JP2008256318A - Hot air heater - Google Patents

Hot air heater Download PDF

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JP2008256318A
JP2008256318A JP2007101384A JP2007101384A JP2008256318A JP 2008256318 A JP2008256318 A JP 2008256318A JP 2007101384 A JP2007101384 A JP 2007101384A JP 2007101384 A JP2007101384 A JP 2007101384A JP 2008256318 A JP2008256318 A JP 2008256318A
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screw
hole
motor shaft
shutter
hot air
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JP4847388B2 (en
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Hiroetsu Sato
裕悦 佐藤
Yoshiei Kiryu
吉栄 桐生
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Corona Corp
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Corona Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a hot air heater for preventing the occurrence of cracking in a rotary crank with stress on the rotary crank due to the up-and-down movement of a shutter which opens/closes a hot air outlet. <P>SOLUTION: The front end of a screw 23 is threaded and fixed to a screwed hole 29 of the rotary crank 11. So, the rotating force of a motor shaft 21 is transmitted to the screwed hole 29 of the rotary crank 11 which does not pass from the front end of the screw 23. Thereby, stress on the rotary crank 11 is applied around the screwed hole 29 of the rigid rotary crank 11 to prevent the occurrence of chapping or cracking in an area where the screwed hole 29 of the rotary crank 11 is threaded to the front end of the screw 23 even when the motor shaft 21 is repetitively operated. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

この発明は、温風暖房機に関するものである。   The present invention relates to a hot air heater.

従来よりこの種の温風暖房機として、温風吹出口をシャッターにて開閉し、暖房運転開始時にシャッターを動作して温風吹出口を開放し、暖房運転停止時にシャッターを動作して温風吹出口を閉鎖するものがあった。
特開平５−２２３３４８号公報 Conventionally, as this type of hot air heater, the hot air outlet is opened and closed with a shutter, the shutter is operated to open the hot air outlet when heating operation is started, and the shutter is operated to stop the hot air outlet when heating operation is stopped. There was something to close.
JP-A-5-223348

この特許文献１に開示された温風暖房機は、図１及び図２及び図３に示すように、１は燃焼器、２はケーシングに固定される送風ファン、３は温風吹出口、４は前記温風吹出口３に設けられたルーバーフィン、５は前記燃焼器１の上部に設けられた燃焼筒である。６は燃焼室であり、前記燃焼器１からの燃焼ガスと前記送風ファン２によって送風された空気とが混合され、適度な温風となって前記温風吹出口３から室内へ吹き出される。７は前面パネル、８は運転スイッチ、９はシャッターで、前記シャッター９は前面パネル７の下部裏面に固設され、前記温風吹出口４を自動で開閉する。   As shown in FIGS. 1, 2, and 3, the hot air heater disclosed in Patent Document 1 includes a combustor, 2 a blower fan fixed to a casing, 3 a hot air outlet, and 4 Louver fins 5 provided at the hot air outlet 3 are combustion cylinders provided at the upper part of the combustor 1. Reference numeral 6 denotes a combustion chamber, in which the combustion gas from the combustor 1 and the air blown by the blower fan 2 are mixed, and the hot air is blown into the room from the hot air outlet 3 as an appropriate warm air. 7 is a front panel, 8 is an operation switch, 9 is a shutter, and the shutter 9 is fixed to the lower back surface of the front panel 7 and automatically opens and closes the hot air outlet 4.

１０はシャッター駆動用モータ、１１は回転クランクで、前記回転クランク１１の一端はシャッター駆動用モータ１０の軸方向に対して垂直方向に取り付けてあり、その他端が前記シャッター９の上部に設けられた横長穴１２に横方向移動可能に係合されている。   Reference numeral 10 denotes a shutter driving motor, 11 denotes a rotating crank, one end of the rotating crank 11 is attached in a direction perpendicular to the axial direction of the shutter driving motor 10, and the other end is provided above the shutter 9. The laterally long hole 12 is engaged so as to be movable in the lateral direction.

