JPH0320569Y2 - - Google Patents
Info
- Publication number
- JPH0320569Y2 JPH0320569Y2 JP1984009986U JP998684U JPH0320569Y2 JP H0320569 Y2 JPH0320569 Y2 JP H0320569Y2 JP 1984009986 U JP1984009986 U JP 1984009986U JP 998684 U JP998684 U JP 998684U JP H0320569 Y2 JPH0320569 Y2 JP H0320569Y2
- Authority
- JP
- Japan
- Prior art keywords
- thrust plate
- flange
- outer diameter
- cylindrical body
- pin
- 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
- 239000000463 material Substances 0.000 description 17
- 229910000831 Steel Inorganic materials 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 10
- 239000010959 steel Substances 0.000 description 10
- 238000005520 cutting process Methods 0.000 description 9
- 239000002699 waste material Substances 0.000 description 5
- 239000002994 raw material Substances 0.000 description 4
- 238000005242 forging Methods 0.000 description 3
- 230000007774 longterm Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
- F16C11/045—Pivotal connections with at least a pair of arms pivoting relatively to at least one other arm, all arms being mounted on one pin
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2350/00—Machines or articles related to building
- F16C2350/26—Excavators
Landscapes
- Component Parts Of Construction Machinery (AREA)
- Pivots And Pivotal Connections (AREA)
Description
【考案の詳細な説明】
産業上の利用分野
この考案は、主として油圧シヨベルなど建設機
械のピン連結部におけるピン装置に関する。[Detailed Description of the Invention] Industrial Application Field This invention mainly relates to a pin device in a pin connection part of a construction machine such as a hydraulic excavator.
従来の技術
第５図は、油圧シヨベル（図示しない）のフロ
ント部に装着した作業アタツチメント１の側面図
である。図において、２はブーム、３はアーム、
４はバケツト、５，６はそれぞれピン連結部であ
る。第６図は、第５図におけるピン連結部６のＡ
−Ａ断面図である。図において、７はバケツト４
のブラケツト、８はアーム３先端部のボス、９，
１０はブラケツト７、ボス８のそれぞれブツシユ
穴、１１，１２はブツシユ穴９，１０にそれぞれ
嵌挿したつば付きブツシユ、１３，１４はそれぞ
れつば付きブツシユ１１，１２のつば部、１５は
ピン、１６はピン１５をブラケツト７に係止して
いる係止部、１７，１８はそれぞれシール部材で
ある。BACKGROUND ART FIG. 5 is a side view of a work attachment 1 attached to the front part of a hydraulic excavator (not shown). In the figure, 2 is a boom, 3 is an arm,
4 is a bucket, and 5 and 6 are pin connection parts. FIG. 6 shows A of the pin connecting portion 6 in FIG.
-A sectional view. In the figure, 7 is bucket 4
bracket, 8 is the boss at the tip of arm 3, 9,
10 is the bushing hole of the bracket 7 and boss 8, respectively; 11 and 12 are the bushes with flange inserted into the bushing holes 9 and 10, respectively; 13 and 14 are the flange portions of the bushes 11 and 12, respectively; 15 is the pin; 16 1 is a locking portion that locks the pin 15 to the bracket 7, and 17 and 18 are seal members, respectively.
次に、従来技術のピン連結部６を第６図につい
て述べる。ブラケツト７とボス８のそれぞれブツ
シユ穴９，１０には、つば付きブツシユ１１，１
２が、そのそれぞれつば部１３，１４の端面を相
対するように、嵌挿されている。そしてブラケツ
ト７とボス８は、ピン１５を介して回動可能に連
結されている。 Next, a prior art pin connection section 6 will be described with reference to FIG. In the bushing holes 9 and 10 of the bracket 7 and boss 8, respectively, there are bushings 11 and 1 with flanges.
2 are fitted and inserted so that the end surfaces of the respective brim portions 13 and 14 face each other. The bracket 7 and the boss 8 are rotatably connected via a pin 15.
考案が解決しようとする課題
油圧シヨベルが掘削作業を行うときには、作業
アタツチメントのピン連結部に対して大なる衝撃
力が作用する。それでピン連結部には、ピン軸心
方向のスラスト荷重も作用する。一般にブラケツ
トとボスの材料には、溶接性の良い鋼材が使用さ
れている。その鋼材は比較的軟質であるので、ブ
ラケツトとボスのそれぞれブツシユ穴にはつば付
きブツシユを嵌挿して、そのつば付きブツシユの
それぞれつば部の端面を相対せしめるようにして
いる。上記つば部の端面は焼入処理を施工され高
い硬度を有しているので、ブラケツトとボスの相
互回動による早期摩耗が防止される。Problems to be Solved by the Invention When a hydraulic excavator performs excavation work, a large impact force acts on the pin connection portion of the work attachment. Therefore, a thrust load in the pin axis direction also acts on the pin connection portion. Generally, the bracket and boss are made of steel with good weldability. Since the steel material is relatively soft, bushes with flanges are inserted into the bushing holes of the bracket and the boss, respectively, so that the end surfaces of the flanged bushes face each other. Since the end face of the flange is hardened and has high hardness, early wear due to mutual rotation of the bracket and boss is prevented.
