JPH0515180Y2 - - Google Patents
Info
- Publication number
- JPH0515180Y2 JPH0515180Y2 JP1988123463U JP12346388U JPH0515180Y2 JP H0515180 Y2 JPH0515180 Y2 JP H0515180Y2 JP 1988123463 U JP1988123463 U JP 1988123463U JP 12346388 U JP12346388 U JP 12346388U JP H0515180 Y2 JPH0515180 Y2 JP H0515180Y2
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- increased diameter
- diameter portion
- piston
- annular member
- 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 - Lifetime
Links
- 238000007789 sealing Methods 0.000 claims description 26
- 239000012530 fluid Substances 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 239000007788 liquid Substances 0.000 description 6
- 230000004323 axial length Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Landscapes
- Transmission Of Braking Force In Braking Systems (AREA)
- Braking Systems And Boosters (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、車両等で用いられるマスタシリンダ
に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a master cylinder used in vehicles and the like.
ピストン軸部がシリンダ孔開口の増径部に設け
られた密封装置を貫通して外部に延びるマスタシ
リンダとしては、従来、実開昭62−179867号公報
に示されたものがある。
A conventional master cylinder in which the piston shaft extends outward through a sealing device provided at the enlarged diameter portion of the cylinder hole opening is disclosed in Japanese Utility Model Application Publication No. 179867/1986.
この密封装置は、カツプシールの如き密封部材
と該密封部材を押える環状部材とからなり、この
環状部材を増径部内に挿入しその外周面を増径部
内面により支持させて、Ｃリングを環状部材のシ
リンダ開口側端部に当接させるとともに増径部内
面の溝に係合させ、このＣリングを止め環として
全体が抜け止めされている。 This sealing device consists of a sealing member such as a cup seal and an annular member that presses the sealing member.The annular member is inserted into the increased diameter part, its outer peripheral surface is supported by the inner surface of the increased diameter part, and the C-ring is inserted into the annular member. The C-ring is brought into contact with the open end of the cylinder and engaged with a groove on the inner surface of the increased diameter part, and the C-ring is used as a retaining ring to prevent the entire assembly from coming off.
ところが、こうしたものにおいては、増径部内
にＣリングを装着するための所定長さを必ず確保
しなければならないことから、シリンダの短縮化
を図る上で増径部の長さも短くしようとすると、
自ずと環状部材の外周面の軸方向長さが短くなつ
てしまうため、増径部による環状部材の支持の安
定度が低下して、ピストンの摺動案内が不安定に
なるという問題がある。
However, in these types of cylinders, it is necessary to ensure a certain length for installing the C-ring inside the increased diameter part, so if you try to shorten the length of the increased diameter part in order to shorten the cylinder,
Since the axial length of the outer circumferential surface of the annular member naturally becomes shorter, the stability of supporting the annular member by the diameter-increasing portion decreases, resulting in a problem that sliding guidance of the piston becomes unstable.
また、Ｃリングを装着するには、これを縮径さ
せる工具を用いて作業を行なう必要があることか
ら、密封装置を組み付ける作業効率が悪くなると
いつた問題もある。 Furthermore, since it is necessary to use a tool to reduce the diameter of the C-ring in order to install it, there is a problem in that the efficiency of assembling the sealing device is reduced.
本考案は、上記問題を解消するためになされた
ものであつて、シリンダの短縮化を阻害すること
なく環状部材の安定度を維持してピストンの摺動
案内を良好ならしめるとともに、密封装置の組み
付け作業を簡単に行なえるマスタシリンダを提供
することを目的とする。 The present invention was developed to solve the above problems, and it maintains the stability of the annular member without hindering the shortening of the cylinder, improves the sliding guidance of the piston, and improves the sealing device. The purpose is to provide a master cylinder that allows easy assembly work.