１３は温風吹出口下部にシャッターによる圧力を検出する圧力検出部、１４は燃焼筒５からの熱気と送風ファン２からの冷風とを混合する風洞、１５は本体内部の左右に設けられたレール、１６はシャッター９の左右両側に２対ずつ設けられているローラーで、レール１５とローラ１６は高分子樹脂にて形成されて摩擦抵抗が低減されているものである。 13 is a pressure detector for detecting the pressure by the shutter at the lower part of the hot air outlet, 14 is a wind tunnel for mixing the hot air from the combustion cylinder 5 and the cold air from the blower fan 2, 15 is a rail provided on the left and right inside the main body, Reference numeral 16 denotes two rollers provided on the left and right sides of the shutter 9, and the rail 15 and the roller 16 are formed of a polymer resin to reduce frictional resistance.

１７は一方のレールの上下に設けられた位置センサーであるフォトインタラプタで、シャッター９が上限位置または下限位置まで来ると、シャッター９の位置センサーがある側の上下に設けられた突部１８がフォトインタラプタ１７の光を遮ることによりこれを検出するものである。１９は表示部で、各種運転モードの表示をする。２０は制御基板で、運転を制御する制御回路が搭載されているものである。 17 is a photo interrupter which is a position sensor provided above and below one rail. When the shutter 9 reaches the upper limit position or the lower limit position, protrusions 18 provided on the upper and lower sides of the shutter 9 on the side where the position sensor is located This is detected by blocking the light from the interrupter 17. A display unit 19 displays various operation modes. Reference numeral 20 denotes a control board on which a control circuit for controlling operation is mounted.

この温風暖房機は、暖房停止状態では、シャッター９は閉じて温風吹出口３を覆っており、暖房運転を開始するために運転スイッチ８をオン操作すると、ヒーターが通電されて燃焼器１の予熱が開始される。
この燃焼器１の予熱が完了するとシャッター駆動用モータ１０が半回転し、同時にこのシャッター駆動用モータ１０に固定された回転クランク１１が半円を描くように回りながら下方から上方へ移動する。シャッター９はローラー１６とレール１５とにより上下方向の移動については自由度があり、横方向の自由度は規制されているので、回転クランク１１の先端部で、シャッター９の上部に設けられた横長穴１２により回転クランク１１の横方向の動きを吸収しながら回転クランク１１が上方へ移動することによりシャッター９を上方に移動させる。 In the warm air heater, when the heating is stopped, the shutter 9 is closed and the warm air outlet 3 is covered. When the operation switch 8 is turned on to start the heating operation, the heater is energized and the combustor 1 Preheating is started.
When the preheating of the combustor 1 is completed, the shutter driving motor 10 rotates halfway, and at the same time, the rotating crank 11 fixed to the shutter driving motor 10 moves from below to above while rotating in a semicircle. The shutter 9 has a degree of freedom in movement in the vertical direction by the roller 16 and the rail 15, and the degree of freedom in the horizontal direction is restricted. The shutter 9 is moved upward by moving the rotary crank 11 upward while absorbing the lateral movement of the rotary crank 11 through the hole 12.

また、暖房運転を停止させるために運転スイッチ８をオフにすると、燃焼器１への燃油の供給が停止され、燃焼を止めるように制御する。ここで燃焼器１が燃焼を停止しても、温風暖房機内は予熱でしばらくは熱いので、送風ファン２は所定時間が経過して機内が充分に冷えると、送風ファン２を停止させ、シャッター９を閉動作させる。シャッター９の閉動作は開動作と逆で、シャッター駆動用モータ１０が半回転し、同時にこのシャッター駆動用モータ１０に固定された回転クランク１１が半円を描くように回りながら上方から下方へ移動するものである。   Further, when the operation switch 8 is turned off to stop the heating operation, the supply of the fuel oil to the combustor 1 is stopped, and control is performed so as to stop the combustion. Even if the combustor 1 stops the combustion, the inside of the hot air heater is preheated and is hot for a while, so that the blower fan 2 stops the blower fan 2 when the predetermined time has elapsed and the interior is sufficiently cooled, and the shutter 9 is closed. The closing operation of the shutter 9 is opposite to the opening operation, and the shutter driving motor 10 is rotated halfway, and at the same time, the rotating crank 11 fixed to the shutter driving motor 10 moves from above to below while rotating in a semicircle. To do.

