JP2006122150A - Toilet bowl apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a toilet bowl apparatus having a miniaturized driving device with a clutch mechanism while securing the accurate automatic opening/closing control of a toilet lid and a toilet seat. <P>SOLUTION: The clutch mechanism 7 is interposed between a transmission member connected to a motor 6 of the driving device 4 and a transmission member whose rotational frequency is measured by a rotational frequency detecting sensor 5. The clutch mechanism 7 consists of a first transmission member 8 with a hollow part 9 formed at the center and a second transmission member 11 disposed inside the hollow part 9 and pivotally supported to a shaft 10 installed in a case 4a of the driving device 4. A plurality of engagement recesses 12 are recessed either on the inner surface of the first transmission member 8 or on the outer surface of the second transmission member 11 in the peripheral direction, and engagement projections 13 spring-energized to one surface are formed on the other surface. The first transmission member 8 and the second transmission member 11 are integrated with each other by engaging the engagement projections 13 with the engagement recesses 12. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、便器装置に関し、詳しくは便蓋及び便座の開閉機構に関するものである。   The present invention relates to a toilet device, and more particularly, to an opening / closing mechanism for a toilet lid and a toilet seat.

従来から、便器装置には、便器本体のボウル部の後方上面に便蓋及び便座を取付ける支持体を設けると共に、この支持体に取り付けた便蓋及び便座を開閉駆動させる駆動装置を設けたことで、便蓋及び便座の開閉を自動的に行わせたものがある。ここで、便蓋や便座の自動回動にかかる制御は、一般的には、駆動装置に設けた回転数検知センサによって駆動装置内の任意の歯車等の伝達部材の回転数を検知することで、便蓋や便座の回動位置を判定させて便蓋や便座をその上限位置や下限位置で止めるようにしている。   Conventionally, a toilet device is provided with a support body for attaching a toilet lid and a toilet seat on the rear upper surface of the bowl portion of the toilet body, and a driving device for opening and closing the toilet lid and the toilet seat attached to the support body. In some cases, the toilet lid and toilet seat are automatically opened and closed. Here, the control related to the automatic rotation of the toilet lid and the toilet seat is generally performed by detecting the rotation speed of a transmission member such as an arbitrary gear in the drive apparatus by a rotation speed detection sensor provided in the drive apparatus. The toilet lid and the toilet seat are determined to be rotated, and the toilet lid and the toilet seat are stopped at the upper limit position and the lower limit position.

ところで、このような便蓋及び便座の開閉を自動的に行わせた便器装置にあって、たとえば開閉中の便蓋や便座を手で押さえたり、間違って便座に座っているときに便蓋を閉めるように動作させたりすると、駆動装置内の歯車等の伝達部材やモータに過負荷がかかって駆動装置が破損してしまう恐れがある。上記過負荷によって駆動装置が破損してしまうと、図１３のように、回転数検知センサで検知した駆動装置内の伝達部材の回転数と便蓋や便座の回動位置との相関性がとれなくなり、便蓋及び便座の正確な自動開閉制御が不可能になってしまうのである。なお、図１３は、便座が開き動作中に駆動装置が破損した場合であって、その後モータの回転を止め、便座が自重で閉じ位置にまで下降する動作を示すグラフである。   By the way, in the toilet apparatus in which the toilet lid and toilet seat are automatically opened and closed, for example, when the toilet lid and toilet seat being opened and closed are pressed by hand or when sitting on the toilet seat by mistake, If it is operated so as to be closed, the transmission device such as gears in the drive device and the motor may be overloaded and the drive device may be damaged. When the driving device is damaged by the overload, as shown in FIG. 13, the rotational speed of the transmission member in the driving device detected by the rotational speed detection sensor is correlated with the rotational position of the toilet lid or toilet seat. As a result, accurate automatic opening / closing control of the toilet lid and toilet seat becomes impossible. FIG. 13 is a graph showing an operation in which the drive device is broken while the toilet seat is opened, and then the motor is stopped and the toilet seat is lowered to its closed position by its own weight.

なお、上記便蓋１及び便座２の開閉を自動的に行わせた便器装置に、駆動装置４にかかる過負荷を逃がすためのクラッチ機構７を駆動装置４の機構内に設けたものは、たとえば特許文献１にあるように存在している。このクラッチ機構７は、詳しくは図１４のように、駆動装置４のケース４ａに架設した軸１０にモータ６側に連結した駆動側伝達部材４１と便座２（便蓋）側に連結した従動側伝達部材４２とを並べて回転自在に軸支し、駆動側伝達部材４１の中央にスラスト方向に突出した円錐突部４１ａを形成すると共に従動側伝達部材４２に上記円錐突部４１ａを挿入するための傾斜状内周面を備えた穴部４２ａを形成し、従動側伝達部材４２をコイルバネ４３にて駆動側伝達部材４１に付勢して円錐突部４１ａの外周面と穴部４２ａの内周面とを弾接させることで、円錐突部４１ａの外周面と穴部４２ａの内周面との間のすべり摩擦にて従動側伝達部材４２と駆動側伝達部材４１とが一体化するように構成されており、従動側伝達部材４２に一定以上の過負荷がかかると円錐突部４１ａの外周面が穴部４２ａの内周面に対して滑り、従動側伝達部材４２と駆動側伝達部材４１側との間で過負荷を逃がし、過負荷が駆動側伝達部材４１を介してモータ６にまで至らないようにされている。   In addition, in the toilet device in which the toilet lid 1 and the toilet seat 2 are automatically opened and closed, a clutch mechanism 7 for releasing an overload applied to the driving device 4 is provided in the mechanism of the driving device 4. It exists as in Patent Document 1. Specifically, as shown in FIG. 14, the clutch mechanism 7 includes a drive-side transmission member 41 connected to the motor 6 side and a driven side connected to the toilet seat 2 (toilet lid) side to the shaft 10 installed on the case 4a of the drive device 4. The transmission member 42 is aligned and rotatably supported, and a conical protrusion 41a protruding in the thrust direction is formed at the center of the driving-side transmission member 41, and the conical protrusion 41a is inserted into the driven-side transmission member 42. A hole 42a having an inclined inner peripheral surface is formed, and the driven-side transmission member 42 is urged to the driving-side transmission member 41 by a coil spring 43 so that the outer peripheral surface of the conical protrusion 41a and the inner peripheral surface of the hole 42a. The driven transmission member 42 and the driving transmission member 41 are integrated by sliding friction between the outer peripheral surface of the conical protrusion 41a and the inner peripheral surface of the hole 42a. The driven-side transmission member 42 is above a certain level. When an overload is applied, the outer peripheral surface of the conical protrusion 41a slides with respect to the inner peripheral surface of the hole 42a, and the overload is released between the driven side transmission member 42 and the drive side transmission member 41, and the overload is driven. It does not reach the motor 6 via the side transmission member 41.

ところで、便蓋１や便座２を取付ける支持体３としては近年広く普及している温水洗浄便座装置１９がこれを構成することが多いのであるが、近年では温水洗浄便座装置１９の多機能化が急激に進んでおり、それに伴って温水洗浄便座装置１９内により多くの各種機器を内装する必要に迫られており、つまり温水洗浄便座装置１９内に内装する上記駆動装置４にあっても省スペース化が求められているのである。そして、この観点から上記図１４のクラッチ機構７を考えると、従動側伝達部材４２と駆動側伝達部材４１とコイルバネ４３とが軸方向に並設されると共に、円錐突部４１ａの外周面と穴部４２ａの内周面との接離を可能にする軸方向への寸法も必要であることから、主に軸方向への寸法が大きく必要とされる構造となっており、すなわち駆動装置４の小型化という点では充分満足できるものではなく、そのまま採用できるものではなかった。
特開平２−２９７３１９号公報 By the way, as the support body 3 to which the toilet lid 1 and the toilet seat 2 are attached, the warm water washing toilet seat device 19 which has been widely spread in recent years often constitutes this. Along with this, it is necessary to install more various devices in the warm water washing toilet seat device 19, that is, space saving even in the drive device 4 installed in the warm water washing toilet seat device 19. There is a need to make it easier. From this point of view, considering the clutch mechanism 7 shown in FIG. 14, the driven-side transmission member 42, the drive-side transmission member 41, and the coil spring 43 are arranged side by side in the axial direction, and the outer peripheral surface and the hole of the conical protrusion 41a. Since the size in the axial direction that enables contact with and separation from the inner peripheral surface of the portion 42a is also required, the structure is mainly required to have a large size in the axial direction. In terms of downsizing, it was not fully satisfactory and could not be adopted as it was.
JP-A-2-297319

本発明は上記の従来の問題点に鑑みて発明したものであって、便蓋及び便座の正確な自動開閉制御を確保できるように駆動装置にクラッチ機構を設け、同時にクラッチ機構を設けた駆動装置の小型化をも図った便器装置を提供することを課題とするものである。   The present invention has been invented in view of the above-described conventional problems, and is provided with a clutch mechanism in a drive device so as to ensure accurate automatic opening / closing control of a toilet lid and toilet seat, and at the same time, a drive device provided with a clutch mechanism It is an object of the present invention to provide a toilet device that is also miniaturized.

