JP2002276847A - Cap for opening and closing valve - Google Patents
Cap for opening and closing valveInfo
- Publication number
- JP2002276847A JP2002276847A JP2001077078A JP2001077078A JP2002276847A JP 2002276847 A JP2002276847 A JP 2002276847A JP 2001077078 A JP2001077078 A JP 2001077078A JP 2001077078 A JP2001077078 A JP 2001077078A JP 2002276847 A JP2002276847 A JP 2002276847A
- Authority
- JP
- Japan
- Prior art keywords
- opening
- circumferential surface
- valve
- closing
- ball
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Mechanically-Actuated Valves (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は，弁の開閉軸に装着
される開閉用キャップに関し，詳しくは，バタフライ弁
やボール弁，仕切弁等の弁の開閉軸（弁棒）に回転トル
クを伝えるための開閉用キャップに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an opening / closing cap mounted on an opening / closing shaft of a valve, and more particularly, to transmitting rotational torque to an opening / closing shaft (valve rod) of a valve such as a butterfly valve, a ball valve, or a gate valve. For opening and closing caps.
【０００２】[0002]
【従来の技術】例えば地中に埋設された水道管には，流
量調整などのためにバタフライ弁，ボール弁，仕切弁な
どといった弁が適当な箇所に設けられている。それらの
弁を開閉する場合，地面に設けられたマンホールをあ
け，Ｔレンチなどの開栓器やハンドルを用いて，弁の開
閉軸を回転させている。2. Description of the Related Art For example, a water pipe buried underground is provided with a valve such as a butterfly valve, a ball valve, a gate valve, or the like at an appropriate position for flow rate adjustment or the like. When these valves are opened and closed, a manhole provided on the ground is opened, and an opening and closing shaft of the valve is rotated using an opener such as a T wrench or a handle.
【０００３】一般に弁の開閉軸は，開閉を軽い力で行え
るように形成されており，弁体が所定の開き位置や閉じ
位置に至った後にも開栓器やハンドルを回し続けると，
開閉軸や弁体を止めるストッパーなどに過大な力が作用
し，それらを損傷させる心配がある。特に，減速機を介
して弁体を開閉するものでは，開閉軸や弁体に大きな回
転トルクが作用するので，損傷させやすい。[0003] In general, the opening and closing shaft of a valve is formed so that opening and closing can be performed with a light force. If the opening device or the handle is continuously rotated even after the valve body reaches a predetermined open position or closed position,
Excessive force acts on the opening / closing shaft and the stopper that stops the valve body, and there is a concern that they may be damaged. In particular, when the valve body is opened and closed via a reduction gear, a large rotational torque acts on the opening / closing shaft and the valve body, so that the valve body is easily damaged.
【０００４】そこで従来より，このような問題を解消す
べく，スリップ機構などを介して弁の開閉軸を開閉させ
ることが行われている。スリップ機構を用いれば，過大
な回転トルクが加わった際に，適宜スリップさせること
ができるので，開閉軸や弁体に大きな力を作用させるこ
とを回避でき，それらの損傷を防止できる。Therefore, conventionally, in order to solve such a problem, the opening and closing shaft of the valve is opened and closed via a slip mechanism or the like. If a slip mechanism is used, when an excessive rotation torque is applied, the slip can be appropriately made, so that it is possible to avoid applying a large force to the opening / closing shaft and the valve body, and to prevent them from being damaged.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら，マンホ
ールから差し込んだＴレンチなどを用いて，地中の弁を
開閉させる場合，地中の様子が見えない状態で作業をし
なければならない。そのため，手の感触だけではスリッ
プ機構がスリップをしているのかどうかが分からない場
合がある。かかる場合，弁の状態が把握できなくなり，
円滑な開閉操作ができなくなってしまう。However, when an underground valve is opened and closed using a T wrench or the like inserted from a manhole, the operation must be performed in a state where the state of the underground cannot be seen. For this reason, it may not be possible to determine whether or not the slip mechanism is slipping based only on the feel of the hand. In such a case, the state of the valve cannot be grasped,
Smooth opening and closing operations cannot be performed.
【０００６】したがって本発明の目的は，スリップさせ
ることによって開閉軸や弁体に過大な力が加わることを
回避でき，しかも，見えなくてもスリップしていること
が確認できる弁の開閉用キャップを提供することにあ
る。Accordingly, an object of the present invention is to provide a valve opening / closing cap which can prevent an excessive force from being applied to an opening / closing shaft or a valve body by slipping, and which can confirm slipping even if it is not visible. To provide.
【０００７】[0007]
【課題を解決するための手段】この目的を達成するため
に，本発明にあっては，弁の開閉軸に装着されて，開閉
軸に回転トルクを伝えるための開閉用キャップであっ
て，開閉軸と一体的に回転するように取り付けられる第
１部材と，第１部材に対して相対的に回転可能に取り付
けられる第２部材を有し，かつ，第１部材と第２部材を
所定のトルクまで伝達可能に接続し，第１部材と第２部
材の間に移動部材を介在させ，第１部材と第２部材の一
方に移動部材を抜け出し可能に受け入れさせる凹部を設
け，第１部材と第２部材の他方に移動部材を一体的に回
転させるガイドを設け，第１部材と第２部材の一方に設
けられた凹部に移動部材を受け入れた状態に付勢する付
勢手段を設けてなることを特徴としている。According to the present invention, there is provided an opening / closing cap mounted on an opening / closing shaft of a valve for transmitting a rotational torque to the opening / closing shaft. A first member attached so as to rotate integrally with the shaft, a second member attached rotatably relative to the first member, and the first member and the second member are provided with a predetermined torque; The first member and the second member are provided with a concave portion for receiving the movable member so that the movable member can escape from the first member and the second member. A guide for integrally rotating the movable member is provided on the other of the two members, and a biasing means for biasing the movable member to a received state is provided in a concave portion provided on one of the first member and the second member. It is characterized by.
