JPH0446154Y2 - - Google Patents
Info
- Publication number
- JPH0446154Y2 JPH0446154Y2 JP1986107641U JP10764186U JPH0446154Y2 JP H0446154 Y2 JPH0446154 Y2 JP H0446154Y2 JP 1986107641 U JP1986107641 U JP 1986107641U JP 10764186 U JP10764186 U JP 10764186U JP H0446154 Y2 JPH0446154 Y2 JP H0446154Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- hydraulic
- valve body
- pressure
- iron core
- 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
- 239000010720 hydraulic oil Substances 0.000 claims description 43
- 239000003921 oil Substances 0.000 claims description 38
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 24
- 238000007789 sealing Methods 0.000 claims description 10
- 230000000903 blocking effect Effects 0.000 claims 1
- 230000007257 malfunction Effects 0.000 description 5
- 238000003754 machining Methods 0.000 description 4
- 239000000696 magnetic material Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
Landscapes
- Magnetically Actuated Valves (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は、オイルポンプのような圧油源と、上
記圧油源から作動油を供給されて作動する油圧シ
リンダのような油圧装置とを連結する高圧作動油
通路内に介装され、電磁コイルによつて開閉され
る弁体を有する電磁弁に関するものである。[Detailed description of the invention] (Field of industrial application) The present invention uses a pressure oil source such as an oil pump and a hydraulic device such as a hydraulic cylinder that operates by being supplied with hydraulic oil from the pressure oil source. The present invention relates to a solenoid valve having a valve body interposed in a connected high-pressure hydraulic oil passage and opened and closed by an electromagnetic coil.
（従来の技術）
オイルポンプのような圧油源と、上記圧油源か
ら作動油を供給されて作動する油圧シリンダのよ
うな油圧装置とを連結する作動油通路内に、電磁
コイルによつて開閉される弁体を具えた電磁弁が
広く用いられている。(Prior Art) An electromagnetic coil is installed in a hydraulic oil passage connecting a pressure oil source such as an oil pump and a hydraulic device such as a hydraulic cylinder that is operated by being supplied with hydraulic oil from the pressure oil source. Solenoid valves equipped with a valve body that opens and closes are widely used.
特に、上記弁体が協働する弁座に対して面接触
することにより上記作動油通路を遮断するように
した電磁弁は、構造簡単で安価に入手し得る利点
はあるが、シール面の精度の点から、圧油源の作
動油圧力レベルが高い場合に漏洩を生じ易い。そ
こで、シール面の加工精度を上げ、かつ接触面圧
を高くして漏洩を防止しようとすると、加工費が
著しく高くなり、又電磁コイルの容量が増大する
ので、結局極めて高価なものとなる。 In particular, a solenoid valve in which the valve body is in surface contact with a cooperating valve seat to shut off the hydraulic oil passage has the advantage of having a simple structure and being available at low cost, but the accuracy of the sealing surface is From this point of view, leakage is likely to occur when the hydraulic oil pressure level of the pressure oil source is high. Therefore, if an attempt is made to prevent leakage by increasing the machining accuracy of the sealing surface and increasing the contact surface pressure, the machining cost will increase significantly and the capacity of the electromagnetic coil will also increase, resulting in an extremely expensive product.
一方、安価な通常グレードの電磁弁を用いて上
記のような漏洩が発生した場合、油圧装置に漏洩
作動油が供給されて蓄積し、その圧力が高くなつ
て誤作動を起す等の不具合が懸念される。 On the other hand, if a leak like the one described above occurs using an inexpensive regular-grade solenoid valve, there is concern that the leaked hydraulic oil will be supplied to the hydraulic system and accumulate, increasing the pressure and causing malfunctions. be done.
（考案が解決しようとする問題点）
本考案の目的は、上述したように電磁コイルに
よつて作動される弁体が協働する弁座に対して面
接触することにより高圧作動油通路を遮断するよ
うにしたタイプの電磁弁において、閉弁時にたと
え少量の作動油の漏洩が生じても、油圧装置の誤
作動が発生しないような構造簡単かつ小型軽量で
安価な構成を提供することである。(Problems to be solved by the invention) As mentioned above, the purpose of the invention is to block the high-pressure hydraulic oil passage by bringing the valve body operated by the electromagnetic coil into surface contact with the cooperating valve seat. To provide a solenoid valve of a type designed to have a simple structure, small size, light weight, and low cost so that malfunction of a hydraulic system will not occur even if a small amount of hydraulic oil leaks when the valve is closed. .