上記課題を解決するために本発明の請求項１に係る便器装置は、便器本体のボウル部の後方上面に便蓋１及び便座２を取付ける支持体３を設けると共にこの支持体３に取り付けた便蓋１及び便座２を開閉駆動させる駆動装置４を設け、この駆動装置４内の任意の歯車等の伝達部材の回転数を検知する回転数検知センサ５を設け、この回転数検知センサ５の検知によって便蓋１及び便座２の位置を判定して便蓋１及び便座２の自動開閉を行わせた便器装置において、駆動装置４のモータ６に連結された伝達部材と回転数検知センサ５にて回転数が計測される伝達部材との間にクラッチ機構７を介装し、上記クラッチ機構７を、中央に中空部９を形成した第１伝達部材８と、上記中空部９内に配設されて駆動装置４のケース４ａに架設した軸１０に枢支された第２伝達部材１１とで構成し、第１伝達部材８の内周面または第２伝達部材１１の外周面のいずれか一方にその周方向に亙って複数の係合凹部１２を凹設し、他方に上記一方の周面に向けてバネ付勢させた係合凸部１３を設け、この係合凸部１３を係合凹部１２に嵌合したことで第１伝達部材８と第２伝達部材１１とを一体化したことを特徴とする。   In order to solve the above problems, a toilet device according to claim 1 of the present invention is provided with a support body 3 for attaching the toilet lid 1 and the toilet seat 2 to the upper rear surface of the bowl portion of the toilet body, and the stool attached to the support body 3. A drive device 4 that opens and closes the lid 1 and the toilet seat 2 is provided, and a rotation speed detection sensor 5 that detects the rotation speed of a transmission member such as an arbitrary gear in the drive device 4 is provided. In the toilet apparatus in which the positions of the toilet lid 1 and the toilet seat 2 are determined by the above and the toilet lid 1 and the toilet seat 2 are automatically opened and closed, the transmission member connected to the motor 6 of the driving device 4 and the rotational speed detection sensor 5 The clutch mechanism 7 is interposed between the transmission member whose rotational speed is measured, and the clutch mechanism 7 is disposed in the hollow portion 9 and the first transmission member 8 having a hollow portion 9 formed in the center. The shaft 10 installed on the case 4a of the drive device 4 The second transmission member 11 is pivotally supported, and a plurality of engagement recesses 12 are formed on the inner circumferential surface of the first transmission member 8 or the outer circumferential surface of the second transmission member 11 in the circumferential direction. And the other is provided with an engaging convex portion 13 which is spring-biased toward the one peripheral surface, and the engaging convex portion 13 is fitted into the engaging concave portion 12 so that the first transmission member 8 is provided. And the second transmission member 11 are integrated.

これによると、自動回動中の便蓋１及び便座２への外力などに起因する駆動装置４への過負荷を逃がすために駆動装置４内にクラッチ機構７を設けるにあたり、このクラッチ機構７を駆動装置４のモータ６に連結された伝達部材と回転数検知センサ５にて回転数が計測される伝達部材との間に介装したことで、クラッチ機構７が機能してモータ６と便蓋１及び便座２との機構的連結が断たれても、回転数検知センサ５にて回転数が計測される伝達部材の便蓋１及び便座２との機構的連結を維持させることができ、引き続き回転数検知センサ５が検出する回転数に基いた適宜の便蓋１及び便座２の回動制御を行うことができるのであり、また、駆動装置４内に設けるクラッチ機構７の構造を、第１伝達部材８の中空部９内に第２伝達部材１１を配設すると共に、係合凸部１３と係合凹部１２との軸径方向の弾接・嵌合にて第１伝達部材８と第２伝達部材１１とを一体化させる構造としたことで、軸方向への必要寸法を極力小さくでき、クラッチ機構７、ひいては駆動装置４の小型化を図ることができるものである。なお、軸径方向にバネ付勢される係合凸部１３を軸対称位置に複数設けると、係合凸部１３と係合凹部１２との弾接・嵌合に起因した軸１０にかかる力は相殺されるようになって軸１０への荷重バランスを良好にでき、クラッチ機構７の寿命信頼性能を向上できる。   According to this, when the clutch mechanism 7 is provided in the drive device 4 in order to release the overload on the drive device 4 due to the external force applied to the toilet lid 1 and the toilet seat 2 during the automatic rotation, By interposing between the transmission member connected to the motor 6 of the driving device 4 and the transmission member whose rotational speed is measured by the rotational speed detection sensor 5, the clutch mechanism 7 functions and the motor 6 and the toilet lid 1 and the toilet seat 2 can be maintained mechanically connected to the toilet lid 1 and the toilet seat 2 of the transmission member whose rotation speed is measured by the rotation speed detection sensor 5 even if the mechanical connection to the toilet seat 2 is broken. The appropriate rotation control of the toilet lid 1 and the toilet seat 2 can be performed based on the rotation speed detected by the rotation speed detection sensor 5, and the structure of the clutch mechanism 7 provided in the drive device 4 is the first. The second transmission member 11 is placed in the hollow portion 9 of the transmission member 8. And a structure in which the first transmission member 8 and the second transmission member 11 are integrated by elastic contact and fitting in the axial radial direction between the engagement convex portion 13 and the engagement concave portion 12. The required dimension in the direction can be reduced as much as possible, and the clutch mechanism 7 and thus the drive device 4 can be reduced in size. If a plurality of engaging projections 13 that are spring-biased in the axial radial direction are provided at axially symmetrical positions, the force applied to the shaft 10 due to the elastic contact / fitting between the engaging projections 13 and the engaging recesses 12. Is canceled out, the load balance to the shaft 10 can be improved, and the life reliability performance of the clutch mechanism 7 can be improved.

また、請求項２に係る便器装置は、請求項１において、上記係合凸部１３を、伝達部材の周面に開口して径方向に凹没させた有底状の収納部１４を形成し、この収納部１４の奥方にコイルバネ１５を配設すると共に収納部１４の開口に臨ませるように上記コイルバネ１５で付勢した球体１６を配設し、上記コイルバネ１５の外径を収納部１４の内径Ｃと略同寸法に形成すると共に、球体１６の外径をコイルバネ１５の内径よりも大きく外径よりも小さく形成して構成したことを特徴とする。これによると、係合凸部１３の先端を構成した球体１６が係合凹部１２に嵌合する構造としたことで、第１伝達部材８と第２伝達部材１１との連結力を安定させることができ、また、コイルバネ１５を収納部１４の内壁面に沿わせるように配設したことで、コイルバネ１５に力がかかって伸縮する際に座屈などを生じさせないようにでき、また、球体１６の外径をコイルバネ１５の内径よりも大きく外径よりも小さく形成したことで、係合凹部１２から球体１６にかかる力が収納部１４の内壁にかからずにコイルバネ１５の軸方向に向けて安定的にかけることができるのであり、しかしてクラッチ機構７の作動信頼性能を向上できる。   A toilet device according to a second aspect of the present invention is the toilet device according to the first aspect, wherein the engaging convex portion 13 is formed in the bottomed storage portion 14 that is opened in the peripheral surface of the transmission member and is recessed in the radial direction. A coil spring 15 is disposed at the back of the storage portion 14 and a sphere 16 urged by the coil spring 15 is disposed so as to face the opening of the storage portion 14, so that the outer diameter of the coil spring 15 is The outer diameter of the sphere 16 is formed to be larger than the inner diameter of the coil spring 15 and smaller than the outer diameter. According to this, the connection between the first transmission member 8 and the second transmission member 11 can be stabilized by adopting a structure in which the sphere 16 constituting the tip of the engagement convex portion 13 is fitted into the engagement concave portion 12. In addition, by arranging the coil spring 15 so as to be along the inner wall surface of the storage portion 14, it is possible to prevent buckling and the like from occurring when the coil spring 15 is expanded and contracted by force, and the sphere 16 Since the outer diameter of the coil spring 15 is larger than the inner diameter of the coil spring 15 and smaller than the outer diameter, the force applied to the sphere 16 from the engagement recess 12 is not applied to the inner wall of the storage portion 14 and is directed in the axial direction of the coil spring 15. Therefore, the operation reliability performance of the clutch mechanism 7 can be improved.

また、請求項３に係る便器装置は、請求項２において、上記係合凹部１２を球体１６に合致する円弧面で形成すると共に、係合凹部１２の凹没寸法Ａを球体１６の半径よりも短く形成したことを特徴とする。これによると、球体１６が係合凹部１２内に完全に嵌り込んで軸周方向に引っ掛かってしまうことを無くすることができ、第１伝達部材８と第２伝達部材１１との連結力を安定化できてクラッチ機構７の作動信頼性能を向上できる。   A toilet device according to a third aspect is the toilet device according to the second aspect, wherein the engaging recess 12 is formed by an arcuate surface that matches the sphere 16, and the recessed dimension A of the engaging recess 12 is larger than the radius of the sphere 16. It is characterized by being formed short. According to this, it is possible to eliminate the sphere 16 from being completely fitted into the engagement recess 12 and being caught in the axial circumferential direction, and the connection force between the first transmission member 8 and the second transmission member 11 can be stabilized. The operation reliability performance of the clutch mechanism 7 can be improved.

