JP2007019254A - Motor-driven sliding variable resistor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a motor-driven sliding variable resistor having reduced in variation in working speed when a motor is driven and in the sense of operation when it is manually operated, and capable of maintaining performance for a long period of time. <P>SOLUTION: The resistor is provided with a frame 1 having a motor 2 attached on its one end; a driving pulley 3 coupled to a rotary shaft 2a of the motor 2; a driven pulley 5 arranged on the other end of the frame 1; a circular belt 6 stainedly hung over between the driving pulley 3 and the driven pulley 5; and a variable resistor 8 attached to the frame 1 so that a resistance value is adjusted by the movement of a moving body 7 coupled to the belt 6 in the longitudinal direction of the frame 1. A movable member 4 movable in the longitudinal direction of the frame 1 is provided at the other end of the frame 1, a pillar 11 for pivotally supporting the driven pulley 5 so as to be rotatable is fixed to the movable member 4, an attaching portion 4e is formed on a position different from the position where the pillar 11 is fixed to the movable member 4, and the movable member 4 is attached to the frame 1 at the attaching position 4e. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、音響機器用ミキサー等に使用されるモータ駆動式スライド型可変抵抗器に関する。   The present invention relates to a motor-driven slide variable resistor used in a mixer for audio equipment and the like.

従来のモータ駆動式スライド型可変抵抗器の構造としては、細長い断面Ｌ字状の枠体と、この枠体に設けられた直線状スリットに、操作レバーが挿通されたスライド型可変抵抗器と、この枠体の長手方向の一端に固定された回転軸の先端に歯付プーリが装着されたモータと、枠体の他端に回転可能に取り付けられた従動プーリと、これら歯付プーリと従動プーリの間に張架され、その中間部が前記操作レバーに固定されたリング状の歯付ベルトとを有する構成のものが知られている（例えば、特許文献１参照）。   As a structure of a conventional motor-driven slide type variable resistor, a long and narrow L-shaped frame, a slide type variable resistor in which an operation lever is inserted into a linear slit provided in the frame, A motor having a toothed pulley attached to the tip of a rotating shaft fixed to one end in the longitudinal direction of the frame, a driven pulley rotatably attached to the other end of the frame, and these toothed pulley and driven pulley There is known a structure having a ring-shaped toothed belt that is stretched between the two and whose intermediate portion is fixed to the operation lever (for example, see Patent Document 1).

この従来のモータ駆動式スライド型可変抵抗器の構造を図１１乃至図１３に示す。図１１は従来のモータ駆動式スライド型可変抵抗器の斜視図、図１２は従来のモータ駆動式スライド型可変抵抗器の従動プーリ取付け部の断面図、図１３は他の構成となる従動プーリ取付け部の斜視図である。   The structure of this conventional motor driven slide type variable resistor is shown in FIGS. 11 is a perspective view of a conventional motor-driven slide type variable resistor, FIG. 12 is a cross-sectional view of a driven pulley mounting portion of a conventional motor-driven slide type variable resistor, and FIG. 13 is a driven pulley mounting having another configuration. It is a perspective view of a part.

図において、４８は金属板を加工して形成された細長い断面Ｌ字形で、その平板部の中間部の長手方向に沿って直線状スリット４８Ｂを有する枠体であり、その平板部の中央下面には長手方向に沿ってスライド型可変抵抗器３２がビス４８Ａにより取り付けられると共に、上記長手方向の一端にはモータ３３がその回転軸３３Ａを垂直にしてモータ固定用ビス３３Ｂにより取り付けられ、その回転軸３３Ａの先端には歯付きプーリ３４が装着されている。   In the figure, 48 is an elongated L-shaped cross section formed by processing a metal plate, and is a frame body having a linear slit 48B along the longitudinal direction of the middle portion of the flat plate portion. The slide type variable resistor 32 is attached by a screw 48A along the longitudinal direction, and a motor 33 is attached to one end of the longitudinal direction by a motor fixing screw 33B with its rotating shaft 33A being vertical. A toothed pulley 34 is attached to the tip of 33A.

そして、枠体４８の他端には、上記歯付きプーリ３４と対向して従動プーリ３５が、枠体４８に固定ネジ４１で取付けられた円柱状の鋲４６に回転可能に取り付けられ、歯付きプーリ３４と従動プーリ３５の間にはリング状の歯付きベルト３６が張架されると共に、その中間部は樹脂製の結合体３８を介してスライド型可変抵抗器３２の操作レバー３７に固定されている。   The other end of the frame body 48 is rotatably attached to a columnar flange 46 attached to the frame body 48 with a fixing screw 41 so as to face the toothed pulley 34 and is toothed. A ring-shaped toothed belt 36 is stretched between the pulley 34 and the driven pulley 35, and an intermediate portion thereof is fixed to an operation lever 37 of the slide type variable resistor 32 via a resin coupling body 38. ing.

そして、このスライド型可変抵抗器３２は、手動操作式のスライド型可変抵抗器であり、上記枠体４８の平板部の長手方向の直線状スリット４８Ｂを通って上方へ突出した上部の操作レバー３７が、枠体４８の長手方向に直線動可能となるように枠体４８の下面に２箇所のビス４８Ａで取り付けられている。   The slide type variable resistor 32 is a manually operated slide type variable resistor, and is an upper operation lever 37 protruding upward through a linear slit 48B in the longitudinal direction of the flat plate portion of the frame 48. Are attached to the lower surface of the frame body 48 with two screws 48A so as to be linearly movable in the longitudinal direction of the frame body 48.

そして、上記スライド型可変抵抗器３２は、操作レバー３７の先端に装着されたつまみ（図示せず）を介して手動で動かす方法と枠体４８に取り付けられたモータ３３で回転軸３３Ａに装着された歯付きプーリ３４を回転させ、結合体３８を介して歯付きベルト３６に接続された操作レバー３７を動かす方法がある。   The slide type variable resistor 32 is attached to the rotary shaft 33A by a method of manually moving it through a knob (not shown) attached to the tip of the operation lever 37 and a motor 33 attached to the frame 48. There is a method in which the toothed pulley 34 is rotated and the operation lever 37 connected to the toothed belt 36 is moved via the coupling body 38.

そして、従動プーリ３５を回転可能に保持する鋲４６は、円柱状の鋲４６の底面に、固定用のネジ穴４６Ａを設け、上面には回転調整用の溝４６Ｂが設けられている。この鋲４６は枠体４８に固定ネジ４１で固定されている装着軸芯に対し、回転可能に保持している従動プーリ３５の回転軸芯が異なるように構成されている。   The flange 46 that rotatably holds the driven pulley 35 has a screw hole 46A for fixing on the bottom surface of the columnar flange 46, and a groove 46B for rotation adjustment on the top surface. The flange 46 is configured such that the rotation axis of the driven pulley 35 that is rotatably held is different from the mounting axis that is fixed to the frame body 48 by the fixing screw 41.

歯付きベルト３６の張り具合を調整する場合には、鋲４６は枠体４８下面から固定ネジ４１で仮止めされており、枠体４８に取り付けられる鋲４６の上面に設けられた回転調整用の溝４６Ｂを用いて、マイナスドライバー等で鋲４６を回転させることにより、従動プーリ３５の回転軸芯は鋲４６の装着軸芯と偏芯しているので、従動プーリ３５は枠体４８に取り付けられた鋲４６の装着軸芯を中心に円を描くように移動することとなり、従動プーリ３５と歯付きプーリ３４の間隔を可変させることができる。   When adjusting the tension of the toothed belt 36, the collar 46 is temporarily fixed from the lower surface of the frame body 48 with a fixing screw 41, and is used for rotation adjustment provided on the upper surface of the collar 46 attached to the frame body 48. By rotating the flange 46 with a slotted screwdriver or the like using the groove 46B, the rotational axis of the driven pulley 35 is eccentric with the mounting axis of the flange 46, so the driven pulley 35 is attached to the frame 48. Thus, it moves so as to draw a circle around the mounting axis of the flange 46, and the interval between the driven pulley 35 and the toothed pulley 34 can be varied.