【０００８】この開閉用キャップにあっては，所定のト
ルクまでは第１部材と第２部材が一体的に回転し，両者
の間でトルクが伝達される。一方，所定のトルクを越え
た場合は，第１部材と第２部材が相対的に回転する。こ
れに伴って，第１部材と第２部材の一方に設けられた凹
部と，第１部材と第２部材の他方に設けられたガイドが
相対的に移動し，凹部に対して移動部材も相対的に移動
することとなる。そして，この移動に伴い，付勢手段の
付勢に抗して移動部材が凹部から抜け出したり，付勢手
段の付勢によって移動部材が凹部内に入り込んだりする
こととなる。こうして，移動部材が凹部に出入りする毎
に振動や音を発生させる。In this opening / closing cap, the first member and the second member rotate integrally up to a predetermined torque, and the torque is transmitted between the two. On the other hand, when the torque exceeds a predetermined value, the first member and the second member rotate relatively. Accordingly, the concave portion provided on one of the first member and the second member and the guide provided on the other of the first member and the second member relatively move, and the moving member also moves relative to the concave portion. Will move. With this movement, the moving member comes out of the concave portion against the urging of the urging means, and the moving member enters the concave portion by the urging of the urging means. Thus, vibration and sound are generated each time the moving member enters and exits the recess.
【０００９】この開閉用キャップにおいて，例えば，第
１部材と第２部材の一方に弁の開閉軸と同軸に配置され
た円周面が形成され，他方にこの円周面に対向する内円
周面が形成されている。その場合，第１部材と第２部材
の一方に形成された円周面と他方に形成された内円周面
の間に，所定のトルクまで伝達可能なトレランスリング
が介在している構成であっても良い。また，第１部材と
第２部材の間に介在する移動部材は，例えばボールであ
る。In this opening / closing cap, for example, one of the first member and the second member has a circumferential surface formed coaxially with the opening / closing axis of the valve, and the other has an inner circumferential surface facing the circumferential surface. A surface is formed. In this case, a tolerance ring capable of transmitting up to a predetermined torque is interposed between a circumferential surface formed on one of the first member and the second member and an inner circumferential surface formed on the other. May be. The moving member interposed between the first member and the second member is, for example, a ball.
【００１０】[0010]
【発明の実施の形態】以下，本発明の好ましい実施の形
態を図面を参照にして説明する。図１は，本発明の実施
の形態にかかる開閉用キャップＣの構造を示す縦断面図
である。この開閉用キャップＣは，後述するように，弁
Ｖの開閉軸５２と一体的に回転するように取り付けられ
る第１部材１と，この第１部材１に対して相対的に回転
可能に取り付けられる第２部材２を有している。Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a longitudinal sectional view showing a structure of an opening / closing cap C according to an embodiment of the present invention. As will be described later, the opening / closing cap C is attached to the first member 1 which is attached to rotate integrally with the opening / closing shaft 52 of the valve V, and is attached to the first member 1 so as to be relatively rotatable. It has a second member 2.
【００１１】図２は，第１部材１の斜視図である。第１
部材１は，全体として略円筒形状をなしており，上段に
は，直径の細い摩擦円周面１０が形成され，中段には，
摩擦円周面１０よりも直径の太い抜け防止円周面１１が
形成され，下段には，抜け防止円周面１１よりも更に直
径の太いシール円周面１２が形成されている。抜け防止
円周面１１の周面には，環状の溝１３が設けられてい
る。また，シール円周面１２の周面にも，環状の溝１４
が設けられている。FIG. 2 is a perspective view of the first member 1. First
The member 1 has a substantially cylindrical shape as a whole, a friction circumferential surface 10 having a small diameter is formed in an upper stage, and
A slip-preventing circumferential surface 11 having a diameter larger than the friction circumferential surface 10 is formed, and a seal circumferential surface 12 having a larger diameter than the slip-preventing circumferential surface 11 is formed at a lower stage. An annular groove 13 is provided on the peripheral surface of the come-off prevention circumferential surface 11. The annular groove 14 is also provided on the peripheral surface of the seal circumferential surface 12.
Is provided.
【００１２】第１部材１の上端面には，円形状の凹部１
５が４箇所に設けられている。これら４つの凹部１５
は，円形状をなす第１部材１の上端面において，中心か
らいずれも等しい距離となるように円周上に配置されて
いる。また，各凹部１５の入口角部（各凹部１５の上端
角部）は，いずれもテーパー面１６に形成されている。A circular concave portion 1 is formed on an upper end surface of the first member 1.
5 are provided at four places. These four recesses 15
Are arranged on the circumference of the upper end surface of the first member 1 having a circular shape so as to be equally spaced from the center. In addition, the entrance corners of each recess 15 (upper corners of each recess 15) are all formed on the tapered surface 16.
【００１３】第１部材１の下端面の中心には，後述する
弁Ｖの開閉軸５２を受容可能な孔１７が形成されてい
る。この孔１７は，後述する弁Ｖの開閉軸５２と係合す
るように，角柱形状に構成されており，また開閉軸５２
を挿入しやすいように，下に向かって広がるテーパー形
状に形成されている。また，シール円周面１２の周面に
は，この孔１７に向かって貫通するネジ孔１８が形成さ
れている。In the center of the lower end surface of the first member 1, there is formed a hole 17 capable of receiving an opening / closing shaft 52 of a valve V described later. The hole 17 is formed in a prismatic shape so as to engage with an opening / closing shaft 52 of a valve V described later.