そしてこの従来のものにおいては、モータ軸２１の側面に軸の略中心までのネジ挿入穴２２が形成されると共に、回転クランク１１のモータ軸２１と係合する側の端部側面には、ネジ２３が差し込まれ該ネジ２３と螺合するねじ切り部２４が形成されているネジ用孔２５が形成され、モータ軸２１を回転クランク１１のモータ軸２１と係合する側に形成したモータ軸用孔２６に差し込んだ状態で、ネジ用孔２５にネジ２３を差し込んでネジ止めすると、ネジ２３のねじ切りされていない先端部分がネジ挿入穴２２に挿入されるものである。   In this prior art, a screw insertion hole 22 is formed on the side surface of the motor shaft 21 up to the approximate center of the shaft, and a screw on the end side surface of the rotary crank 11 that engages with the motor shaft 21 is formed on the side surface. The motor shaft hole is formed on the side where the motor shaft 21 is engaged with the motor shaft 21 of the rotary crank 11. When the screw 23 is inserted into the screw hole 25 in the state of being inserted into the screw hole 26 and fixed with screws, the tip portion of the screw 23 that is not threaded is inserted into the screw insertion hole 22.

又、このネジ用孔２５にネジ２３を差し込んでネジ止めした時、ネジ２３のねじ切りされていない先端部分の外周と、ネジ挿入穴２２の内周との間に隙間が生じるようにネジ挿入穴２２の内径はネジ２３の先端部分の外径より大きく設けられているものである。   Further, when the screw 23 is inserted into the screw hole 25 and fixed, a screw insertion hole is formed so that a gap is formed between the outer periphery of the unthreaded tip portion of the screw 23 and the inner periphery of the screw insertion hole 22. The inner diameter of 22 is larger than the outer diameter of the tip portion of the screw 23.

ところでこの従来のものにおいては、このシャッター９を上下させていると、この従来のシャッター駆動用モータ１０と回転クランク１１の取り付け方法では、回転クランク１１のネジ用孔２５の部分に応力がかかり、何回も動作することで合成樹脂製の回転クランク１１が割れたり、モータ軸２１と回転クランク１１を係合しているネジ２３が次第に緩んできて、モータ軸２１と回転クランク１１との間にすべりが生じてシャッター９の動きに悪影響を及ぼしてしまうという問題があった。   By the way, in this conventional apparatus, when the shutter 9 is moved up and down, in the conventional method of mounting the shutter driving motor 10 and the rotating crank 11, stress is applied to the screw hole 25 portion of the rotating crank 11, The rotating crank 11 made of synthetic resin is cracked by operating many times, or the screw 23 that engages the motor shaft 21 and the rotating crank 11 is gradually loosened. There was a problem in that slipping would adversely affect the movement of the shutter 9.

そこで本発明は、合成樹脂製の回転クランクが割れないようにして、シャッターの動きに悪影響を及ぼさない温風暖房機を提供することを目的とするものである。   Accordingly, an object of the present invention is to provide a hot air heater that does not adversely affect the movement of the shutter so that the rotating crank made of synthetic resin is not broken.