つまり、歯付きプーリ３４と従動プーリ３５の間に張架した歯付きベルト３６の張り具合を容易に調整することができ、操作レバー３７の動作スピードを所望の状態に調整できる。そして、この所望の動作スピードとなるように調整した後、仮止め状態であった鋲４６を枠体４８下面の固定ネジ４１でさらに締め付け固定する。   That is, the tension of the toothed belt 36 stretched between the toothed pulley 34 and the driven pulley 35 can be easily adjusted, and the operation speed of the operation lever 37 can be adjusted to a desired state. And after adjusting so that it may become this desired operation speed, the collar 46 which was temporarily fixed is further fastened and fixed with the fixing screw 41 on the lower surface of the frame 48.

なお、図１３の他の構成となる従動プーリ取付け部の斜視図は、円柱状の鋲５２が装着される枠体５０の取り付け孔５０Ａを、枠体５０の直線状スリット５１（図示せず）と同じ長手方向に延びた長円形とした場合を示すものであり、歯付きプーリ３４と従動プーリ３５の間に張架した歯付きベルト３６の張り具合を、鋲５２の枠体５０への取付位置を上記取り付け孔５０Ａ内で長手方向に可変させて調整できるようにしたものであり、この構成によっても操作レバー３７の動作スピードを調整することができる。   13 is a perspective view of a driven pulley mounting portion having another configuration in FIG. 13, in which the mounting hole 50A of the frame body 50 to which the columnar rod 52 is mounted has a linear slit 51 (not shown) of the frame body 50. And the tension of the toothed belt 36 stretched between the toothed pulley 34 and the driven pulley 35 is attached to the frame body 50 of the collar 52. The position can be adjusted by changing the position in the mounting hole 50A in the longitudinal direction, and the operating speed of the operation lever 37 can also be adjusted by this configuration.

特開２００３−１７３９０３号公報JP 2003-173903 A

しかしながら、従来のモータ駆動式スライド型可変抵抗器の構造においては、鋲には回転する従動プーリが挿通されているため、使用していくうちに、鋲も少しずつ回転し、鋲の取り付け位置が変わることにより、調整したベルトのテンション（張り具合）が変わり、モータ駆動時の移動速度が変化していく虞があった。
また、複数個を並べて使用する場合に、個々の移動速度が大きく異なると、セットの品位を損なうという問題があった。 However, in the structure of a conventional motor-driven slide variable resistor, a rotating driven pulley is inserted through the bag, so that the bag rotates little by little as the rod is used, and the mounting position of the bag is By changing, there is a possibility that the tension of the adjusted belt changes and the moving speed when the motor is driven changes.
Further, when using a plurality of the devices arranged side by side, there is a problem that the quality of the set is impaired if the individual moving speeds are greatly different.

従って、本発明は上記した問題点を解決し、モータ駆動時の移動速度や手動動作時の操作感触にバラツキが少なく、長期間にわたって品位を維持することができるモータ駆動式スライド型可変抵抗器を提供することを目的とする。   Therefore, the present invention solves the above-mentioned problems, and provides a motor-driven slide type variable resistor that can maintain the quality over a long period of time with little variation in the moving speed during motor driving and the operation feeling during manual operation. The purpose is to provide.

上記課題を解決するために本発明では第１の解決手段として、一端にモータが取り付けられた板状部を有する枠体と、前記モータの回転軸に結合されたギヤ部を有する駆動プーリと、前記枠体の他端に回転可能に配設された従動プーリと、前記駆動プーリと従動プーリとの間に張架され、前記ギヤ部と噛み合う歯部を有する環状のベルトと、このベルトに結合された移動体が前記モータの回転に伴って前記枠体の長手方向に移動することにより抵抗値が調整されるように前記枠体に取り付けられた可変抵抗器部とを備え、前記枠体の他端には、該枠体の長手方向に移動可能な可動部材を設け、この可動部材に前記従動プーリを回転可能に軸支する支柱を固定すると共に、前記支柱の前記可動部材への固定位置とは異なる位置に取付部を形成し、この取付部で前記可動部材を前記枠体に取り付けた構成とした。   In order to solve the above problem, in the present invention, as a first solving means, a frame having a plate-like portion having a motor attached to one end thereof, a drive pulley having a gear portion coupled to the rotation shaft of the motor, A driven pulley rotatably disposed at the other end of the frame body, an annular belt stretched between the driving pulley and the driven pulley and having a tooth portion meshing with the gear portion, and coupled to the belt A variable resistor portion attached to the frame body so that the resistance value is adjusted by moving the movable body in the longitudinal direction of the frame body as the motor rotates. A movable member that can move in the longitudinal direction of the frame is provided at the other end, and a column that rotatably supports the driven pulley is fixed to the movable member, and the fixed position of the column to the movable member is fixed. The mounting part is formed at a position different from It said movable member has a configuration attached to the frame in the mounting portion.

また、第２の解決手段として、前記枠体は、前記板状部と略直交して前記移動体の移動方向に延びる側壁を有すると共に、前記可動部材には、前記枠体の板状部に重ねられる板状の積層部と前記枠体の側壁により案内されるガイド部を設けた構成とした。
また、第３の解決手段として、前記ガイド部は、前記積層部と略直交する板状に形成されると共に、前記枠体には、前記ガイド部を挿通可能なスリットが設けられ、このスリットにより前記ガイド部を案内して前記枠体の長手方向に移動可能とした構成とした。
また、第４の解決手段として、前記可動部材の前記積層部にネジにより固定される前記取付部を設けると共に、前記枠体の板状部には前記ネジを挿通可能な貫通部を設け、前記積層部を前記ネジにより前記貫通部を介して前記板状部に固定した構成とした。 Further, as a second solving means, the frame body has a side wall extending substantially perpendicular to the plate-like portion and extending in the moving direction of the moving body, and the movable member has a plate-like portion of the frame body. It was set as the structure which provided the guide part guided by the plate-shaped laminated part and the side wall of the said frame which were piled up.
Further, as a third solving means, the guide portion is formed in a plate shape substantially orthogonal to the stacked portion, and the frame body is provided with a slit through which the guide portion can be inserted. The guide portion is guided to be movable in the longitudinal direction of the frame body.
Further, as a fourth solving means, the attachment portion fixed to the laminated portion of the movable member with a screw is provided, and the plate-like portion of the frame body is provided with a through portion through which the screw can be inserted, The laminated part was fixed to the plate-like part via the penetrating part with the screw.

また、第５の解決手段として、前記可動部材は金属板からなり、この金属板を折り曲げ加工することにより前記積層部と前記ガイド部を形成し、前記可動部材の積層部には、前記ネジを取り付けるためのネジ溝部を設け、前記枠体の板状部を挟んで前記ネジを前記ネジ溝部に締め付けたときに、前記ガイド部が前記枠体の側壁側に押し付けられるように、前記ガイド部を前記側壁と前記ネジ溝部との間に位置させた構成とした。
また、第６の解決手段として、前記支柱により前記可動部材に軸支される前記従動プーリは、前記支柱が挿通されて回転可能に支持される筒状の軸部と、この軸部よりも大きな径を有し、前記ベルトが外周部に張架される筒状のベルト張架部とを備え、このベルト張架部の内周部と前記支柱との間に互いの当接を防止する空間部を設けた構成とした。 Further, as a fifth solution, the movable member is made of a metal plate, and the laminated portion and the guide portion are formed by bending the metal plate, and the screw is attached to the laminated portion of the movable member. A screw groove for mounting is provided, and when the screw is fastened to the screw groove with the plate-like portion of the frame interposed therebetween, the guide is arranged so that the guide is pressed against the side wall of the frame. It was set as the structure located between the said side wall and the said screw groove part.
Further, as a sixth solution, the driven pulley that is pivotally supported by the movable member by the support column has a cylindrical shaft portion that is rotatably supported through the support column, and is larger than the shaft portion. A space that has a diameter and has a cylindrical belt stretcher on which the belt is stretched on the outer periphery, and prevents contact between the inner periphery of the belt stretcher and the support column It was set as the structure which provided the part.

