２）が形成されている（図７参照）。また、出力部材２１における貫通孔２１１が形成された周囲は、端面よりもモータ１０側に窪んでいる（図３参照）。 On the other hand, the through hole 211 of the output member 21 is formed so that the cross-sectional shape thereof is the same as the cross-sectional shape (including the space 672) of the root portion from the distal end portion 673 of the engaging portion 671. That is, the output member 21 has a flat surface (a pressed surface 212) formed so as to face the through hole 211 (see FIG. 7). Further, the periphery of the output member 21 where the through hole 211 is formed is recessed toward the motor 10 side from the end face (see FIG. 3).

このように形成された出力部材２１の貫通孔２１１に、出力歯車６７の係合部６７１の先端部分６７３を押しつけると、貫通孔２１１の周縁によって円錐状に形成された係合部６７１の先端部分６７３が押され、両係合突起６７１１が互いに近づく方向に弾性変形していく。両係合突起６７１１が所定量以上弾性変形すると、係合部６７１の先端部分６７３が貫通孔２１１を通過する。係合部６７１の先端部分６７３が貫通孔２１１を通過すると両係合突起６７１１の弾性変形が解消され、係合部６７１の先端部分６７３が貫通孔２１１の周縁（窪みの底面）に引っ掛かった状態となる。また、係合部６７１の断面形状と貫通孔２１１の断面形状は同じであるため、係合部６７１に形成された二つのカット面６７４のそれぞれは、出力部材２１に形成された各被押圧面２１２に密接した状態になる。このように、二つの係合突起６７１１の弾性変形、いわゆるスナップフィットにより、出力歯車６７の係合部６７１が出力部材２１の貫通孔２１１に係合される。 When the distal end portion 673 of the engaging portion 671 of the output gear 67 is pressed against the through hole 211 of the output member 21 formed in this way, the distal end portion of the engaging portion 671 formed conically with the peripheral edge of the through hole 211. 673 is pushed, and both engaging protrusions 6711 are elastically deformed in a direction approaching each other. When both engaging protrusions 6711 are elastically deformed by a predetermined amount or more, the tip end portion 673 of the engaging portion 671 passes through the through hole 211. When the distal end portion 673 of the engaging portion 671 passes through the through hole 211, the elastic deformation of both engaging projections 6711 is eliminated, and the distal end portion 673 of the engaging portion 671 is caught on the periphery (the bottom surface of the recess) of the through hole 211. It becomes. Further, since the cross-sectional shape of the engaging portion 671 and the cross-sectional shape of the through hole 211 are the same, each of the two cut surfaces 674 formed in the engaging portion 671 is a pressed surface formed in the output member 21. 212 is in close contact. In this manner, the engaging portion 671 of the output gear 67 is engaged with the through hole 211 of the output member 21 by elastic deformation of the two engaging protrusions 6711, so-called snap fit.

かかる状態となることにより、出力歯車６７が回転すると、その出力歯車６７の係合部６７１に形成されたカット面６７４が出力部材２１に形成された被押圧面２１２を押し、出力部材２１も回転する。つまり、出力歯車６７と出力部材２１が一体的に回転する。 In this state, when the output gear 67 rotates, the cut surface 674 formed on the engaging portion 671 of the output gear 67 pushes the pressed surface 212 formed on the output member 21, and the output member 21 also rotates. To do. That is, the output gear 67 and the output member 21 rotate integrally.

このように出力歯車６７に係合される出力部材２１は、その端面（モータ１０が位置する側の反対の端面）から突出する出力軸２１３を有する。この出力軸２１３は、本実施形態にかかるモータアクチュエータ１によって駆動される図示されない駆動対象物に連繋される部材である。つまり、出力部材２１の回転中心軸を中心とした円運動する出力軸２１３の動力が、各種伝達部材を介して、または直接、駆動対象物に伝達される。出力軸２１３は、上記カット面６７４および被押圧面２１２が形成された側に位置する。詳しくは、上記カット面６７４および被押圧面２１２は、出力軸２１３の中心と係合部６７１の中心（出力歯車６７の回転中心）とを結んだ直線Ｌに交差するように形成されている。本実施形態では、カット面６７４および被押圧面２１２は、出力軸２１３の中心と係合部６７１の中心（出力歯車６７の回転中心）とを結んだ直線Ｌに直交するように形成されている（図２参照）。 Thus, the output member 21 engaged with the output gear 67 has an output shaft 213 protruding from its end surface (the end surface opposite to the side where the motor 10 is located). The output shaft 213 is a member linked to a driving object (not shown) driven by the motor actuator 1 according to the present embodiment. That is, the power of the output shaft 213 that makes a circular motion around the rotation center axis of the output member 21 is transmitted to the driven object via various transmission members or directly. The output shaft 213 is located on the side where the cut surface 674 and the pressed surface 212 are formed. Specifically, the cut surface 674 and the pressed surface 212 are formed so as to intersect a straight line L connecting the center of the output shaft 213 and the center of the engaging portion 671 (the rotation center of the output gear 67). In the present embodiment, the cut surface 674 and the pressed surface 212 are formed to be orthogonal to a straight line L connecting the center of the output shaft 213 and the center of the engaging portion 671 (the rotation center of the output gear 67). (See FIG. 2).

また、出力部材２１の下側、すなわち、以下で詳述するカム部材２２が位置する側には、周方向に沿う凹部２１４が形成されている（図７参照）。この凹部２１４の内側には、カム部材２２に形成される凸部２２１が入り込んだ状態にある。 Moreover, the recessed part 214 along the circumferential direction is formed in the lower side of the output member 21, ie, the side where the cam member 22 explained in full detail below is located (refer FIG. 7). A convex portion 221 formed on the cam member 22 enters the concave portion 214.