Is formed in a tapered shape spreading downward. A screw hole 18 penetrating toward the hole 17 is formed in the peripheral surface of the seal circumferential surface 12.
【００１４】図３は，第２部材２を切断して示した斜視
図である。第２部材２は，全体として略釣り鐘形状をな
しており，第２部材２の下面にて開口するように形成さ
れた空洞部２０の上段には，直径（内径）の細い摩擦内
円周面２１が形成され，中段には，摩擦内円周面２１よ
りも直径（内径）の太い抜け防止内円周面２２が形成さ
れ，下段には，抜け防止内円周面２２よりも更に直径
（内径）の太いシール内円周面２３が形成されている。
摩擦内円周面２１の直径は，後述するトレランスリング
３０を装着した第１部材１の摩擦円周面１０を挿入でき
るように，第１部材１の摩擦円周面１０の直径よりも大
きく設定されている。抜け防止内円周面２２の直径は，
第１部材１の抜け防止円周面１１の直径と等しいか，そ
れより僅かに大きく形成されている。また，シール内円
周面２３の直径は，第１部材１のシール円周面１２の直
径と等しいか，それより僅かに大きく形成されている。FIG. 3 is a perspective view of the second member 2 cut away. The second member 2 has a substantially bell-shaped shape as a whole, and a friction inner circumferential surface having a small diameter (inner diameter) is provided on an upper stage of the hollow portion 20 formed so as to open at the lower surface of the second member 2. 21 is formed, and in the middle, a slip-preventing inner circumferential surface 22 having a diameter (inner diameter) larger than the friction inner circumferential surface 21 is formed. A seal inner circumferential surface 23 having a large inner diameter is formed.
The diameter of the friction inner circumferential surface 21 is set to be larger than the diameter of the friction circumferential surface 10 of the first member 1 so that the friction circumferential surface 10 of the first member 1 to which the tolerance ring 30 described later is attached can be inserted. Have been. The diameter of the inner circumferential surface 22 for preventing slip-off is
The diameter of the circumferential surface 11 of the first member 1 is equal to or slightly larger than the diameter of the circumferential surface 11. The diameter of the seal inner circumferential surface 23 is equal to or slightly larger than the diameter of the seal circumferential surface 12 of the first member 1.
【００１５】抜け防止内円周面２２には，環状の溝２４
が設けられている。また，抜け防止内円周面２２とシー
ル内円周面２３の間には，抜け防止内円周面２２からシ
ール内円周面２３に向かって直径が徐々に広がるように
テーパー面２５が形成されている。An annular groove 24 is formed on the inner circumferential surface
Is provided. Further, a tapered surface 25 is formed between the slip-preventing inner circumferential surface 22 and the seal inner circumferential surface 23 so that the diameter gradually increases from the slip-preventing inner circumferential surface 22 to the seal inner circumferential surface 23. Have been.
【００１６】空洞部２０の天井面には，後述するガイド
３５とバネ４６を収納するための収納部２６が形成され
ている。更に，この収納部２６には，後述するガイド３
５を第２部材２に取り付ける際にピン３８を挿入するた
めの孔２７が形成されている。また，第２部材２の上部
には，後述するハンドルＨを係合させるための突起２８
が形成されている。On the ceiling surface of the hollow portion 20, a storage portion 26 for storing a guide 35 and a spring 46 described later is formed. Further, a guide 3 to be described later is provided in the storage section 26.
The hole 27 for inserting the pin 38 when the 5 is attached to the second member 2 is formed. A projection 28 for engaging a handle H described later is provided on the upper part of the second member 2.
Are formed.
【００１７】図１に示すように，第１部材１と第２部材
２を組合せた際には，第１部材１の摩擦円周面１０と第
２部材２の摩擦内円周面２１の間に，トレランスリング
３０が介在している。このトレランスリング３０は，図
４に示すように，一部に切り欠き３１を有する円筒形状
をなしている。トレランスリング３０全体は，鋼板など
の弾性材料で構成され，その弾性力によって，第１部材
１の摩擦円周面１０に密着させて取り付けることができ
る。トレランスリング３０の外面には，突起３２が適当
な間隔で設けられており，第１部材１の摩擦円周面１０
と第２部材２の摩擦内円周面２１の間に介在させた際に
は，この突起３２が両者の間で突っ張ることにより，第
１部材１の摩擦円周面１０と第２部材２の摩擦内円周面
２１の間に摩擦力を発生させる。As shown in FIG. 1, when the first member 1 and the second member 2 are combined, the distance between the friction circumferential surface 10 of the first member 1 and the friction inner circumferential surface 21 of the second member 2 is increased. , A tolerance ring 30 is interposed. As shown in FIG. 4, the tolerance ring 30 has a cylindrical shape having a cutout 31 in a part thereof. The entire tolerance ring 30 is made of an elastic material such as a steel plate, and can be attached to the friction circumferential surface 10 of the first member 1 by its elastic force. Protrusions 32 are provided on the outer surface of the tolerance ring 30 at appropriate intervals.
When interposed between the friction inner circumferential surface 21 of the second member 2 and the projection 32, the protrusion 32 stretches between the two, so that the friction circumferential surface 10 of the first member 1 and the second member 2 A friction force is generated between the friction inner circumferential surfaces 21.
【００１８】第２部材２において空洞部２０天井面の収
納部２６に収納されるガイド３５は，図５に示すよう
に，円盤形状をなすフランジ３６と，このフランジ３６
の上面中央に形成された円柱形状の支柱３７を備えてい
る。支柱３７の上面には，ガイド３５を第２部材２に取
り付ける際にピン３８を挿入するための孔３９が形成さ
れている。As shown in FIG. 5, the guide 35 accommodated in the accommodating portion 26 on the ceiling surface of the hollow portion 20 in the second member 2 has a disc-shaped flange 36 and a
Is provided at the center of the upper surface of the column. A hole 39 for inserting a pin 38 when attaching the guide 35 to the second member 2 is formed on the upper surface of the support 37.