本考案は上記問題を解決するため、環状部材に
は、そのシリンダ外部側に内周部と外周部との間
に位置する周方向の溝と、この溝から外周部に向
かつて延びる径方向の溝とを形成し、抜け止め
を、前記周方向の溝に嵌まり込む基部と、この基
部から前記径方向の溝内でシリンダ孔の増径部に
向かつて延び先端がその増径部の壁面に係合する
弾性変形可能な係合部を有する形状としたもので
る。
In order to solve the above problem, the present invention has a circumferential groove located on the outside of the cylinder between the inner circumference and the outer circumference, and a radial groove extending from this groove toward the outer circumference. a base portion that fits into the circumferential groove; and a base portion that extends from the base portion within the radial groove toward the increased diameter portion of the cylinder hole, and has a distal end that extends from the wall surface of the increased diameter portion. It has a shape having an elastically deformable engagement portion that engages with.
抜止めの装着位置が環状部材外周面が増径部壁
面に周接する部位にオーバーラツプした位置とな
つて、環状部材及び抜止めの装着に必要な長さが
環状部材の外周面の軸方向長さになり、環状部材
外周面の軸方向長さを長くすることができる。
The mounting position of the retainer is the position where the outer circumferential surface of the annular member overlaps the area where the outer circumferential surface of the annular member contacts the wall surface of the increased diameter part, and the length required for attaching the annular member and the retainer is the axial length of the outer circumferential surface of the annular member. Therefore, the axial length of the outer peripheral surface of the annular member can be increased.
また、抜止めは、増径部内に押し込めば、係合
部先端が増径部壁面に係合するので、従来のよう
な縮径作業を不要にして装着することができる。 Further, when the retainer is pushed into the increased diameter portion, the tip of the engaging portion engages with the wall surface of the increased diameter portion, so that the retainer can be installed without the need for the conventional diameter reduction work.
以下、本考案の一実施例を図面を参照して説明
する。
An embodiment of the present invention will be described below with reference to the drawings.
第１図において、１はマスタシリンダのシリン
ダ本体であつて、内部には、一端に開口するシリ
ンダ孔２を有し、外周には、ボス部３，４が突出
形成され、このボス部３，４の内孔に作動液リザ
ーバ５の本体６の下面から突出する接続口７，８
が密封部材９，１０を介在して圧入されている。
リザーバ５は本体６にピン６ａを介して抜止めれ
れているシリンダ孔２の開口部は他部１１と段部
１２を介して増径した増径部１３となつており、
このシリンダ孔２内には、従ピストン１４と主ピ
ストン１５とが、前者をシリンダ孔底１６側にし
て摺動自在に挿入されている。従ピストン１４は
前端に開口する深い凹部１７を有し、この凹部１
７の底に一部を収納され一端がシリンダ孔底１６
に係合する戻しばね１８により主ピストン１５側
に付勢されてシリンダ孔底１６との間に従圧力室
Ｘを区画し、側周に形成された摺動部１９と２０
とで、シリンダ孔２内周面との間に液補給室Ａを
区画している。摺動部１９前面に隣接して密封部
材２１が、また、摺動部２０の後面に隣接して密
封部材２２が従ピストン１４に嵌着されている。
従圧力室Ｘは、マスタシリンダの非作動時には、
シリンダ壁に形成された弛め孔２３を通してホス
部３内に連通し、液補給室Ａはシリンダ壁に形成
された通孔２４を通して、常時、ボス部３内に連
通する。シリンダ本体１のシリンダ孔底１６近く
には吐出口２５が開口している。主ピストン１５
は、戻しばね２６により開口側へ付勢されて、摺
動部２７を有する前端部で従ピストン１４との間
に主圧力室Ｙを区画しており、後端側（軸部）１
５Ａは増径部１３に収納されている密封装置３４
を密に貫通して外部に伸び、摺動部１３と密封装
置３４との間にスペーサ３７を介在して液補給室
Ｂを区画している。摺動部２７の前面に隣接して
密封部材２８が嵌着されている。シリンダ本体１
にはボス部４の内孔の側部に開口して本体軸方向
に伸び、段部１２に開口する液補給路２９が形成
されており、この液補給路２９途中から主圧力室
Ｙに向かう弛め孔３０が形成されている。３０ａ
は通路形成用開口をふさいぐ栓である。戻しばね
２６は一端が主ピストン１５に形成された周突起
３１に、他端が、従ピストン１４の後端部に当接
されたリテーナ３２に係合しており、該リテーナ
３２、リテーナ３２を遊貫して主ピストン１５の
前端面に螺入されたボルト３３とによりゲージド
スプリング装置を構成している。 In FIG. 1, reference numeral 1 denotes a cylinder body of a master cylinder, which has a cylinder hole 2 that opens at one end inside, and has boss parts 3 and 4 protruding from its outer periphery. Connection ports 7 and 8 protrude from the lower surface of the main body 6 of the hydraulic fluid reservoir 5 into the inner hole of 4.