図３および図８に示す出力部材２１とともに出力ユニット２０を構成するカム部材２２は、係合部６７１に対して回転自在に支持されている。具体的には、断面円形の軸である係合部６７１の下部（カット面６７４の下側）に回転自在に支持されている。つまり、出力歯車６７の中心軸方向において出力歯車６７の歯部６７５と出力部材２１との間で、係合部６７１に対して回転自在に支持されている。このカム部材２２の上側の縁部には、上方に向かって突出した周方向に沿う凸部２２１が形成されている。この凸部２２１の周方向長さは上述した出力部材２１の凹部２１４の周方向長さよりも短くなるように形成されており、当該凸部２２１は凹部２１４の内側に入り込んだ状態にある。したがって、出力部材２１が一方に回転すると、周方向における凹部２１４の一方の壁面が凸部２２１の一方の壁面に接触し、カム部材２２も一方に回転する。出力部材２１が他方に回転すると、周方向における凹部２１４の他方の壁面が凸部２２１の他方の壁面に接触し、カム部材２２も他方に回転する。ただし、凸部２２１と凹部２１４には上述した周方向長さの関係があるため、出力部材２１とカム部材２２の間には周方向に「遊び（ガタ）」がある。つまり、両者の周方向における係合には、凹部２１４の周方向長さと凸部２２１の周方向長さの差分、当該「遊び」が存在する。そのため、当該「遊び」の大きさ分、カム部材２２は出力部材２１から独立して回転することが可能である。例えば、周方向における凹部２１４の一方の壁面が凸部２２１の一方の壁面に接触した状態にあるとき、凹部２１４の周方向長さと凸部２２１の周方向長さの差分、カム部材２２は出力部材２１とは別に他方に回転することが可能である。 The cam member 22 that constitutes the output unit 20 together with the output member 21 shown in FIGS. 3 and 8 is supported rotatably with respect to the engaging portion 671. Specifically, it is rotatably supported by the lower part of the engaging part 671 (below the cut surface 674), which is an axis having a circular cross section. In other words, the output gear 67 is rotatably supported with respect to the engaging portion 671 between the tooth portion 675 of the output gear 67 and the output member 21 in the central axis direction of the output gear 67. On the upper edge of the cam member 22, a convex portion 221 is formed along the circumferential direction protruding upward. The circumferential length of the convex portion 221 is formed to be shorter than the circumferential length of the concave portion 214 of the output member 21 described above, and the convex portion 221 enters the concave portion 214. Therefore, when the output member 21 rotates in one direction, one wall surface of the concave portion 214 in the circumferential direction comes into contact with one wall surface of the convex portion 221, and the cam member 22 also rotates in one direction. When the output member 21 rotates to the other side, the other wall surface of the concave portion 214 in the circumferential direction contacts the other wall surface of the convex portion 221, and the cam member 22 also rotates to the other side. However, since the convex portion 221 and the concave portion 214 have the above-described circumferential length relationship, there is “play” in the circumferential direction between the output member 21 and the cam member 22. That is, in the engagement in the circumferential direction between them, there is a difference between the circumferential length of the concave portion 214 and the circumferential length of the convex portion 221 and the “play”. Therefore, the cam member 22 can rotate independently of the output member 21 by the size of the “play”. For example, when one wall surface of the concave portion 214 in the circumferential direction is in contact with one wall surface of the convex portion 221, the cam member 22 outputs the difference between the circumferential length of the concave portion 214 and the circumferential length of the convex portion 221. Apart from the member 21, it is possible to rotate to the other side.

また、カム部材２２の下側には、周方向に沿うカム部２２２が形成されている。カム部２２２は、相対的に大径の大径部２２２２、および相対的に小径の小径部２２２１とを含む。大径部２２２２と小径部２２２１の境界部分２２２３は、両者を繋げるなだらかな傾斜面となっている。このカム部２２２に、詳細を後述する作動接点部材４１，４２が接触している。 A cam portion 222 is formed below the cam member 22 along the circumferential direction. The cam portion 222 includes a large diameter portion 2222 having a relatively large diameter and a small diameter portion 2221 having a relatively small diameter. A boundary portion 2223 between the large-diameter portion 2222 and the small-diameter portion 2221 is a gentle inclined surface that connects the two. Working contact members 41 and 42, which will be described in detail later, are in contact with the cam portion 222.

図３、図４、および図１０に示す回路基板３０は、少なくともその上面に導電性材料がパターニングされてなる導電パターンが形成された部材である。この回路基板３０は、ケース８０に取り付けられたプレート７０に支持されている。回路基板３０に形成された導電パターンは、端子側導電パターン３１および電源側導電パターン３２１，３２２を含む。端子側導電パターン３１は、モータ１０の入力端子１２，１３の一つに電気的に接続された導電パターンである。本実施形態では、モータ１０のマイナス（グランド）入力端子１３に電気的に接続される一つの端子側導電パターン３１が形成されている。 The circuit board 30 shown in FIGS. 3, 4, and 10 is a member having a conductive pattern formed by patterning a conductive material at least on the upper surface thereof. The circuit board 30 is supported by a plate 70 attached to the case 80. The conductive pattern formed on the circuit board 30 includes a terminal side conductive pattern 31 and power source side conductive patterns 321 and 322. The terminal-side conductive pattern 31 is a conductive pattern that is electrically connected to one of the input terminals 12 and 13 of the motor 10. In the present embodiment, one terminal side conductive pattern 31 that is electrically connected to the negative (ground) input terminal 13 of the motor 10 is formed.

電源側導電パターンは、電源の出力端子の一方（端子側導電パターン３１に接続されるモータ１０の入力端子１２，１３と同じ極性）に接続された導電パターンである。本実施形態では、電源のマイナス（グランド）に接続される二つの電源側導電パターン（第一電源側導電パターン３２１および第二電源側導電パターン３２２）が形成されている。本実施形態では、電源のマイナス出力側の電気系統は二系統用意されており、一方の系統の一部を第一電源側導電パターン３２１が、他方の系統の一部を第二電源側導電パターン３２２が構成する。第一電源側導電パターン３２１および第二電源側導電パターン３２２における一方側の端部（作動接点部材４１，４２が接続された側の端部とは反対側の端部）が、電源のマイナスと接続されるマイナス接続部３７１，３７２となっている。 The power supply side conductive pattern is a conductive pattern connected to one of the output terminals of the power supply (the same polarity as the input terminals 12 and 13 of the motor 10 connected to the terminal side conductive pattern 31). In the present embodiment, two power supply side conductive patterns (first power supply side conductive pattern 321 and second power supply side conductive pattern 322) connected to the negative (ground) of the power supply are formed. In this embodiment, there are two electrical systems on the negative output side of the power supply. The first power supply side conductive pattern 321 is part of one system, and the second power supply side conductive pattern is part of the other system. 322 constitutes. One end of the first power supply side conductive pattern 321 and the second power supply side conductive pattern 322 (the end opposite to the end on the side where the operating contact members 41 and 42 are connected) is the minus of the power supply. Negative connection portions 371 and 372 are connected.