上述したように、本発明のモータ駆動式スライド型可変抵抗器は、一端にモータが取り付けられた板状部を有する枠体と、モータの回転軸に結合されたギヤ部を有する駆動プーリと、枠体の他端に回転可能に配設された従動プーリと、駆動プーリと従動プーリとの間に張架され、ギヤ部と噛み合う歯部を有する環状のベルトと、ベルトに結合された移動体がモータの回転に伴って枠体の長手方向に移動することにより抵抗値が調整されるように枠体に取り付けられた可変抵抗器部とを備え、枠体の他端には、枠体の長手方向に移動可能な可動部材を設け、可動部材に従動プーリを回転可能に軸支する支柱を固定すると共に、支柱の可動部材への固定位置とは異なる位置に取付部を形成し、取付部で可動部材を枠体に取り付けたことから、支柱の可動部材への固定位置とは異なる位置で、可動部材を枠体に取り付けているので、その取り付けが、従動プーリの回転に起因して緩むことはなく、初期状態でベルトのテンションを調整して可動部材を枠体に取り付けることによって、移動速度や操作感触等のバラツキを少なくできて、長期間にわたって高品位を保つことができる。   As described above, the motor-driven slide variable resistor of the present invention includes a frame having a plate-like portion with a motor attached to one end thereof, a drive pulley having a gear portion coupled to the rotation shaft of the motor, A driven pulley rotatably disposed at the other end of the frame, an annular belt having a tooth portion that is stretched between the drive pulley and the driven pulley and meshes with the gear portion, and a moving body coupled to the belt And a variable resistor portion attached to the frame so that the resistance value is adjusted by moving in the longitudinal direction of the frame along with the rotation of the motor. A movable member movable in the longitudinal direction is provided, and a support column that rotatably supports the driven pulley is fixed, and a mounting portion is formed at a position different from the fixed position of the support column to the movable member. Since the movable member was attached to the frame with Since the movable member is attached to the frame at a position different from the fixed position to the movable member, the attachment does not loosen due to the rotation of the driven pulley, and the belt tension is adjusted in the initial state. By attaching the movable member to the frame, it is possible to reduce variations in moving speed, operational feeling, etc., and to maintain high quality over a long period of time.

また、枠体は、板状部と略直交して移動体の移動方向に延びる側壁を有すると共に、可動部材には、枠体の板状部に重ねられる板状の積層部と枠体の側壁により案内されるガイド部を設けたことから、可動部材のガイド部を枠体の側壁に案内させて、ベルトのテンションを調整できるので、スムーズに可動部材を移動させて枠体に取り付けることができる。
また、ガイド部は、積層部と略直交する板状に形成されると共に、枠体には、ガイド部を挿通可能なスリットが設けられ、スリットによりガイド部を案内して枠体の長手方向に移動可能としたことから、スリットにより、可動部材のガイド部を枠体の長手方向に案内できるので、ベルトのテンションを調整する際の作業性を一層向上させることができると共に、移動体の移動方向とベルトの張りとの傾きが少ないものとすることができる。
また、可動部材の積層部にネジにより固定される取付部を設けると共に、枠体の板状部にはネジを挿通可能な貫通部を設け、積層部をネジにより貫通部を介して板状部に固定したことから、ネジの締め付け位置を貫通部で調整することができ、容易にテンションを調整できるので、可動部材を枠体に簡単に固定することができる。 The frame has side walls that extend substantially perpendicular to the plate-shaped portion and extend in the moving direction of the moving body, and the movable member includes a plate-shaped laminated portion that overlaps the plate-shaped portion of the frame and the side walls of the frame. Since the guide portion guided by the guide is provided, the guide portion of the movable member can be guided to the side wall of the frame body and the belt tension can be adjusted, so that the movable member can be smoothly moved and attached to the frame body. .
The guide portion is formed in a plate shape substantially orthogonal to the laminated portion, and the frame body is provided with a slit through which the guide portion can be inserted, and the guide portion is guided by the slit in the longitudinal direction of the frame body. Since it is movable, the guide portion of the movable member can be guided in the longitudinal direction of the frame body by the slit, so that the workability when adjusting the belt tension can be further improved and the moving direction of the moving body And the inclination of the belt tension can be reduced.
In addition, a mounting portion fixed by a screw is provided in the laminated portion of the movable member, and a penetration portion through which the screw can be inserted is provided in the plate-like portion of the frame body. Since the screw tightening position can be adjusted at the penetrating portion and the tension can be easily adjusted, the movable member can be easily fixed to the frame.

また、可動部材は金属板からなり、金属板を折り曲げ加工することにより積層部とガイド部を形成し、可動部材の積層部には、ネジを取り付けるためのネジ溝部を設け、枠体の板状部を挟んでネジをネジ溝部に締め付けたときに、ガイド部が枠体の側壁側に押し付けられるように、ガイド部を側壁とネジ溝部との間に位置させたことから、ネジを締め付けたときに、ガイド部が枠体の側壁部に押し付けられて可動部材が動きにくくなり、調整したテンションを維持して可動部材を枠体に固定することができる。
また、支柱により可動部材に軸支される従動プーリは、支柱が挿通されて回転可能に支持される筒状の軸部と、軸部よりも大きな径を有し、ベルトが外周部に張架される筒状のベルト張架部とを備え、ベルト張架部の内周部と支柱との間に互いの当接を防止する空間部を設けたことから、従動プーリのベルト張架部と支柱との間に大きな空間を設けるようにしたので、ベルトが停止した際の衝撃が従動プーリを介して支柱に伝わり、支柱の固定部（カシメ部）が緩むのを防止することができる。 The movable member is made of a metal plate, and a laminated portion and a guide portion are formed by bending the metal plate. The laminated portion of the movable member is provided with a screw groove portion for attaching a screw, and is formed into a plate shape of the frame. When the screw is tightened because the guide part is positioned between the side wall and the screw groove part so that the guide part is pressed against the side wall side of the frame when the screw is tightened in the screw groove part. Furthermore, the guide member is pressed against the side wall portion of the frame body, and the movable member becomes difficult to move, and the movable member can be fixed to the frame body while maintaining the adjusted tension.
In addition, the driven pulley that is pivotally supported by the movable member by the support column has a cylindrical shaft portion that is rotatably supported by inserting the support column, and has a larger diameter than the shaft portion, and the belt is stretched around the outer periphery portion. A cylindrical belt stretching portion, and a space portion for preventing mutual contact between the inner peripheral portion of the belt stretching portion and the support column is provided. Since a large space is provided between the support and the support, the impact when the belt stops is transmitted to the support through the driven pulley, and it is possible to prevent the support fixing part (caulking part) from loosening.

以下、本発明の実施の形態を図１乃至図１０に示す。図１は本発明のモータ駆動式スライド型可変抵抗器を示す斜視図、図２は本発明のモータ駆動式スライド型可変抵抗器を示す分解斜視図、図３は本発明のモータ駆動式スライド型可変抵抗器のモータ側の拡大斜視図、図４は本発明のモータ駆動式スライド型可変抵抗器のモータ側の拡大分解斜視図、図５は本発明のモータ駆動式スライド型可変抵抗器の従動プーリ側の拡大斜視図、図６は本発明のモータ駆動式スライド型可変抵抗器の従動プーリ側の拡大分解斜視図、図７は本発明のモータ駆動式スライド型可変抵抗器のモータ側に移動した状態の移動体と可変抵抗器部の説明図、図８は本発明のモータ駆動式スライド型可変抵抗器の従動プーリ側に移動した状態の移動体と可変抵抗器部の説明図、図９は本発明のモータ駆動式スライド型可変抵抗器の可動部材と従動プーリと支柱との取り付け状態を示す説明図、図１０は本発明のモータ駆動式スライド型可変抵抗器の可動部材と従動プーリと支柱との取り付け状態の他の実施例を示す説明図である。   Embodiments of the present invention are shown in FIGS. 1 is a perspective view showing a motor-driven slide type variable resistor of the present invention, FIG. 2 is an exploded perspective view showing a motor-driven slide type variable resistor of the present invention, and FIG. 3 is a motor-driven slide type of the present invention. 4 is an enlarged perspective view of the variable resistor on the motor side, FIG. 4 is an enlarged exploded perspective view of the motor driven slide type variable resistor of the present invention, and FIG. 5 is a follower of the motor driven slide type variable resistor of the present invention. FIG. 6 is an enlarged exploded perspective view of the driven pulley side of the motor driven slide type variable resistor of the present invention, and FIG. 7 is moved to the motor side of the motor driven slide type variable resistor of the present invention. FIG. 8 is an explanatory diagram of the movable body and the variable resistor section, and FIG. 8 is an explanatory diagram of the movable body and the variable resistor section in a state where the movable body is moved to the driven pulley side of the motor-driven slide variable resistor of the present invention. Is a motor driven slide type of the present invention FIG. 10 is an explanatory view showing the mounting state of the movable member of the resistor, the driven pulley, and the column; FIG. 10 is another embodiment of the mounting state of the movable member, driven pulley, and column of the motor-driven slide type variable resistor of the present invention. It is explanatory drawing which shows.