そこで前記課題を解決するため、本発明では、温風吹出口を有する本体と、気化させた燃料を燃焼する燃焼器と、該燃焼器の燃焼により発生した熱を温風吹出口から吹き出させる送風ファンと、前記温風吹出口を開閉するシャッタと、該シャッタを駆動するシャッター駆動用モータと、一端を前記シャッター駆動用モータのモータ軸に係合し他端をシャッタに係合した回転クランクとを備えた温風暖房機に於いて、前記シャッター駆動用モータのモータ軸には、回転クランクの一端とモータ軸とを係合するネジが貫通するネジ挿入孔を形成し、前記回転クランクの一端にはモータ軸が挿入されるモータ軸用孔が形成されると共に、回転クランクの一端の側部からモータ軸用孔まで貫通するネジ用孔と、モータ軸用孔内周でネジ用孔の反対側にねじ切りされたネジ受け穴を形成し、前記回転クランクのモータ軸用孔にモータ軸が挿入された状態で、ネジがネジ用孔からモータ軸のネジ挿入孔を貫通してネジの先端がネジ受け穴と係合し、前記回転クランクの他端は前記シャッター上部に設けられた横長穴に横方向移動可能に係合されたものである。   Therefore, in order to solve the above problems, in the present invention, a main body having a hot air outlet, a combustor that burns vaporized fuel, and a blower fan that blows out heat generated by the combustion of the combustor from the hot air outlet. A shutter that opens and closes the hot air outlet, a shutter drive motor that drives the shutter, and a rotary crank that has one end engaged with the motor shaft of the shutter drive motor and the other end engaged with the shutter. In the hot air heater, the motor shaft of the shutter driving motor is formed with a screw insertion hole through which a screw that engages one end of the rotating crank and the motor shaft passes, and the motor is formed at one end of the rotating crank. A motor shaft hole into which the shaft is inserted is formed, a screw hole penetrating from one side of the rotating crank to the motor shaft hole, and on the opposite side of the screw hole on the inner periphery of the motor shaft hole A screw receiving hole that is cut out is formed, and the motor shaft is inserted into the motor shaft hole of the rotary crank, and the screw passes through the screw insertion hole of the motor shaft from the screw hole and the tip of the screw is screwed. Engaging with a receiving hole, the other end of the rotating crank is engaged with a horizontally elongated hole provided in the upper part of the shutter so as to be movable in the lateral direction.

また、請求項２では、請求項１記載の温風暖房機において、前記回転クランクのモータ軸用孔にモータ軸が挿入された時、モータ軸用孔の内周とモータ軸の外周との間に隙間が生じるようにモータ軸用孔が形成されていると共に、ネジがネジ用孔からモータ軸のネジ挿入孔を貫通してネジの先端がネジ受け穴と係合した時、ネジ用孔及びネジ挿入孔の内周とネジの外周との間に隙間が生じるようにネジ用孔及びネジ挿入孔が形成されているものである。   According to a second aspect of the present invention, in the hot air heater according to the first aspect, when the motor shaft is inserted into the motor shaft hole of the rotary crank, the inner space between the motor shaft hole and the outer periphery of the motor shaft. When the screw shaft passes through the screw insertion hole of the motor shaft from the screw hole and the tip of the screw engages with the screw receiving hole, the screw hole and A screw hole and a screw insertion hole are formed so that a gap is formed between the inner periphery of the screw insertion hole and the outer periphery of the screw.

本発明によれば、ネジの先端部分と回転クランクのネジ受け穴とが螺合して固定されているので、モータ軸の回転力が、ネジの先端部分から貫通していない回転クランクのネジ受け穴に伝達され、それにより回転クランクにかかる応力が剛性のある回転クランクのネジ受け穴周辺にかかるので、モータ軸が繰り返し動作しても、回転クランクのネジ受け穴とネジの先端部分とが螺合している部分にひびや割れが発生するのを防止できるものである。   According to the present invention, since the tip portion of the screw and the screw receiving hole of the rotating crank are screwed together and fixed, the rotational force of the motor shaft does not penetrate from the tip portion of the screw. Since the stress applied to the rotating crank is applied to the periphery of the rigid screw receiving hole of the rotating crank, the screw receiving hole of the rotating crank and the tip of the screw are screwed even if the motor shaft repeatedly operates. It is possible to prevent cracks and cracks from occurring in the joined portions.