【００１９】フランジ３６には，円形状の貫通孔４０が
４箇所に設けられている。これら４つの貫通孔４０は，
先に図２において説明した第１部材１の上端面に形成さ
れた４つの凹部１５に対応して，円盤形状をなすフラン
ジ３６において，中心からいずれも等しい距離となるよ
うに円周上に配置されている。The flange 36 is provided with four circular through holes 40. These four through holes 40
Corresponding to the four recesses 15 formed on the upper end surface of the first member 1 described above with reference to FIG. 2, the disk-shaped flanges 36 are arranged on the circumference so as to be all at the same distance from the center. Have been.
【００２０】後述するように，第１部材１と第２部材２
を組合せる際には，これら貫通孔４０に，移動部材とし
てのボール４１がそれぞれ挿入される。各貫通孔４０の
直径（内径）は，ボール４１の直径よりも大きく設定さ
れており，これにより，各貫通孔４０内にボール４１を
余裕を持って保持できるようになっている。As will be described later, the first member 1 and the second member 2
When these are combined, balls 41 as moving members are inserted into these through holes 40, respectively. The diameter (inner diameter) of each through hole 40 is set to be larger than the diameter of the ball 41, so that the ball 41 can be held in each through hole 40 with a margin.
【００２１】さて，これら第１部材１，第２部材２，ガ
イド３５等によって開閉用キャップＣを製作する場合，
第１部材１において，摩擦円周面１０の周囲にトレラン
スリング３０を装着する。また，抜け防止円周面１１に
形成された溝１３にＣワッシャーからなる係合部材４２
を装着し，シール円周面１２に形成された溝１４にＯリ
ングからなる封止部材４３を装着する。When the opening / closing cap C is manufactured by using the first member 1, the second member 2, the guide 35, and the like,
In the first member 1, a tolerance ring 30 is mounted around the friction circumferential surface 10. Further, an engaging member 42 made of a C washer is inserted into the groove 13 formed on the
Is mounted, and a sealing member 43 made of an O-ring is mounted in the groove 14 formed in the seal circumferential surface 12.
【００２２】一方，第２部材２においては，収納部２６
にガイド３５を収納させるが，この時，収納部２６の天
井に形成されている孔２７とガイド３５の上面に形成さ
れている孔３９にピン３８を挿入し，第２部材２とガイ
ド３５が一体的に回転するようにする。また，このよう
にして第２部材２の収納部２６にガイド３５を取り付け
る場合，ガイド３５の支柱３７の周囲にドーナツ形状の
ワッシャー４５と付勢手段としての皿バネ４６を装着し
ておくことにより，収納部２６の天井面とフランジ３６
の上面との間に皿バネ４６とワッシャー４５を介在さ
せ，ガイド３５のフランジ３６に形成された各貫通孔４
０に向かって下向きの押圧力を発生させる。On the other hand, in the second member 2,
At this time, the pin 38 is inserted into the hole 27 formed on the ceiling of the storage part 26 and the hole 39 formed on the upper surface of the guide 35, and the second member 2 and the guide 35 are inserted. So that they rotate together. When the guide 35 is attached to the storage section 26 of the second member 2 in this manner, a donut-shaped washer 45 and a disc spring 46 as urging means are mounted around the column 37 of the guide 35. , The ceiling surface of the storage section 26 and the flange 36
A disc spring 46 and a washer 45 are interposed between the upper surface and the through hole 4 formed in the flange 36 of the guide 35.
A downward pressing force is generated toward zero.
【００２３】そして，図１に示すように，ガイド３５の
フランジ３６に形成された各貫通孔４０にボール４１を
それぞれ保持させた状態で，第２部材２に形成された空
洞部２０内に第１部材１の上端から挿入する。この場
合，第１部材１と第２部材２の中心軸を一致させるよう
にすれば，挿入がスムーズになる。また，このように第
２部材２の空洞部２０に第１部材１を挿入する場合，ガ
イド３５の各貫通孔４０に保持されている各ボール４１
に，第１部材１の上端面に形成された４つの凹部１５を
それぞれ一致させるようにすると良い。Then, as shown in FIG. 1, the ball 41 is held in each through hole 40 formed in the flange 36 of the guide 35, and the ball 41 is inserted into the hollow portion 20 formed in the second member 2. One member 1 is inserted from the upper end. In this case, if the central axes of the first member 1 and the second member 2 are matched, the insertion becomes smooth. When the first member 1 is inserted into the hollow portion 20 of the second member 2 in this manner, each ball 41 held in each through hole 40 of the guide 35
Then, it is preferable that the four concave portions 15 formed on the upper end surface of the first member 1 are made to coincide with each other.
【００２４】こうして第２部材２の空洞部２０に第１部
材１を挿入していく途中においては，抜け防止円周面１
１の溝１３に装着された係合部材４２は，第２部材２の
抜け防止内円周面２２とシール内円周面２３の間に形成
されたテーパー面２５によって徐々に縮められていく。
そして，抜け防止内円周面２２の内周面に形成された溝
２４が抜け防止円周面１１の溝１３に一致する位置ま
で，第２部材２の空洞部２０に第１部材１が挿入される
と，係合部材４２が抜け防止内円周面２２の溝２４内に
広がることにより，第２部材２の空洞部２０内から第１
部材１が抜け落ちない状態となり，開閉用キャップＣが
組み立てられる。During the insertion of the first member 1 into the cavity 20 of the second member 2 as described above, the slip-off preventing circumferential surface 1
The engagement member 42 mounted in the first groove 13 is gradually contracted by the tapered surface 25 formed between the inner circumferential surface 22 of the second member 2 and the inner circumferential surface 23 of the seal.