（問題点を解決するための手段）
本考案は、上記目的を達成するために創案され
たもので、オイルポンプのような圧油源と、上記
圧油源から作動油が供給されて作動する油圧シリ
ンダのような油圧装置と、上記圧油源と油圧装置
とを連結する作動油通路内に介装された弁ハウジ
ングと、上記弁ハウジング内に配設され上記圧油
源と油圧装置とを連通させ又は遮断する円錐状の
弁体と、同弁体の弁軸の一端に配設されて上記弁
ハウジング内に収容され上記圧油源からの作動油
圧力を受ける受圧部と、上記弁軸の他端に配設さ
れた鉄芯と、上記弁軸に弾性的に当接され上記弁
体を閉方向に付勢するスプリングと、上記弁体と
受圧部との間の弁ハウジングに形成され上記圧油
源に連通する作動油入口と、上記弁体と鉄芯との
間の弁ハウジングに形成され上記油圧装置に連通
する作動油出口と、上記弁体の閉止時に同弁体の
円錐状シール面から漏洩した作動油を外部に排除
するリーク通路と、上記油圧装置の作動時に上記
スプリングの付勢力に抗して上記鉄芯を介し弁体
を開動させると共に同鉄芯により上記リーク通路
を閉塞する電磁コイルとから構成されたことを特
徴とする電磁弁を要旨とするものである。(Means for solving the problem) The present invention was devised to achieve the above object, and operates by using a pressure oil source such as an oil pump and hydraulic oil supplied from the pressure oil source. A hydraulic device such as a hydraulic cylinder, a valve housing interposed in a hydraulic oil passage connecting the pressure oil source and the hydraulic device, and a valve housing disposed within the valve housing to connect the pressure oil source and the hydraulic device. a conical valve body that communicates with or blocks communication; a pressure receiving part disposed at one end of the valve shaft of the valve body and housed in the valve housing to receive hydraulic pressure from the pressure oil source; and the valve shaft. An iron core disposed at the other end, a spring that comes into elastic contact with the valve shaft and urges the valve body in a closing direction, and a valve housing formed between the valve body and the pressure receiving part. A hydraulic oil inlet communicating with the pressure oil source, a hydraulic oil outlet formed in the valve housing between the valve body and the iron core and communicating with the hydraulic device, and a conical shape of the valve body when the valve body is closed. A leak passage for discharging hydraulic oil leaked from the sealing surface to the outside, and a valve body that opens the valve body through the iron core against the biasing force of the spring when the hydraulic system is operated, and the leak passage is closed by the iron core. The gist of the present invention is a solenoid valve characterized in that it is composed of a closed electromagnetic coil.
（作用）
本考案によれば、上記円錐状弁体と弁座との間
のシール面からの高圧作動油の僅かな漏洩を許容
することによつて、弁体及び弁座の加工精度を製
造コスト上合理的な程度に下げることができる。
上記シール面から僅かに漏洩した作動油は、上記
弁軸に固着された鉄芯と、上記電磁コイルを収容
するコイルハウジングとに設けられたリーク通路
を経て外部に排除されるので、油圧装置内の作動
油圧力が不当に高くなることがなく、誤作動等が
確実に防止される。(Function) According to the present invention, machining accuracy of the valve body and valve seat can be improved by allowing a slight leakage of high-pressure hydraulic oil from the sealing surface between the conical valve body and the valve seat. The cost can be reduced to a reasonable level.
A small amount of hydraulic oil leaking from the sealing surface is discharged to the outside through a leak passage provided in the iron core fixed to the valve stem and the coil housing that houses the electromagnetic coil, so that it is removed from the hydraulic system. Hydraulic oil pressure will not become unreasonably high, and malfunctions will be reliably prevented.
