JPH0214702Y2 - - Google Patents
Info
- Publication number
- JPH0214702Y2 JPH0214702Y2 JP10398185U JP10398185U JPH0214702Y2 JP H0214702 Y2 JPH0214702 Y2 JP H0214702Y2 JP 10398185 U JP10398185 U JP 10398185U JP 10398185 U JP10398185 U JP 10398185U JP H0214702 Y2 JPH0214702 Y2 JP H0214702Y2
- Authority
- JP
- Japan
- Prior art keywords
- spool
- valve
- valve body
- spool valve
- seat
- 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.)
- Expired
Links
- 239000000919 ceramic Substances 0.000 claims description 31
- 239000000463 material Substances 0.000 claims description 7
- 238000005299 abrasion Methods 0.000 claims description 5
- 239000002245 particle Substances 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 230000005484 gravity Effects 0.000 description 5
- 230000004043 responsiveness Effects 0.000 description 5
- 239000000696 magnetic material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910000967 As alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
Landscapes
- Magnetically Actuated Valves (AREA)
- Lift Valve (AREA)
- Sliding Valves (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、例えば電磁弁や方向切換弁等に用い
られるスプール弁体に関し、特に、開弁、閉弁動
作を高速で応答性良く行いうるようにしたスプー
ル弁体に関する。[Detailed description of the invention] [Industrial field of application] The present invention relates to a spool valve body used for example in a solenoid valve or a directional control valve, and in particular, it is capable of opening and closing a valve at high speed and with good responsiveness. The present invention relates to a spool valve body having the above-mentioned structure.
第３図および第４図に従来技術のスプール弁体
を電磁弁を例に挙げて示す。
FIGS. 3 and 4 show conventional spool valve bodies using a solenoid valve as an example.
図において、１は電磁弁本体を構成する弁ケー
シングで、該ケーシング１は円筒状のケース２
と、該ケース２の一端に衝合され、これを施蓋し
ている有底筒状のカバー３と、前記ケース２の他
端に後述のコア５を介して衝合され、該ケース２
に固定された有底筒状のソケツト４とからなる。
ここで、ケース２内には後述のスプール弁体１１
が摺動するシリンダ穴２Ａが軸方向に穿設され、
該シリンダ穴２Ａの一端側にはケース２の端面に
位置するように弁座２Ｂが形成されている。そし
て、該ケース２にはシリンダ穴２Ａと連通するよ
うに径方向に油液の流入ポート２Ｃが穿設されて
いる。また、前記カバー３には前記シリンダ穴２
Ａよりも大径に形成された油室３Ａが設けられ、
該油室３Ａに連通するように径方向に油液の流出
ポート３Ｂが穿設されている。 In the figure, 1 is a valve casing that constitutes the solenoid valve body, and the casing 1 is a cylindrical case 2.
A bottomed cylindrical cover 3 is abutted against one end of the case 2 and covers it, and a cover 3 is abutted against the other end of the case 2 via a core 5 to be described later.
A cylindrical socket 4 with a bottom is fixed to the socket 4.
Here, inside the case 2 is a spool valve body 11 which will be described later.
A cylinder hole 2A in which the cylinder slides is bored in the axial direction,
A valve seat 2B is formed at one end of the cylinder hole 2A so as to be located on the end surface of the case 2. The case 2 is provided with an oil inflow port 2C in the radial direction so as to communicate with the cylinder hole 2A. The cover 3 also has the cylinder hole 2.
An oil chamber 3A formed with a larger diameter than A is provided,
An oil outflow port 3B is provided in the radial direction so as to communicate with the oil chamber 3A.
一方、前記ソケツト４は磁性材料から形成さ
れ、その底部４Ａには後述するコア５の底部５Ａ
側が嵌挿される孔４Ｂが穿設されている。５は有
底筒状に磁性材料から形成されたコアで、該コア
５の底部５Ａ側は前記ソケツト４の孔４Ｂ内に嵌
挿され軸方向に突出しており、開口端側には径方
向にフランジ５Ｂが突設され、該フランジ５Ｂは
前記ケース２、ソケツト４間で挟持されている。
また、該コア５の開口端にはフランジ５Ｂの内周
側に位置して後述の固定子７を位置決めするため
の係合溝５Ｃが設けられている。図中、６は前記
ソケツト４の内側に位置してコア５の周囲に巻回
されたコイルで、該コイル６は前記ソケツト４、
コア５および後述の固定子７、プランジヤ９中に
磁気回路を形成するようになつている。 On the other hand, the socket 4 is made of a magnetic material, and the bottom 4A of the socket 4 has a bottom 5A of a core 5, which will be described later.