are press-fitted with sealing members 9 and 10 interposed therebetween.
The reservoir 5 is secured to the main body 6 through a pin 6a, and the opening of the cylinder hole 2 is an increased diameter portion 13 which is increased in diameter through another portion 11 and a stepped portion 12.
A slave piston 14 and a main piston 15 are slidably inserted into the cylinder hole 2 with the former facing toward the bottom 16 of the cylinder hole. The slave piston 14 has a deep recess 17 that opens at the front end, and this recess 1
7 is partially stored in the bottom of the cylinder hole 16, and one end is located at the bottom of the cylinder hole 16.
is urged toward the main piston 15 side by a return spring 18 that engages with the cylinder hole bottom 16 to define a slave pressure chamber
A liquid supply chamber A is defined between the cylinder hole 2 and the inner circumferential surface of the cylinder hole 2. A sealing member 21 is fitted adjacent to the front surface of the sliding portion 19, and a sealing member 22 is fitted to the slave piston 14 adjacent to the rear surface of the sliding portion 20.
When the master cylinder is not operating, the slave pressure chamber X is
It communicates with the inside of the host part 3 through a loosening hole 23 formed in the cylinder wall, and the liquid supply chamber A always communicates with the inside of the boss part 3 through a through hole 24 formed in the cylinder wall. A discharge port 25 is opened near the cylinder hole bottom 16 of the cylinder body 1. Main piston 15
is biased toward the opening side by a return spring 26, and defines a main pressure chamber Y between the slave piston 14 at the front end having a sliding portion 27, and the rear end side (shaft portion) 1
5A is a sealing device 34 housed in the increased diameter part 13
A spacer 37 is interposed between the sliding portion 13 and the sealing device 34 to define a liquid supply chamber B. A sealing member 28 is fitted adjacent to the front surface of the sliding portion 27. Cylinder body 1
A liquid supply path 29 is formed in the inner hole of the boss portion 4, extending in the axial direction of the main body, and opening in the stepped portion 12. A loosening hole 30 is formed. 30a
is a stopper that closes the passage forming opening. The return spring 26 has one end engaged with a circumferential protrusion 31 formed on the main piston 15 and the other end engaged with a retainer 32 that is in contact with the rear end of the slave piston 14. A gauged spring device is constituted by a bolt 33 loosely inserted and screwed into the front end surface of the main piston 15.
上記密封装置３４は、密封部材３５と環状部材
３６からなり、段部１２の面の間にスペーサ３７
を介在して増径部１３に嵌合され、抜止め３８に
より増径部１３内に固定されている。環状部材３
５は、その外面に、第２図に示す如く、内周部３
９を残して形成された所定幅・所定溝深さの環状
溝４０と、この環状溝４０から同一溝深さで半径
方向に伸び外周部４１を横断して周面に達する複
数本の所定幅の溝４２を有している。こうした抜
止め３８は、環状部材３５の各溝４１，４２に整
合させて増径部１３内に押し込めば、係合部４４
が弾性変形して増径部１３内に侵入した後、その
先端の係止片部４４ａが周溝２ａに嵌まることに
より装着が完了する。抜止め３８は、第３図ａに
示すように、上記環状溝４０に嵌合する環状の基
部４３と、この基部４３から半径方向に伸び上記
溝４２にそれぞれ嵌合する係合部４４からなる形
状を有し、係合部４４の先端は、第３図ｂに示す
ように、外側へ折曲された係止弁部４４ａとなつ
ており、係止片部４４ａをシリンダ孔２の開口端
内周に形成した周溝２ａに係合して止められてい
る。 The sealing device 34 includes a sealing member 35 and an annular member 36, and a spacer 37 is provided between the surfaces of the stepped portion 12.