またネジが回転クランクのネジ用孔とモータ軸のネジ挿入孔との間に隙間が生じるように、ネジの先端が回転クランクのネジ受け穴と螺合して固定されているので、余計な応力が回転クランクにかからず、合成樹脂からなる回転クランクの割れの発生を防止でき、また、シャッター駆動用モータ自体のバックラッシュによるガタツキと、回転クランクとモータ軸とのガタツキが回転クランクのネジ用孔とモータ軸のネジ挿入孔との間の隙間で調整されてシャッターの動きをスムーズにすることができるものである。   In addition, since the screw tip is screwed into the screw receiving hole of the rotating crank and fixed so that a gap is created between the screw hole of the rotating crank and the screw insertion hole of the motor shaft, excessive stress is applied. Can prevent cracking of the rotating crank made of synthetic resin and prevents backlash of the shutter drive motor itself and backlash between the rotating crank and the motor shaft. It is adjusted in the gap between the hole and the screw insertion hole of the motor shaft, and the movement of the shutter can be made smooth.

本発明の一実施形態を図面に基づいて説明する。
尚、従来の技術と同じものについては説明を省略する。
モータ軸２１の側面には、軸を水平方向に貫通するネジ挿入孔２７が形成され、該ネジ挿入孔２７の内径は、軸を水平方向に貫通するネジ２３の外周とネジ挿入孔２７の内周との間に隙間が生じるように、ネジ２３の外径より大きく設けられているものである。 An embodiment of the present invention will be described with reference to the drawings.
In addition, description is abbreviate | omitted about the same thing as the prior art.
A screw insertion hole 27 that penetrates the shaft in the horizontal direction is formed on the side surface of the motor shaft 21, and the inner diameter of the screw insertion hole 27 is equal to the outer periphery of the screw 23 that penetrates the shaft in the horizontal direction and It is provided larger than the outer diameter of the screw 23 so that a gap is formed between the circumference and the circumference.

回転クランク１１のモータ軸２１と係合する側の端部側面には、ネジ２３が差し込まれ該ネジ２３が貫通するネジ用孔２５が形成され、該ネジ用孔２５の内径は、貫通するネジ２３の外周とネジ用孔２５の内周との間に隙間が生じるように、ネジ２３の外径より大きく設けられているものである。
又、回転クランク１１のモータ軸２１と係合する側の端部の反対側には、シャッター９の上部に設けられた横長穴１２と係合するシャッター係合部２８が立設して形成されているものである。 A screw hole 25 through which the screw 23 is inserted and through which the screw 23 passes is formed on the side surface of the end portion of the rotary crank 11 that engages with the motor shaft 21. The outer diameter of the screw 23 is larger than the outer diameter of the screw 23 so that a gap is formed between the outer periphery of the screw 23 and the inner periphery of the screw hole 25.
On the opposite side of the end of the rotating crank 11 that engages with the motor shaft 21, a shutter engaging portion 28 that engages with the horizontally long hole 12 provided in the upper portion of the shutter 9 is formed upright. It is what.

又、回転クランク１１のネジ用孔２５の対面側には、先端部分がねじ切りされているネジ２３の先端部分と螺合するために、内周がねじ切りされたネジ受け穴２９が形成されているものである。   Further, a screw receiving hole 29 whose inner periphery is threaded is formed on the opposite side of the screw hole 25 of the rotary crank 11 so as to be screwed with the tip portion of the screw 23 whose tip portion is threaded. Is.

次にシャッター９の動作について説明する。
暖房停止状態では、シャッター９は閉じて温風吹出口３を覆っている。
この状態から暖房運転を行うため、まず運転スイッチ８をオン操作すると、運転開始信号が制御基板２０の制御回路に送られ、燃焼器１内のヒーターを通電し予熱を開始する。 Next, the operation of the shutter 9 will be described.
In the heating stop state, the shutter 9 is closed and covers the hot air outlet 3.
In order to perform the heating operation from this state, first, when the operation switch 8 is turned on, an operation start signal is sent to the control circuit of the control board 20, and the heater in the combustor 1 is energized to start preheating.

予熱が完了すると、制御回路はシャッター駆動用モータ１０を駆動するように制御し、それによりシャッター駆動用モータ１０は半回転し、同時にこのシャッター駆動用モータ１０に固定された回転クランク１１が半円を描くように回りながら下方から上方へ移動する。   When the preheating is completed, the control circuit controls to drive the shutter driving motor 10, whereby the shutter driving motor 10 is rotated halfway, and at the same time, the rotating crank 11 fixed to the shutter driving motor 10 is semicircular. Move from the bottom to the top while turning to draw.