A hole 4B into which the side is inserted is bored. Reference numeral 5 denotes a core made of a magnetic material in the shape of a cylinder with a bottom. The bottom 5A side of the core 5 is fitted into the hole 4B of the socket 4 and protrudes in the axial direction, and the open end side has a radial hole. A flange 5B is provided in a protruding manner and is held between the case 2 and the socket 4.
Furthermore, an engagement groove 5C is provided at the open end of the core 5, located on the inner peripheral side of the flange 5B, for positioning a stator 7, which will be described later. In the figure, 6 is a coil located inside the socket 4 and wound around the core 5;
A magnetic circuit is formed in the core 5, a stator 7, and a plunger 9, which will be described later.
次に、７は前記コア５の開口端側に嵌着された
固定子で、該固定子７は磁性材料から形成され、
その一端には前記係合溝５Ｃとケース２の他端と
の間に係合する環状突起７Ａが突設されている。
８は該固定子７内に軸方向に摺動可能に挿通さ
れ、両端が該固定子７から軸方向に突出するプツ
シユロツドである。９はコア５の底部５Ａと固定
子７との間に位置して該コア５内に摺動可能に挿
嵌されたプランジヤで、該プランジヤ９は磁性材
料から形成され、前記コイル６が励磁されたとき
に固定子７側に吸引され、前記プツシユロツド８
を軸方向に押動するようになつている。１０は前
記コア５の底部５Ａとプランジヤ９との間に配設
された弱ばねで、該弱ばね１０はプランジヤ９を
固定子７側に弱い力で付勢し、プツシユロツド８
の端面に該プランジヤ９を常時押付けるようにな
つている。 Next, 7 is a stator fitted to the open end side of the core 5, and the stator 7 is made of a magnetic material.
An annular projection 7A that engages between the engagement groove 5C and the other end of the case 2 projects from one end thereof.
A push rod 8 is inserted into the stator 7 so as to be slidable in the axial direction, and has both ends protruding from the stator 7 in the axial direction. A plunger 9 is located between the bottom 5A of the core 5 and the stator 7 and is slidably inserted into the core 5. The plunger 9 is made of a magnetic material and the coil 6 is excited. When the push rod 8
is designed to be pushed in the axial direction. Reference numeral 10 denotes a weak spring disposed between the bottom portion 5A of the core 5 and the plunger 9. The weak spring 10 biases the plunger 9 toward the stator 7 side with a weak force, and the push rod 8
The plunger 9 is always pressed against the end face of the plunger 9.
さらに、１１は前記シリンダ穴２Ａ内に摺動可
能に挿嵌されたスプール弁体で、該スプール弁体
１１は鉄を主成分とする合金鋼等の金属材料から
形成され、外周面がシリンダ穴２Ａ内を摺動する
摺動面１１Ａとなつた大径部１１Ｂと、該大径部
１１Ｂの一端から軸方向に延設され該大径部１１
Ｂよりも小径に形成された小径部１１Ｃと、該小
径部１１Ｃの一端から軸方向に逆円錐状に延設さ
れ、周面に前記弁座２Ｂに離着座するシート面１
１Ｄが設けられた弁部１１Ｅとからなる。そし
て、前記大径部１１Ｂの他端面には前記プツシユ
ロツド８の一端が当接され、スプール弁体１１は
該プツシユロツド８を介して開弁方向に往動され
るようになつている。また、図中、１２は前記油
室３Ａ内に位置して前記カバー３の底部と弁部１
１Ｅの一端面との間に配設されたばねで、該ばね
１２はスプール弁体１１を常時閉弁方向に付勢
し、前記コイル６の励磁が停止されている間前記
弁部１１Ｅのシート面１１Ｄを弁座２Ｂに着座さ
せ、前記シリンダ穴２Ａ内と油室３Ａ内との連通
を遮断するようになつている。 Furthermore, 11 is a spool valve body that is slidably inserted into the cylinder hole 2A, and the spool valve body 11 is made of a metal material such as alloy steel whose main component is iron, and the outer circumferential surface of the cylinder hole is A large diameter portion 11B serving as a sliding surface 11A that slides inside the large diameter portion 11A, and a large diameter portion 11B extending in the axial direction from one end of the large diameter portion 11B.
