JPH0582494U - Steering device for automobile toys - Google Patents

Abstract

(57)【要約】 【目的】 操向用小形電動機の駆動力を、クラッチ１
４、歯車減速機構、および戻しばねを有する操向機構を
介して操向輪に伝達する自動車玩具の操向装置であっ
て、１種類のクラッチ１４を前記電動機の出力などが異
なる複数機種の操向装置に容易に使用可能にする。 【構成】 前記電動機が大出力の機種には、クラッチ１
４の保持円板１６に２つの扇形凹部１６ａを仕切壁１６
ｂを介して形成し、クラッチ片１７に設けた係合部１７
ｂを扇形凹部１６ａに係合させ、電動機が小出力の機種
には、係合部１７ｂに設けた切欠部１７ｃを仕切壁１６
ｂに係合させ、電動機の正、逆転駆動によって保持円板
１６を回動させ、遠心力によってクラッチ片１７を外筒
１８に圧接させ、クラッチ１４を入れて操向し、電動機
への通電を断ち、クラッチ１４を切り、戻しばねによっ
て操向輪を中立にする。 (57) [Abstract] [Purpose] The driving force of a small steering motor is
4. A steering device for an automobile toy that transmits to a steered wheel via a steering mechanism having a gear reduction mechanism and a return spring, wherein one type of clutch 14 is used for steering a plurality of models having different electric motor outputs. It can be easily used for a bidirectional device. [Structure] The model with a high output of the electric motor has a clutch 1
The four holding discs 16 are provided with two fan-shaped recesses 16a for partitioning the partition wall 16
The engaging portion 17 formed on the clutch piece 17 through the b
b is engaged with the fan-shaped concave portion 16a, and the cutout portion 17c provided in the engaging portion 17b is provided in the partition wall 16 for a model in which the electric motor has a small output.
b, the holding disc 16 is rotated by the forward and reverse driving of the electric motor, the clutch piece 17 is brought into pressure contact with the outer cylinder 18 by centrifugal force, the clutch 14 is put in the steering, and the electric power is supplied to the electric motor. Disengage, disengage clutch 14, and neutralize steering wheel by return spring.

Description

【考案の詳細な説明】[Detailed description of the device]

【０００１】[0001]

【産業上の利用分野】[Industrial applications]

この考案は、ラジオコントロール（以下ラジコンと略記する）式などによる遠 隔操作式の自動車玩具のクラッチを改良した操向装置に関するものである。 The present invention relates to a steering device in which a clutch of a remote control type automobile toy such as a radio control (hereinafter abbreviated as radio controlled) type is improved.

【０００２】[0002]

【従来の技術】[Prior Art]

従来、前記のような自動車玩具の操向装置として、実願昭６３−５５２６９号 公報に示すものがあった。この操向装置は、シャーシの前端部に方向転換可能に 左，右操向輪を支持し、これらの操向輪に連結した左，右タイロッドを前記シャ ーシに左右方向に回動可能に軸支した操作部材に連結した操作機構を有し、前記 操向部材とシャーシに搭載された操向用小形電動機とをクラッチおよび歯車減速 機構を介して連結し、前記操向部材を戻しばねによって中立位置に付勢するよう にしている。 Conventionally, as a steering device for the above-mentioned automobile toy, there is one shown in Japanese Utility Model Application No. 63-55269. This steering device supports the left and right steering wheels so that it can change direction at the front end of the chassis, and the left and right tie rods connected to these steering wheels can rotate in the left and right directions on the chassis. The steering member has an operating mechanism connected to the operating member, and the steering member and a small steering electric motor mounted on the chassis are connected via a clutch and a gear reduction mechanism, and the steering member is returned by a return spring. I try to urge it to the neutral position.

【０００３】 また、前記クラッチは、前記小形電動機の回転軸に保持円板を固定し、この保 持円板の外周に複数の円弧状クラッチ片を凹凸係合させると共に、前記クラッチ 片が内周面に圧接する外筒を前記歯車減速機構の駆動側歯車に固定している。In the clutch, a holding disc is fixed to a rotary shaft of the small electric motor, and a plurality of arcuate clutch pieces are engaged with the outer circumference of the holding disc in a concavo-convex manner. An outer cylinder that is in pressure contact with the surface is fixed to the drive-side gear of the gear reduction mechanism.

【０００４】 そして、前述した構成の操向装置は、手持式などの送信器の操作によって、自 動車玩具に内蔵された受信器に指令を与えることで、自動車玩具に搭載された乾 電池を電源として駆動用小形電動機を駆動することにより、自動車玩具を前進， 後退走行させると共に、操向用小形電動機を正，逆転駆動させることで、クラッ チおよび歯車減速機構を介して操向機構の操向部材に駆動力を伝達し、操向部材 を戻しばねに抗して回動させることにより、タイロッドなどを介し操向輪を回動 させ、左，右方向に方向転換させる。また、送信器を中立状態にすることで、操 向用小形電動機への通電を遮断し、クラッチを切った状態で操向部材を戻しばね 力により中立位置に戻して操向輪を直進状態にするものである。The steering apparatus having the above-described configuration supplies a command to a receiver incorporated in a vehicle toy by operating a transmitter such as a hand-held type to supply power to a dry battery mounted on the vehicle toy. As a result, the small toy motor for driving is driven to move the toy forward and backward, and the small motor for steering is driven forward and backward to drive the steering mechanism through the clutch and gear reduction mechanism. By transmitting the driving force to the member and rotating the steering member against the return spring, the steering wheel is rotated via a tie rod and the direction is changed to the left or right. Also, by setting the transmitter to the neutral state, the power to the small steering motor is cut off, and the steering member is returned to the neutral position by the return spring force while the clutch is disengaged, and the steering wheel goes straight. To do.

