JP7307002B2

Movatterモバイル変換

Info

Publication number: JP7307002B2
Application number: JP2020015985A
Authority: JP
Inventors: 真吾柘植
Original assignee: Rinnai Corp
Current assignee: Rinnai Corp
Priority date: 2020-02-03
Filing date: 2020-02-03
Publication date: 2023-07-11
Anticipated expiration: 2040-02-03
Also published as: CN113217943B; JP2021124216A; CN113217943A

Description

Translated fromJapanese

本発明は、バーナへの供給ガス量を可変する、弁筐内に進退自在に設けられたニードル弁と、操作レバーの揺動に連動して回転する、弁筐の外側に設けられたカム板と、ニードル弁に固定され、カム板に形成されたカム孔に係合するピンとを備え、カム板の回転でカム孔とピンとを介してニードル弁が進退し、バーナへの供給ガス量が調節されるようにした火力調節装置に関する。 The present invention includes a needle valve provided in a valve housing that can move back and forth, and a cam plate provided outside the valve housing that rotates in conjunction with swinging of an operating lever. and a pin fixed to the needle valve and engaged with a cam hole formed in the cam plate. When the cam plate rotates, the needle valve advances and retreats through the cam hole and the pin to adjust the amount of gas supplied to the burner. It relates to a thermal power control device adapted to be

従来、この種の火力調節装置として、特許文献１により、カム板が所定の回転範囲に回転されたときにクリック感を与えるクリック機構を備えるものが知られている。このもので、クリック機構は、弁筐に対し回り止めした状態でカム板の表面に対向配置され、カム板側に突出する凸部が一部に設けられた板バネと、凸部を受け入れるようにカム板に形成した円弧状の長孔の中間部に切残した当片部とで構成され、カム板が所定の回転範囲に回転されたときに凸部が当片部に当接して乗り上げることでクリック感が与えられるようにしている。また、従来、カム板の押えネジの頭部とカム板との間に皿バネを介設し、この皿バネを軽く圧縮することで、カム板に適度な回転負荷を与えるようにしている。 Conventionally, as this type of thermal power control device, there is known a device provided with a click mechanism that gives a click feeling when a cam plate is rotated within a predetermined rotation range, as disclosed inPatent Document 1. In this click mechanism, the click mechanism is arranged opposite to the surface of the cam plate in a non-rotating state with respect to the valve housing, and includes a plate spring partly provided with a protrusion projecting toward the cam plate, and a plate spring adapted to receive the protrusion. and a contact piece left uncut in the middle of an arc-shaped elongated hole formed in the cam plate, and when the cam plate is rotated within a predetermined rotation range, the convex portion abuts and rides on the contact piece. By doing so, it is possible to give a click feeling. Further, conventionally, a disc spring is interposed between the head of the retaining screw of the cam plate and the cam plate, and the disc spring is lightly compressed to apply an appropriate rotational load to the cam plate.

上記従来例のものでは、カム板をクリック感が与えられる所定の回転範囲を超えて回転させる際、凸部が当片部を乗り越えて、凸部による当片部の押圧が急に解除され、当片部に振動を生ずる。そして、この振動がカム板に伝わることで、カム孔とピンとを介してニードル弁も振動し、ガス量のバラツキを生ずることがある。また、カム板に回転負荷を与えるための皿バネを設ける場合には、部品点数が増す不具合もある。 In the above-described conventional example, when the cam plate is rotated beyond a predetermined rotation range in which a click feeling is given, the convex portion climbs over the contact piece portion, and the pressing force of the contact piece portion by the convex portion is suddenly released. Vibration is generated in the contact piece. When this vibration is transmitted to the cam plate, the needle valve also vibrates via the cam hole and the pin, which may cause variations in the amount of gas. Moreover, when a coned disc spring is provided for applying a rotational load to the cam plate, there is also the problem that the number of parts increases.