図１及び図２において、本発明のモータ駆動式スライド型可変抵抗器は、板状部を有し略コ字状に折り曲げられて形成された金属板からなる枠体１と、この枠体１の一端側に取り付けられたモータ２と、このモータ２の回転軸に結合された駆動プーリ３と、枠体１の他端側に配設された可動部材４と、この可動部材４に軸支された従動プーリ５と、駆動プーリ３と従動プーリ５との間に張架された環状のベルト６と、このベルト６に結合された移動体７と、この移動体７がモータ２の回転に伴って枠体１の長手方向に移動することにより抵抗値が調整されるように枠体１に取り付けられた可変抵抗器部８とから主に構成されている。   1 and 2, a motor-driven slide type variable resistor according to the present invention includes a frame 1 made of a metal plate having a plate-like portion and formed by being bent into a substantially U-shape, and the frame 1 A motor 2 attached to one end of the motor 2, a drive pulley 3 coupled to the rotation shaft of the motor 2, a movable member 4 disposed on the other end of the frame 1, and a shaft supported by the movable member 4. Driven pulley 5, an annular belt 6 stretched between the drive pulley 3 and the driven pulley 5, a moving body 7 coupled to the belt 6, and the moving body 7 is used to rotate the motor 2. Along with this, it is mainly composed of a variable resistor portion 8 attached to the frame 1 so that the resistance value is adjusted by moving in the longitudinal direction of the frame 1.

枠体１は、金属板を打ち抜き折り曲げて断面が略コ字状の長尺状に形成されており、中央に平板状の板状部１ａを有し、この板状部１ａの長手方向に沿った両側部には板状部１ａと略直交して互いに対向する一対の側壁１ｂ、１ｂを有している。また、一対の側壁１ｂ、１ｂの上面側の両側には、丸孔１ｄを有する一対の架橋部１ｃ、１ｃが設けられている。   The frame 1 is formed by punching and bending a metal plate to form a long plate having a substantially U-shaped cross section, and has a plate-like plate-like portion 1a at the center, along the longitudinal direction of the plate-like portion 1a. Both side portions have a pair of side walls 1b and 1b that are substantially orthogonal to the plate-like portion 1a and face each other. Moreover, a pair of bridge | crosslinking parts 1c and 1c which have the round hole 1d are provided in the both sides of the upper surface side of a pair of side wall 1b and 1b.

また、板状部１ａ中央には、長手方向に延設された矩形状の長窓孔１ｅが設けられており、この長窓孔１ｅに後述する可変抵抗器部８のレバー１４ａが挿通され、長手方向に移動可能に配設されるものとなっている。また、図４に示すように長窓孔１ｅの一端側には、長窓孔１ｅに隣接して下方へ折り曲げ形成されたＴ字状の取付片１ｆが設けられており、また、図６に示すように長窓孔１ｅの他端側には、長窓孔１ｅ内の下方へ折り曲げ形成された、同じくＴ字状の取付片１ｇが設けられている。   Further, a rectangular long window hole 1e extending in the longitudinal direction is provided at the center of the plate-like part 1a, and a lever 14a of the variable resistor part 8 described later is inserted into the long window hole 1e. It is arranged to be movable in the longitudinal direction. Also, as shown in FIG. 4, a T-shaped attachment piece 1f bent downward is provided adjacent to the long window hole 1e on one end side of the long window hole 1e. As shown, a T-shaped attachment piece 1g, which is bent downward in the long window hole 1e, is provided on the other end side of the long window hole 1e.

そして、これら取付片１ｆ、１ｇは、後述する可変抵抗器部８の金属ケース１３の上面側に設けられた、一対の取付用のＴ字孔１３ｂ、１３ｂに挿入されるものとなり、互いのＴ字状の広幅部分が挿入された後、枠体１が長手方向に若干スライド移動されて（図２の右方向）、互いのＴ字状の細幅部分同士が係合された後、板状部１ａの他端部に設けられた係止片１ｈの自由端側を、図示はしないが下方へ折り曲げることにより、取付片１ｆ、１ｇとＴ字孔１３ｂ、１３ｂとが互いに嵌合した状態で、枠体１と可変抵抗器部８とが上下左右に抜け止めされて一体的に係合されるものとなっている。   These mounting pieces 1f and 1g are inserted into a pair of mounting T-shaped holes 13b and 13b provided on the upper surface side of the metal case 13 of the variable resistor portion 8 to be described later. After the character-shaped wide portion is inserted, the frame body 1 is slightly slid in the longitudinal direction (right direction in FIG. 2), and the T-shaped narrow portions are engaged with each other, and then the plate shape In the state where the attachment pieces 1f and 1g and the T-shaped holes 13b and 13b are fitted to each other by bending the free end side of the locking piece 1h provided at the other end of the portion 1a downward (not shown). The frame 1 and the variable resistor portion 8 are prevented from coming off vertically and horizontally and are integrally engaged.

また、図３及び図４に示すように、枠体１の板状部１ａの一端側には、モータ２の取付用としての、回転軸２ａを挿通するやや大きめの丸穴１ｉと、ネジ止め用のやや小さめの一対の丸穴１ｊ、１ｊとが設けられており、丸穴１ｉにモータ２の回転軸２ａが挿通されて、丸穴１ｊ、１ｊを介してネジ９が締め付けられることによりモータ２が枠体１に取り付けられている。   Further, as shown in FIGS. 3 and 4, a slightly larger round hole 1 i for inserting the rotating shaft 2 a for mounting the motor 2 is attached to one end side of the plate-like portion 1 a of the frame 1, and screws are attached. A pair of slightly smaller round holes 1j, 1j for use are provided, and the motor 2 is tightened through the round holes 1j, 1j by inserting the rotating shaft 2a of the motor 2 into the round holes 1i. 2 is attached to the frame 1.

また、モータ２の回転軸２ａには、合成樹脂等の絶縁材からなり、円柱状の外周部に凹凸状のギヤ部３ａを有する駆動プーリ３が接着あるいは圧入等の方法で結合されている。また、駆動プーリ３の上側には、円柱状で同じく合成樹脂等の絶縁材からなるスペーサ１０が回転軸２ａに接着あるいは圧入等の方法で結合されている。このスペーサ１０は、ギヤ部３ａに噛み合うように張架される環状のベルト６がギヤ部３ａから外れるのを防止する抜け止め部材となっている。   A driving pulley 3 made of an insulating material such as synthetic resin and having a concavo-convex gear portion 3a on a cylindrical outer peripheral portion is coupled to the rotating shaft 2a of the motor 2 by bonding or press-fitting. A cylindrical spacer 10 made of an insulating material such as synthetic resin is coupled to the rotating shaft 2a on the upper side of the driving pulley 3 by a method such as adhesion or press fitting. The spacer 10 serves as a retaining member that prevents the annular belt 6 stretched so as to mesh with the gear portion 3a from being detached from the gear portion 3a.

また、図５及び図６に示すように、枠体１の板状部１ａの他端側には、やや大きめの長孔１ｋと、やや小さめの長孔１ｌが設けられている。そして、これら長孔１ｋ、１ｌは、板状部の長手方向に沿って長くなるように形成された貫通部となっており、これら貫通部は、板状部の長手方向に沿って長く切り欠かれた切り欠きによって構成したものでもよい。この場合、貫通部たる長孔１ｋとは、従動プーリ５の筒状の下部を挿通可能なものであり、貫通部たる長孔１ｌは、ネジ１２のネジ山部を挿通可能であり、かつ、長孔１ｌの短手方向寸法がネジ１２の頭部よりも小さく設定されている。また、長窓孔１ｅの他端側で係止片１ｈが設けられた側とは反対側、すなわち、長孔１ｌが設けられた側の板状部１ａと側壁１ｂとの連設部には、長溝からなるスリット１ｍが設けられている。   Further, as shown in FIGS. 5 and 6, a slightly larger elongated hole 1 k and a slightly smaller elongated hole 1 l are provided on the other end side of the plate-like portion 1 a of the frame body 1. And these long holes 1k and 1l are penetration parts formed so that it may become long along the longitudinal direction of a plate-like part, and these penetration parts are notched long along the longitudinal direction of a plate-like part. It may be constituted by a cutout made. In this case, the long hole 1k serving as the penetrating portion is capable of being inserted through the cylindrical lower portion of the driven pulley 5, the long hole 11 serving as the penetrating portion is capable of being inserted through the thread portion of the screw 12, and The short dimension of the long hole 1 l is set smaller than the head of the screw 12. The other end side of the long window hole 1e is opposite to the side where the locking piece 1h is provided, that is, the side where the plate-like part 1a and the side wall 1b are provided on the side where the long hole 1l is provided. A slit 1m comprising a long groove is provided.