【０００５】 さらに、操作用小形電動機の駆動時には、その回転軸の回転による遠心力で、 クラッチ片が保持円板の外周側に移動し外筒内周面に圧接し、クラッチが入るが 、操作用小形電動機への通電遮断によって、クラッチ片の外筒内周面への圧接が 解除され、クラッチが切れ、戻しばねのばね力によって操向輪が中立位置に戻る ものである。Further, when the small electric motor for operation is driven, the clutch piece is moved to the outer peripheral side of the holding disc by the centrifugal force due to the rotation of the rotating shaft thereof, and is pressed against the inner peripheral surface of the outer cylinder to engage the clutch. By shutting off the power to the small electric motor, the pressure contact of the clutch piece to the inner surface of the outer cylinder is released, the clutch is disengaged, and the steering wheel returns to the neutral position by the spring force of the return spring.

【０００６】[0006]

【考案が解決しようとする課題】[Problems to be solved by the device]

しかし、前述した自動車玩具の操向装置では、例えば操向輪の大，小などによ って、戻しばねのばね力および操向用小形電動機の出力が変わると、クラッチも 異なった寸法のものにする必要があり、複数の機種に応じて、クラッチもそれぞ れ変更させる必要があり、その生産性がよくないという問題点があった。 However, in the steering device for automobile toys described above, when the spring force of the return spring and the output of the small steering electric motor change due to, for example, the size of the steering wheel, the clutch also has different dimensions. However, there is a problem that the productivity is not good because it is necessary to change the clutch for each model depending on multiple models.

【０００７】 また、クラッチの入，切を多数回繰り返すと、クラッチ片の外周部と外筒内周 面との摩擦による発熱によって、外筒内が高温となり、外筒，クラッチ片を高温 に耐える材質にしなければならないという問題点があった。Further, when the clutch is repeatedly turned on and off a number of times, heat is generated due to friction between the outer peripheral portion of the clutch piece and the inner peripheral surface of the outer cylinder, so that the inside of the outer cylinder becomes hot and the outer cylinder and the clutch piece endure high temperature. There was a problem that it had to be made of material.

【０００８】 この考案は、前述した問題点を解決して、１種類のクラッチを、戻しばねのば ね力および操向用小形電動機の出力が異なる複数機種の操向装置にそれぞれ対応 させて容易に使用でき、また外筒内を比較的に低温に保つことができる、自動車 玩具の操向装置を提供することを目的とするものである。The present invention solves the above-mentioned problems and facilitates one type of clutch to correspond to a plurality of types of steering devices in which the spring force of the return spring and the output of the small steering motor are different. It is an object of the present invention to provide a steering device for an automobile toy, which can be used for an automobile and can keep a relatively low temperature inside the outer cylinder.

【０００９】[0009]

【課題を解決するための手段】[Means for Solving the Problems]

この考案の請求項１による自動車玩具の操向装置は、遠隔操作によって正，逆 転駆動される操向用小形電動機と、操向輪を中立位置に付勢する戻しばねを有す る操向機構と、前記電動機の駆動力を歯車減速機構を介し前記戻しばねに抗して 前記操向機構に伝達するクラッチとを備え、このクラッチは、前記電動機の回転 軸に固定した保持円板と、この保持円板に遠心力による半径方向移動可能に係合 する複数のクラッチ片と、前記保持板およびクラッチ片を同心状に収容し前記歯 車減速機構の駆動側歯車に固定した外筒とを有し、前記保持円板に複数の係合凹 部を仕切壁を介し等配して円周方向に形成し、前記クラッチ片に、前記外筒の内 周面に圧接する外周部の内周側に前記係合凹部に係合可能な係合片を形成すると 共に、前記仕切壁に係合可能な切欠部を前記係合片に形成し、クラッチ片を前記 係合凹部と仕切壁との一方に半径方向に摺動可能に係合させたものである。 A steering device for an automobile toy according to claim 1 of the present invention comprises a small steering electric motor that is normally or reversely driven by remote control, and a steering device that has a return spring that biases the steering wheel to a neutral position. A mechanism and a clutch for transmitting the driving force of the electric motor to the steering mechanism against the return spring via a gear reduction mechanism, and the clutch includes a holding disc fixed to a rotating shaft of the electric motor, A plurality of clutch pieces that engage with the holding disk so as to be movable in the radial direction by centrifugal force, and an outer cylinder that concentrically accommodates the holding plate and the clutch pieces and is fixed to the drive side gear of the gear reduction mechanism are provided. A plurality of engaging concave portions are equally arranged on the holding disc through a partition wall to form a circumferential direction, and the clutch piece has an inner circumference of an outer peripheral portion that is in pressure contact with the inner peripheral surface of the outer cylinder. The engaging piece that can be engaged with the engaging recess is formed on the side, and the partition The engageable notch formed in the engaging piece is a clutch piece that slidably engage in the radial direction to one of said engaging recess and the partition wall.

【００１０】 また、この考案の請求項２は、請求項１に記載の自動車玩具の操向装置におい て外筒は、駆動側歯車と一体に端壁を設け、この端壁に外筒の胴部内外を連通さ せる放熱用孔を形成したものである。According to a second aspect of the present invention, in the steering device for a toy vehicle according to the first aspect, the outer cylinder is provided with an end wall integrally with the drive-side gear, and the body of the outer cylinder is provided on the end wall. A heat dissipation hole is formed to connect the inside and outside of the unit.