また、請求項４に係る便器装置は、請求項２または３において、上記コイルバネ１５の自然長を収納部１４の凹没寸法Ｂよりも短くしたことを特徴とする。これによると、収納部１４内にコイルバネ１５を完全に収めることができ、第１伝達部材８と第２伝達部材１１とを組み合わせる際に、第１伝達部材８に収めたコイルバネ１５の先端が第２伝達部材１１に引っ掛かることを防止でき、クラッチ機構７の組み立て性能を向上できる。   According to a fourth aspect of the present invention, the toilet device according to the second or third aspect is characterized in that the natural length of the coil spring 15 is shorter than the recessed dimension B of the storage portion 14. According to this, the coil spring 15 can be completely accommodated in the accommodating portion 14, and when the first transmission member 8 and the second transmission member 11 are combined, the tip of the coil spring 15 accommodated in the first transmission member 8 is the first. 2 It is possible to prevent the transmission member 11 from being caught, and the assembly performance of the clutch mechanism 7 can be improved.

また、請求項５に係る便器装置は、請求項１乃至４のいずれかにおいて、第１伝達部材８の中空部９を軸方向に凹設した有底穴状に形成し、この有底穴状の中空部９内に第２伝達部材１１を配設したときに中空部９の開口を覆って閉空間状にする庇片１７を第２伝達部材１１に形成したことを特徴とする。これによると、組み立て後のクラッチ機構７の中空部９を庇片１７にて閉空間状にしたことで、中空部９への異物の侵入や中空部９からの潤滑油の漏れなどを防止でき、クラッチ機構７の作動信頼性能を向上できる。   A toilet device according to a fifth aspect of the present invention is the toilet device according to any one of the first to fourth aspects, wherein the hollow portion 9 of the first transmission member 8 is formed in a bottomed hole shape recessed in the axial direction. When the 2nd transmission member 11 is arrange | positioned in the hollow part 9, the flange 17 which covers the opening of the hollow part 9 and makes it a closed space form was formed in the 2nd transmission member 11. It is characterized by the above-mentioned. According to this, since the hollow portion 9 of the assembled clutch mechanism 7 is closed by the flange piece 17, entry of foreign matter into the hollow portion 9 and leakage of lubricating oil from the hollow portion 9 can be prevented. The operation reliability performance of the clutch mechanism 7 can be improved.

また、請求項６に係る便器装置は、請求項１乃至５のいずれかにおいて、第１伝達部材８の中空部９に第２伝達部材１１を配設した状態で、第１伝達部材８と第２伝達部材１１との間に両者の接触面積を低減させるための空間部１８を形成したことを特徴とする。これによると、第１伝達部材８と第２伝達部材１１との間での接触抵抗を低減できて第１伝達部材８と第２伝達部材１１との連結力を安定化でき、クラッチ機構７の作動信頼性能を向上できる。   A toilet device according to a sixth aspect of the present invention is the toilet device according to any one of the first to fifth aspects, wherein the second transmission member 11 and the first transmission member 8 are disposed in the hollow portion 9 of the first transmission member 8. (2) A space 18 for reducing the contact area between the two transmission members 11 is formed. According to this, the contact resistance between the first transmission member 8 and the second transmission member 11 can be reduced, the coupling force between the first transmission member 8 and the second transmission member 11 can be stabilized, and the clutch mechanism 7 Operation reliability can be improved.

本発明は、便蓋及び便座の正確な自動開閉制御を確保させつつ駆動装置にクラッチ機構を設けると共に、クラッチ機構を設けた駆動装置の小型化を図ることができるという効果を有している。   The present invention has an effect that the drive device is provided with a clutch mechanism while ensuring accurate automatic opening / closing control of the toilet lid and toilet seat, and the drive device provided with the clutch mechanism can be downsized.

以下、本発明を添付図面に示す実施形態に基いて説明する。   Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings.

便器装置は、便器本体（図示せず）の後方上面に便蓋１及び便座２を取付けた支持体３を載置し、支持体３に便蓋１及び便座２を開閉駆動させる駆動装置４を設け、駆動装置４内の任意の歯車等の伝達部材の回転数を検知する回転数検知センサ５を設け、回転数検知センサ５の検知によって便蓋１及び便座２の位置を判定して便蓋１及び便座２の自動開閉を可能にして構成されている。具体的に、上記支持体３は本例ではいわゆる温水洗浄便座装置１９の本体部１９ａで構成されており、この温水洗浄便座装置１９は、図２のように、便器本体のボウル部の後方上面に幅方向に亙るように載設する本体部１９ａと、この本体部１９ａに取付けた便蓋１及び便座２とで形成されている。温水洗浄便座装置１９の本体部１９ａには、その幅方向側部に操作部２０が隣接して設けられ、使用者の局部洗浄を行う洗浄ノズル２１が便器本体のボウル部に臨むようにその幅方向の中央部位における前端下縁に備えられると共に、水道経路に接続された加温タンク等の洗浄ノズル２１への洗浄水供給手段が内装されており、上記操作部２０の操作によって局部洗浄が行われるようにされている。また、上記本体部１９ａには幅方向中央部に前方且つ上方に開口する凹所２２が形成され、この凹所２２の対向する両側面にそれぞれ一対の便蓋用枢支軸（図示せず）及び便座用枢支軸２３を突設し、便蓋１及び便座２を便蓋用枢支軸及び便座用枢支軸２３に枢支させて取付け、本体部１９ａの凹所２２の両幅方向の隣接部位に便蓋１用の駆動装置４及び便座２用の駆動装置４を内装し、便蓋１や便座２が連結された各枢支軸２３を各駆動装置４で回転駆動させることで便蓋１や便座２が自動で回動可能にされている。ここで、便蓋１や便座２の自動回動にかかる制御は、上記駆動装置４に設けた回転数検知センサ５によって駆動装置４内の任意の歯車等の伝達部材の回転数を検知することで、本体部１９ａに設けた制御部で便蓋１や便座２の回動位置を判定させると共にこの判定に基いて便蓋１や便座２をその上限位置や下限位置で停止させるようにして行われている（図３）。なお、便蓋１や便座２は基本的に使用者の操作部２０の操作によって制御部を介して開閉制御が行われるのであるが、本例の便蓋１ではこれに加えて便器装置に設けた人感センサ４０によって使用者がトイレに入室したことを検知したときには制御部によって自動的に開くような制御が行われている。   The toilet device has a support body 3 on which a toilet lid 1 and a toilet seat 2 are mounted on a rear upper surface of a toilet body (not shown), and a driving device 4 that opens and closes the toilet lid 1 and the toilet seat 2 on the support body 3. And a rotational speed detection sensor 5 for detecting the rotational speed of a transmission member such as an arbitrary gear in the drive device 4 is provided, and the positions of the toilet lid 1 and the toilet seat 2 are determined by the detection of the rotational speed detection sensor 5 and the toilet lid 1 and the toilet seat 2 can be automatically opened and closed. Specifically, in the present example, the support 3 is constituted by a main body 19a of a so-called warm water cleaning toilet seat device 19, and the warm water cleaning toilet seat device 19 has a rear upper surface of a bowl portion of the toilet body as shown in FIG. And a toilet lid 1 and a toilet seat 2 attached to the main body 19a. The main body portion 19a of the warm water washing toilet seat device 19 is provided with an operation portion 20 adjacent to the width direction side portion thereof, and the width of the washing nozzle 21 for performing the local washing of the user faces the bowl portion of the toilet body. A cleaning water supply means to the cleaning nozzle 21 such as a heating tank connected to the water supply path is provided at the lower edge of the front end at the central portion in the direction, and local cleaning is performed by operating the operation unit 20. It is supposed to be. The main body 19a is formed with a recess 22 that opens forward and upward in the center in the width direction, and a pair of toilet lid pivots (not shown) on opposite side surfaces of the recess 22 respectively. The toilet seat pivot shaft 23 is projected, the toilet lid 1 and the toilet seat 2 are pivotally attached to the toilet lid pivot shaft and the toilet seat pivot shaft 23, and both width directions of the recess 22 of the main body portion 19a are mounted. The drive device 4 for the toilet lid 1 and the drive device 4 for the toilet seat 2 are installed in the adjacent parts of the toilet, and the pivot shafts 23 to which the toilet lid 1 and the toilet seat 2 are connected are rotated by the drive devices 4. The toilet lid 1 and the toilet seat 2 are automatically rotatable. Here, the control related to the automatic rotation of the toilet lid 1 and the toilet seat 2 is to detect the rotation speed of a transmission member such as an arbitrary gear in the drive device 4 by the rotation speed detection sensor 5 provided in the drive device 4. Thus, the controller provided in the main body 19a determines the rotational positions of the toilet lid 1 and the toilet seat 2, and the toilet lid 1 and the toilet seat 2 are stopped at the upper limit position and the lower limit position based on this determination. (Fig. 3). The toilet lid 1 and the toilet seat 2 are basically controlled to be opened and closed through the control unit by the operation of the operation unit 20 by the user. In the toilet lid 1 of this example, in addition to this, the toilet device is provided in the toilet device. When the presence sensor 40 detects that the user has entered the toilet, control is performed so that the control unit automatically opens.