特開平５－３０６８１５号公報JP-A-5-306815

本発明は、以上の点に鑑み、カム板をクリック感が与えられる所定の回転範囲を超えて回転させる際のカム板の振動を防止でき、且つ、部品点数を削減してコストダウンも図ることができるようにした火力調節装置を提供することをその課題としている。 In view of the above points, the present invention is capable of preventing the cam plate from vibrating when it is rotated beyond a predetermined rotational range in which a click feeling is given, and reducing the number of parts to reduce the cost. The object is to provide a thermal power control device that allows

上記課題を解決するために、本発明は、バーナへの供給ガス量を可変する、弁筐内に進退自在に設けられたニードル弁と、操作レバーの揺動に連動して回転する、弁筐の外側に設けられたカム板と、ニードル弁に固定され、カム板に形成されたカム孔に係合するピンとを備え、カム板の回転でカム孔とピンとを介してニードル弁が進退し、バーナへの供給ガス量が調節されるようにした火力調節装置であって、カム板が所定の回転範囲に回転されたときにクリック感を与えるクリック機構を備えるものにおいて、カム板の弁筐側を向く面を裏面、この面と反対側の面を表面、カム板の裏面に対向する弁筐又は弁筐に対し固定の部材をカム板対向部材として、クリック機構は、カム板対向部材に設けられた、カム板側に突出する突起と、カム板の表面側に配置された、カム板と一緒に回転する板バネとで構成され、板バネの一部に、カム板側に突出する凸部が設けられ、突起又は凸部がカム板に形成した透孔を通して板バネ又はカム板対向部材に常時圧接し、カム板が前記所定の回転範囲に回転されたときに、凸部が突起に当接して乗り上げることでクリック感が与えられるようにしたことを特徴とする。 In order to solve the above-mentioned problems, the present invention provides a needle valve which is provided in a valve housing to change the amount of gas supplied to a burner, and which is movably provided in a valve housing, and a valve housing which rotates in conjunction with swinging of an operating lever. and a pin fixed to the needle valve and engaged with a cam hole formed in the cam plate. When the cam plate rotates, the needle valve advances and retreats through the cam hole and the pin, A thermal power control device adapted to adjust the amount of gas supplied to a burner, comprising a click mechanism that gives a click feeling when the cam plate is rotated within a predetermined rotation range, wherein the cam plate is on the valve housing side The surface facing toward is the back surface, the surface opposite to this surface is the front surface, and the valve casing facing the back surface of the cam plate or a member fixed to the valve casing is the cam plate facing member, and the click mechanism is provided on the cam plate facing member and a plate spring arranged on the surface side of the cam plate and rotating together with the cam plate. The projection or projection always presses against the plate spring or the cam plate opposing member through the through hole formed in the cam plate, and when the cam plate is rotated within the predetermined rotation range, the projection contacts the projection. It is characterized in that a click feeling is given by abutting and riding on it.

本発明によれば、カム板をクリック感が与えられる所定の回転範囲を超えて回転させる際、凸部が突起を乗り越えて、凸部による突起の押圧が急に解除され、突起の振動を生じても、突起はカム板から分離独立しているため、突起の振動がカム板に伝わることはない。従って、カム板を所定の回転範囲を超えて回転させる際のカム板の振動を防止して、この振動に起因するガス量のバラツキを防止できる。更に、板バネとカム板対向部材とが突起又は凸部を介して常時圧接するため、カム板対向部材に対する板バネの摩擦力でカム板に回転負荷を付与できる。そのため、回転負荷を付与する上記従来例の皿バネを省略でき、部品点数を削減してコストダウンも図ることができる。 According to the present invention, when the cam plate is rotated beyond a predetermined rotation range in which a click feeling is given, the protrusions climb over the protrusions, and the pressing force of the protrusions by the protrusions is suddenly released, causing the protrusions to vibrate. However, since the protrusion is separate and independent from the cam plate, the vibration of the protrusion is not transmitted to the cam plate. Therefore, it is possible to prevent the cam plate from vibrating when the cam plate is rotated beyond a predetermined rotational range, thereby preventing variations in the amount of gas caused by this vibration. Furthermore, since the leaf spring and the cam plate facing member are always pressed against each other via the projection or projection, the frictional force of the leaf spring against the cam plate facing member can apply a rotational load to the cam plate. Therefore, it is possible to omit the coned disc spring of the above-mentioned conventional example that applies a rotational load, and it is possible to reduce the number of parts and reduce the cost.

ところで、火力調節装置では、一般的に、弁筐の外面に、上記ピンが挿通される、ニードル弁の進退方向に長手のガイド孔が形成されたガイド板が固定される。この場合、ガイド板でカム板対向部材を構成して、部品共用化を図ることが望ましい。 By the way, in a thermal power control device, generally, a guide plate is fixed to the outer surface of the valve housing, and the guide plate is formed with a guide hole elongated in the forward/backward direction of the needle valve and through which the pin is inserted. In this case, it is desirable to use the guide plate as a member facing the cam plate so as to share parts.