【００１１】[0011]

【作用】[Action]

この考案の請求項１による自動車玩具の操向装置は、戻しばねのばね力および 操向用小形電動機の出力が大きい場合には、保持円板の扇形凹部にクラッチ片の 係合部を係合させることにより、保持円板とクラッチ片との接触面積が大きく、 クラッチが入った状態では保持円板からクラッチ片を介して外筒に大きな力を確 実に伝達できる（図６参照）。 According to the steering device for an automobile toy according to claim 1 of the present invention, when the spring force of the return spring and the output of the small steering motor are large, the engaging portion of the clutch piece is engaged with the fan-shaped recess of the holding disk. By doing so, the contact area between the holding disc and the clutch piece is large, and when the clutch is engaged, a large force can be reliably transmitted from the holding disc to the outer cylinder via the clutch piece (see FIG. 6).

【００１２】 逆に、戻しばねのばね力および操向用小形電動機の出力が小さい場合には、保 持円板の仕切壁にクラッチ片の係合部に設けた切欠を係合させることにより、保 持円板とクラッチ片との接触面積が小さいので、出力が小さい電動機でもクラッ チ片を戻しばねのばね力に抗して移動させることができ、電動機の消費電力が少 なくてすむ（図７参照）。On the contrary, when the spring force of the return spring and the output of the small steering motor are small, the partition wall of the holding disc is engaged with the notch provided in the engaging portion of the clutch piece, Since the contact area between the holding disc and the clutch piece is small, the clutch piece can be moved against the spring force of the return spring even with a motor with a small output, and the power consumption of the motor is small (Fig. 7).

【００１３】 したがって、１種類の一方向クラッチを、保持円板に対しクラッチ片が係合す る部位を変更するだけで、戻しばね，操向用小形電動機のばね力，出力の大小な どに応じて容易に使い分けることができ、クラッチの生産性が向上する。Therefore, one kind of one-way clutch can be used to change the return spring, the spring force of the small steering electric motor, the output power, and the like by simply changing the part where the clutch piece engages with the holding disc. Depending on the situation, the clutch can be easily used and the productivity of the clutch is improved.

【００１４】 この考案の請求項２による自動車玩具の操向装置は、クラッチ片の外周部と外 筒内周面との摩擦による発熱が、外筒の端壁に形成した放熱用孔から外筒外に放 出させるので、クラッチの入，切を繰り返しても外筒内が高温にならないので、 外筒，クラッチを耐熱性の低い安価な合成樹脂で製造でき、しかも、前記放熱用 孔によって外筒を軽量にでき、小さい力で外筒を回動させることができる。In the steering device for an automobile toy according to claim 2 of the present invention, the heat generated by the friction between the outer peripheral portion of the clutch piece and the inner peripheral surface of the outer cylinder is transferred from the heat dissipation hole formed in the end wall of the outer cylinder to the outer cylinder. Since it is discharged to the outside, the temperature inside the outer cylinder does not rise even if the clutch is repeatedly turned on and off. Therefore, the outer cylinder and the clutch can be manufactured with an inexpensive synthetic resin with low heat resistance. The cylinder can be made lightweight and the outer cylinder can be rotated with a small force.

【００１５】[0015]

【実施例】【Example】

以下、この考案の一実施例につき図１ないし図７を参照して説明する。 図１，図２，図３において、１はラジコン式の自動車玩具のシャーシであり、 シャーシ１の前端部には懸架部材２が懸架され、懸架部材２に縦軸回りに回動可 能に左，右ブラケット３が枢着され、ブラケット３に前輪である左，右操向輪４ が水平な車軸回りに回動自在に取り付けられている。なお、図示省略したが、シ ャーシ１の後部には、正，逆転駆動される駆動用小形電動機およびこの電動機で 駆動される後輪すなわち駆動輪が設けられ、シャーシ１には駆動用電動機を駆動 するための電源である乾電池、および受信器が搭載されている。 An embodiment of the present invention will be described below with reference to FIGS. In FIGS. 1, 2 and 3, reference numeral 1 is a chassis of a radio-controlled automobile toy. A suspension member 2 is suspended at the front end of the chassis 1, and the suspension member 2 is rotatable left about a vertical axis. The right bracket 3 is pivotally mounted, and the left and right steering wheels 4, which are front wheels, are attached to the bracket 3 so as to be rotatable around a horizontal axle. Although not shown in the drawings, a small drive motor for forward and reverse rotation and rear wheels or drive wheels driven by the electric motor are provided at the rear of the chassis 1, and the chassis 1 drives the drive motor. It is equipped with a dry battery, which is a power source, and a receiver.

【００１６】 前記ブラケット３には、左，右タイロッド５の外端部がそれぞれ連結され、タ イロッド５の内端部がそれぞれ操向部材６に連結されている。操向部材６は、前 端部がシャーシ１の前端部左右方向中央に固定された縦軸７に回動自在に軸支さ れ、後端部下面に左，右リブを有する戻し突起６ａが形成されている。 操向部材６下方に左，右ばね支持杆８が配置され、ばね支持杆８の前端部にコ イル状の戻しばね９が張られ、ばね支持杆８の中間部内側面が前記戻し突起６ａ のリブにそれぞれ当接され、ばね支持杆８の後端部がシャーシ１に短縦軸１０に よって回動自在に軸支されている。シャーシ１にストッパ１１が固定され、スト ッパ１１にばね支持杆８の内側面が、操作突起６ａ当接部と縦軸１０による軸支 部との間で支持されている。そして、前記ブラケット３，タイロッド５，操向部 材６，縦軸７，ばね支持杆８，戻しばね９，短縦軸１０およびストッパ１１によ って操向機構２４が構成されている。Outer ends of the left and right tie rods 5 are connected to the bracket 3, and inner ends of the tie rods 5 are connected to the steering member 6. A front end of the steering member 6 is rotatably supported by a vertical axis 7 fixed to the center of the front end of the chassis 1 in the left-right direction, and a return projection 6a having left and right ribs is formed on the lower surface of the rear end. Has been formed. Left and right spring support rods 8 are arranged below the steering member 6, a coil-shaped return spring 9 is stretched at the front end of the spring support rod 8, and the inner surface of the intermediate portion of the spring support rod 8 is provided with the return protrusion 6a. The spring support rod 8 is rotatably supported on the chassis 1 by a short vertical axis 10 in contact with the ribs. A stopper 11 is fixed to the chassis 1, and an inner side surface of the spring support rod 8 is supported by the stopper 11 between an abutting portion of the operation protrusion 6a and a shaft support portion of the vertical axis 10. A steering mechanism 24 is constituted by the bracket 3, the tie rod 5, the steering member 6, the vertical axis 7, the spring support rod 8, the return spring 9, the short vertical axis 10 and the stopper 11.