図示されない制御手段は、例えばスイッチ等を制御することにより、当該電源のマイナス出力側の電気系統を、第一電源側導電パターン３２１を含む系統、または第二電源側導電パターン３２２を含む系統のいずれかに切り替えることが可能である。 The control means (not shown) controls, for example, a switch or the like so that the electrical system on the negative output side of the power source is either a system including the first power supply side conductive pattern 321 or a system including the second power supply side conductive pattern 322. Can be switched.

さらに、回路基板３０には共通導電パターン３３が形成されている。共通導電パターン３３は、モータ１０の入力端子１２，１３の一つと電源の出力端子の一方（同じ極性のもの）を電気的に接続する導電パターンである。本実施形態では、共通導電パターン３３は、モータ１０のプラス入力端子１２と電源のプラス出力端子を電気的に接続する。共通導電パターン３３の一方側の端部（プラス入力端子１２が接続された側とは反対側の端部）が、電源のプラスと接続されるプラス接続部３６となっている。 Further, a common conductive pattern 33 is formed on the circuit board 30. The common conductive pattern 33 is a conductive pattern that electrically connects one of the input terminals 12 and 13 of the motor 10 and one of the output terminals of the power source (having the same polarity). In the present embodiment, the common conductive pattern 33 electrically connects the plus input terminal 12 of the motor 10 and the plus output terminal of the power source. One end of the common conductive pattern 33 (the end opposite to the side where the plus input terminal 12 is connected) is a plus connection portion 36 connected to the plus of the power source.

図３および図４に示す作動接点部材は、弾性のある導電性材料で形成された板材である。本実施形態では、二つの作動接点部材（第一作動接点部材４１および第二作動接点部材４２）が用いられている。両作動接点部材４１，４２の一端４１１，４２１は、端子側導電パターン３１に電気的に接続されている。つまり、両作動接点部材４１，４２は、端子側導電パターン３１を介してモータ１０のマイナス入力端子１３と電気的に接続されている。 The operation contact member shown in FIGS. 3 and 4 is a plate material formed of an elastic conductive material. In the present embodiment, two working contact members (first working contact member 41 and second working contact member 42) are used. One ends 411, 421 of both working contact members 41, 42 are electrically connected to the terminal-side conductive pattern 31. That is, both the operating contact members 41 and 42 are electrically connected to the negative input terminal 13 of the motor 10 through the terminal side conductive pattern 31.

両作動接点部材４１，４２は同一形状であり、カム部２２２の回転中心軸（すなわち、カム部材２２、出力部材２１、出力歯車６７の回転中心軸）を含む面Ｐを対称面として面対称に位置する。両作動接点部材４１，４２の一端４１１，４２１は略Ｌ字状に形成されている。第一作動接点部材４１の一端４１１と第二作動接点部材４２の一端４２１は、互いに突き合わされた状態で回路基板３０に形成された切り込み３４１に挿入されている。なお、両作動接点部材４１，４２が互いに突き合われた面は、上記対称面と一致する。この切り込み３４１の幅方向両側には、端子側導電パターン３１の一部であるランド３５１が形成されている。このランド３５１に両作動接点部材４１，４２の一端４１１，４２１が半田付けされている。また、本実施形態では、両作動接点部材４１，４２の一端４１１，４２１（ランド３５１に半田付けされた部分）よりも他端４１３，４２３側の一部は略Ｌ字状に屈曲しており、この屈曲部分４１２，４２２はプレート７０に形成された溝（上方が開口している）である接点部材固定部７１，７２に圧入されている。つまり、両作動接点部材４１，４２はプレート７０に支持されている。 Both the operating contact members 41 and 42 have the same shape and are symmetrical with respect to the plane P including the rotation center axis of the cam portion 222 (that is, the rotation center axis of the cam member 22, the output member 21, and the output gear 67). To position. One ends 411 and 421 of the operating contact members 41 and 42 are formed in a substantially L shape. One end 411 of the first working contact member 41 and one end 421 of the second working contact member 42 are inserted into a notch 341 formed in the circuit board 30 in a state of being abutted with each other. In addition, the surface where both the operation contact members 41 and 42 are abutted with each other coincides with the symmetry plane. Lands 351 that are part of the terminal-side conductive pattern 31 are formed on both sides in the width direction of the notches 341. One ends 411 and 421 of both operation contact members 41 and 42 are soldered to the land 351. Moreover, in this embodiment, a part of the other end 413, 423 side is bent in a substantially L shape rather than one end 411,421 (part soldered to the land 351) of both the operation contact members 41,42. The bent portions 412 and 422 are press-fitted into contact member fixing portions 71 and 72 which are grooves (opened upward) formed in the plate 70. That is, both the operating contact members 41 and 42 are supported by the plate 70.

図３および図４に示す固定接点部材は、弾性のある導電性材料で形成された板材である。本実施形態では、二つの固定接点部材（第一固定接点部材５１および第二固定接点部材５２）が用いられている。第一固定接点部材５１の一端５１１は、第一電源側導電パターン３２１に電気的に接続され、第二固定接点部材５２の一端５２１は、第二電源側導電パターン３２２に電気的に接続されている。つまり、両作動接点部材４１，４２は、いずれか一方の電源側導電パターンを介して電源のマイナス出力端子と電気的に接続されている。 The fixed contact member shown in FIGS. 3 and 4 is a plate material made of an electrically conductive material having elasticity. In the present embodiment, two fixed contact members (first fixed contact member 51 and second fixed contact member 52) are used. One end 511 of the first fixed contact member 51 is electrically connected to the first power supply side conductive pattern 321, and one end 521 of the second fixed contact member 52 is electrically connected to the second power supply side conductive pattern 322. Yes. That is, both the operating contact members 41 and 42 are electrically connected to the negative output terminal of the power supply through one of the power supply side conductive patterns.

両固定接点部材５１，５２は同一形状であり、カム部２２２の回転中心軸（すなわち、カム部材２２、出力部材２１、出力歯車６７の回転中心軸）を含む面Ｐを対称面として面対称に位置する。具体的には、上記第一作動接点部材４１の外側に第一固定接点部材５１が位置し、上記第二作動接点部材４２の外側に第二固定接点部材５２が位置する。つまり、本実施形態では、一の作動接点部材と一の固定接点部材からなる接点部材組が二組設けられており、両接点部材組は上記面Ｐを対称面として面対称に位置する。 Both the fixed contact members 51 and 52 have the same shape and are symmetrical with respect to the plane P including the rotation center axis of the cam portion 222 (that is, the rotation center axis of the cam member 22, the output member 21, and the output gear 67). To position. Specifically, the first fixed contact member 51 is positioned outside the first operating contact member 41, and the second fixed contact member 52 is positioned outside the second operating contact member 42. That is, in this embodiment, two contact member sets each including one working contact member and one fixed contact member are provided, and both contact member sets are positioned symmetrically with respect to the plane P as a symmetry plane.