It is fitted into the increased diameter portion 13 with the diaphragm interposed therebetween, and is fixed within the increased diameter portion 13 by a retainer 38 . Annular member 3
5 has an inner peripheral portion 3 on its outer surface as shown in FIG.
An annular groove 40 having a predetermined width and a predetermined groove depth is formed leaving the annular groove 40, and a plurality of predetermined widths extending from the annular groove 40 in the radial direction at the same groove depth and crossing the outer circumferential portion 41 to reach the circumferential surface. It has a groove 42 of. If the retainer 38 is aligned with the grooves 41 and 42 of the annular member 35 and pushed into the increased diameter portion 13, the engagement portion 44
After it is elastically deformed and enters the increased diameter portion 13, the locking piece 44a at the tip fits into the circumferential groove 2a, thereby completing the installation. As shown in FIG. 3a, the retainer 38 includes an annular base 43 that fits into the annular groove 40, and engaging parts 44 that extend radially from the base 43 and fit into the grooves 42, respectively. As shown in FIG. 3b, the tip of the engaging portion 44 is a locking valve portion 44a that is bent outward, and the locking piece 44a is connected to the open end of the cylinder hole 2. It is engaged and fixed in a circumferential groove 2a formed on the inner periphery.
このマスタシリンダの動作は良く知られている
ので、以下に、簡単に説明する。 Since the operation of this master cylinder is well known, it will be briefly explained below.
運転手のペダル踏み込みにより、プンシユロツ
ドを介して主ピストン１５に図示矢印方向の押力
が伝達されると、ピストン１５は左動し、密封部
材２８が弛め孔３０を閉鎖すると、主圧力室Ｙ内
に液圧が発生し始める。主ピストン１５が左動す
ると、この左方移動がケージドスプリング装置を
通して従ピストン１４に伝達され、従ピストン１
４も左動する。従ピストン１４の左動により弛め
孔２３が密封部材２１で閉鎖されると従圧力室Ｘ
も液圧が発生し始める。さらなる主ピストン１５
の左方移動により従ピストン１４も左動して、圧
力室Ｙ、圧力室Ｘ内の液圧が増大する。従圧力室
Ｘに発生した液圧は吐出口２５から吐出され、ま
た、主圧力室に発生した液圧は図示しない吐出か
ら吐出され、配管を通してブレーキシリンダへ供
給される。ブレーキペダルが解放されると、従ピ
ストン１４、主ピストン１５はそれぞれ戻しばね
１８，２７の作用よつて元の位置に復帰する。こ
の時、従圧力室Ｘには液補給室Ａから密封部材２
１とシリンダ孔２内周との間を通して、また、主
圧力室Ｙには、液補給室Ｂから密封材２８とシリ
ンダ孔２内周との間を通して、作動液が補給され
る。 When the driver depresses the pedal, a pushing force in the direction of the arrow shown in the figure is transmitted to the main piston 15 via the punch rod, the piston 15 moves to the left, and when the sealing member 28 closes the loosening hole 30, the main pressure chamber Y Hydraulic pressure begins to build up inside. When the main piston 15 moves to the left, this leftward movement is transmitted to the slave piston 14 through the caged spring device, and the slave piston 1
4 also moves to the left. When the loosening hole 23 is closed by the sealing member 21 due to leftward movement of the slave piston 14, the slave pressure chamber
Also, hydraulic pressure begins to be generated. Further main piston 15
Due to the leftward movement of the slave piston 14, the slave piston 14 also moves to the left, and the hydraulic pressures in the pressure chambers Y and X increase. The hydraulic pressure generated in the secondary pressure chamber X is discharged from the discharge port 25, and the hydraulic pressure generated in the main pressure chamber is discharged from a discharge outlet (not shown), and is supplied to the brake cylinder through piping. When the brake pedal is released, the slave piston 14 and the main piston 15 return to their original positions by the action of return springs 18 and 27, respectively. At this time, the liquid supply chamber A is connected to the slave pressure chamber X by the sealing member 2.