可動部材４は、金属板を打ち抜き折り曲げて形成されており、枠体１の板状部１ａに重ねられる板状の積層部４ａと、この積層部４ａの一側部から直角方向に折り曲げられた連結部４ｂと、この連結部４ｂの先端側に積層部４ａの上面側よりも突出する方向に延設され、積層部４ａと略直交する板状で略Ｌ字状に設けられたガイド部４ｃとを有している。   The movable member 4 is formed by punching and bending a metal plate. The movable member 4 is bent in a direction perpendicular to a plate-like laminated portion 4a that is stacked on the plate-like portion 1a of the frame 1 and one side portion of the laminated portion 4a. A connecting portion 4b, and a guide portion 4c that extends in a direction protruding from the upper surface side of the laminated portion 4a at the tip end side of the connecting portion 4b, and is provided in a substantially L shape in a plate shape substantially orthogonal to the laminated portion 4a. And have.

また、板状の積層部４ａには、連結部４ｂから離れた端部側に従動プーリ５を回転可能に軸支する支柱１１が嵌合される嵌合孔４ｄが設けられ、また、積層部４ａの連結部４ｂ寄りには、可動部材４をネジ１２により枠体１に固定するネジ溝部４ｅからなる取付部が設けられている。尚、この場合、嵌合孔４ｄとネジ溝部４ｅは、枠体１の板状部１ａに設けられた長孔１ｋと長孔１ｌにそれぞれ対応する位置に形成されている。   In addition, the plate-like laminated portion 4a is provided with a fitting hole 4d into which a support column 11 that rotatably supports the driven pulley 5 is fitted, which is away from the connecting portion 4b. Near the connecting portion 4b of 4a, there is provided an attachment portion comprising a screw groove portion 4e for fixing the movable member 4 to the frame body 1 with screws 12. In this case, the fitting hole 4d and the screw groove 4e are formed at positions corresponding to the long hole 1k and the long hole 1l provided in the plate-like part 1a of the frame 1, respectively.

可動部材４は、Ｌ字状のガイド部４ｃが枠体１のスリット１ｍに挿通されて枠体１の板状部１ａの下面側に配設され、このガイド部４ｃがスリット１ｍ及び側壁１ｂにより案内されて、枠体１の他端部で枠体１の長手方向に所定の範囲で移動可能となっている。また、可動部材４の嵌合孔４ｄには、枠体１の長孔１ｋを介して金属材からなる支柱１１が鳩目かしめ等の手段により固着されており、この支柱１１に、合成樹脂等の絶縁材からなり、円柱状の外周部に凹状のベルト受部５ａを有する従動プーリ５が挿入され、従動プーリ５が支柱１１に回転可能に軸支されている（図９参照）。   The movable member 4 has an L-shaped guide portion 4c inserted through the slit 1m of the frame body 1 and is disposed on the lower surface side of the plate-like portion 1a of the frame body 1. The guide portion 4c is formed by the slit 1m and the side wall 1b. It is guided and can move within a predetermined range in the longitudinal direction of the frame 1 at the other end of the frame 1. Further, a support 11 made of a metal material is fixed to the fitting hole 4d of the movable member 4 through a long hole 1k of the frame 1 by means such as eyelet caulking, and the support 11 is made of synthetic resin or the like. A driven pulley 5 made of an insulating material and having a concave belt receiving portion 5a is inserted into a cylindrical outer peripheral portion, and the driven pulley 5 is rotatably supported by a support 11 (see FIG. 9).

そして、可動部材４は、ネジ１２が枠体１の長孔１ｌを介してネジ溝部４ｅに締め付けられることにより枠体１の他端側に固定されるものとなっている。すなわち、支柱１１の可動部材４への固定位置である嵌合孔４ｄとは異なる位置に、ネジ溝部４ｅからなる取付部を形成し、この取付部で可動部材４を枠体１にネジ１２により締め付けることにより、可動部材４が枠体１に取り付けられるものとなっている。   The movable member 4 is fixed to the other end side of the frame body 1 by tightening the screws 12 into the screw groove portions 4 e through the long holes 11 of the frame body 1. That is, an attachment portion including a screw groove portion 4e is formed at a position different from the fitting hole 4d, which is a position where the support column 11 is fixed to the movable member 4, and the movable member 4 is attached to the frame 1 with the screw 12 at this attachment portion. The movable member 4 is attached to the frame 1 by tightening.

このように、本実施例では、可動部材４は、枠体１の板状部１ａに重ねられる板状の積層部４ａを有しており、この積層部４ａにネジ１２により固定される取付部となるネジ溝部４ｅを設けると共に、板状部１ａにこのネジ１２を挿通可能な長孔１ｌ等からなる貫通部を設けて、積層部４ａをネジ１２により長孔１ｌ等の貫通部を介して板状部１ａに固定するようにしてあるので、ネジ１２の締め付け位置を長孔１ｌ等の貫通部の長手方向における貫通部（孔内）の範囲で調整することができるようになっている。   Thus, in this embodiment, the movable member 4 has the plate-like laminated portion 4a that is overlaid on the plate-like portion 1a of the frame 1, and the mounting portion that is fixed to the laminated portion 4a with the screws 12. A screw groove portion 4e is formed, and a plate portion 1a is provided with a through portion made of a long hole 1l or the like through which the screw 12 can be inserted. Since it is fixed to the plate-like part 1a, the tightening position of the screw 12 can be adjusted within the range of the through part (in the hole) in the longitudinal direction of the through part such as the long hole 1l.

したがって、支柱１１に軸支された従動プーリ５の位置を、可動部材４と共に枠体１の板状部１ａの長手方向に移動（微調整）できることから、駆動プーリ３と従動プーリ５との間に張架される、後述する環状のベルト６のテンションを容易に調整できるものとなっている。
また、このとき可動部材４には、枠体１の側壁１ｂにより案内されるガイド部４ｃが設けられており、この可動部材４のガイド部４ｃを枠体１の側壁１ｂに案内させて、ベルト６のテンションを調整できるので、スムーズに可動部材４を移動させて枠体１に取り付けることができるものとなっている。 Therefore, since the position of the driven pulley 5 pivotally supported by the support column 11 can be moved (finely adjusted) along with the movable member 4 in the longitudinal direction of the plate-like portion 1 a of the frame body 1, the drive pulley 3 and the driven pulley 5 can be moved. It is possible to easily adjust the tension of an annular belt 6 to be described later.
At this time, the movable member 4 is provided with a guide portion 4c guided by the side wall 1b of the frame body 1. The guide portion 4c of the movable member 4 is guided to the side wall 1b of the frame body 1 so that the belt Since the tension of 6 can be adjusted, the movable member 4 can be smoothly moved and attached to the frame 1.

また、枠体１には、ガイド部４ｃを挿通可能なスリット１ｍが設けられており、このスリット１ｍにより、可動部材４のガイド部４ｃを枠体１の長手方向に案内できるので、ベルト６のテンションを調整する際の作業性を一層向上させることができると共に、可動部材４に軸支された従動プーリ５の傾きを抑制できるので、後述するベルト６に結合された移動体７の移動方向とベルト６の張りとの傾きを少なくすることができるものとなっている。   Further, the frame body 1 is provided with a slit 1m through which the guide portion 4c can be inserted, and the guide portion 4c of the movable member 4 can be guided in the longitudinal direction of the frame body 1 by the slit 1m. The workability at the time of adjusting the tension can be further improved, and the inclination of the driven pulley 5 pivotally supported by the movable member 4 can be suppressed, so that the moving direction of the moving body 7 coupled to the belt 6 described later can be reduced. The inclination with the tension of the belt 6 can be reduced.

