JP2013228058A5

JP2013228058A5 -

Info

Publication number: JP2013228058A5
Application number: JP2012101289A
Authority: JP
Filing date: 2012-04-26
Publication date: 2014-11-13
Anticipated expiration: 2032-04-26

Description

本発明の方向制御弁は、空気が供給される供給ポートと、当該供給ポートからの空気を流出する出力ポートと、前記出力ポートへ戻される空気を外部に排出する排出ポートに連通するとともに前記供給ポートおよび前記出力ポートを連通させる供給側の弁孔とを有する弁収容孔が形成される弁ハウジングと、前記弁収容孔内に設けられ、前記出力ポートと前記排出ポートとを連通させる排出側の弁孔が設けられた円筒形状のガイド部材と、前記弁収容孔に軸方向に往復動自在に装着される弁軸と、前記ガイド部材の端部に設けられ、前記弁軸に設けられた弁体に当接して前記排出側の弁孔を閉じ、前記弁体から離れて前記排出側の弁孔を開放する排出側の弁座面と、前記弁軸に向けて径方向内方に突出するとともに、円周方向に離れて前記ガイド部材の内面に設けられ、相互間に前記ガイド部材の連通溝を形成する少なくとも３つのガイド部材の突起部と、前記ガイド部材の突起部に軸方向に伸びて設けられ、前記弁軸を支持するガイド部材の線接触部とを有し、前記ガイド部材は、前記ガイド部材の線接触部で前記弁軸を軸方向にガイドするとともに、前記弁体に前記排出側の弁座面を当接させてシールすることを特徴とする。 Directional control valves of the present invention, the feed supply port air is supplied, and an output port for the outflow of air from the supply port, communicated with the exhaust port for discharging air that is returned to the output port to the outside A valve housing having a valve housing hole having a port and a supply-side valve hole communicating with the output port; and a discharge housing provided in the valve housing hole for communicating the output port with the discharge port. A cylindrical guide member provided with a valve hole, a valve shaft that is reciprocally mounted in the valve housing hole in the axial direction, and a valve provided at an end of the guide member and provided on the valve shaft A valve seat on the discharge side that contacts the body and closes the valve hole on the discharge side, opens the valve hole on the discharge side away from the valve body, and protrudes radially inward toward the valve shaft together with the moth apart circumferentially Provided on the inner surface of the de member, the projection portion of the at least three guide members to form a communicating groove of the guide member therebetween, provided extending in the axial direction the protrusion of the guide member, support the valve shaft The guide member guides the valve shaft in the axial direction at the line contact portion of the guide member, and abuts the valve seat surface on the discharge side against the valve body. It is characterized by making it seal .

弁収容孔１１において、供給ポート１２と出力ポート１３ａ，１３ｂを連通する弁孔４１ａと４１ｂは内径が最も小さい。出力ポート１３ａ，１３ｂと排出ポート１４ａ，１４ｂの間であってガイド部材２４ａ，２４ｂが嵌合する部分は、弁孔４１ａ，４１ｂよりも内径が大きい。弁収容孔１１の両端であって調整ねじ部材２５ａ，２５ｂがねじ結合する部分は、さらに内径が大きく、最大径部分となっている。 In the valve accommodating hole 11, the valve holes 41a and 41b communicating with the supply port 12 and the output ports 13a and 13b have the smallest inner diameter. Portions between the output ports 13a and 13b and the discharge ports 14a and 14b where the guide members 24a and 24b are fitted have larger inner diameters than the valve holes 41a and 41b. The portions where the adjustment screw members 25a and 25b are screw-coupled at both ends of the valve accommodating hole 11 have a larger inner diameter and become a maximum diameter portion.

図８に示されるように、弁軸２１は、供給側の弁孔４１ａ，４１ｂを貫通する連結軸５６と、これの両端部に連結される第１と第２の２つの弁付き軸５６ａ，５６ｂとにより形成されており、２つの弁付き軸５６ａ，５６ｂは同一形状となっている。連結軸５６の両端部には中央部分よりも小径となった小径連結部５７ａ，５７ｂが設けられ、第１の弁付き軸５６ａには小径連結部５７ａが嵌合される嵌合孔５８ａが一端部に形成され、第２の弁付き軸５６ｂには小径連結部５７ｂが嵌合される嵌合孔５８ｂが一端部に形成されている。それぞれの弁付き軸５６ａ，５６ｂの他端部には駆動駒３４，３５が取り付けられる小径連結部５９ａ，５９ｂが設けられている。 As shown in FIG. 8, the valve shaft 21 includes a connecting shaft 56 that passes through the valve holes 41a and 41b on the supply side, and first and second valved shafts 56a connected to both ends of the connecting shaft 56, 56b, and the two valve shafts 56a and 56b have the same shape. Small-diameter coupling portions 57a and 57b having a smaller diameter than the central portion are provided at both ends of the coupling shaft 56, and a fitting hole 58a into which the small-diameter coupling portion 57a is fitted is one end on the first valved shaft 56a. A fitting hole 58b is formed at one end of the second valved shaft 56b. The fitting hole 58b is fitted into the second valved shaft 56b. Small-diameter coupling portions 59a and 59b to which the drive pieces 34 and 35 are attached are provided at the other end portions of the valve-equipped shafts 56a and 56b.