本発明の実施形態の火力調節装置を具備するバルブユニットの斜視図。1 is a perspective view of a valve unit equipped with a thermal power control device according to an embodiment of the present invention; FIG.図１のバルブユニットの平面図。FIG. 2 is a plan view of the valve unit of FIG. 1;図１のバルブユニットのニードル弁を配置した部分の側面図。FIG. 2 is a side view of the portion where the needle valve of the valve unit of FIG. 1 is arranged;図３のＩＶ－ＩＶ線で切断した切断平面図。FIG. 4 is a cut plan view taken along line IV-IV of FIG. 3;図１のバルブユニットの一部を分解した状態の斜視図。FIG. 2 is a perspective view of a partially disassembled state of the valve unit of FIG. 1;図２のＶＩ－ＶＩ線で切断した拡大断面図。FIG. 3 is an enlarged cross-sectional view taken along line VI-VI of FIG. 2;カム板の回転位置と供給ガス量及びカム板の回転負荷との関係を示すグラフ。5 is a graph showing the relationship between the rotational position of the cam plate, the amount of supplied gas, and the rotational load of the cam plate;

図１、図２に示す本発明の実施形態の火力調節装置Ａは、大容量の主バーナＢａと小容量の副バーナＢｂとを有するコンロバーナＢへの供給ガス量を可変するものである。この火力調節装置Ａは、下部前端に、図示省略したコンロ本体の前面の点消火釦に押されて動く操作部材１１が組付けられたバルブユニット１の上部に設けられている。バルブユニット１の下部には、図示しないが、電磁安全弁とその下流側の開閉弁とが組み込まれており、操作部材１１を後方に押し操作したときに電磁安全弁が強制開弁されると共に開閉弁が開弁されて、コンロバーナＢにガスが供給される。 A thermal power control device A according to an embodiment of the present invention shown in FIGS. 1 and 2 varies the amount of gas supplied to a stove burner B having a large-capacity main burner Ba and a small-capacity auxiliary burner Bb. This heating power adjusting device A is provided at the upper portion of avalve unit 1, in which anoperation member 11 is assembled at the front end of the lower portion thereof and is moved by being pressed by a switch on the front side of the stove main body (not shown). Although not shown, an electromagnetic safety valve and an on-off valve on the downstream side thereof are incorporated in the lower portion of thevalve unit 1. When theoperation member 11 is pushed backward, the electromagnetic safety valve is forcibly opened and the on-off valve is opened and gas is supplied to the stove burner B.

火力調節装置Ａは、バルブユニット１の上部の弁筐２内に、図４に示す如く、前後方向に進退自在に設けられた主バーナＢａ用の第１ニードル弁３_１と副バーナＢｂ用の第２ニードル弁３_２とを備えている。弁筐２には、主バーナＢａに連なる第１ガス出口２１_１と、副バーナＢｂに連なる第２ガス出口２１_２と、第１ガス出口２１_１に第１弁孔２２_１を介して連通する、前後方向に長手で弁筐２の前方（図４で右方）に開口する第１弁室２３_１と、第２ガス出口２１_２に第２弁孔２２_２を介して連通する、前後方向に長手で弁筐２の前方に開口する第２弁室２３_２と、開閉弁を通過したガスを第１弁室２３_１に流入させる第１ガス入口２４_１と、開閉弁を通過したガスを第２弁室２３_２に流入させる第２ガス入口２４_２とが形成されている。そして、第１と第２の各弁室２３_１，２３_２に、第１と第２の各ニードル弁３_１，３_２が前方から摺動自在に挿入されている。As shown in FIG. 4, the thermal power control device A includes afirst needle valve 31 for the main burner Ba and a first needle valve₃₁ for the sub burner Bb. A second needle valve₃₂ is provided. Thevalve housing 2 has a first gas outlet_21-1 connected to the main burner Ba, a second gas outlet_21-2 connected to the sub-burner Bb, and the first gas outlet 21-1 communicated with the first gas outlet_21-1 through a first valve hole_22-1 . , which communicates with a first valve chamber₂₃₁ which is longitudinal in the longitudinal direction and opens to the front (right side in FIG. 4) of thevalve housing 2 and a second gas outlet₂₁₂ through a second valve hole₂₂₂ . A second valve chamber₂₃₂ that is longitudinally open to the front of thevalve housing 2, a first gas inlet₂₄₁ that allows gas that has passed through the on-off valve to flow into the first valve chamber₂₃₁ , and a gas that has passed through the on-off valve. A second gas inlet_{24-2 for flowing into the second valve chamber 23-2}_is formed. First and second needle valves 3₁ and 3₂ are slidably inserted from the front into the first and second valve chambers 23₁ and 23₂ .