シャッター９はローラー１６とレール１５とにより上下方向の移動については自由度があり、横方向の自由度は規制されているので、回転クランク１１の先端部でシャッター９の上部に設けられた横長穴１２に横方向の動きに対して自由度を持たせて係合された部分では、横長穴１２により回転クランク１１の横方向の動きを吸収しながら回転クランク１１が上方へ移動することによりシャッター９を上方に移動させるものである。   The shutter 9 has a degree of freedom in movement in the vertical direction by the roller 16 and the rail 15, and the degree of freedom in the lateral direction is restricted. Therefore, the oblong hole provided in the upper part of the shutter 9 at the tip of the rotating crank 11. In a portion engaged with the motor 12 with a degree of freedom with respect to the lateral movement, the rotary crank 11 moves upward while absorbing the lateral movement of the rotary crank 11 through the lateral elongated hole 12, so that the shutter 9. Is moved upward.

この時、回転クランク１１とシャッター駆動用モータ１０のモーター軸２１は、回転クランク１１のモータ軸用孔２６にモーター軸２１が隙間を生じる状態で挿入され、その状態でネジ２３が隙間を生じる状態でネジ用孔２５から差し込まれ、更にモーター軸２１のネジ挿入孔２７を隙間を生じる状態で貫通し、ネジ２３の先端が回転クランク１１のねじ切りされているネジ受け穴２９と螺合して回転クランク１１とモーター軸２１が結合されているため、シャッター駆動用モータ１０のモーター軸２１が回転を始めると、まずモーター軸２１のネジ挿入孔２７の内部と、ネジ２３でその中を貫通している部分とが接触し、その状態で更にモーター軸２１が回転すると、ネジ２３の先端が螺合しているネジ受け穴２９にモーター軸２１の回転が伝達され、回転クランク１１が移動するものである。   At this time, the rotary crank 11 and the motor shaft 21 of the shutter driving motor 10 are inserted into the motor shaft hole 26 of the rotary crank 11 in a state in which the motor shaft 21 has a gap, and the screw 23 has a gap in that state. Is inserted from the screw hole 25 and further penetrates through the screw insertion hole 27 of the motor shaft 21 with a gap, and the tip of the screw 23 is screwed into the screw receiving hole 29 of the rotary crank 11 to be rotated. Since the crank 11 and the motor shaft 21 are coupled together, when the motor shaft 21 of the shutter driving motor 10 starts to rotate, first, the inside of the screw insertion hole 27 of the motor shaft 21 and the screw 23 penetrate therethrough. When the motor shaft 21 further rotates in this state, the rotation of the motor shaft 21 enters the screw receiving hole 29 in which the tip of the screw 23 is screwed. Is transmitted, in which rotating the crank 11 moves.

このように従来のものは、内周がねじ切りされ、貫通して孔状になっている回転クランク１１のネジ用孔２５とネジ２３の頭近くに形成されたネジの部分とが螺合して固定され、モータ軸２１の回転力がネジ用孔２５が貫通して剛性が低くなったネジ用孔２５とネジ２３との螺合部分に作用して、モータ軸２１が繰り返し動作することで合成樹脂製の回転クランク１１のネジ用孔２５とネジ２３との螺合部分にひびや割れが発生してしまうのに対し、本発明はネジ２３の先端部分と回転クランク１１のネジ受け穴２９とが螺合して固定されているので、モータ軸２１の回転力が、ネジ２３の先端部分から貫通していない回転クランク１１のネジ受け穴２９に伝達され、それにより回転クランク１１にかかる応力が剛性のある回転クランク１１のネジ受け穴２９周辺にかかるので、モータ軸２１が繰り返し動作しても、回転クランク１１のネジ受け穴２９とネジ２３の先端部分とが螺合している部分にひびや割れが発生するのを防止できるものである。 As described above, in the conventional device, the screw hole 25 of the rotating crank 11 that is threaded through the inner periphery and has a hole shape and the screw portion formed near the head of the screw 23 are screwed together. The rotational force of the motor shaft 21 is fixed and acts on the screwed portion between the screw hole 25 and the screw 23 whose rigidity is lowered through the screw hole 25, and the motor shaft 21 is repeatedly operated to synthesize. While the screw hole 25 and the screw 23 of the resin-made rotating crank 11 are cracked or cracked, the present invention has a tip portion of the screw 23 and a screw receiving hole 29 of the rotating crank 11. , And the rotational force of the motor shaft 21 is transmitted from the tip portion of the screw 23 to the screw receiving hole 29 of the rotating crank 11 so that the stress applied to the rotating crank 11 is Rigid rotating crank 11 Since it is applied to the periphery of the screw receiving hole 29, even if the motor shaft 21 is repeatedly operated, cracks and cracks are generated in the portion where the screw receiving hole 29 of the rotating crank 11 and the tip of the screw 23 are screwed together. It can be prevented.