（実施例）
以下本考案の実施例を添付図面について具体的
に説明する。図中符号１０は総括的に電磁弁を示
し、同電磁弁は、オイルポンプのような圧油源１
２に連通する作動油入口１４と、カムＣによつて
駆動されるプランジヤ又はピストンを有する油圧
シリンダのような油圧装置１６に連通する作動油
出口１８と、截頭円錐状のシート面からなる弁座
２０を形成した弁孔２２とを具えた弁ハウジング
２４を有する。上記弁孔２２内に、弁座２０と協
働する截頭円錐状のシール面を具え、かつステン
レス鋼のような非磁性材料で作られた弁体２６が
装入され、その弁軸２８の一端部に円板状をなす
受圧部３０が形成され、かつ他端部には鉄芯３２
が螺合固着されている。(Example) Examples of the present invention will be specifically described below with reference to the accompanying drawings. The reference numeral 10 in the figure generally indicates a solenoid valve, and the solenoid valve is a pressure oil source 1 such as an oil pump.
2, a hydraulic oil outlet 18 communicating with a hydraulic device 16, such as a hydraulic cylinder having a plunger or piston driven by a cam C, and a frusto-conical seat surface. It has a valve housing 24 with a valve hole 22 defining a seat 20. A valve body 26 made of a non-magnetic material such as stainless steel and having a frusto-conical sealing surface cooperating with the valve seat 20 is inserted into the valve hole 22, and the valve body 26 is made of a non-magnetic material such as stainless steel. A disk-shaped pressure receiving part 30 is formed at one end, and an iron core 32 is formed at the other end.
are screwed together.
また鉄芯３２を囲んで電磁コイル３４が配設さ
れ、同電磁コイル３４は、上記弁ハウジング２４
の一端に螺合されたコイルハウジング３６内に収
容され、同ハウジングの端板３８と、上記鉄芯３
２との間に、スプリング４０が縮設されている。
更に上記鉄芯３２には、その円筒状外周面の一部
を軸線方向に延在した平面により切除することに
よつて、一端が弁体２６の下流側における弁孔２
２に連通し、他端が上記端板３８と鉄芯３２との
間の空所４２に連通する小断面積のリーク通路４
４が設けられている。 Further, an electromagnetic coil 34 is disposed surrounding the iron core 32, and the electromagnetic coil 34 is attached to the valve housing 24.
It is housed in a coil housing 36 screwed to one end, and an end plate 38 of the housing and the iron core 3 are connected to each other.
A spring 40 is compressed between 2 and 2.
Furthermore, by cutting a part of the cylindrical outer circumferential surface of the iron core 32 with a plane extending in the axial direction, one end is formed into the valve hole 2 on the downstream side of the valve body 26.
2, and the other end communicates with a space 42 between the end plate 38 and the iron core 32, and has a small cross-sectional area.
4 are provided.
また、上記端板３８には、空所４２をオイルリ
ザーバ４６に連通させるリーク通路４８が設けら
れている。なお、図中符号５０は、前記油圧装置
１６によつて駆動されるブレーキ装置、電気的ス
イツチ、或いは種々のロツク装置等任意の被動装
置、５２はバツテリ等の電源、５４は電源５２と
電磁コイル３４との間に介装されたスイツチであ
る。 Further, the end plate 38 is provided with a leak passage 48 that communicates the cavity 42 with the oil reservoir 46 . In the figure, reference numeral 50 indicates any driven device such as a brake device, an electric switch, or various lock devices driven by the hydraulic device 16, 52 indicates a power source such as a battery, and 54 indicates a power source 52 and an electromagnetic coil. This is a switch interposed between 34 and 34.