第１と第２の各ニードル弁３_１，３_２は、後端部に、第１と第２の各弁孔２２_１，２２_２に嵌合可能なニードル部３_１ａ，３_２ａと、各ニードル部３_１ａ，３_２ａが各弁孔２２_１，２２_２に嵌合した状態でもガスを流すバイパス孔３_１ｂ，３_２ｂとを有している。また、第１弁室２３_１は、後部を小径とした段付き形状に形成されており、第１弁室２３_１の大径部分２３_１ａに第１ガス入口２４_１が設けられている。第１ニードル弁３_１のニードル部３_１ａから若干前方に離れた部分には、第１弁室２３_１の後部の小径部分２３_１ｂに嵌合可能なＯリング３_１ｃが装着されている。そして、Ｏリング３_１ｃが第１弁室２３_１の小径部分２３_１ｂに嵌合している状態では、主バーナＢａにガスが供給されず、第１ニードル弁３_１の前方への移動で、Ｏリング３_１ｃが第１弁室２３_１の小径部分２３_１ｂから大径部分２３_１ａに変位したときに、主バーナＢａへのガス供給が開始されるようにしている。The first and second needle valves 3₁ and 3₂ have needle portions 3₁ a and 3 2 a that can be fitted into the first and second valve holes 22₁ and₂₂₂ at their rear ends. , and bypass holes 3₁ b, 3₂ b through which gas flows even when the needle portions 3₁ a, 3₂ a are fitted in the valve holes 22₁ , 22₂ . The first valve chamber_23-1 is formed in a stepped shape with a small diameter at the rear portion, and a first gas inlet_24-1 is provided in a large-diameter portion_23-1a of the first valve chamber_23-1 . An O-ring 3₁ c that can be fitted into the small diameter portion 23₁ b at the rear of the first valve chamber 23₁ is attached to a portion of the first needle valve 3₁ slightly forward from the needle portion 3₁ a. there is When the O-ring 3₁ c is fitted in the small diameter portion 23₁ b of the first valve chamber 23₁ , gas is not supplied to the main burner Ba, and the first needle valve 3₁ moves forward. When the O-ring 3₁ c is displaced from the small diameter portion 23₁ b of the first valve chamber 23₁ to the large diameter portion 23₁ a, gas supply to the main burner Ba is started.

図１乃至図５を参照して、火力調節装置Ａは、更に、図示省略したコンロ本体の前面前方に突出する操作レバー４の揺動に連動して回転する、弁筐２の外側に設けられたカム板５と、第１と第２の各ニードル弁３_１，３_２に固定され、カム板５に形成された第１と第２の各カム孔５１_１，５１_２に係合する第１と第２の各ピン６_１，６_２とを備えている。カム板５には、弁筐２の上面に突設したボス部２５に外嵌する軸支孔５２が形成されており、ボス部２５を支点にしてカム板５が回転する。また、弁筐２の外面、即ち、上面には、カム板５の下に位置するガイド板７が固定されている。ガイド板７には、第１と第２の各ピン６_１，６_２が挿通される、第１と第２の各ニードル弁３_１，３_２の進退方向たる前後方向に長手の第１と第２の各ガイド孔７１_１，７１_２が形成されている。尚、各ガイド孔７１_１，７１_２は、各ニードル弁３_１，３_２が若干回転しながら前後方向に移動するように、前後方向に対し若干横方向に傾いている。また、操作レバー４は、カム板５に一体に設けられている。Referring to FIGS. 1 to 5, the thermal power control device A is further provided outside thevalve housing 2, which rotates in conjunction with swinging of anoperation lever 4 projecting forward from the front surface of the stove main body (not shown). and acam plate 5 fixed to each of the first and second needle valves 3₁ and 3₂ and engaged with first and second cam holes 51₁ and 51₂ formed in thecam plate 5 . 1 and a second respective pin 6₁ , 6₂ . Thecam plate 5 is formed with ashaft support hole 52 that fits over aboss portion 25 projecting from the upper surface of thevalve housing 2, and thecam plate 5 rotates around theboss portion 25 as a fulcrum. Aguide plate 7 located below thecam plate 5 is fixed to the outer surface of thevalve housing 2, that is, the upper surface. First and second pins 6₁ and 6₂ are inserted through theguide plate 7 , and the first and second needle valves 3₁ and 3_{2 are elongated in the front-rear direction, which is the advancing and retreating direction of the first and second needle valves 3 1 and 3 2} . Second guide holes 71₁ and 71₂ are formed. The guide holes 71₁ and 71₂ are slightly inclined laterally with respect to the front-rear direction so that the needle valves 3₁ and 3₂ move in the front-rear direction while rotating slightly. Further, theoperating lever 4 is provided integrally with thecam plate 5 .