第一固定接点部材５１および第二固定接点部材５２の一端５１１，５２１は、それぞれ、回路基板３０に形成された切り込み３４２，３４３に挿入されている。この切り込み３４２，３４３の幅方向両側には、第一電源側導電パターン３２１または第二電源側導電パターン３２２の一部であるランド３５２，３５３が形成されている。このランド３５２，３５３に両固定接点部材５１，５２の一端５１１，５２１が半田付けされている。また、本実施形態では、両固定接点部材５１，５２の一端５１１，５２１（ランド３５２，３５３に半田付けされた部分）よりも他端５１３，５２３側の一部は略Ｌ字状に屈曲しており、この屈曲部分５１２，５２２はプレート７０に形成された溝（上方が開口している）である接点部材固定部７３，７４に圧入されている。つまり、両固定接点部材５１，５２はプレート７０に支持されている。 One ends 511 and 521 of the first fixed contact member 51 and the second fixed contact member 52 are inserted into cuts 342 and 343 formed in the circuit board 30, respectively. Lands 352 and 353 which are part of the first power supply side conductive pattern 321 or the second power supply side conductive pattern 322 are formed on both sides in the width direction of the notches 342 and 343. One ends 511 and 521 of both fixed contact members 51 and 52 are soldered to the lands 352 and 353. Further, in the present embodiment, a part of the other end 513, 523 side of the fixed contact members 51, 52 on the other end 513, 523 side is bent substantially in an L shape from one end 511, 521 (part soldered to the land 352, 353). The bent portions 512 and 522 are press-fitted into contact member fixing portions 73 and 74 that are grooves (opened upward) formed in the plate 70. That is, the fixed contact members 51 and 52 are supported by the plate 70.

図１２（ａ１）〜（ａ３）に示すように、上記両作動接点部材４１，４２の他端４１３，４２３は、略Ｖ字状に屈曲しており、この屈曲部分が上記カム部２２２に接触している。第一作動接点部材４１の屈曲部分がカム部２２２の大径部２２２２に接触した状態にあるときは、第一作動接点部材４１は第一固定接点部材５１側に大きく弾性変形し、第一固定接点部材５１の他端５１３に接触する。第二作動接点部材４２の屈曲部分がカム部２２２の大径部２２２２に接触した状態にあるときは、第二作動接点部材４２は第二固定接点部材５２側に大きく弾性変形し、第二固定接点部材５２の他端５２３に接触する。一方、作動接点部材４１，４２の屈曲部分がカム部２２２の小径部２２２１に接触しているときには、弾性変形量が小さく、作動接点部材４１，４２は固定接点部材５１，５２に接触しない。つまり、カム部２２２の小径部２２２１は、作動接点部材４１，４２と固定接点部材５１，５２を非接触状態とし、両接点部材を介した給電を遮断する。本実施形態では、一方の作動接点部材４１（４２）と固定接点部材５１（５２）が非接触状態にあるとき、他方の作動接点部材４２（４１）と固定接点部材５２（５１）が接触状態となるような位置に小径部２２２１が形成されている。具体的には、一方の作動接点部材４１（４２）および一方の固定接点部材５１（５２）と、他方の作動接点部材４２（４１）および他方の固定接点部材５２（５１）とは、カム部２２２の回転中心軸を含む面Ｐを対称面として面対称に位置するから、カム部２２２における小径部２２２１が形成された部分の反対側（１８０度回転した位置）には大径部２２２２が位置する。 As shown in FIGS. 12A1 to 12A3, the other ends 413 and 423 of the operating contact members 41 and 42 are bent in a substantially V shape, and the bent portion contacts the cam portion 222. doing. When the bent portion of the first working contact member 41 is in contact with the large-diameter portion 2222 of the cam portion 222, the first working contact member 41 is greatly elastically deformed toward the first fixed contact member 51, and the first fixed contact member 41 is fixed. Contact the other end 513 of the contact member 51. When the bent portion of the second working contact member 42 is in contact with the large-diameter portion 2222 of the cam portion 222, the second working contact member 42 is greatly elastically deformed toward the second fixed contact member 52, and the second fixed contact member 42 is fixed. Contact the other end 523 of the contact member 52. On the other hand, when the bent portions of the operating contact members 41 and 42 are in contact with the small diameter portion 2221 of the cam portion 222, the amount of elastic deformation is small, and the operating contact members 41 and 42 do not contact the fixed contact members 51 and 52. That is, the small-diameter portion 2221 of the cam portion 222 places the operating contact members 41 and 42 and the fixed contact members 51 and 52 in a non-contact state, and interrupts power supply via both contact members. In this embodiment, when one working contact member 41 (42) and the fixed contact member 51 (52) are in a non-contact state, the other working contact member 42 (41) and the fixed contact member 52 (51) are in a contact state. A small diameter portion 2221 is formed at such a position. Specifically, one working contact member 41 (42) and one fixed contact member 51 (52), and the other working contact member 42 (41) and the other fixed contact member 52 (51) are cam portions. Since the plane P including the rotation center axis 222 is symmetrical with respect to the plane of symmetry, the large diameter portion 2222 is located on the opposite side (position rotated 180 degrees) of the cam portion 222 where the small diameter portion 2221 is formed. To do.

また、上述したように、作動接点部材４１，４２の一端４１１，４２１および固定接点部材５１，５２の一端５１１，５２１は、回路基板３０に形成された導電パターンの一部であるランド３５１，３５２，３５３に半田付けされているが、当該一端は回路基板３０に形成された切り込み３４１，３４２，３４３に挿入されている。本実施形態にかかるモータアクチュエータ１は、回路基板３０にこれらの切り込み３４１，３４２，３４３が形成されたことを利用して、作動接点部材４１，４２および固定接点部材５１，５２をプレート７０に取り付けた後、回路基板３０を取り付けることが可能となるように構成されている。具体的には以下の通りである。 In addition, as described above, the ends 411 and 421 of the operating contact members 41 and 42 and the ends 511 and 521 of the fixed contact members 51 and 52 are lands 351 and 352 that are part of the conductive pattern formed on the circuit board 30. , 353, but one end thereof is inserted into cuts 341, 342, 343 formed in the circuit board 30. The motor actuator 1 according to the present embodiment attaches the operating contact members 41 and 42 and the fixed contact members 51 and 52 to the plate 70 by utilizing the notches 341, 342 and 343 formed in the circuit board 30. After that, the circuit board 30 can be attached. Specifically, it is as follows.