【００１７】 シャーシ１の前部上に電動機支持板１２が着脱可能に固定され、この支持板１ ２上に、図示省略した前記乾電池を電源として正，逆転駆動される操向用小形電 動機１３が支持固定され、この電動機１３からクラッチ１４が組み込まれた歯車 減速機構１５を介して前記操向部材６に駆動力が伝達されるように構成されてい る。An electric motor support plate 12 is detachably fixed to the front part of the chassis 1, and a small steering electric motor 13 is driven on the support plate 12 in the forward and reverse directions using the dry battery (not shown) as a power source. Is supported and fixed, and the driving force is transmitted from the electric motor 13 to the steering member 6 via the gear reduction mechanism 15 in which the clutch 14 is incorporated.

【００１８】 前記クラッチ１４は、図４，図５，図６にも示すように、操向用小形電動機１ ３の回転軸１３ａに保持円板１６が嵌合固定され、保持円板１６には２個のクラ ッチ片１７が着脱可能に係合され、さらに保持円板１６およびクラッチ片１７が 外筒１８によって覆われている。As shown in FIGS. 4, 5 and 6, the clutch 14 has a holding disc 16 fitted and fixed to the rotary shaft 13 a of the small steering motor 13 and fixed to the holding disc 16. Two clutch pieces 17 are detachably engaged with each other, and the holding disk 16 and the clutch piece 17 are covered with an outer cylinder 18.

【００１９】 すなわち、保持円板１６の軸方向中央部には、円周方向の２箇所にその外周面 に開口する同形状の扇形凹部１６ａが、仕切壁１６ｂを介し等間隔で相対向して 形成されている。前記クラッチ片１７には、円弧状の外周部１７ａの内側に前記 扇形凹部１６ａに係脱可能に係合する係合部１７ｂが一体に形成され、係合部１ ７ｂの周方向中央部には前記仕切壁１６ｂに係脱可能に係合する切欠部１７ｃが 形成されている。前記外筒１８の端壁１８ａには、これと同心に小径の駆動側歯 車１９が一体化され、外筒１８の内外を連通させる４個の放熱用孔１８ｂが形成 されている。なお、保持円板１６，クラッチ片１７および外筒１８はそれぞれ合 成樹脂の成形品で構成されている。That is, in the axially central portion of the holding disk 16, fan-shaped recesses 16a of the same shape that open to the outer peripheral surface at two locations in the circumferential direction face each other at equal intervals via the partition wall 16b. Has been formed. The clutch piece 17 is integrally formed with an engaging portion 17b that engages with the fan-shaped recess 16a in a disengageable manner inside an arc-shaped outer peripheral portion 17a. The engaging portion 17b has a central portion in the circumferential direction. A notch 17c is formed so as to be removably engaged with the partition wall 16b. The end wall 18a of the outer cylinder 18 is concentrically formed with a drive-side toothed wheel 19 having a small diameter, and four heat dissipation holes 18b for communicating the inside and the outside of the outer cylinder 18 are formed. The holding disc 16, the clutch piece 17, and the outer cylinder 18 are each made of a synthetic resin molded product.

【００２０】 そして、戻しばね９のばね力および操向用小形電動機１３の出力が大きい場合 などには、図４，図６に示すように、保持円板１６の扇形凹部１６ａにクラッチ 片１７の係合部１７ｂを半径方向に摺動可能に係合させ、戻しばね９のばね力お よび電動機１３の出力が小さい場合などには、図７に示すように、保持円板１６ の仕切壁１６ｂにクラッチ片１７の係合部１７ｂに形成した切欠部１７ｃを半径 方向に摺動可能に係合させることで、出力が異なる機種の電動機１３に同じ大き さの保持円板１６とクラッチ片１７との使用ができ、保持円板１６とクラッチ片 １７とを外筒１８で同心状に覆い、適宜の手段で外筒１８の軸方向移動を拘束し て回転軸１３ａに相対回動可能に嵌めることで、クラッチ１４を構成する。When the spring force of the return spring 9 and the output of the small steering electric motor 13 are large, as shown in FIGS. 4 and 6, the fan-shaped recess 16a of the holding disk 16 is provided with the clutch piece 17 of the clutch piece 17. When the engaging portion 17b is slidably engaged in the radial direction and the spring force of the return spring 9 and the output of the electric motor 13 are small, as shown in FIG. 7, the partition wall 16b of the holding disk 16 is separated. By engaging the notch 17c formed in the engaging portion 17b of the clutch piece 17 in a slidable manner in the radial direction, the holding disk 16 and the clutch piece 17 of the same size can be fitted to the electric motors 13 of different models. The holding disc 16 and the clutch piece 17 are concentrically covered by the outer cylinder 18, and the outer cylinder 18 is restrained from moving in the axial direction by an appropriate means so that the outer cylinder 18 can be relatively rotatably fitted to the rotary shaft 13a. Thus, the clutch 14 is configured.