また、本実施例では、可動部材４に設けられたガイド部４ｃが、枠体１の側壁１ｂと、ネジ溝部４ｅとの中間位置に位置するように形成されていることから、可動部材４を、枠体１の板状部１ａを挟んでネジ１２によりネジ溝部４ｅに締め付けるようにしたときに、ネジ１２が時計方向（図５、図６における図示右回り方向）に回転されるので、ガイド部４ｃが枠体１の側壁１ｂに押し付けられるような力が作用するものとなっている。
このため、ネジ１２を締め付けたときに、ガイド部４ｃが枠体１の側壁１ｂに押し付けられて可動部材４が動きにくくなり、調整したテンションを維持して可動部材４を枠体１に固定することができるものとなっている。 In the present embodiment, the guide member 4c provided on the movable member 4 is formed so as to be positioned at an intermediate position between the side wall 1b of the frame body 1 and the screw groove portion 4e. When the plate-like portion 1a of the frame body 1 is sandwiched and fastened to the screw groove portion 4e by the screw 12, the screw 12 is rotated clockwise (the clockwise direction in FIGS. 5 and 6). A force is applied so that the portion 4 c is pressed against the side wall 1 b of the frame 1.
For this reason, when the screw 12 is tightened, the guide portion 4 c is pressed against the side wall 1 b of the frame body 1 to make the movable member 4 difficult to move, and the adjusted tension is maintained and the movable member 4 is fixed to the frame body 1. It has become something that can be.

駆動プーリ３と従動プーリ５との間には、可撓性の合成樹脂材やゴム材等からなる環状のベルト６が張架されている。また、このベルト６の内周には、駆動プーリ３のギヤ部３ａと噛み合う複数の歯部６ａが形成されており、また、ベルト６の所定箇所には、合成樹脂等の絶縁材からなる移動体７が結合されている。そして、ベルト６は、一端側が駆動プーリ３のギヤ部３ａと歯部６ａが噛み合うと共に、他端側が従動プーリ５の凹状のベルト受部５ａに嵌合された状態で駆動プーリ３と従動プーリ５間に回動可能に張架されている。   An annular belt 6 made of a flexible synthetic resin material or rubber material is stretched between the driving pulley 3 and the driven pulley 5. A plurality of teeth 6a that mesh with the gear 3a of the drive pulley 3 are formed on the inner periphery of the belt 6, and a predetermined portion of the belt 6 is made of an insulating material such as synthetic resin. The body 7 is joined. The belt 6 has one end side meshing with the gear portion 3 a and the tooth portion 6 a of the driving pulley 3, and the other end side being engaged with the concave belt receiving portion 5 a of the driven pulley 5. It is stretched between them so that it can rotate.

移動体７は、ベルト６の歯部６ａに係合する係合部７ａと、この係合部７ａに対向する側に設けられたレバー支持部７ｂとを有している。この移動体７は、係合部７ａによりベルト６の所定箇所に結合されると共に、レバー支持部７ｂに後述する可変抵抗器部８のレバー１４ａが嵌合されて、ベルト６の回動に伴って、移動体７が枠体１の長手方向にスライド移動可能となり、この移動体７の移動に伴いレバー１４ａがスライド移動することで可変抵抗器部８の抵抗値が変化して出力信号の調整が行われるものとなっている。   The moving body 7 has an engaging portion 7a that engages with the tooth portion 6a of the belt 6, and a lever support portion 7b that is provided on the side facing the engaging portion 7a. The moving body 7 is coupled to a predetermined portion of the belt 6 by an engaging portion 7a, and a lever 14a of a variable resistor portion 8 (to be described later) is fitted to the lever supporting portion 7b. Thus, the movable body 7 is slidable in the longitudinal direction of the frame 1, and the lever 14a is slid along with the movement of the movable body 7 so that the resistance value of the variable resistor unit 8 changes and the output signal is adjusted. Is to be done.

可変抵抗器部８は、図７及び８に示すように、金属板等を折り曲げることにより矩形状の箱型に形成された金属ケース１３と、この金属ケース１３内の長手方向に橋渡された棒状の一対の金属シャフト１３ａ、１３ａと、この金属シャフト１３ａ、１３ａに摺動可能に保持された合成樹脂製の摺動子受１４と、この摺動子受１４の上面側に突出されたレバー１４ａと、摺動子受１４の一側面に設けられ、図示しない帯状の抵抗体及び集電体と摺接する導電性の薄板金属板からなる摺動子１５とから構成されている。   As shown in FIGS. 7 and 8, the variable resistor portion 8 includes a metal case 13 formed in a rectangular box shape by bending a metal plate and the like, and a rod-like shape bridged in the longitudinal direction in the metal case 13. A pair of metal shafts 13a, 13a, a synthetic resin slider receiver 14 slidably held on the metal shafts 13a, 13a, and a lever 14a protruding from the upper surface side of the slider receiver 14 And a slider 15 made of a conductive sheet metal plate that is provided on one side surface of the slider receiver 14 and is in sliding contact with a strip-shaped resistor (not shown) and a current collector.

また、金属シャフト１３ａ、１３ａの長手方向の両端部には、ゴム材等の弾性材からなる緩衝部材であるストッパ１６が設けられており、モータ２の回転に伴って、摺動子受１４が一対の金属シャフト１３ａ、１３ａに案内されて、枠体１の長手方向の両端近傍までスライド移動した際に、このストッパ１６に摺動子受１４が当たることでその移動が停止されるようになっている。このストッパ１６により摺動子受１４の移動停止時の衝突音の発生を防止している。   Further, stoppers 16 which are buffer members made of an elastic material such as a rubber material are provided at both ends in the longitudinal direction of the metal shafts 13a, 13a, and the slider receiver 14 is moved along with the rotation of the motor 2. When the slider 16 is guided by the pair of metal shafts 13a and 13a and slidably moves to the vicinity of both ends in the longitudinal direction of the frame body 1, the movement is stopped by the contact of the slider receiver 14 with the stopper 16. ing. The stopper 16 prevents the occurrence of a collision sound when the slider receiver 14 stops moving.

この可変抵抗器部８は、金属ケース１３の上面側に設けられた一対の取付用のＴ字孔１３ｂ、１３ｂに、枠体１の板状部１ａに形成された一対の取付片１ｆ、１ｇが挿入されて、互いのＴ字状の広幅部分が挿入された後、枠体１が長手方向に若干スライド移動されて（図２の右方向）、互いのＴ字状の細幅部分同士が係合された後、板状部１ａの他端部に設けられた係止片１ｈを下方へ折り曲げることにより、取付片１ｆ、１ｇとＴ字孔１３ｂ、１３ｂとが互いに嵌合した状態で、枠体１と可変抵抗器部８とが上下左右に抜け止めされて一体的に係合されるものとなっている。   The variable resistor portion 8 includes a pair of mounting pieces 1 f and 1 g formed in the plate-like portion 1 a of the frame 1 in a pair of mounting T-shaped holes 13 b and 13 b provided on the upper surface side of the metal case 13. Is inserted and the wide portion of the T-shape is inserted, the frame body 1 is slightly slid in the longitudinal direction (right direction in FIG. 2), and the narrow portions of the T-shape are After being engaged, the attachment pieces 1f and 1g and the T-shaped holes 13b and 13b are fitted to each other by bending downward the locking piece 1h provided at the other end of the plate-like portion 1a. The frame 1 and the variable resistor portion 8 are prevented from coming off vertically and horizontally and are integrally engaged.

上記した本発明の実施例によれば、枠体１の他端に、枠体１の長手方向に移動可能な可動部材４を設け、この可動部材４に従動プーリ５を回転可能に軸支する支柱１１を固定すると共に、この支柱１１の可動部材４への固定位置とは異なる位置に枠体１との取付部であるネジ溝部４ｅを形成し、この取付部で可動部材４を枠体１に取り付けるようにしており、支柱１１の可動部材４への固定位置とは異なる位置で、可動部材４を枠体１に取り付けているので、その取り付けが、従動プーリ５の回転に起因して緩むことを抑制できるものとなる。
したがって、初期状態でベルト６を張架するテンションを調整して可動部材４を枠体１に取り付けることによって、動作を繰り返した後においてもベルト６及びレバー１４ａの移動速度や操作感触等のバラツキを少なくできて、長期間にわたって高品位を保つことができるものとなっている。 According to the above-described embodiment of the present invention, the movable member 4 movable in the longitudinal direction of the frame body 1 is provided at the other end of the frame body 1, and the driven pulley 5 is rotatably supported by the movable member 4. While fixing the support | pillar 11, the screw groove part 4e which is an attachment part with the frame 1 is formed in the position different from the fixed position to the movable member 4 of this support | pillar 11, and the movable member 4 is attached to the frame 1 by this attachment part. Since the movable member 4 is attached to the frame body 1 at a position different from the position where the column 11 is fixed to the movable member 4, the attachment is loosened due to the rotation of the driven pulley 5. This can be suppressed.
Therefore, by adjusting the tension for tensioning the belt 6 in the initial state and attaching the movable member 4 to the frame 1, variations in the moving speed and operation feeling of the belt 6 and the lever 14 a even after the operation is repeated. It can be reduced and can maintain high quality over a long period of time.