図３、図４、および図１１に示すプレート７０には、上方に向かって延びる先端に爪７６１が形成された係止片７６が形成されている。爪７６１は上方（先端）向かって先細である。また、プレート７０には上方に向かって突出した二つの位置決め突起７５が形成されている。一方、回路基板３０には二つの位置決め孔３８が形成されている。回路基板３０を上方からプレート７０に近づけると、回路基板３０によって係止片７６が押されて外側に弾性変形する。回路基板３０が爪７６１の下側に入り込むと、係止片７６の弾性変形が解消し、回路基板３０が爪７６１に引っ掛かった状態となる。また、二つの位置決め突起７５のそれぞれが位置決め孔３８に入り込むことにより、回路基板３０とプレート７０の位置決めがなされる。このように位置決めがなされると、回路基板３０に形成された切り込み３４１，３４２，３４３の位置と、作動接点部材４１，４２の一端４１１，４２１および固定接点部材５１，５２の一端５１１，５２１の位置が一致し、これら接点部材の一端４１１，４２１，５１１，５２１が切り込み３４１，３４２，３４３内に入り込んだ状態となる。 3, 4, and 11 is formed with a locking piece 76 having a claw 761 formed at a tip that extends upward. The claw 761 is tapered toward the top (tip). The plate 70 is formed with two positioning projections 75 protruding upward. On the other hand, two positioning holes 38 are formed in the circuit board 30. When the circuit board 30 is brought close to the plate 70 from above, the locking piece 76 is pushed by the circuit board 30 and elastically deforms outward. When the circuit board 30 enters the lower side of the claw 761, the elastic deformation of the locking piece 76 is eliminated and the circuit board 30 is caught by the claw 761. Further, each of the two positioning projections 75 enters the positioning hole 38, whereby the circuit board 30 and the plate 70 are positioned. When positioning is performed in this way, the positions of the notches 341, 342, and 343 formed in the circuit board 30, the ends 411 and 421 of the operating contact members 41 and 42, and the ends 511 and 521 of the fixed contact members 51 and 52 are determined. The positions coincide with each other, and one end 411, 421, 511, 521 of these contact members enters the notches 341, 342, 343.

以下、このような構成を備える本実施形態にかかるモータアクチュエータ１の動作について、一部上記説明と重複するが説明する。 Hereinafter, the operation of the motor actuator 1 according to the present embodiment having such a configuration will be described although partially overlapping with the above description.

駆動対象物を動作させようとするときには、制御手段が電源からモータ１０に電力を供給する。電源のプラス出力側の電気系統は共通導電パターン３３を介して常にモータ１０のプラス入力端子１２に接続されているため、制御手段は電源のマイナス出力側の電気系統を、第一電源側導電パターン３２１を含む系統または第二電源側導電パターン３２２を含む系統のいずれかに設定することによりモータ１０に電力を供給する。例えば、第一作動接点部材４１と第一固定接点部材５１が接触状態にある駆動前の状態において、電源のマイナス出力側の電気系統を第一電源側導電パターン３２１を含む系統に設定した場合には、第一電源側導電パターン３２１、第一固定接点部材５１、第一作動接点部材４１、および端子側導電パターン３１を通じてモータ１０に電力を供給する。 When the driven object is to be operated, the control means supplies power to the motor 10 from the power source. Since the electrical system on the positive output side of the power source is always connected to the positive input terminal 12 of the motor 10 via the common conductive pattern 33, the control means connects the electrical system on the negative output side of the power source to the first power source side conductive pattern. The electric power is supplied to the motor 10 by setting to either the system including 321 or the system including the second power supply side conductive pattern 322. For example, when the electric system on the negative output side of the power source is set to a system including the first power source side conductive pattern 321 in the pre-drive state where the first operating contact member 41 and the first fixed contact member 51 are in contact. Supplies electric power to the motor 10 through the first power supply side conductive pattern 321, the first fixed contact member 51, the first operating contact member 41, and the terminal side conductive pattern 31.

この電力供給によってモータ１０が駆動すると、上記歯車列（一番車６１〜六番車６６）を介してモータ１０の動力が伝達され、出力歯車６７が回転する。出力歯車６７が回転すると、その係合部６７１に形成されたカット面６７４と接触（対向）する被押圧面２１２を有する出力部材２１が回転する。この出力部材２１の回転は、出力軸２１３を通じて駆動対象物に伝達される。 When the motor 10 is driven by this power supply, the power of the motor 10 is transmitted through the gear train (first wheel 61 to sixth wheel 66), and the output gear 67 rotates. When the output gear 67 rotates, the output member 21 having the pressed surface 212 that contacts (opposes) the cut surface 674 formed in the engaging portion 671 rotates. The rotation of the output member 21 is transmitted to the driven object through the output shaft 213.

出力部材２１が回転すると、出力部材２１の凹部２１４の内側に入り込んだ凸部２２１を有するカム部材２２も回転する。カム部材２２が所定量回転すると、カム部２２２の大径部２２２２に接触し続けていた第一作動接点部材４１の他端４１３（Ｖ字状に屈曲した部分）が、小径部２２２１に接触した状態となる。第一作動接点部材４１の他端４１３が小径部２２２１に接触した状態となると、第一作動接点部材４１の弾性変形量が小さくなり、第一作動接点部材４１は第一固定接点部材５１から離れる。つまり、電源とモータ１０を繋ぐ電気系統が遮断され、モータ１０が停止する。このように、本実施形態にかかるモータアクチュエータ１は、駆動対象物を動作させるモータ１０の動力を利用して、そのモータ１０自体を自動的に停止させる構成を備えるものである。 When the output member 21 rotates, the cam member 22 having the convex portion 221 that enters the concave portion 214 of the output member 21 also rotates. When the cam member 22 rotates by a predetermined amount, the other end 413 (the portion bent in a V shape) of the first operating contact member 41 that has been in contact with the large diameter portion 2222 of the cam portion 222 has contacted the small diameter portion 2221. It becomes a state. When the other end 413 of the first working contact member 41 comes into contact with the small diameter portion 2221, the elastic deformation amount of the first working contact member 41 becomes small, and the first working contact member 41 moves away from the first fixed contact member 51. . That is, the electric system connecting the power source and the motor 10 is cut off, and the motor 10 stops. Thus, the motor actuator 1 according to the present embodiment has a configuration in which the motor 10 itself is automatically stopped using the power of the motor 10 that operates the driven object.