A small diameter portion 11C formed to have a smaller diameter than B, and a seat surface 1 that extends from one end of the small diameter portion 11C in an inverted conical shape in the axial direction and seats and separates from the valve seat 2B on the peripheral surface.
It consists of a valve part 11E in which a valve 1D is provided. One end of the push rod 8 is brought into contact with the other end surface of the large diameter portion 11B, and the spool valve body 11 is moved forward in the valve opening direction via the push rod 8. In addition, in the figure, 12 is located in the oil chamber 3A and is connected to the bottom of the cover 3 and the valve part 1.
1E, the spring 12 normally biases the spool valve body 11 in the valve-closing direction, and while the excitation of the coil 6 is stopped, the seat surface of the valve portion 11E 11D is seated on the valve seat 2B to block communication between the inside of the cylinder hole 2A and the inside of the oil chamber 3A.
このように構成された電磁弁では、コイル６を
励磁するとプランジヤ９が固定子７に吸引されて
プツシユロツド８を軸方向に押動し、該プツシユ
ロツド８によつてスプール弁体１１が開弁方向に
ばね１２の付勢力に抗して開弁方向に摺動され、
シート面１１Ｄが弁座２Ｂから離座される。この
結果、シリンダ穴２Ａ内と油室３Ａ内とが連通さ
れて流入ポート２Ｃからの油液が流出ポート３Ｂ
から流出されるようになる。一方、前記コイル６
の励磁を停止するとプランジヤ９の固定子７側へ
の吸引が中断されて、スプール弁体１１はばね１
２の付勢力によつて閉弁方向に摺動され、シート
面１１Ｄが弁座２Ｂに着座される。この結果、シ
リンダ穴２Ａ内と油室３Ａ内との連通が遮断さ
れ、流出ポート３Ｂからの油液の流出が停止され
る。 In the solenoid valve configured in this way, when the coil 6 is energized, the plunger 9 is attracted to the stator 7 and pushes the push rod 8 in the axial direction, and the push rod 8 moves the spool valve body 11 in the valve opening direction. It is slid in the valve opening direction against the biasing force of the spring 12,
The seat surface 11D is removed from the valve seat 2B. As a result, the inside of the cylinder hole 2A and the inside of the oil chamber 3A are communicated, and the oil from the inflow port 2C is transferred to the outflow port 3B.
It will be leaked from. On the other hand, the coil 6
When the excitation of the plunger 9 is stopped, the suction of the plunger 9 toward the stator 7 is interrupted, and the spool valve body 11 is moved by the spring 1.
It is slid in the valve closing direction by the urging force of 2, and the seat surface 11D is seated on the valve seat 2B. As a result, communication between the inside of the cylinder hole 2A and the inside of the oil chamber 3A is cut off, and the outflow of oil from the outflow port 3B is stopped.
ところで、上述の電磁弁では、スプール弁体１
１が鉄を主成分とする合金鋼で形成されており、
例えば鉄系金属の場合、比重が7.8程度であるこ
とを考慮すると、該スプール弁体１１の質量は相
当に大きくなつており、該スプール弁体１１には
大きな慣性力が作用してしまう。 By the way, in the above-mentioned solenoid valve, the spool valve body 1
1 is made of alloy steel whose main component is iron,
For example, in the case of iron-based metals, considering that the specific gravity is about 7.8, the mass of the spool valve body 11 is considerably large, and a large inertial force acts on the spool valve body 11.