図１０は、可動部材４に軸支される従動プーリと支柱との取り付け状態の他の実施例を示している。
図において、ベルト６が張架される従動プーリ２０は、合成樹脂等の絶縁材からなり、円柱状の外周部に凹状のベルト受部２０ａを有する点では上記実施例と同じであるが、本実施例では、従動プーリ２０は、支柱２１が挿通されて回転可能に支持される細径で筒状の軸部２０ｂと、この軸部２０ｂよりも大きな径を有し、ベルト６が外周部に張架される筒状のベルト張架部２０ｃとを備えている。 FIG. 10 shows another embodiment in which the driven pulley pivotally supported by the movable member 4 and the column are attached.
In the figure, a driven pulley 20 on which a belt 6 is stretched is made of an insulating material such as a synthetic resin, and is the same as the above embodiment in that it has a concave belt receiving portion 20a on a cylindrical outer peripheral portion. In the embodiment, the driven pulley 20 has a small-diameter cylindrical shaft portion 20b through which the support column 21 is inserted and rotatably supported, and a larger diameter than the shaft portion 20b. And a cylindrical belt stretch portion 20c to be stretched.

また、ベルト張架部２０ｃの内周部には、やや大径からなる中空部２０ｄが設けられており、この中空部２０ｄを設けることにより、ベルト張架部２０ｃの内周部と、支柱２１の太径の頭部２１ａとの間には、互いの当接を防止するための空間部が設けられている。   Further, a hollow portion 20d having a slightly larger diameter is provided in the inner peripheral portion of the belt stretch portion 20c. By providing the hollow portion 20d, the inner peripheral portion of the belt stretch portion 20c and the column 21 are provided. A space portion for preventing mutual contact is provided between the head portion 21a and the thick head portion 21a.

ベルト６が張架される従動プーリ２０は、支柱２１が挿通されて可動部材４にカシメ等により固定されている。そして、可変抵抗器部８の摺動子受１４が金属ケース１３の末端まで移動して停止したとき、ベルト６の移動も止まり、この際の衝撃が従動プーリ２０を介して支柱２１に伝わるものとなる。   The driven pulley 20 around which the belt 6 is stretched is fixed to the movable member 4 by caulking or the like through the support 21. When the slider receiver 14 of the variable resistor portion 8 moves to the end of the metal case 13 and stops, the movement of the belt 6 also stops, and the impact at this time is transmitted to the column 21 via the driven pulley 20. It becomes.

図９に示す上記実施例においては、この衝撃によって、支柱１１の固定部（カシメ部）が徐々に緩み、ガタを生じるおそれがあるが、本実施例においては、ベルト６が張架される部分における、従動プーリ２０のベルト張架部２０ｃの内周部と支柱２１との間に、大きな空間部となる中空部２０ｄを設け、ベルト６が停止したときに作用する、支柱２１と直交する方向の力が、支柱２１に及びにくいようにしたので、ベルト６が停止した際の衝撃が従動プーリ２０を介して支柱２１に伝わり、支柱２１の固定部（カシメ部）が緩むのを防止することができるものとなっている。   In the above embodiment shown in FIG. 9, there is a possibility that the fixing portion (crimping portion) of the column 11 is gradually loosened due to this impact, and there is a possibility that the rattle may occur, but in this embodiment, the portion where the belt 6 is stretched In which the hollow portion 20d, which is a large space portion, is provided between the inner peripheral portion of the belt stretch portion 20c of the driven pulley 20 and the support column 21 and acts when the belt 6 is stopped, and is perpendicular to the support column 21. Since the force is not easily applied to the support column 21, the impact when the belt 6 stops is transmitted to the support column 21 via the driven pulley 20, and the fixing portion (caulking portion) of the support column 21 is prevented from loosening. It is possible to do.

尚、上記実施例においては、可動部材４は枠体１の板状部１ａの下面側に配置して板状部１ａを介してネジ止めするようにしたが、可動部材４を板状部１ａの上面側に配置して板状部１ａの下面側からネジ止めするようにしても良い。
この場合に、ネジ止めの作業性を良好にするために、可動部材４の積層部４ａ側にネジを挿通可能な長孔や切り欠きからなる貫通部を設け、ネジ溝部を板状部１ａ側に設けるようにすれば上面側からのネジ止めが可能となる。そして、この形態の場合には、積層部４ａに設けた貫通部が、支柱１１の可動部材４への固定位置とは異なる位置に形成した取付部となる。また、可動部材４は金属板に限らず、合成樹脂等の材料で形成しても良い。さらに、可動部材４の積層部４ａ等にネジ溝部４ｅを形成する代わりに、別途、ナット等を用いてもよい。 In the above embodiment, the movable member 4 is arranged on the lower surface side of the plate-like portion 1a of the frame 1 and is screwed via the plate-like portion 1a. However, the movable member 4 is fixed to the plate-like portion 1a. It may be arranged on the upper surface side of the plate-like portion 1a and screwed from the lower surface side of the plate-like portion 1a.
In this case, in order to improve the workability of screwing, a penetrating part made of a long hole or a notch through which a screw can be inserted is provided on the laminated part 4a side of the movable member 4, and the screw groove part is provided on the plate-like part 1a side If it is provided, the screwing from the upper surface side becomes possible. And in the case of this form, the penetration part provided in the lamination | stacking part 4a turns into an attaching part formed in the position different from the fixed position to the movable member 4 of the support | pillar 11. The movable member 4 is not limited to a metal plate, and may be formed of a material such as synthetic resin. Furthermore, a nut or the like may be used separately instead of forming the screw groove 4e in the laminated portion 4a of the movable member 4 or the like.

本発明のモータ駆動式スライド型可変抵抗器を示す斜視図である。It is a perspective view which shows the motor drive type slide-type variable resistor of this invention. 本発明のモータ駆動式スライド型可変抵抗器を示す分解斜視図である。It is a disassembled perspective view which shows the motor drive type slide-type variable resistor of this invention. 本発明のモータ駆動式スライド型可変抵抗器のモータ側の拡大斜視図である。It is an expansion perspective view by the side of the motor of the motor drive type slide type variable resistor of the present invention. 本発明のモータ駆動式スライド型可変抵抗器のモータ側の拡大分解斜視図である。It is an expansion exploded perspective view by the side of the motor of the motor drive type slide type variable resistor of the present invention. 本発明のモータ駆動式スライド型可変抵抗器の従動プーリ側の拡大斜視図である。It is an expansion perspective view by the side of the driven pulley of the motor drive type slide type variable resistor of this invention. 本発明のモータ駆動式スライド型可変抵抗器の従動プーリ側の拡大分解斜視図である。It is an expansion disassembled perspective view by the side of the driven pulley of the motor drive type slide type variable resistor of this invention. 本発明のモータ駆動式スライド型可変抵抗器のモータ側に移動した状態の移動体と可変抵抗器部の説明図である。It is explanatory drawing of the moving body and the variable resistor part of the state which moved to the motor side of the motor drive type slide variable resistor of this invention. 本発明のモータ駆動式スライド型可変抵抗器の従動プーリ側に移動した状態の移動体と可変抵抗器部の説明図である。It is explanatory drawing of the moving body and variable resistor part of the state which moved to the driven pulley side of the motor drive type slide type variable resistor of this invention. 本発明のモータ駆動式スライド型可変抵抗器の可動部材と従動プーリと支柱との取り付け状態を示す説明図である。It is explanatory drawing which shows the attachment state of the movable member, driven pulley, and support | pillar of the motor drive type slide variable resistor of this invention. 本発明のモータ駆動式スライド型可変抵抗器の可動部材と従動プーリと支柱との取り付け状態の他の実施例を示す説明図である。It is explanatory drawing which shows the other Example of the attachment state of the movable member, driven pulley, and support | pillar of the motor drive type slide variable resistor of this invention. 従来のモータ駆動式スライド型可変抵抗器を示す斜視図である。It is a perspective view which shows the conventional motor-driven slide type variable resistor. 従来のモータ駆動式スライド型可変抵抗器の従動プーリ取付け部を示す断面図である。It is sectional drawing which shows the driven pulley attachment part of the conventional motor drive type slide type variable resistor. 従来の他の構成となる従動プーリ取付け部を示す斜視図である。It is a perspective view which shows the driven pulley attachment part used as the other conventional structure.