再びアクチュエータを駆動させる場合には、カム部２２２の大径部２２２２によって大きく弾性変形した状態にある第二作動接点部材４２が第二固定接点部材５２に接触した状態にあるから、電源のマイナス出力側の電気系統を第二電源側導電パターン３２２を含む系統に設定する。そうすると、第二電源側導電パターン３２２、第二固定接点部材５２、第二作動接点部材４２、および端子側導電パターン３１を通じてモータ１０に電力が供給され、モータ１０が駆動する。カム部材２２が所定量回転し、第二作動接点部材４２の他端４２３がカム部２２２の小径部２２２１に接触した状態となると、第二作動接点部材４２の弾性変形量が小さくなり、第二作動接点部材４２が第二固定接点部材５２から離れる。これにより、モータ１０は再び停止する。 When the actuator is driven again, the second operating contact member 42 that is greatly elastically deformed by the large diameter portion 2222 of the cam portion 222 is in contact with the second fixed contact member 52. The electric system on the side is set to a system including the second power supply side conductive pattern 322. If it does so, electric power will be supplied to the motor 10 through the 2nd power supply side conductive pattern 322, the 2nd fixed contact member 52, the 2nd operation contact member 42, and the terminal side conductive pattern 31, and the motor 10 will drive. When the cam member 22 rotates by a predetermined amount and the other end 423 of the second working contact member 42 comes into contact with the small diameter portion 2221 of the cam portion 222, the amount of elastic deformation of the second working contact member 42 decreases, and the second The working contact member 42 is separated from the second fixed contact member 52. Thereby, the motor 10 stops again.

このように、モータアクチュエータ１では、カム部２２２の大径部２２２２に接触していた作動接点部材（第一作動接点部材４１または第二作動接点部材４２）の他端４１３，４２３が、小径部２２２１に進入することにより給電の電気系統が遮断されてモータ１０が停止する。この遮断を実行するための動力は、駆動対象物を動作させる動力を供給するモータ１０そのものが提供する構成であるため、当該給電の電気系統は素早く遮断される必要があるところ、本実施形態では以下のような原理により当該「素早い遮断」が実行される。 As described above, in the motor actuator 1, the other ends 413 and 423 of the operating contact member (the first operating contact member 41 or the second operating contact member 42) that has been in contact with the large-diameter portion 2222 of the cam portion 222 are the small-diameter portions. By entering 2221, the electric power supply system is cut off and the motor 10 stops. The power for executing this interruption is a configuration provided by the motor 10 itself that supplies the power for operating the driven object. Therefore, in the present embodiment, the power supply electrical system needs to be quickly interrupted. The “quick cut-off” is executed according to the following principle.

上述したように、カム部２２２の大径部２２２２と小径部２２２１の境界部分２２２３はなだらかな傾斜面となっている。図１２（ａ１）〜（ｃ１）に示した状態からカム部材２２が反時計回り（矢印Ａ方向）に回転すると、カム部２２２の大径部２２２２に接触していた作動接点部材４１（４２）の他端４１３（４２３）は、当該境界部分２２２３を経て小径部２２２１に進入しようとする。図１２（ａ２）〜（ｃ２）に示すように、作動接点部材４１，４２の他端４１３，４２３が境界部分２２２３に接触した状態となると、弾性を有する作動接点部材４１，４２が傾斜面である境界部分２２２３を押圧する。上述したように、出力部材２１とカム部材２２の間には周方向に「遊び（ガタ）」があり、凹部２１４の周方向長さと凸部２２１の周方向長さの差分、カム部材２２は出力部材２１から独立して回転することが可能であるから、当該作動接点部材４１，４２による押圧力がカム部材２２に作用すると、図１２（ａ３）〜（ｃ３）に示すようにカム部材２２は出力部材２１とは別に回転する。具体的には、図１２（ｂ３）に示すように、接触した状態にあった、周方向における凸部２２１の一方の壁面が凹部２１４の一方の壁面から離れる方向に回転する。つまり、カム部材２２がこのように出力部材２１とは別に回転することができるようになっているため、境界部分２２２３に作動接点部材４１，４２の弾性力が作用すると、すぐにその弾性力を開放する方向にカム部材２２が回動し、作動接点部材４１，４２が固定接点部材５１，５２から離れることになる。 As described above, the boundary portion 2223 between the large diameter portion 2222 and the small diameter portion 2221 of the cam portion 222 is a gentle inclined surface. When the cam member 22 rotates counterclockwise (in the direction of arrow A) from the state shown in FIGS. 12A1 to 12C1, the operating contact member 41 (42) that has been in contact with the large diameter portion 2222 of the cam portion 222. The other end 413 (423) of the other end tends to enter the small diameter portion 2221 through the boundary portion 2223. As shown in FIGS. 12A2 to 12C2, when the other ends 413 and 423 of the operating contact members 41 and 42 come into contact with the boundary portion 2223, the operating contact members 41 and 42 having elasticity are inclined surfaces. A certain boundary portion 2223 is pressed. As described above, there is “play” in the circumferential direction between the output member 21 and the cam member 22, and the difference between the circumferential length of the concave portion 214 and the circumferential length of the convex portion 221, Since it is possible to rotate independently of the output member 21, when the pressing force by the operating contact members 41 and 42 acts on the cam member 22, the cam member 22 is shown in FIGS. 12 (a3) to 12 (c3). Rotates separately from the output member 21. Specifically, as shown in FIG. 12 (b 3), one wall surface of the convex portion 221 in the circumferential direction that has been in contact is rotated in a direction away from one wall surface of the concave portion 214. That is, since the cam member 22 can rotate separately from the output member 21 as described above, when the elastic force of the operating contact members 41 and 42 acts on the boundary portion 2223, the elastic force is immediately applied. The cam member 22 rotates in the opening direction, and the operating contact members 41 and 42 are separated from the fixed contact members 51 and 52.

以上説明した本実施形態にかかるモータアクチュエータ１によれば、次のような作用効果が奏される。 According to the motor actuator 1 concerning this embodiment demonstrated above, there exist the following effects.