Claims

空気が供給される供給ポートと、当該供給ポートからの空気を流出する出力ポートと、前記出力ポートへ戻される空気を外部に排出する排出ポートに連通するとともに前記供給ポートおよび前記出力ポートを連通させる供給側の弁孔とを有する弁収容孔が形成される弁ハウジングと、
前記弁収容孔内に設けられ、前記出力ポートと前記排出ポートとを連通させる排出側の弁孔が設けられた円筒形状のガイド部材と、
前記弁収容孔に軸方向に往復動自在に装着される弁軸と、
前記ガイド部材の端部に設けられ、前記弁軸に設けられた弁体に当接して前記排出側の弁孔を閉じ、前記弁体から離れて前記排出側の弁孔を開放する排出側の弁座面と、
前記弁軸に向けて径方向内方に突出するとともに、円周方向に離れて前記ガイド部材の内面に設けられ、相互間に前記ガイド部材の連通溝を形成する少なくとも３つのガイド部材の突起部と、
前記ガイド部材の突起部に軸方向に伸びて設けられ、前記弁軸を支持するガイド部材の線接触部とを有し、
前記ガイド部材は、前記ガイド部材の線接触部で前記弁軸を軸方向にガイドするとともに、前記弁体に前記排出側の弁座面を当接させてシールすることを特徴とする方向制御弁。 A supply port through which air is supplied, and an output port for the outflow of air from the supply port, communicating said supply port and said output port communicated with the discharge port for discharging the air that is returned to the output port to the outside A valve housing formed with a valve housing hole having a valve hole on the supply side;
A cylindrical guide member provided in the valve housing hole and provided with a discharge-side valve hole for communicating the output port and the discharge port ;
A valve shaft that is reciprocally mounted in the valve housing hole in the axial direction ;
A discharge-side valve is provided at an end of the guide member, abuts on a valve body provided on the valve shaft, closes the discharge-side valve hole, and separates from the valve body and opens the discharge-side valve hole. A valve seat surface;
With projecting radially inwardly toward the valve shaft, apart circumferentially provided on an inner surface of the guide member, the protruding portion of the at least three guide members forming the communicating groove of the guide member therebetween When,
A protruding portion of the guide member that extends in the axial direction and has a line contact portion of the guide member that supports the valve shaft;
The guide member guides the valve shaft in the axial direction at a line contact portion of the guide member, and seals the valve body by contacting the valve seat surface on the discharge side. .

請求項１記載の方向制御弁において、
前記供給側の弁孔の端部に供給側の弁座面を形成し、
前記弁軸に向けて径方向内方に突出するとともに、円周方向に離れて相互間に弁ハウジングの連通溝を形成する少なくとも３つの弁ハウジングの突起部を、前記供給側の弁孔の内面に設け、
軸方向に伸びて前記弁軸を支持する弁ハウジングの線接触部を、前記弁ハウジングの突起部に設け、
前記弁ハウジングの線接触部と前記ガイド部材の線接触部とにより前記弁軸をガイドすることを特徴とする方向制御弁。 The direction control valve according to claim 1,
Forming a valve seat surface on the supply side at the end of the valve hole on the supply side;
Projecting portions of at least three valve housings projecting inward in the radial direction toward the valve shaft and forming communication grooves of the valve housing between them in a circumferential direction are provided on the inner surface of the valve hole on the supply side Provided in
A line contact portion of the valve housing that extends in the axial direction and supports the valve shaft is provided on the protrusion of the valve housing,
A directional control valve characterized in that the valve shaft is guided by a line contact portion of the valve housing and a line contact portion of the guide member.