【００２１】 さらに、小径の駆動側歯車１９は大径のクラウン歯車２０に噛み合わされ、こ の歯車２０の下面には一体にアイドル小歯車２１が設けられ、この小歯車２１は 前記支持板１２に固定した上縦軸２２に回動可能に軸支されている。アイドル小 歯車２１は扇形歯車２３に噛み合わされ、扇形歯車２３は前記操向部材６が嵌合 された縦軸７の上端部に回動可能に嵌合されて支持板１２上に支持されている。Further, the small-diameter drive-side gear 19 is meshed with the large-diameter crown gear 20, and an idle small gear 21 is integrally provided on the lower surface of the gear 20, and the small gear 21 is attached to the support plate 12. It is rotatably supported by the fixed upper vertical axis 22. The idle pinion 21 is meshed with a fan gear 23, and the fan gear 23 is rotatably fitted to the upper end of the vertical axis 7 to which the steering member 6 is fitted and is supported on the support plate 12. ..

【００２２】 前記扇形歯車２３から垂下された操作杆２３ａは、支持板１２に設けた孔１２ ａに遊嵌されて操作部材６の上面に開口する前後方向に長い係合孔６ｂに前後方 向に摺動可能に係合されている。なお、図示省略したが、支持板１２上には縦軸 ７，２２の上端部を回動可能に軸支し、モータ１３，クラッチ１４，歯車減速機 構１５を覆うカバーが着脱可能に固定され、また支持板１２には扇形歯車２３を 支持するリブが平面円弧状に形成されている。The operating rod 23 a hanging from the fan-shaped gear 23 is loosely fitted in a hole 12 a provided in the support plate 12 and extends forwardly and backwardly in an engaging hole 6 b which is long in the front-rear direction and opens on the upper surface of the operating member 6. Slidably engaged with. Although not shown, the upper ends of the vertical axes 7 and 22 are rotatably supported on the support plate 12, and a cover that covers the motor 13, the clutch 14, and the gear reduction mechanism 15 is detachably fixed. Further, ribs for supporting the sector gear 23 are formed on the support plate 12 in a plane arc shape.

【００２３】 次に、以上のように構成された自動車玩具の操向装置の動作について説明する 。 手持式などの送信器の操作によってシャーシに設けた受信器に走行指令を与え ることで、駆動用小形電動機を駆動させ、この電動機の正，逆転駆動により駆動 輪が駆動され、自動車玩具は前進，後退走行をする。Next, the operation of the steering device for a toy vehicle constructed as described above will be described. By giving a travel command to the receiver provided on the chassis by operating a transmitter such as a hand-held type, the small electric motor for driving is driven, and the drive wheels are driven by the forward and reverse driving of this electric motor, and the toy car moves forward. ， Go backwards.

【００２４】 この走行状態で、送信器に方向変換操作をしない時には、操向部材６が中立状 態を保ち、自動車玩具は直進する。走行状態で送信器に左または右方向変換操作 をして受信器に方向変換指令を与えると、操向用小形電動機１３が正または逆転 駆動され、その回転軸１３ａの回転に伴う遠心力で、クラッチ片１７が保持円板 １６の半径方向外側に付勢され、これらの外側面が外筒１８の内周面に圧接され ることでクラッチ片１７と外筒１８とが摩擦係合してクラッチ１４が入る。In this traveling state, when the transmitter is not operated to change the direction, the steering member 6 maintains the neutral state, and the toy car travels straight. When the transmitter is operated to change the direction to the left or right to give a direction change command to the receiver in a running state, the small steering motor 13 is driven in the forward or reverse direction, and the centrifugal force generated by the rotation of the rotary shaft 13a causes The clutch piece 17 is urged outward in the radial direction of the holding disc 16, and the outer surfaces of these are pressed against the inner peripheral surface of the outer cylinder 18, whereby the clutch piece 17 and the outer cylinder 18 are frictionally engaged with each other and the clutch is engaged. 14 goes in.

【００２５】 このため、電動機１３の駆動力が、回転軸１３ａ―保持円板１６―クラッチ片 １７―外筒１８―駆動側歯車１９―クラウン歯車２０―アイドル歯車２１―扇形 歯車２３の順に伝達され、扇形歯車２３の操作杆２３ａにより操向部材６が縦軸 ７を中心として、図３の鎖線に示すように、戻しばね９のばね力に抗して回動す る。操向部材６の回動によって、タイロッド５およびブラケット３を介して操作 輪４が左または右方向に回動し、自動車玩具が方向転換する。Therefore, the driving force of the electric motor 13 is transmitted in the order of the rotary shaft 13a, the holding disk 16, the clutch piece 17, the outer cylinder 18, the drive gear 19, the crown gear 20, the idle gear 21, and the fan gear 23. By the operating rod 23a of the sector gear 23, the steering member 6 rotates about the vertical axis 7 against the spring force of the return spring 9 as shown by the chain line in FIG. By rotating the steering member 6, the operating wheel 4 rotates leftward or rightward via the tie rod 5 and the bracket 3, and the automobile toy changes direction.

【００２６】 送信器の方向変換操作を解除すると、受信器への指令が解消され、電動機１３ への通電が遮断される。このため、電動機１３の回転軸１３ａが慣性回転となり 減速することで、クラッチ片１７に作用する遠心力が小さくなり、これらの外筒 １８に対する圧接力も小さくなり、クラッチ１４が切れる。なお、電動機１３は 減速後間もなく停止する。また、戻しばね９のばね力で左，右ばね支持杆８の一 方が操向部材６を中立方向に押し付けて付勢しているため、操向部材６は中立位 置に戻り、タイロッド５およびブラケット３を介して操向輪４が直進状態に戻さ れる。When the direction changing operation of the transmitter is released, the command to the receiver is canceled and the power supply to the electric motor 13 is cut off. Therefore, the rotating shaft 13a of the electric motor 13 is inertially rotated and decelerated, so that the centrifugal force acting on the clutch piece 17 is reduced, the pressure contact force against these outer cylinders 18 is also reduced, and the clutch 14 is disengaged. The electric motor 13 stops shortly after deceleration. Further, the spring force of the return spring 9 causes one of the left and right spring support rods 8 to press and bias the steering member 6 in the neutral direction, so that the steering member 6 returns to the neutral position and the tie rod 5 is returned. The steering wheel 4 is returned to the straight traveling state via the bracket 3.