Then, the first member 1 is inserted into the hollow portion 20 of the second member 2 until the groove 24 formed on the inner peripheral surface of the inner surface 22 of the stopper member coincides with the groove 13 of the outer peripheral surface 11. Then, the engaging member 42 spreads into the groove 24 of the inner circumferential surface 22 to prevent the first member from coming out of the hollow portion 20 of the second member 2.
The member 1 does not come off, and the opening / closing cap C is assembled.
【００２５】このように開閉用キャップＣが組み立てら
れた状態においては，第１部材１の摩擦円周面１０と第
２部材２の摩擦内円周面２１との間にトレランスリング
３０が介在している。そして，トレランスリング３０の
外面に形成された突起３２が第１部材１の摩擦円周面１
０と第２部材２の摩擦内円周面２１の間で突っ張られ，
両者の間に摩擦力が発生する。In the state where the opening / closing cap C is assembled as described above, the tolerance ring 30 is interposed between the friction circumferential surface 10 of the first member 1 and the friction inner circumferential surface 21 of the second member 2. ing. The protrusions 32 formed on the outer surface of the tolerance ring 30 correspond to the friction circumferential surface 1 of the first member 1.
0 and the friction inner circumferential surface 21 of the second member 2
A friction force is generated between the two.
【００２６】また，ガイド３５のフランジ３６に形成さ
れた各貫通孔４０に保持されているボール４１は，付勢
手段としての皿バネ４６による押圧力で押し下げられ，
これにより，各ボール４１は，各貫通孔４０に保持され
ながらも，第１部材１の上端面に形成された４つの凹部
１５にそれぞれ受け入れられた状態となる。The ball 41 held in each through hole 40 formed in the flange 36 of the guide 35 is pushed down by a pressing force of a disc spring 46 as an urging means.
As a result, each ball 41 is received in each of the four recesses 15 formed on the upper end surface of the first member 1 while being held in each through hole 40.
【００２７】また，第１部材１のシール円周面１２に形
成された溝１４に装着されている封止部材４３は，第１
部材１のシール円周面１２と第２部材２のシール内円周
面２３の間で挟圧され，これにより，第２部材２に形成
された空洞部２０内は，シーリングされ，外部からの水
などの侵入が防がれる。The sealing member 43 mounted in the groove 14 formed in the seal circumferential surface 12 of the first member 1
Pressure is sandwiched between the seal circumferential surface 12 of the member 1 and the seal inner circumferential surface 23 of the second member 2, whereby the inside of the hollow portion 20 formed in the second member 2 is sealed and externally. Intrusion of water etc. is prevented.
【００２８】次に，以上のように構成された開閉用キャ
ップＣの使用状態を説明する。図７に示すように，弁Ｖ
は，円筒形状をなす弁箱５０内に弁体５１を配置し，こ
の弁体５１を開閉操作させる開閉軸５２を，弁箱５０の
上面に突出させた構成を有している。開閉軸５２は，角
柱形状に構成されている。そこで，この弁Ｖの開閉軸５
２に開閉用キャップＣの第１部材１を一体的に回転する
ように取り付ける。この場合，前述のように第１部材１
の下端面中心に形成された孔１７に弁Ｖの開閉軸５２を
挿入して係合させ，ネジ孔１８にネジ（図示せず）を螺
入することにより，孔１７内において開閉軸５２が回転
せず，かつ抜けないようにしっかりと固定する。なお，
弁Ｖが地中に埋設された水道管に取り付けられているよ
うな場合は，各弁Ｖの開閉軸５２に開閉用キャップＣを
予め装着しておくと良い。Next, the use of the opening / closing cap C configured as described above will be described. As shown in FIG.
Has a configuration in which a valve element 51 is disposed in a cylindrical valve box 50, and an opening / closing shaft 52 for opening and closing the valve element 51 is projected from the upper surface of the valve box 50. The opening / closing shaft 52 is formed in a prismatic shape. Therefore, the opening and closing shaft 5 of this valve V
2, the first member 1 of the opening / closing cap C is attached so as to rotate integrally. In this case, as described above, the first member 1
The opening / closing shaft 52 of the valve V is inserted into the hole 17 formed in the center of the lower end surface of the valve V, engaged therewith, and a screw (not shown) is screwed into the screw hole 18 so that the opening / closing shaft 52 is in the hole 17. Fix firmly so that it does not rotate and does not come off. In addition,
When the valves V are attached to a water pipe buried underground, an opening / closing cap C may be attached to the opening / closing shaft 52 of each valve V in advance.
【００２９】次に，弁Ｖを開閉操作する場合は，先ずマ
ンホール等をあけるなどして，Ｔレンチなどのハンドル
Ｈを挿入し，ハンドルＨの下端のチャック５５を，開閉
用キャップＣの第２部材２に形成された突起２８に係合
させる。そして，ハンドルＨを回動操作することによ
り，回転トルクを開閉用キャップＣを介して弁Ｖの開閉
軸５２に伝達し，弁体５１を回動させることが可能であ
る。Next, when opening and closing the valve V, a handle H such as a T wrench is inserted by opening a manhole or the like, and the chuck 55 at the lower end of the handle H is moved to the second position of the opening / closing cap C. The protrusion 28 formed on the member 2 is engaged. Then, by rotating the handle H, the rotational torque is transmitted to the opening / closing shaft 52 of the valve V via the opening / closing cap C, and the valve body 51 can be rotated.