上記構成において、第１図はスイツチ５４が開
き電磁コイル３４が消勢されていて、弁体２６が
スプリング４０により弁座２０に圧接され、圧油
源１２に連通する作動油入口１４と、油圧装置１
６に連通する作動油出口１８とが遮断されている
態様を示している。既に述べたように圧油源１２
の圧力レベルが高い場合、弁体２６と弁座２０と
の間の面接触によつて十分な油密を確保すること
は困難であり、僅かの作動油の漏洩が発生するこ
とが多い。漏洩作動油が作動油出口１８からすべ
て油圧装置１６に供給されると、やがて同装置が
作動してブレーキ装置等の被動装置５０が作動さ
れ、好ましくない種々の不具合が発生する。 In the above configuration, FIG. 1 shows that the switch 54 is open and the electromagnetic coil 34 is deenergized, the valve body 26 is pressed against the valve seat 20 by the spring 40, and the hydraulic oil inlet 14 communicating with the pressure oil source 12 and the hydraulic Device 1
6 shows a mode in which the hydraulic oil outlet 18 communicating with the hydraulic oil outlet 18 is blocked. As already mentioned, the pressure oil source 12
When the pressure level is high, it is difficult to ensure sufficient oil tightness through surface contact between the valve body 26 and the valve seat 20, and a small amount of hydraulic oil often leaks. If all leaked hydraulic oil is supplied to the hydraulic system 16 from the hydraulic oil outlet 18, the system will eventually operate and the driven device 50 such as the brake system will be operated, causing various undesirable problems.
しかし、本考案によれば、上記弁座２０と弁体
２６のシール面から漏洩した僅少量の作動油がリ
ーク通路４４及びリーク通路４８を通つてオイル
リザーバ４６に排除されるので、弁座２０及び弁
体２６のシール面の加工精度が比較的低い通常グ
レードの安価な装置を用いても、油圧装置１６内
の作動油圧力が高まることがなく、確実に誤作動
を防止することができる利点がある。 However, according to the present invention, a small amount of hydraulic oil leaked from the sealing surface of the valve seat 20 and the valve body 26 is discharged into the oil reservoir 46 through the leak passage 44 and the leak passage 48. Even if a normal grade inexpensive device with relatively low machining accuracy of the sealing surface of the valve body 26 is used, the hydraulic fluid pressure in the hydraulic device 16 does not increase, and malfunctions can be reliably prevented. There is.
また本考案によれば、弁体２６が弁座２０に着
座している閉弁時に、弁軸２８の一端に設けられ
ている受圧部３０と弁体２６に作用する油圧力が
略相殺されるので、ばね定数が小さいスプリング
４８によつて十分な閉弁力即ち弁座２０に対する
弁体２６の圧接力を生起させることができる。こ
の結果、スプリング４８を克服して弁体２６を開
弁するために必要な電磁コイル３４の容量を小さ
くすることができ、電磁弁１０全体の占有スペー
ス、重量及び価額を低減し得る利点がある。 Further, according to the present invention, when the valve is closed when the valve body 26 is seated on the valve seat 20, the hydraulic pressures acting on the pressure receiving part 30 provided at one end of the valve shaft 28 and the valve body 26 are substantially canceled out. Therefore, the spring 48 having a small spring constant can generate a sufficient valve closing force, that is, a pressing force of the valve body 26 against the valve seat 20. As a result, the capacity of the electromagnetic coil 34 required to overcome the spring 48 and open the valve body 26 can be reduced, which has the advantage of reducing the space, weight, and cost of the entire electromagnetic valve 10. .
次に、油圧装置１６を作動させる場合には、ス
イツチ５４が手動で閉成され又は自動的に閉成さ
れて、電磁コイル３４が付勢される。電磁コイル
３４の付勢により、鉄芯３２がスプリング４８を
圧縮して右動し、上記のように弁体２６が開かれ
る。この結果、圧油源１２からの高圧作動油が作
動油入口１４から作動油出口１８を経て油圧装置
１６に大量に供給され、被動装置５０が駆動され
る。このとき、鉄芯３２の端面が対向する端板３
８に当接するので、リーク通路４４と４８との連
通が遮断され、弁体２６下流側の作動油が無為に
リーク通路４４及び４８から外部に流出すること
はない。従つて、通常の安価な電磁弁１０を用い
て安全に油圧装置１６を制御することができる。 Next, when the hydraulic system 16 is to be operated, the switch 54 is closed manually or automatically, and the electromagnetic coil 34 is energized. Due to the bias of the electromagnetic coil 34, the iron core 32 compresses the spring 48 and moves to the right, opening the valve body 26 as described above. As a result, a large amount of high-pressure hydraulic oil from the pressure oil source 12 is supplied to the hydraulic system 16 from the hydraulic oil inlet 14 through the hydraulic oil outlet 18, and the driven device 50 is driven. At this time, the end plate 3 where the end surface of the iron core 32 faces
8, communication between the leak passages 44 and 48 is cut off, and the hydraulic oil on the downstream side of the valve body 26 does not flow out from the leak passages 44 and 48 unnecessarily. Therefore, the hydraulic system 16 can be safely controlled using the ordinary, inexpensive solenoid valve 10.