ところで、本発明は、上述のような回転数制御によって便蓋１及び便座２の自動開閉を行わせた便器装置において、自動回動中の便蓋１及び便座２への外力などに起因する駆動装置４への過負荷を逃がすために駆動装置４内にクラッチ機構７を設けるにあたって便蓋１及び便座２の正確な自動開閉制御を確保するような工夫を施したこと、並びにこのクラッチ機構７を設けた駆動装置４の小型化を図る工夫を施したことに特徴を有し、すなわち便蓋１及び便座２の開閉機構に特徴を有したものであるが、便蓋１の開閉機構と便座２の開閉機構とは共通した構成を有するがために便宜上、便蓋１の開閉機構の説明は省き、便座２の開閉機構をのみ以下に説明していく。   By the way, in the toilet apparatus in which the toilet lid 1 and the toilet seat 2 are automatically opened and closed by the rotation speed control as described above, the present invention is driven by an external force applied to the toilet lid 1 and the toilet seat 2 during the automatic rotation. In order to release the overload to the device 4, the provision of the clutch mechanism 7 in the drive device 4 has been devised to ensure accurate automatic opening and closing control of the toilet lid 1 and the toilet seat 2, and this clutch mechanism 7 The present invention is characterized in that the drive device 4 provided is devised to reduce the size, that is, the opening / closing mechanism of the toilet lid 1 and the toilet seat 2. However, for the sake of convenience, the description of the opening / closing mechanism of the toilet lid 1 will be omitted, and only the opening / closing mechanism of the toilet seat 2 will be described below.

図１には駆動装置４を示す。駆動装置４は、給電により駆動されるモータ６と、このモータ６の回転出力を伝達して便座用枢支軸２３を減速回転させる減速機構４ｂとを有して構成される。本例の減速機構４ｂは、詳しくはモータ６の回転出力軸に設けたピニオン２４から順に第１〜第４歯車２５〜２８を介して便座用枢支軸２３の基端に設けた歯車２９に至る減速歯車列で構成されており、カバー４ａ内に内装されている。また、駆動装置４には回転数検知センサ５が付設されており、具体的に第３歯車２７の回転数を検知可能にしている。また、駆動装置４の減速機構４ｂ内には駆動装置４にかかる過負荷を逃がすためのクラッチ機構７を設けているが、これは本例では第２歯車２６に設けている。後に詳述するが、クラッチ機構７は、駆動装置４にかかる過負荷を逃がすためにクラッチ機能を作動させたときには、モータ６と便座２との機構的連結を断ってモータ６の回転出力を便座２に伝達させないようにするものである。したがって、クラッチ機構７が機能した後には、クラッチ機構７の伝達経路の前後に位置するたとえばモータ６の回転数と便座２の回動位置とは関連性が無くなるものである。ここで、本例では駆動装置４内にクラッチ機構７を設けるにあたって、上述のようにクラッチ機構７を駆動装置４のモータ６に連結されたピニオン２４と回転数検知センサ５にて回転数が計測される第３歯車２７との間のたとえば第２歯車２６に設けている。これにより、クラッチ機構７が機能してモータ６と便蓋１及び便座２との機構的連結が断たれても、回転数検知センサ５にて回転数が計測される第３歯車２７と便座２との機構的連結を維持させて、引き続き回転数検知センサ５が検出する回転数と便座２の回動位置との関係を維持できるのであり（図４）、したがって、回転数検知センサ５が検出する回転数に基いた適宜の便座２の回動制御を行うことが可能にされているのである。なお、図４は、便座２が開き動作中にクラッチ機構７が機能した場合であって、その後モータ６の回転を止め、便座２が自重で閉じ位置にまで下降する動作を示すグラフである。   FIG. 1 shows the driving device 4. The drive device 4 includes a motor 6 that is driven by power feeding, and a speed reduction mechanism 4b that transmits the rotational output of the motor 6 and rotates the toilet seat pivot shaft 23 at a reduced speed. Specifically, the speed reduction mechanism 4b of the present example is provided on a gear 29 provided at the base end of the pivot shaft 23 for toilet seat through the first to fourth gears 25 to 28 in order from the pinion 24 provided on the rotation output shaft of the motor 6. It is comprised by the reduction gear train to reach, and is built in the cover 4a. Further, the drive device 4 is provided with a rotation speed detection sensor 5 to specifically detect the rotation speed of the third gear 27. In addition, a clutch mechanism 7 for releasing an overload applied to the drive device 4 is provided in the speed reduction mechanism 4b of the drive device 4, and this is provided in the second gear 26 in this example. As will be described in detail later, when the clutch mechanism 7 operates the clutch function in order to release the overload applied to the drive device 4, the clutch 6 is disconnected from the mechanical connection between the motor 6 and the toilet seat 2, and the rotational output of the motor 6 is supplied to the toilet seat. 2 is not transmitted. Therefore, after the clutch mechanism 7 functions, for example, the rotational speed of the motor 6 positioned before and after the transmission path of the clutch mechanism 7 and the rotational position of the toilet seat 2 are no longer relevant. Here, in this example, when the clutch mechanism 7 is provided in the drive device 4, the rotational speed is measured by the pinion 24 connected to the motor 6 of the drive device 4 and the rotational speed detection sensor 5 as described above. For example, the second gear 26 is provided between the third gear 27 and the third gear 27. Thereby, even if the clutch mechanism 7 functions and the mechanical connection between the motor 6 and the toilet lid 1 and the toilet seat 2 is disconnected, the third gear 27 and the toilet seat 2 whose rotational speed is measured by the rotational speed detection sensor 5. Thus, the relationship between the rotational speed detected by the rotational speed detection sensor 5 and the rotational position of the toilet seat 2 can be maintained (FIG. 4). Therefore, the rotational speed detection sensor 5 detects the rotational speed. Accordingly, it is possible to appropriately control the rotation of the toilet seat 2 based on the number of rotations. FIG. 4 is a graph showing an operation in which the clutch mechanism 7 functions while the toilet seat 2 is opened, and then the motor 6 stops rotating and the toilet seat 2 is lowered to its closed position by its own weight.

図５乃至図７には本例のクラッチ機構７を備えた第２歯車２６を示す。この第２歯車２６はモータ６の回転出力を、第１歯車２５から第３歯車２７に減速させて伝達するための歯車であって、第１歯車２５に噛合する大径歯車３０と第３歯車２７に噛合する小径歯車３１とを備えて形成され、駆動装置４のケース４ａに架設した軸１０に枢支されてケース４ａ内に配設されている。そして、この大径歯車３０と小径歯車３１とは別体の第１伝達部材８と第２伝達部材１１とに分けて形成されており、この第１伝達部材８と第２伝達部材１１との間でクラッチ機能を働かせるようにしたクラッチ機構７が備えられているのである。   5 to 7 show the second gear 26 provided with the clutch mechanism 7 of this example. The second gear 26 is a gear for decelerating and transmitting the rotation output of the motor 6 from the first gear 25 to the third gear 27, and has a large-diameter gear 30 and a third gear that mesh with the first gear 25. 27 is formed with a small-diameter gear 31 that meshes with the shaft 27, and is pivotally supported by the shaft 10 installed on the case 4 a of the driving device 4 and disposed in the case 4 a. The large-diameter gear 30 and the small-diameter gear 31 are separately formed into a first transmission member 8 and a second transmission member 11, and the first transmission member 8 and the second transmission member 11 are separated from each other. A clutch mechanism 7 is provided so that the clutch function can work between them.

詳しくは、第１伝達部材８は金属製部材であって、外周面に周方向に亙って上記大径歯車３０を刻設し、中央部に軸１０を挿通させる軸穴３２を穿孔すると共にこの軸穴３２の周囲に軸方向に凹没させた有底状の中空部９を形成し、この中空部９の内周面に亙って後述する係合凸部１３が嵌合する複数の係合凹部１２を連続的に凹設して形成されている。なお、本例の係合凹部１２は後述する本例の係合凸部１３の先端部位を構成する球体１６の球面に合致するような円弧断面状の溝で構成されている。更に言うと、この係合凹部１２における中空部９の内周面から径外方向への凹没寸法Ａは球体１６の半径よりも短く形成されている。   Specifically, the first transmission member 8 is a metal member, and the large-diameter gear 30 is engraved on the outer peripheral surface in the circumferential direction, and a shaft hole 32 through which the shaft 10 is inserted is drilled in the central portion. A plurality of bottomed hollow portions 9 that are recessed in the axial direction are formed around the shaft holes 32, and a plurality of engagement convex portions 13 to be described later are fitted over the inner peripheral surface of the hollow portions 9. The engaging recess 12 is formed by continuously recessing. In addition, the engagement recessed part 12 of this example is comprised by the groove | channel of circular cross-sectional shape which corresponds to the spherical surface of the spherical body 16 which comprises the front-end | tip part of the engagement convex part 13 of this example mentioned later. Furthermore, the recessed dimension A in the radially outward direction from the inner peripheral surface of the hollow portion 9 in the engaging recess 12 is formed shorter than the radius of the sphere 16.