このため、従来技術では、コイル６の励磁を頻
繁に繰り返してスプール弁体１１を閉弁方向、開
弁方向に高速で摺動させ、閉弁動作および開弁動
作を繰り返す場合に、該スプール弁体１１には大
きな慣性力が作用して、瞬間的な閉弁、開弁動作
を行えなくなり、応答性が非常に悪くなるという
欠点がある。また、スプール弁体１１の質量が大
きいため、ばね１２の付勢力やコイル６に流す電
力も大きくしなければならないという欠点があ
る。 For this reason, in the prior art, when the coil 6 is repeatedly excited to slide the spool valve body 11 at high speed in the valve-closing direction and the valve-opening direction, and when the valve-closing operation and the valve-opening operation are repeated, the spool valve A large inertial force acts on the body 11, making it impossible to instantaneously close or open the valve, resulting in very poor responsiveness. Furthermore, since the mass of the spool valve body 11 is large, there is a drawback that the biasing force of the spring 12 and the electric power flowing through the coil 6 must also be large.
本考案は上述した従来技術の欠点に鑑みなされ
たものであり、本考案が解決しようとする問題点
は、重量を軽量化することによつて開弁、閉弁動
作を高速で行うことができ、応答性を確実に向上
できるようにしたスプール弁体を提供することに
ある。
The present invention was developed in view of the above-mentioned shortcomings of the prior art, and the problem that the present invention attempts to solve is to reduce the weight so that valve opening and closing operations can be performed at high speed. The object of the present invention is to provide a spool valve body that can reliably improve responsiveness.
上述した問題点を解決するために本考案が採用
する手段の特徴は、スプール弁体をプラスチツク
材からなるスプール本体と、摺動面の耐摩耗性を
向上させるべく該スプール本体の表面を覆うセラ
ミツクス層とから構成したことにある。
The features of the means adopted by the present invention in order to solve the above-mentioned problems are that the spool valve body is made of a spool body made of plastic material, and the surface of the spool body is covered with ceramic to improve the abrasion resistance of the sliding surface. It is composed of layers.
以下、本考案の実施例を第１図および第２図に
基づき、電磁弁用スプール弁体を例に挙げて説明
する。なお、第１図、第２図ではスプール弁体の
みを明示し、電磁弁におけるその他の構成要素に
ついては、前述した第３図に示す従来技術の構成
要素を採用するものとする。
Embodiments of the present invention will be described below with reference to FIGS. 1 and 2, taking a spool valve body for a solenoid valve as an example. Note that in FIGS. 1 and 2, only the spool valve body is clearly shown, and the other components of the electromagnetic valve are those of the prior art shown in FIG. 3 described above.
而して、第１図は本考案の第１の実施例を示し
ている。 FIG. 1 shows a first embodiment of the present invention.
図において、２１は本実施例で採用するスプー
ル弁体を示し、該スプール弁体２１はプラスチツ
ク材からなるスプール本体２２と、該スプール本
体２２の表面を覆うセラミツクス層２３とで形成
されている。そして、該スプール弁体２１は従来
技術で述べたスプール弁体１１と同様に周面が摺
動面２１Ａとなつた大径部２１Ｂと、小径部２１
Ｃと、周面にシート面２１Ｄが設けられた弁部２
１Ｅとを有し、該大径部２１Ｂ、小径部２１Ｃお
よび弁部２１Ｅは実質的にプラスチツク材からな
る前記スプール本体２２で構成され、衝撃等に対
して大きな緩衝性能を有するようになつている。
また、前記摺動面２２Ａやシート面２２Ｄは前記
セラミツクス層２３から形成され、大きな耐摩耗
性能を有するようになつている。 In the figure, 21 indicates a spool valve body employed in this embodiment, and the spool valve body 21 is formed of a spool body 22 made of plastic material and a ceramic layer 23 covering the surface of the spool body 22. Similarly to the spool valve body 11 described in the prior art, the spool valve body 21 has a large diameter portion 21B whose circumferential surface is a sliding surface 21A, and a small diameter portion 21B.
C, and a valve portion 2 provided with a seat surface 21D on the circumferential surface.
1E, and the large diameter portion 21B, small diameter portion 21C, and valve portion 21E are substantially constituted by the spool body 22 made of plastic material, and are designed to have a large buffering performance against shocks and the like. .