なお、上記実施例では、鉄芯３２の外周面にリ
ーク通路４４が設けられているが、勿論弁軸２８
内に軸線方向に延在したリーク通路を設けてもよ
く、この場合端板３８側のリーク通路４８は、鉄
芯３２が右動したときその端面によつて閉塞され
る位置に設けられる。 In the above embodiment, the leak passage 44 is provided on the outer circumferential surface of the iron core 32;
A leak passage extending in the axial direction may be provided therein, and in this case, the leak passage 48 on the end plate 38 side is provided at a position where it is closed by the end surface when the iron core 32 moves to the right.
（考案の効果）
叙上のように、本考案に係る電磁弁は、オイル
ポンプのような圧油源と、上記圧油源から作動油
が供給されて作動する油圧シリンダのような油圧
装置と、上記圧油源と油圧装置とを連結する作動
油通路内に介装された弁ハウジングと、上記弁ハ
ウジング内に配設され上記圧油源と油圧装置とを
連通させ又は遮断する円錐状の弁体と、同弁体の
弁軸の一端に配設されて上記弁ハウジング内に収
容され上記圧油源からの作動油圧力を受ける受圧
部と、上記弁軸の他端に配設された鉄芯と、上記
弁軸に弾性的に当接され上記弁体を閉方向に付勢
するスプリングと、上記弁体と受圧部との間の弁
ハウジングに形成され上記圧油源に連通する作動
油入口と、上記弁体と鉄芯との間の弁ハウジング
に形成され上記油圧装置に連通する作動油出口
と、上記弁体の閉止時に同弁体の円錐状シール面
から漏洩した作動油を外部に排除するリーク通路
と、上記油圧装置の作動時に上記スプリングの付
勢力に抗して上記鉄芯を介し弁体を開動させると
共に、同鉄芯により上記リーク通路を閉塞する電
磁コイルとから構成されたことを特徴とし、小型
軽量で、弁シール面の加工精度が比較的低く、従
つて安価な電磁弁を利用して高圧作動油によつて
作動する油圧応動装置を、安全に誤作動を起すこ
となく作動させることができるので、実用上有益
である。(Effect of the invention) As described above, the solenoid valve according to the invention can be used with a pressure oil source such as an oil pump and a hydraulic device such as a hydraulic cylinder that is operated by being supplied with hydraulic oil from the pressure oil source. , a valve housing interposed in a hydraulic oil passage connecting the pressure oil source and the hydraulic device; and a conical valve disposed in the valve housing to connect or cut off communication between the pressure oil source and the hydraulic device. a valve body, a pressure receiving part disposed at one end of the valve shaft of the valve body, housed in the valve housing, and receiving hydraulic pressure from the pressure oil source; and a pressure receiving part disposed at the other end of the valve shaft. an iron core, a spring that elastically abuts the valve shaft and biases the valve body in the closing direction, and an actuation that is formed in the valve housing between the valve body and the pressure receiving part and communicates with the pressure oil source. An oil inlet, a hydraulic oil outlet formed in the valve housing between the valve body and the iron core and communicating with the hydraulic device, and a hydraulic oil outlet that is configured to remove hydraulic oil leaked from the conical sealing surface of the valve body when the valve body is closed. Consisting of a leak passage to be discharged to the outside, and an electromagnetic coil that opens the valve body through the iron core against the biasing force of the spring when the hydraulic system is activated, and closes the leak passage with the iron core. It is characterized by its small size and light weight, and the processing accuracy of the valve seal surface is relatively low. Therefore, it uses an inexpensive solenoid valve to safely prevent malfunction of a hydraulic response device operated by high-pressure hydraulic oil. This is useful in practice because it can be operated without causing any problems.