また、第２伝達部材１１は樹脂製部材であって、外周面に周方向に亙って上記小径歯車３１が刻設された歯車部１１ａと第１伝達部材８の中空部９に収納する本体部１１ｂとを軸方向に一体化し、これら歯車部１１ａと本体部１１ｂとの中央に軸１０を挿通させる軸穴３２を穿孔して形成されている。ここで、第２伝達部材１１の本体部１１ｂの外周面には、その軸対称位置に第１伝達部材８の係合凹部１２に弾接・嵌合させる係合凸部１３が径外方向に突出するように複数設けられている。なお、本例の係合凸部１３は、第２伝達部材１１の本体部１１ｂの外周面に開口して径内方向に向けて穿設した有底孔状の収納部１４に、その奥方から順にコイルバネ１５、金属製の球体１６を配設したことで形成されている。このコイルバネ１５にはその自然長が収納部１４の径内方向への凹没寸法Ｂよりも短いものを用いており、このコイルバネ１５で付勢した球体１６は収納部１４の開口に臨むように配設可能にされている。このように収納部１４内にコイルバネ１５を完全に収めるようにしたことで、第１伝達部材８と第２伝達部材１１とを組み合わせる際には、第１伝達部材８に収めたコイルバネ１５の先端が第２伝達部材１１に引っ掛かることを防止でき、クラッチ機構７（第２歯車２６）の組み立て性能の向上が図られている。更に言うと、コイルバネ１５の外径は収納部１４の内径Ｃと略同寸法に形成されており、また球体１６の外径はコイルバネ１５の内径よりも大きく外径よりも小さく形成され、球体１６がコイルバネ１５に回転可能に保持されるようにされている。   The second transmission member 11 is a resin member, and is housed in the gear portion 11 a in which the small-diameter gear 31 is engraved on the outer peripheral surface in the circumferential direction and the hollow portion 9 of the first transmission member 8. The portion 11b is integrated in the axial direction, and a shaft hole 32 through which the shaft 10 is inserted is formed in the center between the gear portion 11a and the main body portion 11b. Here, on the outer peripheral surface of the main body portion 11b of the second transmission member 11, an engagement convex portion 13 that is elastically contacted and fitted to the engagement concave portion 12 of the first transmission member 8 in the axially symmetric position in the radially outward direction. A plurality are provided so as to protrude. In addition, the engagement convex part 13 of this example is opened in the bottomed hole-shaped storage part 14 opened in the outer peripheral surface of the main-body part 11b of the 2nd transmission member 11, and drilled toward the radial inner direction from the back. The coil spring 15 and the metal sphere 16 are arranged in this order. The coil spring 15 has a natural length shorter than the indentation dimension B in the radially inward direction of the storage portion 14, and the sphere 16 biased by the coil spring 15 faces the opening of the storage portion 14. It can be arranged. Thus, when the first transmission member 8 and the second transmission member 11 are combined, the tip of the coil spring 15 housed in the first transmission member 8 is obtained by completely accommodating the coil spring 15 in the storage portion 14. Can be prevented from being caught by the second transmission member 11, and the assembly performance of the clutch mechanism 7 (second gear 26) is improved. More specifically, the outer diameter of the coil spring 15 is formed to be approximately the same as the inner diameter C of the storage portion 14, and the outer diameter of the spherical body 16 is larger than the inner diameter of the coil spring 15 and smaller than the outer diameter. Is rotatably held by the coil spring 15.

第１伝達部材８の中空部９に第２伝達部材１１の本体部１１ｂを収納した際には、図６のように、第２伝達部材１１から径外方向に付勢された係合凸部１３が第１伝達部材８の係合凹部１２に弾接・嵌合されたことで第１伝達部材８と第２伝達部材１１とが一体化されてクラッチ機構７を備えた第２歯車２６が形成される。ここで、上記第１伝達部材８と第２伝達部材１１との一体化にかかる力を連結力と称する。すなわち、回動中の便座２に外力などがかかって駆動装置４の減速機構４ｂに過負荷が生じて第１伝達部材８と第２伝達部材１１との間で軸周方向に滑り力が生じたとき、この滑り力が上記連結力よりも大きい場合には、第１伝達部材８に対し相対的に軸周方向にズレようとする第２伝達部材１１の係合凹部１２によって係合凸部１３がコイルバネ１５の付勢に抗うように径内方向へ押し込まれて係合凹部１２から抜け出るのであり、係合凸部１３と係合凹部１２との嵌合が解除されて第１伝達部材８と第２伝達部材１１との連結が解除されたことで上記過負荷を逃がすことができるのであり、このようにして過負荷が駆動装置４を破損するのを防止するようにクラッチ機構７のクラッチ機能が作動するようになっている。   When the main body portion 11b of the second transmission member 11 is housed in the hollow portion 9 of the first transmission member 8, as shown in FIG. 6, the engagement convex portion urged radially outward from the second transmission member 11 13 is elastically contacted and fitted into the engagement recess 12 of the first transmission member 8 so that the first transmission member 8 and the second transmission member 11 are integrated, and the second gear 26 having the clutch mechanism 7 is provided. It is formed. Here, the force applied to the integration of the first transmission member 8 and the second transmission member 11 is referred to as a coupling force. That is, an external force or the like is applied to the rotating toilet seat 2 and an overload is generated in the speed reduction mechanism 4 b of the drive device 4, and a sliding force is generated in the axial direction between the first transmission member 8 and the second transmission member 11. When the sliding force is greater than the coupling force, the engagement convex portion is caused by the engagement concave portion 12 of the second transmission member 11 that is displaced relative to the first transmission member 8 in the axial circumferential direction. 13 is pushed inward in the radial direction so as to resist the urging of the coil spring 15 and then comes out of the engagement recess 12, so that the engagement between the engagement projection 13 and the engagement recess 12 is released and the first transmission member 8 is released. The overload can be released by releasing the connection between the first transmission member 11 and the second transmission member 11, and the clutch of the clutch mechanism 7 can be prevented from being damaged by the overload in this way. The function is activated.

上述のように本例の駆動装置４内に設けるクラッチ機構７の構造は、第１伝達部材８の中空部９内に第２伝達部材１１を配設すると共に、係合凸部１３と係合凹部１２との軸径方向の弾接・嵌合にて第１伝達部材８と第２伝達部材１１とを一体化させる構造にされている。したがって、本例のクラッチ機構７は、背景技術に例示したクラッチ機構７のように従動側伝達部材４２と駆動側伝達部材４１とコイルバネ４３とを軸方向に並設したり円錐突部４１ａの外周面と穴部４２ａの内周面との軸方向へのすべり寸法を必要とする構造のものではなく、軸方向への必要寸法を極力小さくできたものであることから、クラッチ機構７、ひいては駆動装置４の大幅な小型化を図り得たものである。   As described above, the structure of the clutch mechanism 7 provided in the drive device 4 of the present example is that the second transmission member 11 is disposed in the hollow portion 9 of the first transmission member 8 and the engagement convex portion 13 is engaged. The first transmission member 8 and the second transmission member 11 are integrated by elastic contact and fitting with the recess 12 in the axial direction. Therefore, the clutch mechanism 7 of the present example includes the driven-side transmission member 42, the drive-side transmission member 41, and the coil spring 43 arranged in parallel in the axial direction as in the clutch mechanism 7 illustrated in the background art, or the outer periphery of the conical protrusion 41a. This is not a structure that requires a slip dimension in the axial direction between the surface and the inner peripheral surface of the hole 42a, but the required dimension in the axial direction can be reduced as much as possible. The device 4 can be greatly reduced in size.

更に言うと、本例のクラッチ機構７では、軸径方向にバネ付勢される係合凸部１３が軸対称位置に複数設けてあることから、係合凸部１３と係合凹部１２との弾接・嵌合に起因した軸１０にかかる力は相殺されるようになって軸１０への荷重バランスを良好にでき、構造的にクラッチ機構７の長寿命化や作動信頼性能の向上が図られている。また、着脱される係合凸部１３と係合凹部１２とがいずれも金属製であることによって耐摩擦性能が向上され、クラッチ機構７の長寿命化が図られている。また、係合凸部１３の先端が球体１６による球面にされていて円弧面状の係合凹部１２に弾接・嵌合されているので、第１伝達部材８と第２伝達部材１１との間の連結力を安定させることができ、クラッチ機構７の作動信頼性能が向上されている。更に言うと、係合凸部１３の先端を構成した球体１６が回転自在にされたことでも、上記連結力の安定化が図られてクラッチ機構７の作動信頼性能の更なる向上が図られている。また、係合凹部１２における中空部９の内周面からの凹没寸法Ａが球体１６の半径よりも短く形成されているので、球体１６が係合凹部１２内に完全に嵌り込んで軸周方向に引っ掛かってしまうことを無くすることができ、これによっても上記連結力の安定化が図られてクラッチ機構７の作動信頼性能の向上が図られている。   More specifically, in the clutch mechanism 7 of this example, since a plurality of engaging convex portions 13 that are spring-biased in the axial radial direction are provided at axially symmetrical positions, the engagement convex portion 13 and the engaging concave portion 12 The force applied to the shaft 10 caused by the elastic contact / fitting is canceled out so that the load balance on the shaft 10 can be improved, and the life of the clutch mechanism 7 can be structurally improved and the operation reliability performance can be improved. It has been. Further, since both the engaging projections 13 and the engaging recesses 12 to be attached and detached are made of metal, the friction resistance is improved and the life of the clutch mechanism 7 is extended. Further, since the tip of the engaging convex portion 13 is formed into a spherical surface by the spherical body 16 and is elastically contacted / fitted to the arc-shaped engaging concave portion 12, the first transmission member 8 and the second transmission member 11 The connection force between them can be stabilized, and the operation reliability performance of the clutch mechanism 7 is improved. Furthermore, even if the sphere 16 constituting the tip of the engaging convex portion 13 is made rotatable, the connection force is stabilized and the operation reliability performance of the clutch mechanism 7 is further improved. Yes. Further, since the recessed dimension A from the inner peripheral surface of the hollow portion 9 in the engaging recess 12 is formed to be shorter than the radius of the sphere 16, the sphere 16 is completely fitted into the engaging recess 12 and the axial circumference It is possible to eliminate the possibility of being caught in the direction, which also stabilizes the coupling force and improves the operation reliability performance of the clutch mechanism 7.