【００２７】 この際、操作部材６は、歯車減速機構１５の扇形歯車２３から出力歯車１９ま でを戻しばね９のばね力で回動させるが、クラッチ１４が切れているので、回転 軸１３ａおよび電動機１３のロータには回動力が伝達されない。したがって、比 較的小さいばね力の戻しばね９でも、操向輪４を直進状態に戻すことができる。 そして、クラッチ１４の入，切に際して、クラッチ片１７は、これらの係合部 １７ｂと保持円板１６の扇形凹部１６ａ，または係合部１７ｂに形成した切欠部 １７ｃと保持円板１６の仕切壁１６ｂとが係合して保持円板１６と摺動しつつ半 径方向に移動し、クラッチ片１７が保持円板１６から外れることがない。また、 クラッチ片１７と外筒１８との圧接面が円弧状であり、これらが同心円状に配置 してあることで、保持円板１６，クラッチ片１７，外筒１８がいずれも合成樹脂 であることと相まって、クラッチ１４の入，切時に騒音などが発生することもな い。At this time, the operation member 6 rotates from the fan gear 23 of the gear reduction mechanism 15 to the output gear 19 by the spring force of the return spring 9, but since the clutch 14 is disengaged, the rotating shaft 13a and Rotational force is not transmitted to the rotor of the electric motor 13. Therefore, the steering wheel 4 can be returned to the straight traveling state even with the return spring 9 having a comparatively small spring force. When the clutch 14 is engaged and disengaged, the clutch piece 17 has a fan-shaped recess 16a of the engaging disc 17b and the retaining disc 16 or a notch 17c formed in the engaging disc 17b and a partition wall of the retaining disc 16. 16b engages with each other and moves in the radial direction while sliding with the holding disc 16, so that the clutch piece 17 does not come off from the holding disc 16. Further, since the pressure contact surfaces of the clutch piece 17 and the outer cylinder 18 are arcuate, and these are arranged concentrically, all of the holding disc 16, the clutch piece 17, and the outer cylinder 18 are made of synthetic resin. In addition, no noise is generated when the clutch 14 is turned on and off.

【００２８】 そして、図６に示すように、クラッチ１４の保持円板１６の扇形凹部１６ａに クラッチ片１７の係合部１７ｂを係合させた場合には、保持円板１６とクラッチ 片１７との摺接面積が大きいので、クラッチ片１７が外筒１８に圧接した状態で は、保持円板１６からクラッチ片１７を介して外筒１８に大きな力を確実に伝達 でき、戻しばね９のばね力および操向用小形電動機１３の出力が大きい自動車玩 具でも操向動作が確実にできる。Then, as shown in FIG. 6, when the engaging portion 17 b of the clutch piece 17 is engaged with the fan-shaped recess 16 a of the holding disc 16 of the clutch 14, the holding disc 16 and the clutch piece 17 are Since the sliding contact area of the clutch is large, when the clutch piece 17 is in pressure contact with the outer cylinder 18, a large force can be reliably transmitted from the holding disc 16 to the outer cylinder 18 via the clutch piece 17 and the spring of the return spring 9 The steering operation can be surely performed even with an automobile toy having a large output of the force and the small steering motor 13.

【００２９】 また、図７に示すように、保持円板１６の仕切壁１６ｂにクラッチ片１７の係 合部１７ｂに設けた切欠部１７ｃを係合させた場合には、保持円板１６とクラッ チ片１７との接触面積が小さいので、出力が小さい電動機１３でも、クラッチ片 １７を戻しばね９のばね力に抗して移動させることができ、電動機１３の消費電 力が少なくてすむ。Further, as shown in FIG. 7, when the partition wall 16b of the holding disc 16 is engaged with the cutout portion 17c provided in the engaging portion 17b of the clutch piece 17, the holding disc 16 and the clutch are not joined. Since the contact area with the clutch piece 17 is small, even the electric motor 13 having a small output can move the clutch piece 17 against the spring force of the return spring 9, and the electric power consumption of the electric motor 13 can be small.

【００３０】 したがって、１種類のクラッチ１４を、保持円板１６に対しクラッチ片１７が 係合する部位変更するだけで、戻しばね９のばね力，電動機の出力の大小などに 応じて、２機種など複数機種の操向装置に容易に使い分けることができる。 さらに、クラッチ片１７の外周部１７ａと外筒１８内周面との摩擦による発熱 が、外筒１８の端壁１８ａに形成した放熱用孔１８ｂから外筒１８外に放熱され るので、クラッチ１４の入，切を短時分で多数回繰り返しても、外筒１８内が高 温にならない上に、放熱用孔１８ｂによって外筒１８を軽量にできる。Therefore, two types of clutches 14 can be used depending on the spring force of the return spring 9 and the magnitude of the output of the electric motor simply by changing the part where the clutch piece 17 engages with the holding disc 16. It can be easily used for multiple types of steering devices. Further, heat generated by friction between the outer peripheral portion 17a of the clutch piece 17 and the inner peripheral surface of the outer cylinder 18 is dissipated to the outside of the outer cylinder 18 through the heat dissipation holes 18b formed in the end wall 18a of the outer cylinder 18, so that the clutch 14 Even if the turning on and off are repeated many times in a short time, the inside of the outer cylinder 18 does not become high temperature, and the heat radiating hole 18b can reduce the weight of the outer cylinder 18.