符号の説明Explanation of symbols

１：枠体
１ａ：板状部
１ｂ：側壁
１ｃ：架橋部
１ｄ：丸孔
１ｅ：長窓孔
１ｆ：取付片
１ｇ：取付片
１ｈ：係止片
１ｉ：丸穴
１ｊ：丸穴
１ｋ：長孔（貫通部）
１ｌ：長孔（貫通部）
１ｍ：スリット
２：モータ
２ａ：回転軸
３：駆動プーリ
３ａ：ギヤ部
４：可動部材
４ａ：積層部
４ｂ：連結部
４ｃ：ガイド部
４ｄ：嵌合孔
４ｅ：ネジ溝部（取付部）
５：従動プーリ
５ａ：ベルト受部
６：ベルト
６ａ：歯部
７：移動体
７ａ：係合部
７ｂ：レバー支持部
８：可変抵抗器部
９：ネジ
１０：スペーサ
１１：支柱
１２：ネジ
１３：金属ケース
１３ａ：金属シャフト
１４：摺動子受
１４ａ：レバー
１５：摺動子
１６：ストッパ
２０：従動プーリ
２０ａ：ベルト受部
２０ｂ：軸部
２０ｃ：ベルト張架部
２０ｄ：中空部
２１：支柱
２１ａ：頭部 1: Frame 1a: Plate-like part 1b: Side wall 1c: Bridge part 1d: Round hole 1e: Long window hole 1f: Mounting piece 1g: Mounting piece 1h: Locking piece 1i: Round hole 1j: Round hole 1k: Long hole (Penetrating part)
1l: long hole (through part)
1m: Slit 2: Motor 2a: Rotating shaft 3: Drive pulley 3a: Gear part 4: Movable member 4a: Laminated part 4b: Connection part 4c: Guide part 4d: Fitting hole 4e: Screw groove part (attachment part)
5: driven pulley 5a: belt receiving part 6: belt 6a: tooth part 7: moving body 7a: engaging part 7b: lever support part 8: variable resistor part 9: screw 10: spacer 11: support 12: screw 13: Metal Case 13a: Metal Shaft 14: Slider Receiver 14a: Lever 15: Slider 16: Stopper 20: Driven Pulley 20a: Belt Receiver 20b: Shaft 20c: Belt Stretcher 20d: Hollow 21: Strut 21a :head

Claims (6)

一端にモータが取り付けられた板状部を有する枠体と、前記モータの回転軸に結合されたギヤ部を有する駆動プーリと、前記枠体の他端に回転可能に配設された従動プーリと、前記駆動プーリと従動プーリとの間に張架され、前記ギヤ部と噛み合う歯部を有する環状のベルトと、このベルトに結合された移動体が前記モータの回転に伴って前記枠体の長手方向に移動することにより抵抗値が調整されるように前記枠体に取り付けられた可変抵抗器部とを備え、前記枠体の他端には、該枠体の長手方向に移動可能な可動部材を設け、この可動部材に前記従動プーリを回転可能に軸支する支柱を固定すると共に、前記支柱の前記可動部材への固定位置とは異なる位置に取付部を形成し、この取付部で前記可動部材を前記枠体に取り付けたことを特徴とするモータ駆動式スライド型可変抵抗器。   A frame having a plate-like portion with a motor attached to one end thereof, a drive pulley having a gear portion coupled to a rotating shaft of the motor, and a driven pulley rotatably disposed at the other end of the frame; An annular belt that is stretched between the drive pulley and the driven pulley and has a tooth portion that meshes with the gear portion, and a moving body coupled to the belt is moved in the longitudinal direction of the frame body as the motor rotates. A variable resistor portion attached to the frame so that the resistance value is adjusted by moving in the direction, and a movable member movable in the longitudinal direction of the frame at the other end of the frame And fixing a support column rotatably supporting the driven pulley to the movable member, and forming a mounting portion at a position different from a position where the support column is fixed to the movable member. The member is attached to the frame. Motor-driven sliding variable resistor to. 前記枠体は、前記板状部と略直交して前記移動体の移動方向に延びる側壁を有すると共に、前記可動部材には、前記枠体の板状部に重ねられる板状の積層部と前記枠体の側壁により案内されるガイド部を設けたことを特徴とする請求項１記載のモータ駆動式スライド型可変抵抗器。   The frame has a side wall extending substantially perpendicular to the plate-like portion and extending in the moving direction of the movable body, and the movable member includes a plate-like stacked portion that is stacked on the plate-like portion of the frame and the movable member. The motor driven slide type variable resistor according to claim 1, further comprising a guide portion guided by a side wall of the frame. 前記ガイド部は、前記積層部と略直交する板状に形成されると共に、前記枠体には、前記ガイド部を挿通可能なスリットが設けられ、このスリットにより前記ガイド部を案内して前記枠体の長手方向に移動可能としたことを特徴とする請求項２記載のモータ駆動式スライド型可変抵抗器。   The guide portion is formed in a plate shape substantially orthogonal to the stacked portion, and the frame body is provided with a slit through which the guide portion can be inserted, and the guide portion is guided by the slit to the frame. The motor-driven slide type variable resistor according to claim 2, characterized in that it is movable in the longitudinal direction of the body. 前記可動部材の前記積層部にネジにより固定される前記取付部を設けると共に、前記枠体の板状部には前記ネジを挿通可能な貫通部を設け、前記積層部を前記ネジにより前記貫通部を介して前記板状部に固定したことを特徴とする請求項２、又は３記載のモータ駆動式スライド型可変抵抗器。   The mounting portion fixed to the laminated portion of the movable member by a screw is provided, and a penetrating portion through which the screw can be inserted is provided in the plate-like portion of the frame body, and the laminated portion is connected to the through portion by the screw. The motor-driven slide type variable resistor according to claim 2 or 3, wherein the motor-driven slide type variable resistor is fixed to the plate-like portion via a pin. 前記可動部材は金属板からなり、この金属板を折り曲げ加工することにより前記積層部と前記ガイド部を形成し、前記可動部材の積層部には、前記ネジを取り付けるためのネジ溝部を設け、前記枠体の板状部を挟んで前記ネジを前記ネジ溝部に締め付けたときに、前記ガイド部が前記枠体の側壁側に押し付けられるように、前記ガイド部を前記側壁と前記ネジ溝部との間に位置させたことを特徴とする請求項４記載のモータ駆動式スライド型可変抵抗器。   The movable member is made of a metal plate, and the laminated portion and the guide portion are formed by bending the metal plate, and the laminated portion of the movable member is provided with a screw groove portion for attaching the screw, The guide portion is placed between the side wall and the screw groove portion so that the guide portion is pressed against the side wall side of the frame body when the screw is fastened to the screw groove portion across the plate-like portion of the frame body. The motor-driven slide type variable resistor according to claim 4, wherein 前記支柱により前記可動部材に軸支される前記従動プーリは、前記支柱が挿通されて回転可能に支持される筒状の軸部と、この軸部よりも大きな径を有し、前記ベルトが外周部に張架される筒状のベルト張架部とを備え、このベルト張架部の内周部と前記支柱との間に互いの当接を防止する空間部を設けたことを特徴とする請求項１乃至５の何れかに記載のモータ駆動式スライド型可変抵抗器。   The driven pulley that is pivotally supported by the movable member by the support column has a cylindrical shaft portion that is rotatably supported through the support column, and has a larger diameter than the shaft portion. And a cylindrical belt stretcher stretched around the belt, and a space for preventing mutual contact is provided between the inner periphery of the belt stretcher and the support column. The motor-driven slide type variable resistor according to any one of claims 1 to 5.

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