【００３０】このように弁Ｖを開閉操作した場合，ハン
ドルＨに加わる回転トルクがトレランスリング３０の摩
擦力によって許容される範囲では，第１部材１と第２部
材２が一体的に回転するので，両者の間で回転トルクが
伝達される。これにより，弁体５１が回動することとな
る。また，このように第１部材１と第２部材２が一体的
に回転している間は，ガイド３５のフランジ３６に形成
された各貫通孔４０に保持されているボール４１は，皿
バネ４６による押圧力で押し下げられることにより，各
貫通孔４０に保持されながらも，第１部材１の上端面に
形成された４つの凹部１５にそれぞれ受け入れられた状
態になっている。When the valve V is opened and closed as described above, the first member 1 and the second member 2 rotate integrally as long as the rotational torque applied to the handle H is allowed by the frictional force of the tolerance ring 30. , Rotational torque is transmitted between the two. As a result, the valve element 51 rotates. Also, while the first member 1 and the second member 2 are rotating integrally, the ball 41 held in each through hole 40 formed in the flange 36 of the guide 35 is a disc spring 46 As a result, the first member 1 is received by the four recesses 15 formed on the upper end surface thereof while being held in the respective through holes 40.
【００３１】一方，ハンドルＨに加わる回転トルクがト
レランスリング３０の摩擦力によって許容される範囲を
越えた場合は，摩擦円周面１０と摩擦内円周面２１の間
でスリップが発生し，第２部材２は第１部材１に対して
回転する。こうして，ハンドルＨは空回りの状態とな
り，過大な回転トルクが第１部材１から弁Ｖの開閉軸５
２に加わることが防止される。On the other hand, when the rotational torque applied to the handle H exceeds the range permitted by the frictional force of the tolerance ring 30, a slip occurs between the friction circumferential surface 10 and the friction inner circumferential surface 21 and the slip occurs. The two members 2 rotate with respect to the first member 1. In this manner, the handle H is in an idling state, and excessive rotation torque is applied from the first member 1 to the opening / closing shaft 5 of the valve V.
2 is prevented.
【００３２】そして，このように第２部材２が第１部材
１に対して回転したことに伴って，ガイド３５も第２部
材２と一体的に回転し，ガイド３５のフランジ３６に形
成された各貫通孔４０に保持されているボール４１も移
動することとなる。このように，ハンドルＨが空回りし
ている状態では，第１部材１の上端面に形成された凹部
１５に対してボール４１が移動するが，前述のように各
凹部１５と各貫通孔４０は，互いに同じ円周上に配置さ
れているので，ボール４１は各貫通孔４０に保持されな
がら第１部材１の上端面において回転移動し，その移動
中に，皿バネ４６の押圧力で押し下げられて凹部１５に
受け入れられた状態と，皿バネ４６の押圧力に抗して凹
部１５から抜け出された状態とを繰り返していく。As the second member 2 rotates with respect to the first member 1, the guide 35 also rotates integrally with the second member 2 and is formed on the flange 36 of the guide 35. The ball 41 held in each through hole 40 also moves. As described above, when the handle H is idling, the ball 41 moves with respect to the concave portion 15 formed on the upper end surface of the first member 1, but as described above, each concave portion 15 and each through hole 40 Since the balls 41 are arranged on the same circumference, the ball 41 rotates and moves at the upper end surface of the first member 1 while being held in each through hole 40, and is pressed down by the pressing force of the disc spring 46 during the movement. Thus, the state of being received by the recess 15 and the state of being pulled out of the recess 15 against the pressing force of the disc spring 46 are repeated.
【００３３】即ち，図８に示すように，凹部１５に対し
て貫通孔４０の位置がずれていく場合は，貫通孔４０の
内面で押し出されることにより，皿バネ４６の押圧力に
抗してボール４１は凹部１５から抜け出し，ワッシャー
４５を介して皿バネ４６を押し上げる。このようにボー
ル４１が凹部１５から押し出される際には，その衝撃が
第２部材２等を介してハンドルＨに伝達される。こうし
て，凹部１５から押し出されたボール４１は，その後，
第１部材１の上端面を転動しながら移動していく。な
お，前述のように凹部１５の入口角部がテーパー面１６
に形成されているので，このようにボール４１は凹部１
５から抜け出す場合，テーパー面１６を転がり上がるこ
ととなるので，ボール４１を引っかかることなく円滑に
押し出すことが可能である。That is, as shown in FIG. 8, when the position of the through hole 40 is shifted with respect to the concave portion 15, the through hole 40 is pushed out by the inner surface of the through hole 40 so as to resist the pressing force of the disc spring 46. The ball 41 comes out of the recess 15 and pushes up the disc spring 46 via the washer 45. When the ball 41 is pushed out of the recess 15 in this manner, the impact is transmitted to the handle H via the second member 2 and the like. The ball 41 pushed out from the recess 15 in this manner is thereafter
The first member 1 moves while rolling on the upper end surface. In addition, as described above, the entrance corner of the recess 15 has the tapered surface 16.
The ball 41 is thus formed in the recess 1
In the case where the ball 41 is pulled out, the ball 41 rolls up, so that the ball 41 can be pushed out smoothly without being caught.