1 and the inner circumference of the cylinder hole 2, and the main pressure chamber Y is supplied with hydraulic fluid from the liquid supply chamber B through between the sealing material 28 and the inner circumference of the cylinder hole 2.
本実施例の環状部材３６は、その片面に、抜止
め３８が嵌まり合う形状であり、抜止め３８のシ
リンダ孔２の内周に係合する部分４４ａは環状部
材３６の外周部４１を横断して延びる係合部４４
の先端に形成されているので、環状部材３６の外
周部４１は内周部３９と同じ板厚を持たせること
ができる。このため、環状部材３６のシリンダ孔
２の増径部１３内周面と接する部分の幅（環状部
材３６の外周面の軸方向長さ）が、従来の環状部
材の長さに抜止めの厚みを加えた長さに相当する
ように大きくなるので、増径部１３に対する嵌合
の安定度が高くなる。 The annular member 36 of this embodiment has a shape in which a retainer 38 is fitted on one side thereof, and a portion 44a of the retainer 38 that engages with the inner periphery of the cylinder hole 2 crosses the outer periphery 41 of the annular member 36. An engaging portion 44 that extends
, the outer circumference 41 of the annular member 36 can have the same thickness as the inner circumference 39 . For this reason, the width of the portion of the annular member 36 in contact with the inner circumferential surface of the increased diameter portion 13 of the cylinder hole 2 (the axial length of the outer circumferential surface of the annular member 36) is the same as the length of the conventional annular member and the thickness of the retainer. Since the length increases to correspond to the sum of the length, the stability of fitting to the increased diameter portion 13 becomes high.
なお、本実施例における作動液リザーバ５で
は、ダイヤフラム５０の底５０Ａが本体６内に注
入される作動液の最高注入面MAXに位置するよ
うにして、キヤツプ６Ａの高さを低くし、内部空
気量が少なくなるようにしてある。 In addition, in the hydraulic fluid reservoir 5 in this embodiment, the bottom 50A of the diaphragm 50 is located at the highest injection surface MAX of the hydraulic fluid injected into the main body 6, and the height of the cap 6A is lowered to prevent internal air from flowing. The amount is kept small.
本考案は以上説明した通り、シリンダ孔開口の
密封部材を押える環状部材の軸方向長さを従来に
比して大きくすることができるので、倒れやねじ
れを生じさせないようにシリンダ孔内で充分に安
定させることができ、従つて、ピストンの軸部を
良好に摺案内することができる。また、抜止めの
装着作業を簡単にして、密封装置の組み付けのた
めの作業効率を向上させることができる。
As explained above, in the present invention, the axial length of the annular member that presses down the sealing member of the cylinder hole opening can be made larger than that of the conventional one, so that it can be placed inside the cylinder hole sufficiently to prevent it from collapsing or twisting. It can be stabilized, and therefore the shaft portion of the piston can be smoothly guided. Furthermore, the work of installing the retainer can be simplified, and the work efficiency for assembling the sealing device can be improved.
第１図は本考案の実施例を示す断面図、第２図
は上記実施例の環状部材き片面を示す図、第３図
ａは上記実施例における抜止めの平面、第３図ｂ
は第３図ａにおける−矢視図である。
１……シリンダ本体、２……シリンダ孔、３，
４……ボス部、５……作動液リザーバ、１２……
段部、１３……増径部、１５……ピストン、１５
Ａ……軸部、３５……密封部材、３６……環状部
材、３８……抜止め、４０……周方向の溝、４２
……径方向の溝、４３……基部、４４……係合
部、４４ａ……係合片部。
Fig. 1 is a sectional view showing an embodiment of the present invention, Fig. 2 is a view showing one side of the annular member of the above embodiment, Fig. 3a is a plane of the retainer in the above embodiment, Fig. 3b
is a view taken along the - arrow in FIG. 3a. 1...Cylinder body, 2...Cylinder hole, 3,
4...Boss part, 5...Hydraulic fluid reservoir, 12...