またモータ軸用孔の内周とモータ軸の外周との間に隙間が生じるようにモータ軸用孔が形成されると共に、ネジ２３が回転クランク１１のネジ用孔２５とモータ軸２１のネジ挿入孔２７との間に隙間が生じるようにして、ネジ２３の先端が回転クランク１１のネジ受け穴２９と螺合して固定されているので、余計な応力が回転クランク１１にかからず、合成樹脂からなる回転クランク１１の割れの発生を防止でき、また、シャッター駆動用モータ１０自体のバックラッシュによるガタツキと、回転クランク１１とモータ軸２１とのガタツキが回転クランク１１のネジ用孔２５とモータ軸２１のネジ挿入孔２７との間の隙間で調整されてシャッター９の動きをスムーズにすることができるものである。   The motor shaft hole is formed so that a gap is formed between the inner periphery of the motor shaft hole and the outer periphery of the motor shaft, and the screw 23 is inserted into the screw hole 25 of the rotary crank 11 and the motor shaft 21. Since the tip of the screw 23 is screwed and fixed to the screw receiving hole 29 of the rotary crank 11 so that a gap is formed between the hole 27 and the rotary crank 11, excessive stress is not applied to the rotary crank 11, and synthesis is performed. The occurrence of cracks in the rotating crank 11 made of resin can be prevented, and the backlash of the shutter driving motor 10 itself and the backlash between the rotating crank 11 and the motor shaft 21 are the screw hole 25 of the rotating crank 11 and the motor. The movement of the shutter 9 can be made smooth by adjusting the clearance between the shaft 21 and the screw insertion hole 27.

本発明の温風暖房機の全体図Overall view of the hot air heater of the present invention 同温風暖房機の正面図。The front view of the same warm air heater. 同温風暖房機の断面図。Sectional drawing of the same warm air heater. 同モータ軸と回転クランクの係合部分の要部断面図。Sectional drawing of the principal part of the engaging part of the motor shaft and a rotation crank. 従来のモータ軸と回転クランクの係合部分の要部断面図。Sectional drawing of the principal part of the engaging part of the conventional motor shaft and a rotation crank.

符号の説明Explanation of symbols

１ 燃焼器
２ 送風ファン
３ 温風吹出口
９ シャッター
１０ シャッター駆動用モータ
１１ 回転クランク
１２ 横長穴
２１ モータ軸
２３ ネジ
２５ ネジ用孔
２６ モータ軸用孔
２７ ネジ挿入孔
２９ ネジ受け穴 DESCRIPTION OF SYMBOLS 1 Combustor 2 Blower fan 3 Hot air outlet 9 Shutter 10 Motor for shutter drive 11 Rotating crank
12 Horizontally long hole 21 Motor shaft 23 Screw 25 Screw hole
26 Motor shaft hole 27 Screw insertion hole 29 Screw receiving hole

Claims (2)