Further, the sliding surface 22A and the seat surface 22D are formed from the ceramic layer 23, and have a high abrasion resistance.
ここで、該セラミツクス層２３は、例えば
Al2O3，SiC，Si3N4，ZrO2等のセラミツクス粒
子（数μ〜１mm程度の粒子）からなり、予めプラ
スチツク成型されたスプール本体２２の表面に前
記セラミツクス粒子を溶射等の手段で均一に付着
させるか、あるいは成型用金型の表面に前記セラ
ミツクス粒子を散りばめておき、その内部にスプ
ール本体２２を構成するプラスチツクの粉体を充
填して加圧成型する等の方法によつて形成されて
いる。そして、スプール本体２２を構成するプラ
スチツクの比重が1.2〜1.5程度であり、セラミツ
クス層２３を構成するセラミツクス粒子の比重が
3.1〜3.8程度（ただし、ZrO2の比重は5.9）である
ため、当該スプール弁体２１の重量は従来のスプ
ール弁体１１に比較して1/5〜1/6程度軽量化され
るようになつている。 Here, the ceramic layer 23 is, for example,
The ceramic particles are made of ceramic particles (particles of several microns to 1 mm) such as Al 2 O 3 , SiC, Si 3 N 4 , ZrO 2 , etc., and are applied to the surface of the spool body 22 which has been molded in plastic in advance by means such as thermal spraying. It can be formed by a method such as by uniformly adhering the particles, or by scattering the ceramic particles on the surface of a molding die, filling the inside with the plastic powder that constitutes the spool body 22, and press-molding the particles. has been done. The specific gravity of the plastic constituting the spool body 22 is approximately 1.2 to 1.5, and the specific gravity of the ceramic particles constituting the ceramic layer 23 is approximately 1.2 to 1.5.
Since the specific gravity of ZrO 2 is about 3.1 to 3.8 (however, the specific gravity of ZrO 2 is 5.9), the weight of the spool valve body 21 is reduced by about 1/5 to 1/6 compared to the conventional spool valve body 11. It's summery.
このように構成される本実施例のスプール弁体
２１も第３図中に示すシリンダ穴２Ａ内に摺動可
能に挿嵌され、コイル６の励磁、非励磁に応じて
シート面２１Ｄが弁座２Ｂに離着座し、開弁、閉
弁動作を行うが、当該スプール弁体２１はプラス
チツク製のスプール本体２２とセラミツクス層２
３とから形成されているから、重量を大幅に軽量
化でき、シリンダ穴２Ａ内を高速で摺動する場合
にも慣性力を小さくでき、開弁、閉弁動作を高速
で応答性良く行うことができる。さらに、摺動面
２１Ａやシート面２１Ｄはセラミツクス層２３で
構成しているので、耐摩耗性を向上でき、寿命を
大幅に長くできる。また、セラミツクスは耐衝撃
性能が低いが、耐衝撃性能の高いプラスチツク材
でスプール本体２２を形成し、その表面をセラミ
ツクス層２３で覆うようにしているので、衝撃緩
衝性能を確実に向上でき、特にシート面２１Ｄが
弁座２Ｂに衝突するときの衝撃等をスプール本体
２２によつて緩衝でき、衝撃強度を大幅に向上で
きる。加えて、当該スプール弁体２１は軽量に形
成されているから、ばね１２の付勢力やコイル６
に通電する電力を小さくでき、高性能な高速電磁
弁を得ることができる。 The spool valve body 21 of this embodiment configured as described above is also slidably inserted into the cylinder hole 2A shown in FIG. 2B and performs valve opening and closing operations, but the spool valve body 21 is separated from the plastic spool body 22 and the ceramic layer 2.
3, the weight can be significantly reduced and the inertial force can be reduced even when sliding at high speed inside the cylinder hole 2A, allowing valve opening and closing operations to be performed at high speed and with good responsiveness. Can be done. Furthermore, since the sliding surface 21A and the seat surface 21D are composed of the ceramic layer 23, the wear resistance can be improved and the life can be significantly extended. In addition, although ceramics have low impact resistance, the spool body 22 is made of a plastic material with high impact resistance, and its surface is covered with a ceramic layer 23, so that the impact buffering performance can be reliably improved. The impact caused when the seat surface 21D collides with the valve seat 2B can be buffered by the spool body 22, and the impact strength can be greatly improved. In addition, since the spool valve body 21 is lightweight, the biasing force of the spring 12 and the coil 6 are reduced.