カム板５を図１、図２に示す最小火力位置から同図で反時計回り方向に回転させると、第１カム孔５１_１と第１ピン６_１とを介して第１ニードル弁３_１が図４に示す位置から前方に移動して、主バーナＢａへの供給ガス量が図７のａ線で示す如く変化すると共に、第２カム孔５１_２と第２ピン６_２とを介して第２ニードル弁３_２が図４に示す位置から前方に移動して、副バーナＢｂへの供給ガス量が図７のｂ線で示す如く変化する。When thecam plate 5 is rotated in the counterclockwise_direction from the minimum heating power position shown in_FIGS_._Moving forward from the position shown in FIG. 4, the amount of gas supplied to the main burner Ba changes as indicated by line a in_FIG . The two-needle valve₃₂ moves forward from the position shown in FIG. 4, and the amount of gas supplied to the auxiliary burner Bb changes as shown by line b in FIG.

ここで、カム板５が主バーナＢａへのガス供給が開始される回転位置を含む所定の回転範囲θａでゆっくりと回転されると、主バーナＢａでの逆火を生ずる恐れがある。そのため、カム板５がこの回転範囲θａに回転されたときにクリック感を与えて、この回転範囲θａでカム板５が勢いよく回転されるようにすることが望まれる。 Here, if thecam plate 5 is slowly rotated within a predetermined rotational range θa including the rotational position at which gas supply to the main burner Ba is started, there is a risk of flashback occurring in the main burner Ba. Therefore, it is desirable to give a click feeling when thecam plate 5 is rotated within this rotation range θa so that thecam plate 5 can be vigorously rotated within this rotation range θa.

そこで、本実施形態では、カム板５が上記回転範囲θａに回転されたときにクリック感を与えるクリック機構８を設けている。以下、カム板５の弁筐２側を向く面（下面）を裏面、この面と反対側の面（上面）を表面、カム板５の裏面に対向する弁筐２又は弁筐２に対し固定の部材をカム板対向部材として、クリック機構８について詳述する。クリック機構８は、カム板対向部材に設けられた、カム板５側、即ち、上側に突出する突起８１と、カム板５の表面側に配置された板バネ８２とで構成されている。尚、本実施形態では、ガイド板７でカム板対向部材が構成され、突起８１はガイド板７に形成されている。板バネ８２には、弁筐２の上面の上記ボス部２５にカム板５の軸支孔５２と共に外嵌する軸支孔８２１が形成されている。そして、ボス部２５に螺着する押えネジ８３で板バネ８２を上方から押えている。突起８１は、図６に示す如く、カム板５に形成した透孔５３を通して板バネ８２の先端部８２２に下方から常時圧接している。更に、板バネ８２には、カム板５に形成した係止孔５４と切欠き５５に係合する爪部８２３，８２４が設けられており、板バネ８２がカム板５と一緒に回転する。 Therefore, in the present embodiment, aclick mechanism 8 is provided to give a click feeling when thecam plate 5 is rotated within the rotation range θa. Hereinafter, the surface (lower surface) of thecam plate 5 facing thevalve housing 2 side is the rear surface, the surface opposite to this surface (upper surface) is the front surface, and thecam plate 5 is fixed to thevalve housing 2 facing the rear surface or to thevalve housing 2. Theclick mechanism 8 will be described in detail with the member of . Theclick mechanism 8 is composed of aprotrusion 81 provided on the cam plate facing member and protruding toward thecam plate 5 side, that is, upward, and aplate spring 82 arranged on the surface side of thecam plate 5 . In this embodiment, theguide plate 7 constitutes a cam plate facing member, and theprojection 81 is formed on theguide plate 7 . Theleaf spring 82 is formed with ashaft support hole 821 that fits together with theshaft support hole 52 of thecam plate 5 in theboss portion 25 on the upper surface of thevalve housing 2 . Apressing screw 83 screwed onto theboss portion 25 presses theplate spring 82 from above. As shown in FIG. 6, theprojection 81 is always in pressure contact with thedistal end portion 822 of theleaf spring 82 through the throughhole 53 formed in thecam plate 5 from below. Further, theleaf spring 82 is provided withclaw portions 823 and 824 that engage with thelocking hole 54 and thenotch 55 formed in thecam plate 5 , so that theleaf spring 82 rotates together with thecam plate 5 .