また、コイルバネ１５の外径を収納部１４の内径Ｃと略同寸法に形成すると共に、球体１６の外径をコイルバネ１５の内径よりも大きく外径よりも小さく形成しているので、球体１６の収納部１４の内壁面への当接を回避しつつコイルバネ１５を収納部１４の内壁面に沿わせるように配設でき、しかして、球体１６が係合凹部１２から受けた軸周方向の押圧力を収納部１４の内壁に作用させずにコイルバネ１５にその軸方向に安定的に作用させることができ、そしてコイルバネ１５は収納部１４の内壁面に沿った状態で上記押圧力による伸縮を行うために伸縮するコイルバネ１５に座屈などを生じさせないようにできるのであり、これによってもクラッチ機構７の作動信頼性能の向上が図られているのである。   In addition, the outer diameter of the coil spring 15 is formed to be substantially the same as the inner diameter C of the storage portion 14, and the outer diameter of the sphere 16 is larger than the inner diameter of the coil spring 15 and smaller than the outer diameter. The coil spring 15 can be disposed along the inner wall surface of the storage unit 14 while avoiding contact with the inner wall surface of the storage unit 14. It is possible to cause the coil spring 15 to stably act in the axial direction without acting on the inner wall of the storage portion 14, and the coil spring 15 expands and contracts by the pressing force in a state along the inner wall surface of the storage portion 14. Therefore, it is possible to prevent buckling and the like from occurring in the coil spring 15 that expands and contracts, and this also improves the operation reliability performance of the clutch mechanism 7.

また、本例では、図７のように、第１伝達部材８の中空部９に第２伝達部材１１を配設した状態で、第１伝達部材８と第２伝達部材１１との間に両者の接触面積を低減させるための空間部１８を形成してある。詳しくは、この空間部１８は、たとえば第１伝達部材８の中空部９の内周面と第２伝達部材１１の本体部１１ｂの外周面の間や、第１伝達部材８の中空部９への第２伝達部材１１の本体部１１ｂの挿入方向における両者の対向面間に形成されている。これによると、第１伝達部材８と第２伝達部材１１との間での接触抵抗を低減させて第１伝達部材８と第２伝達部材１１との間の連結力の安定化が図られ、クラッチ機構７の作動信頼性能の向上が図られているのである。   Further, in this example, as shown in FIG. 7, both are disposed between the first transmission member 8 and the second transmission member 11 with the second transmission member 11 disposed in the hollow portion 9 of the first transmission member 8. A space 18 for reducing the contact area is formed. Specifically, the space portion 18 is, for example, between the inner peripheral surface of the hollow portion 9 of the first transmission member 8 and the outer peripheral surface of the main body portion 11b of the second transmission member 11 or to the hollow portion 9 of the first transmission member 8. The second transmission member 11 is formed between the opposing surfaces in the insertion direction of the main body portion 11b. According to this, the contact resistance between the first transmission member 8 and the second transmission member 11 is reduced, and the connection force between the first transmission member 8 and the second transmission member 11 is stabilized. The operation reliability performance of the clutch mechanism 7 is improved.

なお、本例では、第２伝達部材１１の本体部１１ｂの外周面に係合凸部１３を径外方向へ突設すると共に第１伝達部材８の中空部９の内周面に係合凹部１２を凹設しているが、第２伝達部材１１の本体部１１ｂの外周面に係合凹部１２を凹設すると共に第１伝達部材８の中空部９の内周面から係合凸部１３を径内方向へ突設することができるのは、言うまでもない。   In this example, the engaging convex portion 13 protrudes radially outward on the outer peripheral surface of the main body portion 11 b of the second transmission member 11 and the engaging concave portion on the inner peripheral surface of the hollow portion 9 of the first transmission member 8. 12, the engaging recess 12 is recessed in the outer peripheral surface of the main body 11 b of the second transmission member 11, and the engaging protrusion 13 is formed from the inner peripheral surface of the hollow portion 9 of the first transmission member 8. Needless to say, can be projected inwardly in the radial direction.

以下には、本発明の実施の形態の他例を列挙する。ここでは、先例と共通する部位は同符合を付して説明を省き、要部のみ説明をするものとする。   Other examples of the embodiment of the present invention are listed below. Here, parts common to the previous examples are given the same reference numerals, description thereof is omitted, and only main parts are described.

図８には本発明の実施の形態の他例を示す。本例は、第２伝達部材１１の本体部１１ｂに凹設した収納部１４を外周面及び軸方向端面に開口せる溝状に形成した例である。これによると、先例の孔状の収納部１４に比べて収納部１４の形状を簡単にでき、第２伝達部材１１、ひいてはクラッチ機構７の製造性の向上を図ることができる。   FIG. 8 shows another example of the embodiment of the present invention. This example is an example in which the storage portion 14 provided in the body portion 11b of the second transmission member 11 is formed in a groove shape that opens to the outer peripheral surface and the axial end surface. According to this, the shape of the storage portion 14 can be simplified as compared with the hole-shaped storage portion 14 of the previous example, and the productivity of the second transmission member 11 and thus the clutch mechanism 7 can be improved.

図９には本発明の実施の形態の更に他例を示す。本例は、第２伝達部材１１の本体部１１ｂにおける第１伝達部材８の中空部９への挿入方向と反対方向の端部に径外方向に庇片１７を突設し、この庇片１７にて組み立て後のクラッチ機構７の中空部９を閉空間状にした例である。これによると、中空部９への異物の侵入や中空部９からの潤滑油の漏れなどを防止でき、クラッチ機構７の作動信頼性能の向上を図ることができる。   FIG. 9 shows still another example of the embodiment of the present invention. In this example, a collar piece 17 protrudes radially outward from an end of the main body portion 11 b of the second transmission member 11 opposite to the insertion direction of the first transmission member 8 into the hollow portion 9. This is an example in which the hollow portion 9 of the clutch mechanism 7 after assembly is closed. According to this, intrusion of foreign matter into the hollow portion 9 and leakage of lubricating oil from the hollow portion 9 can be prevented, and the operation reliability performance of the clutch mechanism 7 can be improved.

図１０には本発明の実施の形態の更に他例を示す。本例は、係合凹部１２の断面形状を最深部分を境に曲率の大きい急勾配面１２ａと曲率の小さい緩勾配面１２ｂとなるように形成し、第１伝達部材８と第２伝達部材１１との間で、第１伝達部材８に対して回転する第２伝達部材１１の回転方向のうち、係合凹部１２の急勾配面１２ａに係合凸部１３が引っ掛かる方向である一方の回転方向のみに制動をかけるようにした例である。たとえば便座２の開き動作時に便座２の自重を支えて持ち上げる方向と便座２の閉じ動作時に便座２の自重を支えてブレーキをかける方向とは同方向であり、この方向と上記係合凹部１２の急勾配面１２ａに係合凸部１３が引っ掛かる方向とを同方向にすると、構造的に駆動装置４にかかる過負荷への耐性（第１伝達部材８と第２伝達部材１１との間の連結力）を向上できて、これに応じてコイルバネ１５の付勢力を低減できてむやみに係合凸部１３の係合凹部１２への弾接・嵌合を強力に行わないでも済むことから、クラッチ機構７の作動信頼性能の向上が図られているのである。   FIG. 10 shows still another example of the embodiment of the present invention. In this example, the cross-sectional shape of the engaging recess 12 is formed to be a steeply inclined surface 12a having a large curvature and a gently-gradient surface 12b having a small curvature with respect to the deepest portion, and the first transmission member 8 and the second transmission member 11 are formed. Among the rotational directions of the second transmission member 11 that rotates with respect to the first transmission member 8, the one rotational direction that is the direction in which the engaging convex portion 13 is caught on the steeply inclined surface 12 a of the engaging concave portion 12. This is an example in which only braking is applied. For example, the direction of supporting and lifting the weight of the toilet seat 2 during the opening operation of the toilet seat 2 and the direction of applying the brake while supporting the weight of the toilet seat 2 during the closing operation of the toilet seat 2 are the same direction. When the direction in which the engaging convex portion 13 is hooked on the steeply inclined surface 12a is the same direction, structurally resistant to overload applied to the drive device 4 (connection between the first transmission member 8 and the second transmission member 11) Force) and the biasing force of the coil spring 15 can be reduced accordingly, and it is not necessary to forcefully engage and disengage the engaging convex portion 13 with the engaging concave portion 12. The operation reliability performance of the mechanism 7 is improved.