【００３１】 なお、前記実施例では、クラッチ片を２個としたが、この考案は、クラッチ片 を３個以上にしてもよく、また操向機構も前記実施例のもに限られることなく適 宜変更できる。In the above embodiment, the number of the clutch pieces is two, but this invention may have three or more clutch pieces, and the steering mechanism is not limited to that of the above embodiment. You can change it.

【００３２】[0032]

【考案の効果】[Effect of the device]

以上説明したとおり、この考案の請求項１による自動車玩具の操向装置は、遠 隔操作によって正，逆転駆動される操向用小形電動機と、操向輪を中立位置に付 勢する戻しばねを有する操向機構と、前記電動機の駆動力を歯車減速機構を介し 前記戻しばねに抗して前記操向機構に伝達するクラッチとを備え、このクラッチ は、前記電動機の回転軸に固定した保持円板と、この保持円板に遠心力による半 径方向移動可能に係合する複数のクラッチ片と、前記保持板およびクラッチ片を 同心状に収容し前記歯車減速機構の駆動側歯車に固定した外筒とを有し、前記保 持円板に複数の係合凹部を仕切壁を介し等配して円周方向に形成し、前記クラッ チ片に、前記外筒の内周面に圧接する外周部の内周側に前記係合凹部に係合可能 な係合片を形成すると共に、前記仕切壁に係合可能な切欠部を前記係合片に形成 し、クラッチ片を前記係合凹部と仕切壁との一方に半径方向に摺動可能に係合さ せたので、次の効果が得られる。 As described above, the steering device for a toy vehicle according to claim 1 of the present invention comprises a small steering electric motor that is normally and reversely driven by a remote operation, and a return spring that biases the steering wheel to the neutral position. And a clutch for transmitting the driving force of the electric motor to the steering mechanism against the return spring via a gear reduction mechanism, and the clutch is a holding circle fixed to the rotating shaft of the electric motor. A plate, a plurality of clutch pieces that engage with the holding disk so as to be movable in the semi-radial direction by centrifugal force, and the holding plate and the clutch pieces that are concentrically housed and fixed to the drive-side gear of the gear reduction mechanism. A cylinder, and a plurality of engaging recesses are evenly arranged in the holding disc through a partition wall to form a circumferential direction, and the clutch piece has an outer circumference that is pressed against the inner circumferential surface of the outer cylinder. An engaging piece that can engage with the engaging recess is formed on the inner peripheral side of the section In addition, since the notch portion that can be engaged with the partition wall is formed in the engagement piece and the clutch piece is engaged with one of the engagement recess and the partition wall so as to be slidable in the radial direction, The following effects are obtained.

【００３３】 すなわち、この考案の請求項１による自動車玩具の操向装置は、戻しばねのば ね力および操向用小形電動機の出力が大きい場合には、保持円板の扇形凹部にク ラッチ片の係合部を係合させることにより、保持円板とクラッチ片との接触面積 が大きく、クラッチが入った状態では保持円板からクラッチ片を介して外筒に大 きな力を確実に伝達できる（図６参照）。That is, the steering device for an automobile toy according to claim 1 of the present invention is such that when the spring force of the return spring and the output of the small steering electric motor are large, the clasp piece is placed in the fan-shaped recess of the holding disk. The engagement area of the holding disc with the clutch piece is large by engaging the engaging part of the, and when the clutch is engaged, a large force is reliably transmitted from the holding disc to the outer cylinder through the clutch piece. Yes (see Figure 6).

【００３４】 逆に、戻しばねのばね力および操向用小形電動機の出力が小さい場合には、保 持円板の仕切壁にクラッチ片の係合部に設けた切欠を係合させることにより、保 持円板とクラッチ片との接触面積が小さいので、出力が小さい電動機でもクラッ チ片を戻しばねのばね力に抗して移動させることができ、電動機の消費電力が少 なくてすむ（図７参照）。On the contrary, when the spring force of the return spring and the output of the small steering motor are small, the partition wall of the holding disk is engaged with the notch provided in the engaging portion of the clutch piece, Since the contact area between the holding disc and the clutch piece is small, the clutch piece can be moved against the spring force of the return spring even with a motor with a small output, and the power consumption of the motor is small (Fig. 7).

【００３５】 したがって、１種類の一方向クラッチを、保持円板に対しクラッチ片が係合す る部位を変更するだけで、戻しばね、操向用小形電動機のばね力，出力の大小な どに応じて容易に使い分けることができ、クラッチの生産性が向上する。Therefore, one type of one-way clutch can be used to change the return spring, the spring force of the small steering electric motor, the output power, and the like by simply changing the portion where the clutch piece engages with the holding disc. Depending on the situation, the clutch can be easily used and the productivity of the clutch is improved.

【００３６】 また、この考案の請求項２による自動車玩具の操向装置は、外筒は、駆動側歯 車と一体に端壁を設け、この端壁に外筒の胴部内外を連通させる放熱用孔を形成 したので、次の効果が得られる。Further, in the steering device for a toy vehicle according to claim 2 of the present invention, the outer cylinder is provided with an end wall integrally with the drive-side toothed wheel, and the end wall communicates heat with the inside and outside of the body of the outer cylinder. Since the holes are formed, the following effects can be obtained.