また、板バネ８２の一部、即ち、先端部８２２の周方向中央部には、カム板５側、即ち、下側に突出する凸部８２５が設けられている。そして、カム板５が上記回転範囲θａに回転されたときに、凸部８２５が突起８１に当接して乗り上げることで、カム板５の回転負荷が図７のｃ線で示すように増加してクリック感が与えられるようにしている。そのため、カム板５の上記回転範囲θａでは、増加した回転負荷に抗するように操作レバー４に加える力を強くすることになり、カム板５が勢いよく回転されて、主バーナＢａでの逆火を防止することができる。 A part of theplate spring 82, that is, the central portion in the circumferential direction of thetip portion 822, is provided with aconvex portion 825 that protrudes toward thecam plate 5, that is, downward. When thecam plate 5 is rotated within the rotation range θa, theprojection 825 contacts and rides on theprojection 81, increasing the rotation load of thecam plate 5 as indicated by line c in FIG. A click feeling is given. Therefore, in the rotation range θa of thecam plate 5, the force applied to theoperation lever 4 is increased to resist the increased rotational load, and thecam plate 5 is vigorously rotated, causing the reverse rotation of the main burner Ba. Fire can be prevented.

ここで、カム板５をクリック感が与えられる上記回転範囲θａを超えて回転させる際、凸部８２５が突起８１を乗り越えて、凸部８２５による突起８１の押圧が急に解除され、突起８１の振動を生じ勝ちである。然し、突起８１の振動を生じても、突起８１はカム板５から分離独立しているため、突起８１の振動がカム板５に伝わることはない。従って、カム板５を上記回転範囲θａを超えて回転させる際のカム板５の振動を防止して、この振動に起因するガス量のバラツキを防止できる。 Here, when thecam plate 5 is rotated beyond the rotation range θa in which the click feeling is given, theprojection 825 climbs over theprojection 81, and theprojection 81 is suddenly released from being pressed by theprojection 825, and theprojection 81 is released. It tends to generate vibration. However, even if theprotrusion 81 vibrates, the vibration of theprotrusion 81 will not be transmitted to thecam plate 5 because theprotrusion 81 is separate and independent from thecam plate 5 . Therefore, vibration of thecam plate 5 when thecam plate 5 is rotated beyond the rotation range .theta.a can be prevented, and variations in the amount of gas caused by the vibration can be prevented.

更に、カム板５と一緒に回転する板バネ８２とカム板対向部材であるガイド板７に設けた突起８１とが常時圧接するため、突起８１に対する板バネ８２の摩擦力でカム板５に回転負荷を付与できる。また、本実施形態では、板バネ８２の先端部８２２の突起８１による押し上げに伴い板バネ８２の軸支孔８２１の周辺部分に押えネジ８３を支点にして作用する下方への押圧力でカム板５の軸支孔５２の周辺部分がボス部２５の周囲の弁筐部分に押し付けられるため、弁筐２に対するカム板５の摩擦力によってもカム板５に回転負荷が付与される。従って、回転負荷を付与する上記従来例の皿バネを省略でき、部品点数を削減してコストダウンを図ることができる。また、突起８１をガイド板７に形成することで、部品を共用化でき、一層のコストダウンを図ることができる。 Further, since theplate spring 82 rotating together with thecam plate 5 and theprojection 81 provided on theguide plate 7 which is a member facing the cam plate are always pressed against each other, thecam plate 5 rotates due to the frictional force of theplate spring 82 against theprojection 81. load can be applied. Further, in the present embodiment, as thetip 822 of theleaf spring 82 is pushed up by theprotrusion 81, the cam plate is moved by a downward pressing force acting on the periphery of theshaft support hole 821 of theleaf spring 82 with the holdingscrew 83 as a fulcrum. 5 is pressed against the valve casing surrounding theboss 25 , the frictional force of thecam plate 5 with respect to thevalve casing 2 also applies a rotational load to thecam plate 5 . Therefore, it is possible to omit the coned disc spring of the above-mentioned conventional example that applies a rotational load, and it is possible to reduce the number of parts and reduce the cost. In addition, by forming theprojection 81 on theguide plate 7, parts can be shared, and the cost can be further reduced.