図１１には本発明の実施の形態の更に他例を示す。本例は、第２伝達部材１１の本体部１１ｂの外周面に亙って複数の係合凹部１２を連続的に凹設すると共に第１伝達部材８の中空部９の内周面から係合凸部１３を径内方向へ突設した例であって、係合凸部１３を板バネ３３を用いて形成させた例である。詳しくは、板バネ３３は、その幅方向の中央に径内方向に突出する折曲部３３ａを形成し、その幅方向の両端部に第１伝達部材８の中空部９の内周面に設けた取付部３４に対して係止固定させる係合部３３ｂを設けて形成されている。また、第１伝達部材８の中空部９の内周面は、板バネ３３を取付ける溝状の取付部３４を周方向の所定間隔毎に設けると共に、隣接する取付部３４の間に径外方向に凹設した凹所３５を設けて形成されている。ここで、本例の取付部３４は隣接する一対の板バネ３３の両係合部３３ｂを係止固定できるようにされて第１伝達部材８の中空部９の周方向の４ヵ所に設けられており、しかして第１伝達部材８には４枚の板バネ３３が取付けられる。詳しくは、図１１（ｂ）のように、板バネ３３は隣接する取付部３４に架け渡されるように第１伝達部材８の中空部９に取付けられるのであり、このとき板バネ３３は自身の弾性によってその幅方向の中央部が径外方向、すなわち凹所３５内に撓み変形可能にされている。なお、板バネ３３の幅方向の中央部から径内方向に突出した折曲部３３ａが係合凸部１３を構成している。しかして、クラッチ機構７（第２歯車２６）を形成するべく第１伝達部材８の中空部９に第２伝達部材１１の本体部１１ｂを収納したときには、第２伝達部材１１の本体部１１ｂの外周面に形成した係合凹部１２に、第１伝達部材８の中空部９に取付けた板バネ３３の折曲部３３ａで構成される係合凸部１３が弾接・嵌合され、第１伝達部材８と第２伝達部材１１との一体化がなされるのである。   FIG. 11 shows still another example of the embodiment of the present invention. In this example, a plurality of engaging recesses 12 are continuously provided over the outer peripheral surface of the main body portion 11 b of the second transmission member 11 and engaged from the inner peripheral surface of the hollow portion 9 of the first transmission member 8. This is an example in which the convex portion 13 protrudes in the radial direction, and the engaging convex portion 13 is formed using a leaf spring 33. Specifically, the leaf spring 33 is formed with a bent portion 33a projecting radially inward in the center in the width direction, and provided on the inner peripheral surface of the hollow portion 9 of the first transmission member 8 at both ends in the width direction. An engaging portion 33b that is locked and fixed to the mounting portion 34 is provided. In addition, the inner peripheral surface of the hollow portion 9 of the first transmission member 8 is provided with groove-like attachment portions 34 for attaching the leaf springs 33 at predetermined intervals in the circumferential direction, and radially outward between adjacent attachment portions 34. It is formed by providing a recess 35 provided in the recess. Here, the attachment portions 34 of this example are provided at four locations in the circumferential direction of the hollow portion 9 of the first transmission member 8 so that both the engaging portions 33b of the pair of adjacent leaf springs 33 can be locked and fixed. Thus, four leaf springs 33 are attached to the first transmission member 8. Specifically, as shown in FIG. 11B, the leaf spring 33 is attached to the hollow portion 9 of the first transmission member 8 so as to be bridged between the adjacent attachment portions 34. Due to elasticity, the central portion in the width direction can be bent and deformed in the radially outward direction, that is, in the recess 35. The bent portion 33 a that protrudes in the radially inward direction from the central portion in the width direction of the leaf spring 33 constitutes the engaging convex portion 13. Thus, when the main body portion 11b of the second transmission member 11 is housed in the hollow portion 9 of the first transmission member 8 so as to form the clutch mechanism 7 (second gear 26), the main body portion 11b of the second transmission member 11 is The engagement convex portion 13 formed by the bent portion 33a of the leaf spring 33 attached to the hollow portion 9 of the first transmission member 8 is elastically contacted and fitted to the engagement concave portion 12 formed on the outer peripheral surface. The transmission member 8 and the second transmission member 11 are integrated.

本例の上記構成のクラッチ機構７にあっても、先の例と同様、第１伝達部材８の中空部９内に第２伝達部材１１を配設すると共に、係合凸部１３と係合凹部１２との軸径方向の弾接・嵌合にて第１伝達部材８と第２伝達部材１１とを一体化させる構造にされている。したがって、先の例と同様、背景技術に例示したクラッチ機構７のように従動側伝達部材４２と駆動側伝達部材４１とコイルバネ４３とを軸方向に並設したり円錐突部４１ａの外周面と穴部４２ａの内周面との軸方向へのすべり寸法を必要とする構造のものではなく、軸方向への必要寸法を極力小さくできたものであることから、クラッチ機構７、ひいては駆動装置４の大幅な小型化を図り得たものである。   Even in the clutch mechanism 7 having the above-described configuration in this example, the second transmission member 11 is disposed in the hollow portion 9 of the first transmission member 8 and the engagement convex portion 13 is engaged, as in the previous example. The first transmission member 8 and the second transmission member 11 are integrated by elastic contact and fitting with the recess 12 in the axial direction. Therefore, as in the previous example, the driven-side transmission member 42, the drive-side transmission member 41, and the coil spring 43 are arranged in parallel in the axial direction as in the clutch mechanism 7 illustrated in the background art, and the outer peripheral surface of the conical protrusion 41a. The clutch mechanism 7 and thus the drive device 4 are not of a structure that requires a sliding dimension in the axial direction with the inner peripheral surface of the hole 42a, but that the required dimension in the axial direction can be minimized. Can be greatly reduced in size.

図１２には本発明の実施の形態の更に他例を示す。本例は、係合凸部１３を屈曲板バネ３６を用いて形成させた例である。詳しくは、屈曲板バネ３６は、図１２（ｃ）のように角の無い滑らかな山形状に屈曲させた山部３７を３ヵ所に連設したことで形成されている。また、第２伝達部材１１の本体部１１ｂは、軸穴３２の周囲から径外方向に突設した突出片３８と、この突出片３８から第１伝達部材８の中空部９への挿入方向に複数突設させた突出棒３９とで構成されている。屈曲板バネ３６は第２伝達部材１１の本体部１１ｂに取付けられるのであるが、これは屈曲板バネ３６の連設した３つの山部３７のうちの両側の山部３７ｂを隣接する一対の突出棒３９に引掛けることで行われるのであり、突出棒３９に引掛けられない中央の山部３７ａが係合凸部１３を構成している。なお、本例では、上記突出棒３９は軸周方向に計６本設けられており、屈曲板バネ３６は第２伝達部材１１の本体部１１ｂに計３個、軸対称になるように取付けられている。第２伝達部材１１の本体部１１ｂに取付けた屈曲板バネ３６にあっては、自身の弾性によって係合凸部１３を構成する中央の山部３７ａが径外方向に付勢されている。しかして、クラッチ機構７（第２歯車２６）を形成するべく第１伝達部材８の中空部９に第２伝達部材１１の本体部１１ｂを収納したときには、第２伝達部材１１の本体部１１ｂに取付けた屈曲板バネ３６の中央の山部３７ａで構成される係合凸部１３が、第１伝達部材８の中空部９の内周面に形成した係合凹部１２に弾接・嵌合され、第１伝達部材８と第２伝達部材１１との一体化がなされるのである。   FIG. 12 shows still another example of the embodiment of the present invention. In this example, the engaging projection 13 is formed using a bent leaf spring 36. Specifically, the bent leaf spring 36 is formed by connecting three ridge portions 37 bent in a smooth mountain shape without corners as shown in FIG. The main body portion 11b of the second transmission member 11 has a protruding piece 38 projecting radially outward from the periphery of the shaft hole 32, and the insertion direction from the protruding piece 38 to the hollow portion 9 of the first transmission member 8. A plurality of protruding bars 39 are provided. The bent leaf spring 36 is attached to the main body portion 11 b of the second transmission member 11, and this is a pair of protrusions adjacent to the peak portions 37 b on both sides of the three peak portions 37 connected to the bent leaf spring 36. This is done by hooking the rod 39, and the central peak portion 37 a that is not hooked by the protruding rod 39 constitutes the engaging convex portion 13. In this example, a total of six projecting rods 39 are provided in the axial circumferential direction, and a total of three bent leaf springs 36 are attached to the main body portion 11b of the second transmission member 11 so as to be axially symmetric. ing. In the bent leaf spring 36 attached to the main body portion 11b of the second transmission member 11, the central peak portion 37a constituting the engagement convex portion 13 is biased in the radially outward direction by its own elasticity. Thus, when the main body portion 11b of the second transmission member 11 is stored in the hollow portion 9 of the first transmission member 8 so as to form the clutch mechanism 7 (second gear 26), the main body portion 11b of the second transmission member 11 The engaging convex portion 13 formed by the central peak portion 37 a of the attached bent leaf spring 36 is elastically contacted and fitted to the engaging concave portion 12 formed on the inner peripheral surface of the hollow portion 9 of the first transmission member 8. The first transmission member 8 and the second transmission member 11 are integrated.