【００３７】 すなわち、この考案の請求項２による自動車玩具の操向装置は、クラッチ片の 外周部と外筒内周面との摩擦による発熱が、外筒の端壁に形成した放熱用孔から 外筒外に放出させるので、クラッチの入，切を繰り返しても外筒内が高温になら ないので、外筒，クラッチを耐熱性の低い安価な合成樹脂で製造でき、しかも、 前記放熱用孔によって外筒を軽量にでき、小さい力で外筒を回動させることがで きる。That is, in the steering apparatus for an automobile toy according to claim 2 of the present invention, heat generated by friction between the outer peripheral portion of the clutch piece and the inner peripheral surface of the outer cylinder is discharged from the heat dissipation hole formed in the end wall of the outer cylinder. Since it is released to the outside of the outer cylinder, the temperature inside the outer cylinder does not rise even if the clutch is repeatedly turned on and off. Therefore, the outer cylinder and the clutch can be manufactured from an inexpensive synthetic resin with low heat resistance, and the heat dissipation hole This makes it possible to reduce the weight of the outer cylinder and rotate the outer cylinder with a small force.

【図面の簡単な説明】[Brief description of drawings]

【図１】この考案の一実施例による自動車玩具の操向装
置を示した横断側面図FIG. 1 is a cross-sectional side view showing a steering device for an automobile toy according to an embodiment of the present invention.

【図２】図１に示した操向装置の平面図FIG. 2 is a plan view of the steering apparatus shown in FIG.

【図３】図２のモータ支持板の前部を切り欠いた平面図FIG. 3 is a plan view in which the front portion of the motor support plate of FIG. 2 is cut away.

【図４】クラッチの拡大正面図FIG. 4 is an enlarged front view of the clutch.

【図５】クラッチの拡大分解斜視図FIG. 5 is an enlarged exploded perspective view of the clutch.

【図６】クラッチの保持円板とクラッチ片との一係合例
を示した横断正面図FIG. 6 is a cross-sectional front view showing an example of engagement between a clutch holding disc and a clutch piece.

【図７】保持円板とクラッチ片との他の係合例を示した
横断正面図FIG. 7 is a cross-sectional front view showing another example of engagement between the holding disc and the clutch piece.

【符号の説明】[Explanation of symbols]

１ シャーシ ２ 懸架部材 ３ ブラケット ４ 操向輪 ５ タイロッド ６ 操向部材 ８ ばね支持杆 ９ 戻しばね １２ 電動機支持板 １３ 操向用小形電動機 １３ａ 回転軸 １４ クラッチ １５ 歯車減速機構 １６ 保持円板 １６ａ 扇形凹部 １６ｂ 仕切壁 １７ クラッチ片 １７ａ 外周部 １７ｂ 係合部 １７ｃ 切欠部 １８ 外筒 １８ａ 端壁 １８ｂ 放熱用孔 １９ 駆動側歯車 ２０ クラウン歯車 ２１ アイドル小歯車 ２３ 扇形歯車 ２３ａ 操作杆 ２４ 操向機構 1 chassis 2 suspension member 3 bracket 4 steering wheel 5 tie rod 6 steering member 8 spring support rod 9 return spring 12 electric motor support plate 13 small steering electric motor 13a rotary shaft 14 clutch 15 gear reduction mechanism 16 holding disk 16a fan-shaped recess 16b Partition wall 17 Clutch piece 17a Outer peripheral portion 17b Engaging portion 17c Notch portion 18 Outer cylinder 18a End wall 18b Heat dissipation hole 19 Drive side gear 20 Crown gear 21 Idle small gear 23 Fan gear 23a Operating rod 24 Steering mechanism

Claims (2)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項１】 遠隔操作によって正，逆転駆動される操
向用小形電動機と、操向輪を中立位置に付勢する戻しば
ねを有する操向機構と、前記電動機の駆動力を歯車減速
機構を介し前記戻しばねに抗して前記操向機構に伝達す
るクラッチとを備え、このクラッチは、前記電動機の回
転軸に固定した保持円板と、この保持円板に遠心力によ
る半径方向移動可能に係合する複数のクラッチ片と、前
記保持板およびクラッチ片を同心状に収容し前記歯車減
速機構の駆動側歯車に固定した外筒とを有し、前記保持
円板に複数の係合凹部を仕切壁を介し等配して円周方向
に形成し、前記クラッチ片に、前記外筒の内周面に圧接
する外周部の内周側に前記係合凹部に係合可能な係合片
を形成すると共に、前記仕切壁に係合可能な切欠部を前
記係合片に形成し、クラッチ片を前記係合凹部と仕切壁
との一方に半径方向に摺動可能に係合させたことを特徴
とする自動車玩具の操向装置。1. A small steering electric motor driven forward and backward by remote control, a steering mechanism having a return spring for urging the steering wheel to a neutral position, and a gear reduction mechanism for driving the electric motor. A clutch that transmits the force to the steering mechanism against the return spring via a holding disc fixed to the rotating shaft of the electric motor and a radial movement of the holding disc by centrifugal force. A plurality of engaging clutch pieces, and an outer cylinder that concentrically accommodates the holding plate and the clutch pieces and is fixed to the drive side gear of the gear reduction mechanism, and has a plurality of engaging recesses in the holding disc. An engaging piece that can be engaged with the engaging concave portion is formed on the clutch piece on the inner peripheral side of the outer peripheral portion in pressure contact with the inner peripheral surface of the outer cylinder. While forming, forming a notch portion that can be engaged with the partition wall in the engagement piece, A steering device for a toy vehicle, wherein a clutch piece is engaged with one of the engagement recess and the partition wall so as to be slidable in a radial direction. 【請求項２】 外筒は、駆動側歯車と一体に端壁を設
け、この端壁に外筒の胴部内外を連通させる放熱用孔を
形成したことを特徴とする請求項１に記載の自動車玩具
の操向装置。2. The outer cylinder is provided with an end wall integrally with a drive side gear, and a heat radiating hole for communicating the inside and outside of the body of the outer cylinder is formed in this end wall. Steering device for automobile toys.