本実施形態にかかるモータアクチュエータ１は、モータ１０と電源とを繋ぐ電気的配線の一部が、回路基板３０に形成される導電パターン（端子側導電パターン３１および電源側導電パターン）によって構成されるため、接点部材４１，４２，５１，５２が占めるスペースを従来よりも小さくすることができる。 In the motor actuator 1 according to the present embodiment, a part of the electrical wiring connecting the motor 10 and the power source is configured by conductive patterns (terminal side conductive patterns 31 and power source side conductive patterns) formed on the circuit board 30. Therefore, the space occupied by the contact members 41, 42, 51, 52 can be made smaller than before.

また、本実施形態にかかるモータアクチュエータ１は、モータ１０への給電の実行、停止を切り替える作動接点部材４１（４２）および固定接点部材５１（５２）が二組設けられるものであるところ、モータ１０と電源とを繋ぐ電気的配線の一部が回路基板３０の導電パターンによって形成されることを巧みに利用し、これら接点部材４１，４２，５１，５２が面対称に位置するように構成されている。つまり、一方の作動接点部材４１と他方の作動接点部材４２が同形状となり、一方の固定接点部材５１と他方の固定接点部材５２が同形状となり、すなわち二種類の部材が二組で構成できることから、接点部材４１，４２，５１，５２の共通化ができて製造コストや部材を管理するためのコストが抑制される。 The motor actuator 1 according to the present embodiment is provided with two sets of operating contact members 41 (42) and fixed contact members 51 (52) for switching between execution and stop of power supply to the motor 10. The contact members 41, 42, 51, 52 are configured to be symmetrical with respect to the fact that a part of the electrical wiring connecting the power source and the power source is formed by the conductive pattern of the circuit board 30. Yes. That is, one working contact member 41 and the other working contact member 42 have the same shape, and one fixed contact member 51 and the other fixed contact member 52 have the same shape, that is, two types of members can be configured in two sets. The contact members 41, 42, 51, 52 can be shared, and the manufacturing cost and the cost for managing the members are suppressed.

また、作動接点部材４１，４２の一端４１１，４２１側の一部および固定接点部材５１，５２の一端５１１，５２１側の一部は、プレート７０に形成された接点部材固定部７１，７２，７３，７４に固定されている。つまり、弾性変形する接点部材４１，４２，５１，５２の支点となる箇所がプレート７０に支持されているため、接点部材４１，４２，５１，５２の動作（接点のＯＮ／ＯＦＦの切り替わり）が確実なものとなる。 Further, part of the working contact members 41, 42 on the one end 411, 421 side and part of the fixed contact member 51, 52 on the one end 511, 521 side are contact member fixing portions 71, 72, 73 formed on the plate 70. , 74. That is, since the plate member 70 supports the elastically deforming contact members 41, 42, 51, 52, the operation of the contact members 41, 42, 51, 52 (switching of contacts ON / OFF) is performed. It will be certain.

また、回路基板３０には、作動接点部材４１，４２の一端４１１，４２１および固定接点部材５１，５２の一端５１１，５２１が挿入される切り込み３４１，３４２，３４３が形成されているため、接点部材固定部７１，７２，７３，７４に接点部材４１，４２，５１，５２を支持させた後、その上から回路基板３０を取り付けることができる。つまり、接点部材４１，４２，５１，５２は、カム部２２２によって弾性変形することでモータ１０への給電の実行、停止を切り替える部材であるためにその取付位置が重要となる部材であるところ、回路基板３０よりも先に接点部材４１，４２，５１，５２を位置決めすることができるため、動作不良等が生じにくい。 Further, the circuit board 30 is formed with notches 341, 342, and 343 into which the one ends 411 and 421 of the operating contact members 41 and 42 and the one ends 511 and 521 of the fixed contact members 51 and 52 are inserted. After the contact members 41, 42, 51, 52 are supported by the fixing portions 71, 72, 73, 74, the circuit board 30 can be attached from above. That is, the contact members 41, 42, 51, 52 are members whose mounting positions are important because they are members that switch between execution and stop of power supply to the motor 10 by elastic deformation by the cam portion 222. Since the contact members 41, 42, 51, 52 can be positioned before the circuit board 30, malfunctions and the like are unlikely to occur.

また、モータ１０と電源とを繋ぐ電気的配線の一部が回路基板３０に形成される導電パターンであるため、モータ１０の二つの入力端子１２，１３を大きく離して配置した上で、その間に歯車を設置することができる（本実施形態では三番車６３が配置される）。つまり、従来に比して装置の小型化を図ることができる。 In addition, since a part of the electrical wiring connecting the motor 10 and the power source is a conductive pattern formed on the circuit board 30, the two input terminals 12 and 13 of the motor 10 are arranged largely apart, A gear can be installed (the third wheel 63 is arranged in this embodiment). That is, it is possible to reduce the size of the apparatus as compared with the conventional case.

また、プレート７０には、回路基板３０を位置決めする位置決め突起７５（位置決め部）が設けられているため、回路基板３０と接点部材４１，４２，５１，５２（の一端）の取付位置精度が高まり、半田付け等による電気的接続作業が容易になる。 Further, since the plate 70 is provided with positioning protrusions 75 (positioning portions) for positioning the circuit board 30, the mounting position accuracy of the circuit board 30 and the contact members 41, 42, 51, 52 (one end thereof) is increased. Electrical connection work by soldering or the like is facilitated.

また、出力軸２１３を有する出力部材２１とカム部２２２を有するカム部材２２との係合が遊びをもった（ガタがある）ものとすれば、当該遊びの大きさ分、カム部２２２が出力部材２１の回転位置によらず自由に回転することができるため、カム部２２２における大径部２２２２と小径部２２２１の境界部分２２２３（傾斜面）に作動接点部材４１，４２が接触したとき、当該作動接点部材４１，４２の弾性力によってカム部材２２が出力部材２１とは別に回転する。つまり、モータ１０への給電の停止（モータ１０の停止）が素早く実行される。 Further, if the engagement between the output member 21 having the output shaft 213 and the cam member 22 having the cam portion 222 has play (there is play), the cam portion 222 outputs the amount corresponding to the size of the play. Since the member 21 can freely rotate regardless of the rotation position of the member 21, when the operation contact members 41 and 42 come into contact with the boundary portion 2223 (inclined surface) between the large diameter portion 2222 and the small diameter portion 2221 in the cam portion 222, The cam member 22 rotates separately from the output member 21 by the elastic force of the operating contact members 41 and 42. That is, the stop of power supply to the motor 10 (stop of the motor 10) is executed quickly.