温風吹出口を有する本体と、気化させた燃料を燃焼する燃焼器と、該燃焼器の燃焼により発生した熱を温風吹出口から吹き出させる送風ファンと、前記温風吹出口を開閉するシャッタと、該シャッタを駆動するシャッター駆動用モータと、一端を前記シャッター駆動用モータのモータ軸に係合し他端をシャッタに係合した回転クランクとを備えた温風暖房機に於いて、前記シャッター駆動用モータのモータ軸には、回転クランクの一端とモータ軸とを係合するネジが貫通するネジ挿入孔を形成し、前記回転クランクの一端にはモータ軸が挿入されるモータ軸用孔が形成されると共に、回転クランクの一端の側部からモータ軸用孔まで貫通するネジ用孔と、モータ軸用孔内周でネジ用孔の反対側にねじ切りされたネジ受け穴を形成し、前記回転クランクのモータ軸用孔にモータ軸が挿入された状態で、ネジがネジ用孔からモータ軸のネジ挿入孔を貫通してネジの先端がネジ受け穴と係合し、前記回転クランクの他端は前記シャッター上部に設けられた横長穴に横方向移動可能に係合されたことを特徴とする温風暖房機。   A main body having a hot air outlet, a combustor that burns vaporized fuel, a blower fan that blows out heat generated by combustion of the combustor from the hot air outlet, a shutter that opens and closes the hot air outlet, In a warm air heater comprising: a shutter driving motor for driving a shutter; and a rotary crank having one end engaged with a motor shaft of the shutter driving motor and the other end engaged with a shutter. The motor shaft of the motor is formed with a screw insertion hole through which a screw that engages one end of the rotating crank and the motor shaft passes, and a motor shaft hole into which the motor shaft is inserted is formed at one end of the rotating crank. A screw hole penetrating from one side of the rotating crank to the motor shaft hole, and a screw receiving hole threaded on the opposite side of the screw hole on the inner periphery of the motor shaft hole, With the motor shaft inserted into the motor shaft hole of the rank, the screw penetrates the screw insertion hole of the motor shaft from the screw hole and the screw tip engages with the screw receiving hole, and the other end of the rotating crank Is a hot air heater characterized by being engaged with a horizontally elongated hole provided in the upper part of the shutter so as to be movable in the lateral direction. 前記回転クランクのモータ軸用孔にモータ軸が挿入された時、モータ軸用孔の内周とモータ軸の外周との間に隙間が生じるようにモータ軸用孔が形成されていると共に、ネジがネジ用孔からモータ軸のネジ挿入孔を貫通してネジの先端がネジ受け穴と係合した時、ネジ用孔及びネジ挿入孔の内周とネジの外周との間に隙間が生じるようにネジ用孔及びネジ挿入孔が形成されていることを特徴とする請求項１記載の温風暖房機。   When the motor shaft is inserted into the motor shaft hole of the rotating crank, the motor shaft hole is formed so that a gap is formed between the inner periphery of the motor shaft hole and the outer periphery of the motor shaft. When the screw passes through the screw insertion hole of the motor shaft from the screw hole and the tip of the screw engages with the screw receiving hole, a gap is generated between the inner periphery of the screw hole and screw insertion hole and the outer periphery of the screw. The hot air heater according to claim 1, wherein a screw hole and a screw insertion hole are formed in the hot air heater.
JP2007101384A 2007-04-09 2007-04-09 Hot air heater Active JP4847388B2 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0317463A (en) * 1989-06-13 1991-01-25 Matsushita Electric Ind Co Ltd Hot air heater
JPH05223348A (en) * 1991-08-16 1993-08-31 Mitsubishi Electric Corp Hot air heater
JP2006528755A (en) * 2004-02-27 2006-12-21 ローベルト　ボツシユ　ゲゼルシヤフト　ミツト　ベシユレンクテル　ハフツング Crankshaft device and molded body for crankshaft device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0317463A (en) * 1989-06-13 1991-01-25 Matsushita Electric Ind Co Ltd Hot air heater
JPH05223348A (en) * 1991-08-16 1993-08-31 Mitsubishi Electric Corp Hot air heater
JP2006528755A (en) * 2004-02-27 2006-12-21 ローベルト　ボツシユ　ゲゼルシヤフト　ミツト　ベシユレンクテル　ハフツング Crankshaft device and molded body for crankshaft device

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