本例の上記構成のクラッチ機構７にあっても、先の例と同様、第１伝達部材８の中空部９内に第２伝達部材１１を配設すると共に、係合凸部１３と係合凹部１２との軸径方向の弾接・嵌合にて第１伝達部材８と第２伝達部材１１とを一体化させる構造にされている。したがって、先の例と同様、背景技術に例示したクラッチ機構７のように従動側伝達部材４２と駆動側伝達部材４１とコイルバネ４３とを軸方向に並設したり円錐突部４１ａの外周面と穴部４２ａの内周面との軸方向へのすべり寸法を必要とする構造のものではなく、軸方向への必要寸法を極力小さくできたものであることから、クラッチ機構７、ひいては駆動装置４の大幅な小型化を図り得たものである。   Even in the clutch mechanism 7 having the above-described configuration in this example, the second transmission member 11 is disposed in the hollow portion 9 of the first transmission member 8 and the engagement convex portion 13 is engaged, as in the previous example. The first transmission member 8 and the second transmission member 11 are integrated by elastic contact and fitting with the recess 12 in the axial direction. Therefore, as in the previous example, the driven-side transmission member 42, the drive-side transmission member 41, and the coil spring 43 are arranged in parallel in the axial direction as in the clutch mechanism 7 illustrated in the background art, and the outer peripheral surface of the conical protrusion 41a. The clutch mechanism 7 and thus the drive device 4 are not of a structure that requires a sliding dimension in the axial direction with the inner peripheral surface of the hole 42a, but that the required dimension in the axial direction can be minimized. Can be greatly reduced in size.

本発明の実施の形態の例の駆動装置であり、（ａ）は外部の正面図であり、（ｂ）は内部の正面図である。It is the drive device of the example of embodiment of this invention, (a) is an external front view, (b) is an internal front view. 同上の温水洗浄便座装置の斜視図である。It is a perspective view of a warm water washing toilet seat apparatus same as the above. 同上の便座の正常運転状態を示すグラフである。It is a graph which shows the normal driving | running state of a toilet seat same as the above. 同上のクラッチ機構が作動した場合の便座の運転状態を示すグラフである。It is a graph which shows the driving | running state of a toilet seat when a clutch mechanism same as the above operates. 同上のクラッチ機構（第２歯車）であり、（ａ）は斜視図であり、（ｂ）は分解斜視図である。It is a clutch mechanism (2nd gearwheel) same as the above, (a) is a perspective view, (b) is an exploded perspective view. 同上のクラッチ機構（第２歯車）の平面図である。It is a top view of a clutch mechanism (2nd gearwheel) same as the above. 同上のクラッチ機構（第２歯車）の縦断面図である。It is a longitudinal cross-sectional view of a clutch mechanism (2nd gearwheel) same as the above. 本発明の実施の形態の他例の第２伝達部材の斜視図である。It is a perspective view of the 2nd transmission member of other examples of an embodiment of the invention. 本発明の実施の形態の更に他例のクラッチ機構（第２歯車）の縦断面図である。It is a longitudinal cross-sectional view of the clutch mechanism (2nd gearwheel) of the further another example of embodiment of this invention. 本発明の実施の形態の更に他例の第１伝達部材の平面図である。It is a top view of the 1st transmission member of other examples of an embodiment of the invention. 本発明の実施の形態の更に他例のクラッチ機構（第２歯車）であり、（ａ）は分解斜視図であり、（ｂ）は一部を透視した平面図である。It is the clutch mechanism (2nd gearwheel) of the further another example of embodiment of this invention, (a) is a disassembled perspective view, (b) is the top view which saw through partially. 本発明の実施の形態の更に他例であり、（ａ）はクラッチ機構（第２歯車）の平面図であり、（ｂ）は（ａ）のＸ−Ｘ線断面図であり、（ｃ）は屈曲板バネの斜視図である。It is a further example of the embodiment of the present invention, (a) is a plan view of a clutch mechanism (second gear), (b) is a sectional view taken along line XX of (a), (c). FIG. 3 is a perspective view of a bent leaf spring. 背景技術の問題を説明するクラッチ機構が作動した場合の便座の運転状態を示すグラフである。It is a graph which shows the driving | running state of a toilet seat when the clutch mechanism explaining the problem of background art act | operates. 背景技術の例の駆動装置の一部切欠正面図である。It is a partially notched front view of the drive device of the example of background art.

符号の説明Explanation of symbols

１ 便蓋
２ 便座
３ 支持体
４ 駆動装置
４ａ ケース
５ 回転数検知センサ
６ モータ
７ クラッチ機構
８ 第１伝達部材８
９ 中空部
１０ 軸
１１ 第２伝達部材
１２ 係合凹部
１３ 係合凸部
１９ 温水洗浄便座装置 DESCRIPTION OF SYMBOLS 1 Toilet lid 2 Toilet seat 3 Support body 4 Drive apparatus 4a Case 5 Rotational speed detection sensor 6 Motor 7 Clutch mechanism 8 First transmission member 8
DESCRIPTION OF SYMBOLS 9 Hollow part 10 Shaft 11 2nd transmission member 12 Engagement recessed part 13 Engagement convex part 19 Hot water washing toilet seat apparatus

Claims (6)

便器本体のボウル部の後方上面に便蓋及び便座を取付ける支持体を設けると共にこの支持体に取り付けた便蓋及び便座を開閉駆動させる駆動装置を設け、この駆動装置内の任意の歯車等の伝達部材の回転数を検知する回転数検知センサを設け、この回転数検知センサの検知によって便蓋及び便座の位置を判定して便蓋及び便座の自動開閉を行わせた便器装置において、駆動装置のモータに連結された伝達部材と回転数検知センサにて回転数が計測される伝達部材との間にクラッチ機構を介装し、上記クラッチ機構を、中央に中空部を形成した第１伝達部材と、上記中空部内に配設されて駆動装置のケースに架設した軸に枢支された第２伝達部材とで構成し、第１伝達部材の内周面または第２伝達部材の外周面のいずれか一方にその周方向に亙って複数の係合凹部を凹設し、他方に上記一方の周面に向けてバネ付勢させた係合凸部を設け、この係合凸部を係合凹部に嵌合したことで第１伝達部材と第２伝達部材とを一体化したことを特徴とする便器装置。   A support for attaching the toilet lid and toilet seat is provided on the rear upper surface of the bowl portion of the toilet bowl body, and a drive device for opening and closing the toilet lid and toilet seat attached to the support is provided, and transmission of an arbitrary gear or the like in the drive device In the toilet apparatus provided with a rotation speed detection sensor for detecting the rotation speed of the member, and determining the position of the toilet lid and the toilet seat by the detection of the rotation speed detection sensor and automatically opening and closing the toilet lid and the toilet seat, A clutch mechanism is interposed between a transmission member connected to the motor and a transmission member whose rotational speed is measured by the rotational speed detection sensor, and the clutch mechanism is formed with a first transmission member having a hollow portion formed in the center. And a second transmission member disposed in the hollow portion and pivotally supported by a shaft installed on the case of the drive device, and either the inner peripheral surface of the first transmission member or the outer peripheral surface of the second transmission member亙 in its circumferential direction on one side A plurality of engaging recesses are provided, and the other is provided with an engaging protrusion that is spring-biased toward the one peripheral surface, and the engaging protrusion is fitted into the engaging recess. A toilet device in which a transmission member and a second transmission member are integrated. 上記係合凸部を、伝達部材の周面に開口して径方向に凹没させた有底状の収納部を形成し、この収納部の奥方にコイルバネを配設すると共に収納部の開口に臨ませるように上記コイルバネで付勢した球体を配設し、上記コイルバネの外径を収納部の内径と略同寸法に形成すると共に、球体の外径をコイルバネの内径よりも大きく外径よりも小さく形成して構成したことを特徴とする請求項１記載の便器装置。   A bottomed storage portion is formed by opening the engagement convex portion on the peripheral surface of the transmission member and being recessed in the radial direction, and a coil spring is disposed at the back of the storage portion and the opening of the storage portion is formed. A spherical body urged by the coil spring is disposed so as to face, and the outer diameter of the coil spring is formed to be approximately the same as the inner diameter of the storage portion, and the outer diameter of the spherical body is larger than the inner diameter of the coil spring and larger than the outer diameter. The toilet device according to claim 1, wherein the toilet device is formed to be small. 上記係合凹部を球体に合致する円弧面で形成すると共に、係合凹部の凹没寸法を球体の半径よりも短く形成したことを特徴とする請求項２記載の便器装置。   3. The toilet device according to claim 2, wherein the engaging recess is formed by an arcuate surface that matches the sphere, and the recess size of the engaging recess is shorter than the radius of the sphere. 上記コイルバネの自然長を収納部の凹没寸法よりも短くしたことを特徴とする請求項２または３記載の便器装置。   4. The toilet device according to claim 2, wherein the natural length of the coil spring is shorter than the recessed dimension of the storage portion. 第１伝達部材の中空部を軸方向に凹設した有底穴状に形成し、この有底穴状の中空部内に第２伝達部材を配設したときに中空部の開口を覆って閉空間状にする庇片を第２伝達部材に形成したことを特徴とする請求項１乃至４のいずれかに記載の便器装置。   The hollow portion of the first transmission member is formed in a bottomed hole shape that is recessed in the axial direction, and when the second transmission member is disposed in the bottomed hole-shaped hollow portion, the opening of the hollow portion is covered and closed space The toilet device according to any one of claims 1 to 4, wherein the hook piece is formed on the second transmission member. 第１伝達部材の中空部に第２伝達部材を配設した状態で、第１伝達部材と第２伝達部材との間に両者の接触面積を低減させるための空間部を形成したことを特徴とする請求項１乃至５のいずれかに記載の便器装置。   With the second transmission member disposed in the hollow portion of the first transmission member, a space for reducing the contact area between the first transmission member and the second transmission member is formed. The toilet device according to any one of claims 1 to 5.

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