ところで、弁筐２に、上記第１と第２の各ガイド孔７１_１，７１_２に相当するガイド孔を形成して、ガイド板７を省略し、弁筐２自体でカム板対向部材を構成して、弁筐２に一体に突起８１を形成することも可能である。然し、弁筐２は、一般的に、アルミダイキャスト製とするため、これにガイド孔や突起８１を形成したのでは、耐久性を確保することが困難になる。従って、上記実施形態の如くガイド板７を設けて、ガイド板７でカム板対向部材を構成し、ガイド板７に突起８１を形成することが望ましい。By the way, guide holes corresponding to the first and second guide holes 71₁ and 71₂ are formed in thevalve housing 2, theguide plate 7 is omitted, and thevalve housing 2 itself constitutes a cam plate opposing member. It is also possible to form theprotrusion 81 integrally with thevalve housing 2 by doing so. However, since thevalve housing 2 is generally made of die-cast aluminum, it is difficult to ensure durability if the guide holes andprojections 81 are formed in this. Therefore, it is desirable to provide theguide plate 7 as in the above-described embodiment, configure theguide plate 7 as a member opposed to the cam plate, and form theprojection 81 on theguide plate 7 .

また、上記実施形態では、図３に示す如く、ガイド板７が、弁筐２の第１と第２の各弁室２３_１，２３_２を形成した前部の上面から浮いており、また、カム板５もガイド板７の上面から浮いている。そこで、弁筐２の前端上面に、ガイド板７の下面に当接する突起部２６を突設し、板バネ８２から突起８１に作用する下方への押圧力でガイド板７が下方に撓むことを防止できるようにし、更に、ガイド板７の前端にカム板５の前端部下面に当接する突起部７２を設けて、操作レバー４を操作する際に、操作レバー４が下方に傾くことを防止できるようにしている。Further, in the above embodiment, as shown in FIG. 3, theguide plate 7 is floating from the upper surface of the front portion of thevalve housing 2 where the first and second valve chambers 23₁ and 23₂ are formed. Thecam plate 5 is also floating from the upper surface of theguide plate 7. Therefore, a projectingportion 26 is provided on the upper surface of the front end of thevalve housing 2 to contact the lower surface of theguide plate 7, and theguide plate 7 is bent downward by the downward pressing force acting on theprojection 81 from theplate spring 82. Further, aprojection 72 is provided at the front end of theguide plate 7 to contact the lower surface of the front end portion of thecam plate 5 to prevent theoperation lever 4 from tilting downward when theoperation lever 4 is operated. I am making it possible.

以上、本発明の実施形態について図面を参照して説明したが、本発明はこれに限定されない。例えば、上記実施形態では、カム板対向部材（ガイド板７）に設けた突起８１がカム板５に形成した透孔５３を通して板バネ８２に常時圧接しているが、突起８１をカム板５の表面に達しないように形成し、板バネ８２に設ける凸部８２５を大きくして、凸部８２５がカム板５に形成した透孔５３を通してカム板対向部材に常時圧接するようにしてもよい。この場合も、カム板５が所定の回転範囲θａに回転されたときに、凸部８２５が突起８１に当接して乗り上げることでクリック感が与えられるようにする。 Although the embodiments of the present invention have been described above with reference to the drawings, the present invention is not limited thereto. For example, in the above-described embodiment, theprotrusion 81 provided on the cam plate opposing member (guide plate 7) is always in pressure contact with theleaf spring 82 through the throughhole 53 formed in thecam plate 5. Theconvex portion 825 provided on theleaf spring 82 may be formed so as not to reach the surface, and theconvex portion 825 provided on theleaf spring 82 may be enlarged so that theconvex portion 825 always presses the cam plate opposing member through the throughhole 53 formed in thecam plate 5 . In this case as well, when thecam plate 5 is rotated within the predetermined rotation range θa, theprojection 825 abuts on and rides on theprojection 81 to give a click feeling.