第１図は本考案の一実施例を示す概略構成図、
第２図は第１図における弁体及び鉄芯部分を抽出
して示した斜視図である。
１０……電磁弁、１２……圧油源、１４……作
動油入口、１６……油圧装置、１８……作動油出
口、２０……弁座、２４……弁ハウジング、２６
……弁体、２８……弁軸、３０……受圧部、３２
……鉄芯、３４……電磁コイル、３６……スプリ
ング、４４及び４８……リーク通路。
FIG. 1 is a schematic configuration diagram showing an embodiment of the present invention;
FIG. 2 is a perspective view showing the valve body and iron core portion extracted from FIG. 1. 10... Solenoid valve, 12... Pressure oil source, 14... Hydraulic oil inlet, 16... Hydraulic system, 18... Hydraulic oil outlet, 20... Valve seat, 24... Valve housing, 26
... Valve body, 28 ... Valve shaft, 30 ... Pressure receiving part, 32
...Iron core, 34...Electromagnetic coil, 36...Spring, 44 and 48...Leak passage.
Claims (1)
ら作動油が供給されて作動する油圧シリンダのよ
うな油圧装置と、上記圧油源と油圧装置とを連結
する作動油通路内に介装された弁ハウジングと、
上記弁ハウジング内に配設され上記圧油源と油圧
装置とを連通させ又は遮断する円錐状の弁体と、
同弁体の弁軸の一端に配設されて上記弁ハウジン
グ内に収容され上記圧油源からの作動油圧力を受
ける受圧部と、上記弁軸の他端に配設された鉄芯
と、上記弁軸に弾性的に当接され上記弁体を閉方
向に付勢するスプリングと、上記弁体と受圧部と
の間の弁ハウジングに形成され上記圧油源に連通
する作動油入口と、上記弁体と鉄芯との間の弁ハ
ウジングに形成され上記油圧装置に連通する作動
油出口と、上記弁体の閉止時に同弁体の円錐状シ
ール面から漏洩した作動油を外部に排除するリー
ク通路と、上記油圧装置の作動時に上記スプリン
グの付勢力に抗して上記鉄芯を介し弁体を開動さ
せると共に同鉄芯により上記リーク通路を閉塞す
る電磁コイルとから構成されたことを特徴とする
電磁弁。 A pressure oil source such as an oil pump, a hydraulic device such as a hydraulic cylinder that is operated by being supplied with hydraulic oil from the pressure oil source, and a hydraulic oil passage that connects the pressure oil source and the hydraulic device. a valve housing,
a conical valve body disposed within the valve housing and communicating or blocking communication between the pressure oil source and the hydraulic device;
a pressure receiving part disposed at one end of the valve shaft of the valve body, housed in the valve housing, and receiving hydraulic oil pressure from the pressure oil source; and an iron core disposed at the other end of the valve shaft; a spring that elastically abuts the valve shaft and urges the valve body in a closing direction; a hydraulic oil inlet that is formed in the valve housing between the valve body and the pressure receiving part and communicates with the pressure oil source; A hydraulic oil outlet is formed in the valve housing between the valve body and the iron core and communicates with the hydraulic device, and hydraulic oil leaked from the conical sealing surface of the valve body when the valve body is closed is discharged to the outside. It is characterized by comprising a leak passage, and an electromagnetic coil that opens the valve body through the iron core against the biasing force of the spring when the hydraulic system is activated, and closes the leak passage with the iron core. Solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986107641U JPH0446154Y2 (en) | 1986-07-14 | 1986-07-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986107641U JPH0446154Y2 (en) | 1986-07-14 | 1986-07-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6314072U JPS6314072U (en) | 1988-01-29 |
| JPH0446154Y2 true JPH0446154Y2 (en) | 1992-10-29 |
Family
ID=30984110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986107641U Expired JPH0446154Y2 (en) | 1986-07-14 | 1986-07-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0446154Y2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4915532U (en) * | 1972-05-13 | 1974-02-08 |
-
1986
- 1986-07-14 JP JP1986107641U patent/JPH0446154Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6314072U (en) | 1988-01-29 |
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