請求項２記載の方向制御弁において、
前記ガイド部材が嵌合する部分は、前記供給側の弁孔の内径よりも大きいことを特徴とする方向制御弁。 The direction control valve according to claim 2,
The direction control valve according to claim 1, wherein a portion into which the guide member is fitted is larger than an inner diameter of the valve hole on the supply side.

請求項１記載の方向制御弁において、
前記出力ポートは、第１の出力ポートと第２の出力ポートの２つであり、前記排出ポートは、前記第１の出力ポートに連通する第１の排出ポートと、前記第２の出力ポートに連通する第２の排出ポートとの２つであり、
前記ガイド部材は、前記第１の出力ポートと前記第１の排出ポートとを連通させる排出側の第１の弁孔が設けられた円筒形状の第１のガイド部材と、前記第２の出力ポートと前記第２の排出ポートとを連通させる排出側の第２の弁孔が設けられた円筒形状の第２のガイド部材との２つであり、
前記供給側の弁孔は、前記供給ポートと前記第１の出力ポートとを連通させる供給側の第１の弁孔と、前記供給ポートと前記第２の出力ポートとを連通させる供給側の第２の弁孔との２つであることを特徴とする方向制御弁。 The direction control valve according to claim 1,
There are two output ports, a first output port and a second output port, and the discharge port includes a first discharge port that communicates with the first output port, and a second output port. Two with a second discharge port in communication,
The guide member includes a cylindrical first guide member provided with a first valve hole on a discharge side for communicating the first output port with the first discharge port, and the second output port. And a cylindrical second guide member provided with a second valve hole on the discharge side for communicating with the second discharge port,
The supply-side valve hole includes a supply-side first valve hole that communicates the supply port and the first output port, and a supply-side first hole that communicates the supply port and the second output port. A directional control valve having two valve holes.

請求項４記載の方向制御弁において、
前記弁軸に向けて径方向内方に突出するとともに、相互間にガイド部材の連通溝を形成する少なくとも３つのガイド部材の突起部を、前記第１と第２のガイド部材の内周面に円周方向に離して設け、
前記ガイド部材の突起部に前記弁軸を支持するガイド部材の線接触部を軸方向に伸ばして設けることを特徴とする方向制御弁。 The direction control valve according to claim 4,
Projecting portions of at least three guide members projecting radially inward toward the valve shaft and forming communication grooves of the guide members therebetween are formed on the inner peripheral surfaces of the first and second guide members. Set apart in the circumferential direction,
A directional control valve characterized in that a linear contact portion of a guide member that supports the valve shaft is provided to extend in the axial direction at a protruding portion of the guide member.

請求項４記載の方向制御弁において、
前記弁軸に向けて径方向内方に突出するとともに、円周方向に離れて相互間に弁ハウジングの連通溝を形成する少なくとも３つの弁ハウジングの突起部とを前記第１と第２の弁孔の内面に設け、
軸方向に伸びて前記弁軸を支持する弁ハウジングの線接触部を、前記弁ハウジングの突起部に設けたことを特徴とする方向制御弁。 The direction control valve according to claim 4,
The at least three valve housing protrusions projecting radially inward toward the valve shaft and spaced apart in the circumferential direction to form a communication groove of the valve housing therebetween. Provided on the inner surface of the hole,
A directional control valve characterized in that a line contact portion of a valve housing that extends in the axial direction and supports the valve shaft is provided on a protrusion of the valve housing.

請求項４記載の方向制御弁において、
前記弁軸は、連結軸と当該連結軸の両端に連結される弁付き軸とにより形成されることを特徴とする方向制御弁。 The direction control valve according to claim 4,
The valve shaft is formed by a connecting shaft and a valved shaft connected to both ends of the connecting shaft.

請求項４記載の方向制御弁において、
前記ガイド部材を取り付ける調整ねじ部材を、前記弁収容孔の両端部にねじ結合し、前記調整ねじ部材により前記弁軸の移動範囲を調整することを特徴とする方向制御弁。 The direction control valve according to claim 4,
An directional control valve characterized in that an adjusting screw member for attaching the guide member is screwed to both ends of the valve housing hole, and a moving range of the valve shaft is adjusted by the adjusting screw member.

請求項４記載の方向制御弁において、
前記第１の排出ポートと前記第２の排出ポートとを連通する連通路を、前記供給ポートと前記第１および第２の出力ポートに対してずらして前記弁ハウジングに設けたことを特徴とする方向制御弁。 The direction control valve according to claim 4,
The valve housing is provided with a communication passage communicating with the first discharge port and the second discharge port, shifted from the supply port and the first and second output ports. Directional control valve.