【００３４】一方，図９に示すように，凹部１５の位置
に貫通孔４０が一致してくる場合は，皿バネ４６の押圧
力で押し下げられることにより，今まで第１部材１の上
端面を移動していたボール４１が凹部１５内に再び入り
込む。この場合，前述のように貫通孔４０の直径がボー
ル４１の直径よりも大きく設定されて，貫通孔４０内に
おいてボール４１が余裕を持って保持されているので，
凹部１５の位置と貫通孔４０の位置が一致すると，ボー
ル４１は貫通孔４０の内面を離れるように転がり出し，
皿バネ４６の押圧力により，テーパー面１６を転がり落
ちながら凹部１５に向かって勢い良く移動していく。こ
れにより，ボール４１は凹部１５の入口に勢い良くぶつ
かり，それに伴って衝突音が発生する。このようにボー
ル４１が凹部１５に再び入り込む際にも，その衝撃が第
２部材２等を介してハンドルＨに伝達される。On the other hand, as shown in FIG. 9, when the through hole 40 coincides with the position of the concave portion 15, the upper end surface of the first member 1 has been pushed down by the pressing force of the disc spring 46. The moved ball 41 enters the recess 15 again. In this case, as described above, the diameter of the through hole 40 is set to be larger than the diameter of the ball 41, and the ball 41 is held in the through hole 40 with a margin.
When the position of the recess 15 matches the position of the through hole 40, the ball 41 rolls out of the inner surface of the through hole 40,
Due to the pressing force of the disc spring 46, it moves toward the recess 15 vigorously while rolling down the tapered surface 16. As a result, the ball 41 vigorously hits the entrance of the concave portion 15, and a collision sound is generated accordingly. Thus, even when the ball 41 reenters the concave portion 15, the impact is transmitted to the handle H via the second member 2 and the like.
【００３５】こうして，ハンドルＨが空回りしている状
態では，第２部材２が第１部材１に対して回転すること
により，ボール４１が凹部１５に出入りする毎に衝撃に
よる振動や衝撃音が発生する。かくして，ハンドルＨを
操作している者は，見えなくても第２部材２が第１部材
１に対してスリップしていることを手の感触と音によっ
て確認できるようになる。Thus, when the handle H is idling, the second member 2 rotates with respect to the first member 1, so that every time the ball 41 moves into or out of the recess 15, vibration or impact sound is generated due to impact. I do. Thus, the person operating the handle H can confirm by touch and sound of the hand that the second member 2 is slipping with respect to the first member 1 without being visible.
【００３６】以上，本発明の好ましい実施の形態の一例
を示したが，本発明はここで説明した形態に限定されな
い。例えば，図示の例では，ガイド３５のフランジ３６
に形成される各貫通孔４０の直径（内径）をボール４１
の直径よりも大きく設定したが，図６中に点線４０’で
記入したように，各貫通孔４０を，円周方向に長くなる
ように形成された楕円形状や長穴形状に構成しても良
い。そうすれば，凹部１５の位置と貫通孔４０の位置が
一致した場合に，ボール４１は貫通孔４０の中を円周方
向に確実に移動して，凹部１５の入口に勢い良くぶつか
り，大きい衝突音を得ることができる。また，第１部材
にガイドを装着し，第２部材に凹部を設けても良い。ま
た，付勢手段は皿バネの他，コイルバネやその他の弾性
部材を利用しても良い。また，移動部材はボールの他，
ローラなどでも良い。なお，トレランスリングの形状や
種類を変更することにより，第１部材と第２部材が相対
的に回転を始める回転トルクは適宜変えることができ
る。また，トレランスリングに対する第１部材や第２部
材の接触面積を変更することにより，第１部材と第２部
材が相対的に回転を始める回転トルクを調整しても良
い。Although the preferred embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment. For example, in the illustrated example, the flange 36 of the guide 35 is used.
The diameter (inner diameter) of each through hole 40 formed in the
However, as shown by a dotted line 40 'in FIG. 6, each through hole 40 may be formed in an elliptical shape or a long hole shape formed to be longer in the circumferential direction. good. Then, when the position of the recess 15 coincides with the position of the through hole 40, the ball 41 reliably moves in the circumferential direction in the through hole 40, and collides vigorously with the entrance of the recess 15, causing a large collision. You can get sound. Further, a guide may be attached to the first member, and a concave portion may be provided in the second member. In addition, the biasing means may use a coil spring or another elastic member in addition to the disc spring. In addition to the ball,
A roller may be used. By changing the shape and type of the tolerance ring, the rotation torque at which the first member and the second member start to rotate relatively can be changed as appropriate. Further, by changing the contact area of the first member and the second member with the tolerance ring, the rotation torque at which the first member and the second member start to rotate relatively may be adjusted.
【００３７】[0037]
【発明の効果】本発明によれば，過大な回転トルクが開
閉軸や弁体に加わることを回避でき，弁の損傷を防止で
きる。また，地中などの見えない箇所に配置された弁を
開閉させる際にも，手の感触や音によって第１部材と第
２部材が互いにスリップしていることを確認でき，弁の
状態を知ることが可能である。According to the present invention, excessive rotation torque can be prevented from being applied to the opening / closing shaft and the valve body, and the valve can be prevented from being damaged. Also, when opening and closing a valve arranged in an invisible place such as underground, it is possible to confirm that the first member and the second member are slipping with each other by the feel and sound of the hand, and to know the state of the valve. It is possible.
【図１】本発明の実施の形態にかかる開閉用キャップの
構造を示す縦断面図である。FIG. 1 is a longitudinal sectional view showing a structure of an opening / closing cap according to an embodiment of the present invention.
【図２】第１部材の斜視図である。FIG. 2 is a perspective view of a first member.
【図３】第２部材を切断して示した斜視図である。FIG. 3 is a perspective view showing a second member cut away.
【図４】トレランスリングの斜視図である。FIG. 4 is a perspective view of a tolerance ring.
【図５】ガイドの斜視図である。FIG. 5 is a perspective view of a guide.
【図６】ガイドの平面図である。FIG. 6 is a plan view of a guide.