また、上記実施形態の火力調節装置Ａは、第１と第２の一対のニードル弁３_１，３_２を備えているが、単一のニードル弁を備える火力調節装置にも同様に本発明を適用できる。更に、上記実施形態では、カム板５に操作レバー４が一体に形成されているが、カム板５を操作レバー４と別体とし、操作レバー４の揺動で適宜の連動機構を介してカム板５が回転するようにしてもよい。In addition, although the thermal power control device A of the above embodiment has a pair of first and second needle valves 3₁ and 3₂ , the present invention can also be applied to a thermal power control device having a single needle valve. Applicable. Furthermore, in the above-described embodiment, thecam plate 5 and the operatinglever 4 are formed integrally with each other. Theplate 5 may rotate.

Ａ…火力調節装置、Ｂ…コンロバーナ（バーナ）、２…弁筐、３_１，３_２…ニードル弁、４…操作レバー、５…カム板、５１_１，５１_２…カム孔、５３…透孔、６_１，６_２…ピン、７…ガイド板、７１_１，７１_２…ガイド孔、８…クリック機構、８１…突起、８２…板バネ、８２５…凸部。A... Thermal control device, B... Stove burner (burner), 2... Valve housing,₃₁ ,₃₂ ... Needle valve, 4... Operation lever, 5... Cam plate,₅₁₁ ,₅₁₂ ... Cam hole, 53... Transparent Holes 6₁ , 6₂ : Pin 7: Guide plate 71₁ , 71₂ : Guide hole 8: Click mechanism 81: Projection 82: Leaf spring 825: Protrusion.

Claims

Translated fromJapanese

バーナへの供給ガス量を可変する、弁筐内に進退自在に設けられたニードル弁と、操作レバーの揺動に連動して回転する、弁筐の外側に設けられたカム板と、ニードル弁に固定され、カム板に形成されたカム孔に係合するピンとを備え、カム板の回転でカム孔とピンとを介してニードル弁が進退し、バーナへの供給ガス量が調節されるようにした火力調節装置であって、カム板が所定の回転範囲に回転されたときにクリック感を与えるクリック機構を備えるものにおいて、
カム板の弁筐側を向く面を裏面、この面と反対側の面を表面、カム板の裏面に対向する弁筐又は弁筐に対し固定の部材をカム板対向部材として、クリック機構は、カム板対向部材に設けられた、カム板側に突出する突起と、カム板の表面側に配置された、カム板と一緒に回転する板バネとで構成され、板バネの一部に、カム板側に突出する凸部が設けられ、突起又は凸部がカム板に形成した透孔を通して板バネ又はカム板対向部材に常時圧接し、カム板が前記所定の回転範囲に回転されたときに、凸部が突起に当接して乗り上げることでクリック感が与えられるようにしたことを特徴とする火力調節装置。A needle valve that is movable back and forth within a valve housing for varying the amount of gas supplied to the burner, a cam plate that is provided outside the valve housing and rotates in conjunction with swinging of an operating lever, and a needle valve. and a pin that engages a cam hole formed in the cam plate. When the cam plate rotates, the needle valve advances and retreats through the cam hole and the pin to adjust the amount of gas supplied to the burner. A thermal power control device equipped with a click mechanism that gives a click feeling when the cam plate is rotated within a predetermined rotation range,
The surface of the cam plate facing the valve casing side is the back surface, the surface opposite to this surface is the front surface, and the valve casing facing the back surface of the cam plate or a member fixed to the valve casing is the cam plate facing member, and the click mechanism is: It consists of a projection provided on the cam plate opposing member and protruding toward the cam plate, and a plate spring arranged on the surface side of the cam plate and rotating together with the cam plate. A protrusion projecting toward the plate side is provided, and the protrusion or the protrusion constantly presses the leaf spring or the cam plate opposing member through the through hole formed in the cam plate, and when the cam plate is rotated within the predetermined rotation range. 1. A thermal power control device characterized in that a click feeling is imparted by a projection contacting and riding on a projection.

請求項１記載の火力調節装置であって、前記弁筐の外面に、前記ピンが挿通される、前記ニードル弁の進退方向に長手のガイド孔が形成されたガイド板が固定されるものにおいて、ガイド板で前記カム板対向部材が構成されることを特徴とする火力調節装置。 2. The thermal power control device according to claim 1, wherein a guide plate is fixed to the outer surface of the valve housing, the guide plate having a guide hole elongated in the advance and retreat direction of the needle valve through which the pin is inserted, A thermal power adjusting device, wherein the cam plate opposing member is composed of a guide plate.