The electric power applied to the valve can be reduced, and a high-performance, high-speed solenoid valve can be obtained.
第２図は本考案の第２の実施例を示し、本実施
例の特徴は、前記第１の実施例で用いたスプール
弁体２１のシート面２１Ｄに対応する部位にセラ
ミツクスリング３１を埋設したことにある。 FIG. 2 shows a second embodiment of the present invention, and the feature of this embodiment is that a ceramic ring 31 is embedded in a portion corresponding to the seat surface 21D of the spool valve body 21 used in the first embodiment. There is a particular thing.
ここで、該セラミツクスリング３１は弁部２１
Ｅの周面に対応する傾斜角をもつて円錐筒状に形
成されており、その外周面がシート面２１Ｄとな
るようにプラスチツク製のスプール本体２２に埋
設されている。そして、該セラミツクスリング３
１はAl2O3，SiC等の材料から成形されセラミツ
クス層２３の一部を構成するようになつている。 Here, the ceramic ring 31 is connected to the valve portion 21.
It is formed into a conical tube shape with an inclination angle corresponding to the circumferential surface of E, and is embedded in the plastic spool body 22 so that its outer circumferential surface becomes the seat surface 21D. And the ceramic ring 3
1 is molded from a material such as Al 2 O 3 or SiC, and constitutes a part of the ceramic layer 23 .
このように構成される本実施例でも、前記第１
の実施例とほぼ同様の作用効果を得ることができ
るが、特に本実施例では、シート面２１Ｄがセラ
ミツクスリング３１から形成されるため、該シー
ト面２１Ｄの耐摩耗性をより確実に向上できる。 Also in this embodiment configured in this way, the first
It is possible to obtain substantially the same effects as in the embodiment described above, but in particular in this embodiment, since the seat surface 21D is formed from the ceramic ring 31, the abrasion resistance of the seat surface 21D can be improved more reliably.
なお、前記各実施例では、スプール本体２２の
全表面をセラミツクス層２３またはセラミツクス
リング３１で覆うものとして述べたが、これに替
えて摺動面２１Ａおよびシート面２１Ｄのみをセ
ラミツクス層２３またはセラミツクスリング３１
で覆うように形成してもよい。この場合、第２図
に示すようにシート面２１Ｄはセラミツクスリン
グ３１で覆い、摺動面２１Ａは別途形成した円筒
状のセラミツクスリングで覆うようにし、セラミ
ツクス層２３を省略するようにしてもよい。 In each of the above embodiments, the entire surface of the spool body 22 is covered with the ceramic layer 23 or the ceramic ring 31, but instead of this, only the sliding surface 21A and the seat surface 21D are covered with the ceramic layer 23 or the ceramic ring 31. 31
It may be formed so as to be covered with. In this case, as shown in FIG. 2, the seat surface 21D may be covered with a ceramic ring 31, the sliding surface 21A may be covered with a separately formed cylindrical ceramic ring, and the ceramic layer 23 may be omitted.
また、前記各実施例では、電磁弁用のスプール
弁体を例に挙げて説明したが、本考案はこれに限
らず、図示した以外の電磁弁や方向切換弁、制御
弁等のスプール弁体にも適用できることは勿論で
ある。この場合、シート面２１Ｄを有せず、複数
の摺動面（ランド）間に切換通路を有する形式の
スプール弁体にも適用し得るものである。 Further, in each of the above embodiments, the spool valve body for a solenoid valve was explained as an example, but the present invention is not limited to this, and the spool valve body for solenoid valves other than those shown in the drawings, directional switching valves, control valves, etc. Of course, it can also be applied to In this case, the invention can also be applied to a spool valve body that does not have the seat surface 21D and has a switching passage between a plurality of sliding surfaces (lands).