Stepped part, 13... Increased diameter part, 15... Piston, 15
A... Shaft portion, 35... Sealing member, 36... Annular member, 38... Retainer, 40... Circumferential groove, 42
...Radial groove, 43...Base, 44...Engaging portion, 44a...Engaging piece.
Claims (1)
ダ孔を有するシリンダ本体と、前記シリンダ孔に
摺動自在に嵌合する頭部及び前記増径部を貫通し
てシリンダ孔外部に突出する軸部を有するピスト
ンと、該ピストンにより前記シリンダ孔内に画成
された圧力室と、前記ピストンの軸部と前記増径
部との間に配置される密封装置と、該密封装置と
前記段部との間を作動液リザーバに連絡されるボ
ス部の内孔に連通させる通路と、前記ピストンの
動きに応じて前記ボス部の内孔と前記圧力室との
連通・遮断を行う弁装置とを備え、前記密封装置
が、前記軸部と前記増径部との間を密封する密封
部材と、該密封部材のシリンダ孔外部側で前記増
径部に挿入されて外周面を当該増径部により支持
されるとともに内周面により前記軸部の摺動を案
内する環状部材と、該環状部材のシリンダ孔外部
側に設けられ前記環状部材と前記シリンダ本体と
に係合する抜止めとを有するマスタシリンダにお
いて、前記環状部材には、そのシリンダ外部側に
内周部と外周部との間に位置する周方向の溝と、
この溝から外周部に向かつて延びる径方向の溝と
を形成し、前記抜止めを、前記周方向の溝に嵌ま
り込む基部と、この基部から前記径方向の溝内で
前記増径部に向かつて延び先端が前記増径部の壁
面に係合する弾性変形可能な係合部とを有する形
状としたマスタシリンダ。 A cylinder body having a cylinder hole with an increased diameter portion formed in the opening via a step, a head that slidably fits into the cylinder hole, and a head that penetrates the increased diameter portion and projects to the outside of the cylinder hole. A piston having a shaft portion, a pressure chamber defined in the cylinder hole by the piston, a sealing device disposed between the shaft portion of the piston and the increasing diameter portion, and the sealing device and the step. a passage that communicates between the inner hole of the boss portion and the inner hole of the boss portion that is connected to the hydraulic fluid reservoir; and a valve device that communicates with and shuts off the inner hole of the boss portion and the pressure chamber according to the movement of the piston. The sealing device includes a sealing member that seals between the shaft portion and the increased diameter portion, and a sealing member that is inserted into the increased diameter portion on the outside of the cylinder hole of the sealing member so as to seal the outer peripheral surface of the increased diameter portion. an annular member that is supported by and guides the sliding movement of the shaft portion by an inner circumferential surface; and a retainer that is provided on the outside of the cylinder hole of the annular member and engages with the annular member and the cylinder body. In the master cylinder, the annular member includes a circumferential groove located between an inner peripheral part and an outer peripheral part on the outside of the cylinder;
A radial groove extending from the groove toward the outer circumferential portion is formed, and the retainer is provided with a base portion that fits into the circumferential groove, and a base portion that fits into the circumferential groove, and a base portion that extends from the base portion into the increased diameter portion within the radial groove. A master cylinder having a shape having an elastically deformable engaging portion extending toward the front and having a distal end engaging with a wall surface of the increased diameter portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988123463U JPH0515180Y2 (en) | 1988-09-22 | 1988-09-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988123463U JPH0515180Y2 (en) | 1988-09-22 | 1988-09-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0296249U JPH0296249U (en) | 1990-07-31 |
| JPH0515180Y2 true JPH0515180Y2 (en) | 1993-04-21 |
Family
ID=31372338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988123463U Expired - Lifetime JPH0515180Y2 (en) | 1988-09-22 | 1988-09-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0515180Y2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61183767U (en) * | 1985-05-10 | 1986-11-15 | ||
| JPS62178266U (en) * | 1986-05-06 | 1987-11-12 |
-
1988
- 1988-09-22 JP JP1988123463U patent/JPH0515180Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0296249U (en) | 1990-07-31 |
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