【図７】本発明の実施の形態にかかる開閉用キャップの
使用状態の説明図である。FIG. 7 is an explanatory diagram of a use state of the opening / closing cap according to the embodiment of the present invention.
【図８】ボールが凹部から抜け出した状態の説明図であ
る。FIG. 8 is an explanatory diagram of a state in which a ball has slipped out of a recess.
【図９】ボールが凹部に入り込んだ状態の説明図であ
る。FIG. 9 is an explanatory diagram of a state where a ball has entered a concave portion.
Ｃ 開閉用キャップ Ｈ ハンドル Ｖ 弁 １ 第１部材 ２ 第２部材 １０ 摩擦円周面 １１ 抜け防止円周面 １２ シール円周面 １５ 凹部 ２０ 空洞部 ２１ 摩擦内円周面 ２２ 抜け防止内円周面 ２３ シール内円周面 ３０ トレランスリング ３５ ガイド ３８ ピン ４０ 貫通孔 ４１ ボール ４２ 係合部材 ４３ 封止部材 ４５ ワッシャー ４６ 皿バネ ５２ 開閉軸 C Opening / closing cap H Handle V valve 1 First member 2 Second member 10 Friction circumferential surface 11 Pull-out preventing circumferential surface 12 Seal circumferential surface 15 Depression 20 Cavity 21 Friction inner circumferential surface 22 Pull-out preventing inner circumferential surface 23 Seal inner circumferential surface 30 Tolerance ring 35 Guide 38 Pin 40 Through hole 41 Ball 42 Engaging member 43 Sealing member 45 Washer 46 Disc spring 52 Opening / closing shaft
Claims (4)
トルクを伝えるための開閉用キャップであって，開閉軸
と一体的に回転するように取り付けられる第１部材と，
第１部材に対して相対的に回転可能に取り付けられる第
２部材を有し，かつ，第１部材と第２部材を所定のトル
クまで伝達可能に接続し，第１部材と第２部材の間に移
動部材を介在させ，第１部材と第２部材の一方に移動部
材を抜け出し可能に受け入れさせる凹部を設け，第１部
材と第２部材の他方に移動部材を一体的に回転させるガ
イドを設け，第１部材と第２部材の一方に設けられた凹
部に移動部材を受け入れた状態に付勢する付勢手段を設
けてなることを特徴とする，弁の開閉用キャップ。An opening / closing cap mounted on an opening / closing shaft of a valve for transmitting a rotational torque to the opening / closing shaft, the first member being attached so as to rotate integrally with the opening / closing shaft,
A second member attached to the first member so as to be rotatable relative to the first member; and a first member and a second member connected to each other so as to be able to transmit a predetermined torque. A concave member is provided on one of the first member and the second member for receiving the movable member so that the movable member can come out, and a guide for integrally rotating the movable member is provided on the other of the first member and the second member. An opening / closing cap for a valve, wherein a biasing means for biasing the movable member to be received is provided in a concave portion provided in one of the first member and the second member.
と同軸に配置された円周面が形成され，他方にこの円周
面に対向する内円周面が形成されていることを特徴とす
る，請求項１の弁の開閉用キャップ。2. One of the first member and the second member has a circumferential surface formed coaxially with the opening / closing axis of the valve, and the other has an inner circumferential surface opposed to the circumferential surface. The valve opening / closing cap according to claim 1, characterized in that:
円周面と他方に形成された内円周面の間に，所定のトル
クまで伝達可能なトレランスリングが介在していること
を特徴とする，請求項２の弁の開閉用キャップ。3. A tolerance ring capable of transmitting a predetermined torque is interposed between a circumferential surface formed on one of the first member and the second member and an inner circumferential surface formed on the other. The valve opening / closing cap according to claim 2, characterized in that:
部材はボールであることを特徴とする，請求項１，２又
は３のいずれかの弁の開閉用キャップ。4. The valve opening / closing cap according to claim 1, wherein the moving member interposed between the first member and the second member is a ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001077078A JP2002276847A (en) | 2001-03-16 | 2001-03-16 | Cap for opening and closing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001077078A JP2002276847A (en) | 2001-03-16 | 2001-03-16 | Cap for opening and closing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002276847A true JP2002276847A (en) | 2002-09-25 |
Family
ID=18933890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001077078A Pending JP2002276847A (en) | 2001-03-16 | 2001-03-16 | Cap for opening and closing valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002276847A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002276848A (en) * | 2001-03-16 | 2002-09-25 | Maezawa Ind Inc | Cap for opening and closing valve |
| JP2010508473A (en) * | 2006-10-27 | 2010-03-18 | フィッシャー コントロールズ インターナショナル リミテッド ライアビリティー カンパニー | Collet biasing device for valve actuator |
| JP2010286022A (en) * | 2009-06-10 | 2010-12-24 | Paramount Bed Co Ltd | Torque release mechanism of operation handle |
-
2001
- 2001-03-16 JP JP2001077078A patent/JP2002276847A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002276848A (en) * | 2001-03-16 | 2002-09-25 | Maezawa Ind Inc | Cap for opening and closing valve |
| JP4634630B2 (en) * | 2001-03-16 | 2011-02-16 | 前澤工業株式会社 | Valve cap |
| JP2010508473A (en) * | 2006-10-27 | 2010-03-18 | フィッシャー コントロールズ インターナショナル リミテッド ライアビリティー カンパニー | Collet biasing device for valve actuator |
| JP2010286022A (en) * | 2009-06-10 | 2010-12-24 | Paramount Bed Co Ltd | Torque release mechanism of operation handle |
| TWI403650B (en) * | 2009-06-10 | 2013-08-01 | Paramount Bed Kk | Torque release device for operating lever |
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