以上、本発明の実施の形態について詳細に説明したが、本発明は上記実施の形態に何ら限定されるものではなく、本発明の要旨を逸脱しない範囲で種々の改変が可能である。 Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention.

例えば、上記実施形態では、作動接点部材４１，４２の一端４１１，４２１が端子側導電パターン３１に電気的に接続され、固定接点部材５１，５２の一端５１１，５２１が電源側導電パターン３２１，３２２に接続されていることを説明したが、その逆であってもよい。つまり、作動接点部材４１，４２の一端４１１，４２１が電源側導電パターン３２１，３２２に電気的に接続され、固定接点部材５１，５２の一端５１１，５２１が端子側導電パターン３１に接続されている構成としてもよい。 For example, in the above-described embodiment, the ends 411 and 421 of the operating contact members 41 and 42 are electrically connected to the terminal-side conductive pattern 31, and the ends 511 and 521 of the fixed contact members 51 and 52 are the power-side conductive patterns 321 and 322. However, the reverse is also possible. That is, the one ends 411 and 421 of the operating contact members 41 and 42 are electrically connected to the power supply side conductive patterns 321 and 322, and the one ends 511 and 521 of the fixed contact members 51 and 52 are connected to the terminal side conductive pattern 31. It is good also as a structure.

また、上記実施形態では、モータの動力によって回転する出力ユニット２０が、出力部材２１およびカム部材２２という二つの部材によって構成されていることを説明したが、出力軸２１３を有する一つの部材で構成することも可能である。 In the above embodiment, it has been described that the output unit 20 that is rotated by the power of the motor is configured by two members, that is, the output member 21 and the cam member 22. However, the output unit 20 is configured by one member having the output shaft 213. It is also possible to do.

１モータアクチュエータ
１０モータ
１２プラス入力端子
１３マイナス入力端子
２０出力ユニット
２１出力部材
２１２被押圧面
２１３出力軸
２１４凹部
２２カム部材
２２１凸部
２２２カム部
２２２１小径部
２２２２大径部
３０回路基板
３１端子側導電パターン
３２１第一電源側導電パターン
３２２第二電源側導電パターン
３４１，３４２，３４３切り込み
３５１，３５２，３５３ランド
３８位置決め孔
４１第一作動接点部材
４１１（第一作動接点部材の）一端
４１３（第一作動接点部材の）他端
４２第二作動接点部材
４２１（第二作動接点部材の）一端
４２３（第二作動接点部材の）他端
５１第一固定接点部材
５１１（第一固定接点部材の）一端
５１３（第一固定接点部材の）他端
５２第二固定接点部材
５２１（第二固定接点部材の）一端
５２３（第一固定接点部材の）他端
６７出力歯車
６７１係合部
６７１１係合突起
６７２空間
６７３先端部分
６７４カット面
７０プレート
７１，７２，７３，７４接点部材固定部
７５位置決め突起
Ｐカム部の回転中心軸を含む面 DESCRIPTION OF SYMBOLS 1 Motor actuator 10 Motor 12 Positive input terminal 13 Negative input terminal 20 Output unit 21 Output member 212 Pressed surface 213 Output shaft 214 Concave 22 Cam member 221 Convex 222 Cam part 2221 Small diameter part 2222 Large diameter part 30 Circuit board 31 Terminal side Conductive pattern 321 First power supply side conductive pattern 322 Second power supply side conductive pattern 341, 342, 343 Notch 351, 352, 353 Land 38 Positioning hole 41 First operation contact member 411 (first operation contact member) one end 413 The other end of one working contact member
42 Second working contact member 421 (second working contact member) one end 423 (second working contact member) other end 51 first fixed contact member 511 (first fixed contact member) one end 513 (first fixed contact member) The other end 52 The second fixed contact member 521 (The second fixed contact member) One end 523 (The first fixed contact member) The other end 67 The output gear 671 The engagement portion 6711 The engagement protrusion 672 The space 673 The tip portion 674 The cut surface 70 Plates 71, 72, 73, 74 Contact member fixing portion 75 Positioning projection P Surface including the rotation center axis of the cam portion

Claims

A motor having an input terminal for power supply;
An output unit that rotates with the power of the motor and that has an output shaft and a cam portion connected to the driven object;
A circuit board on which a terminal side conductive pattern electrically connected to one of the input terminals of the motor and a power source side conductive pattern electrically connected to a power source are formed;
One end is electrically connected to one of the terminal-side conductive pattern and the power-source-side conductive pattern, and the other end is in contact with the cam portion, an operating contact member;
One end is electrically connected to the other of the terminal side conductive pattern and the power source side conductive pattern, and the other end is arranged at a position facing the other end of the operating contact member, and the operation is in contact with the cam portion A fixed contact member that is in a contact state or a non-contact state with the operating contact member by changing the amount of elastic deformation of the contact member by the rotation of the cam portion;
With
Two sets of the operating contact member and the fixed contact member are provided so as to be plane-symmetric with respect to a plane including a rotation center axis of the cam portion as a plane of symmetry.

A plate for supporting the circuit board;
The motor actuator according to claim 1, wherein a part of one end side of the operating contact member and the fixed contact member is fixed to a contact member fixing portion formed on the plate.

The circuit board is formed with notches into which one ends of the operating contact member and the fixed contact member are inserted, and the contact members are electrically connected to the terminal side conductive pattern or the power source side conductive pattern on both sides in the width direction of the notch. The motor actuator according to claim 2, wherein a land for connection is formed.

4. The motor according to claim 1, wherein the motor includes two input terminals, and a gear for transmitting the power of the motor to the output unit is provided between the input terminals. 5. The motor actuator described.

The motor actuator according to any one of claims 2 to 4, wherein the plate is provided with a positioning portion for positioning the circuit board.

The output unit is
An output member having the output shaft and to which the power of the motor is transmitted;
A cam member that has the cam portion and rotates when the output member to which the power of the motor is transmitted rotates;
Including
The motor actuator according to any one of claims 1 to 5, wherein the output member and the cam member are engaged with each other with play in a circumferential direction.

One of the output member and the cam member is formed with a concave portion along the circumferential direction, and the other is formed with a convex portion along the circumferential direction entering the inside of the concave portion,
The motor actuator according to claim 6, wherein a circumferential length of the concave portion is longer than a circumferential length of the convex portion.