以上詳述した通り、本考案によればスプール弁
体をプラスチツク材からなるスプール本体と、摺
動面やシート面の耐摩耗性を向上させるべく該ス
プール本体の表面を覆うセラミツクス層とで構成
したから、耐摩耗性や耐衝撃性を確実に向上でき
る上に、全体の重量を軽量化でき、当該スプール
弁体が弁ケーシング内を高速で摺動する場合にも
慣性力を小さくでき、開弁、閉弁動作を高速で応
答性良く行うことができ、高速電磁弁等の性能を
大幅に向上できる。また、電磁弁にあつてはコイ
ルに通電する電力を小さくできる等、種々の効果
を奏する。
As detailed above, according to the present invention, the spool valve body is composed of a spool body made of plastic material and a ceramic layer covering the surface of the spool body in order to improve the abrasion resistance of the sliding surface and seat surface. This not only reliably improves wear resistance and impact resistance, but also reduces the overall weight. Even when the spool valve element slides inside the valve casing at high speed, the inertia force can be reduced, making it easier to open the valve. , the valve closing operation can be performed at high speed and with good responsiveness, and the performance of high-speed solenoid valves, etc. can be greatly improved. Furthermore, in the case of a solenoid valve, various effects can be achieved, such as being able to reduce the electric power applied to the coil.
第１図は本考案の第１の実施例を示す縦断面
図、第２図は本考案の第２の実施例を示す縦断面
図、第３図および第４図は従来技術を示し、第３
図は電磁弁の縦断面図、第４図は第３図中に示す
スプール弁体の縦断面図である。
１……弁ケーシング、２Ｂ……弁座、２１……
スプール弁体、２１Ａ……摺動面、２１Ｄ……シ
ート面、２２……スプール本体、２３……セラミ
ツクス層、３１……セラミツクスリング。
FIG. 1 is a longitudinal cross-sectional view showing a first embodiment of the present invention, FIG. 2 is a longitudinal cross-sectional view showing a second embodiment of the present invention, FIGS. 3 and 4 show the prior art, and FIG. 3
The figure is a longitudinal sectional view of the electromagnetic valve, and FIG. 4 is a longitudinal sectional view of the spool valve body shown in FIG. 3. 1... Valve casing, 2B... Valve seat, 21...
Spool valve body, 21A... sliding surface, 21D... seat surface, 22... spool body, 23... ceramic layer, 31... ceramic ring.
Claims (1)
該弁ケーシング内に摺動可能に挿嵌されるスプ
ール弁体において、該スプール弁体をプラスチ
ツク材からなるスプール本体と、前記摺動面の
耐摩耗性を向上させるべく該スプール本体の表
面を覆うセラミツクス層とから構成したことを
特徴とするスプール弁体。 (2) 前記スプール弁体は弁座に離着座するシート
面を有し、該シート面にはセラミツクス層とし
てセラミツクスリングを埋設してなる実用新案
登録請求の範囲第(1)項記載のスプール弁体。[Scope of claims for utility model registration] (1) Having a sliding surface that slides inside the valve casing,
In the spool valve body that is slidably inserted into the valve casing, the spool valve body is made of a spool body made of plastic material, and the surface of the spool body is covered to improve the abrasion resistance of the sliding surface. A spool valve body comprising a ceramic layer. (2) The spool valve according to claim (1), wherein the spool valve body has a seat surface that takes off from and sits on the valve seat, and a ceramic ring is embedded as a ceramic layer in the seat surface. body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10398185U JPH0214702Y2 (en) | 1985-07-08 | 1985-07-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10398185U JPH0214702Y2 (en) | 1985-07-08 | 1985-07-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6212050U JPS6212050U (en) | 1987-01-24 |
| JPH0214702Y2 true JPH0214702Y2 (en) | 1990-04-20 |
Family
ID=30977046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10398185U Expired JPH0214702Y2 (en) | 1985-07-08 | 1985-07-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0214702Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006038862A1 (en) * | 2006-08-18 | 2008-02-21 | Scanwill Aps | Pressure intensifier with double seat valve |
| JP6080182B1 (en) * | 2015-12-02 | 2017-02-15 | 日本電産サンキョーシーエムアイ株式会社 | Motor-driven on / off valve |
-
1985
- 1985-07-08 JP JP10398185U patent/JPH0214702Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6212050U (en) | 1987-01-24 |
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