ところがつば付きブツシユのつば部の外径Ｄは
ボスの外径とほぼ同じ位の寸法にしているので、
つば付きブツシユの円筒部の外径ｄよりかなり大
径である。第７図は、つば付きブツシユを製作す
るときの粗材を示す断面図である。図において、
１９は丸棒鋼材の粗材、D′は粗材１９の外径、
Ｌは粗材１９の長さ、１１′は削に出しを行つて
形成されるつば付きブツシユ、１３′はつば付き
ブツシユ１１′のつば部、Ｄはつば部１３′の外
径、２０はつば付きブツシユ１１′の円筒部、ｄ
は円筒部２０の外径である。それで上記粗材１９
よりつば付きブツシユ１１′の削り出しを行うと
き、粗材の軸心部イや肩部ロは切削屑として処理
されていた。その粗材１９の材料ロスが大きいと
ともに、その切削加工費が高く無駄であつた。 However, since the outer diameter D of the brim of the bushing is approximately the same as the outer diameter of the boss,
The diameter is considerably larger than the outer diameter d of the cylindrical portion of the bush with a flange. FIG. 7 is a sectional view showing the raw material used to manufacture a bush with a flange. In the figure,
19 is the rough material of the round steel bar, D' is the outer diameter of the rough material 19,
L is the length of the rough material 19, 11' is the flange bushing formed by machining, 13' is the flange of the flange bush 11', D is the outer diameter of the flange 13', and 20 is the flange. The cylindrical part of the bushing 11', d
is the outer diameter of the cylindrical portion 20. So the above rough material 19
When machining the twisted bush 11', the axial center part A and the shoulder part B of the rough material were disposed of as cutting waste. The material loss of the rough material 19 was large, and the cost of cutting it was high and wasted.
また、つば付きブツシユの粗材を型打鍛造にて
得ようとすると、鍛造用熱処理費と鍛造用金型の
製作費が高かつた。 In addition, when trying to obtain the raw material for the bushings with a brim by die forging, the cost of heat treatment for forging and the cost of manufacturing a forging die were high.
この考案は上記の課題を解決し、低廉な費用で
製作できるつば付きブツシユをそなえたピン装置
を提供することを目的とする。 The object of this invention is to solve the above problems and provide a pin device equipped with a flange bushing that can be manufactured at low cost.
課題を解決するための手段
上記の課題を解決するために講じたこの考案の
手段は、
イ ブラケツトおよびボスのそれぞれに嵌挿して
相対するつば付きブツシユの一方のつば付きブ
ツシユを筒体と、丸座金状のスラストプレート
に分離して形成し、
ロ 上記筒体のつば部の外径は、ブツシユ穴へ嵌
挿する円筒部の外径より若干大径の寸法とし、
ハ また、スラストプレートの内径は上記筒体の
つば部の外径より大きくし、かつスラストプレ
ートの外径は相対する他方のつば付きブツシユ
のつば部外径と同じ寸法に設定し、
ニ 上記筒体をブツシユ穴に嵌挿かつスラストプ
レートを筒体のつば部の外周側に環装するとと
もに、上記スラストプレートを弾性ピンその他
の手段により筒体を嵌挿した部材に係止せしめ
て構成した。Means for Solving the Problems The means of this invention taken to solve the above problems is as follows: One of the flanged bushes that are inserted into the bracket and the boss to face each other, one of the flanged bushes is connected to the cylindrical body and the round body. It is formed separately into a washer-like thrust plate, (b) the outer diameter of the flange of the cylinder body is slightly larger than the outer diameter of the cylindrical part to be inserted into the bushing hole, and (c) the inner diameter of the thrust plate is is larger than the outside diameter of the flange of the cylindrical body, and the outside diameter of the thrust plate is set to be the same as the outside diameter of the flange of the other opposing bushing with a flange, and (d) the cylindrical body is inserted into the bushing hole. In addition, a thrust plate is attached around the outer peripheral side of the flange of the cylinder, and the thrust plate is locked to a member into which the cylinder is inserted by means of an elastic pin or other means.
作 用
イ 筒体は、そのつば部の外径寸法を円筒部の外
径より若干大径にしたので、筒体の製作時に筒
体をパイプ鋼材の粗材より削り出すことができ
る。粗材にパイプ鋼材を使用するので、切削屑
の量を少なくかつ切削加工費を低廉にすること
ができる。Function (a) Since the outer diameter of the flange of the cylindrical body is made slightly larger than the outer diameter of the cylindrical part, the cylindrical body can be machined out of a rough material of pipe steel when manufacturing the cylindrical body. Since pipe steel is used as the rough material, the amount of cutting waste can be reduced and cutting costs can be reduced.
ロ スラストプレートはその形状が丸座金状であ
るので、スラストプレートの製作時には丸棒鋼
材などに粗材を用い、比較的少ない切削屑を出
すことにより削り出すことができる。Since the thrust plate is shaped like a round washer, it can be machined by using rough material such as a round steel bar and producing relatively little cutting waste when manufacturing the thrust plate.
ハ この考案のつば付きブツシユは、筒体をブツ
シユ穴に嵌挿かつスラストプレートを筒体のつ
ば部の外周側に環装し、上記スラストプレート
を弾性ピンその他の手段により、筒体を嵌挿し
た部材にスラストプレートを係止せしめる。そ
れにより、上記筒体およびスラストプレートが
つば付きブツシユの機能を発揮する。C. The flange bush of this invention has a cylindrical body inserted into the bush hole, a thrust plate mounted around the outer circumference of the flange of the cylindrical body, and the cylindrical body inserted into the thrust plate using an elastic pin or other means. The thrust plate is locked to the attached member. Thereby, the cylindrical body and the thrust plate function as a bush with a flange.
実施例
第１図は、この考案にかかるピン装置２１をそ
なえたピン連結部２２の断面図である。図におい
て従来技術と同一構成要素を使用するものに対し
ては同符号を付す。７′はブラケツト、２３は筒
体、２４はスラストプレート、２５は弾性ピン、
２６はブラケツト７′の内側端面部に穿設した弾
性ピン嵌挿用穴である。第２図は、筒体２３の断
面図である。図において、２７は筒体２３のつば
部、Ｅはつば部２７の外径寸法、２８は円筒部、
d′は円筒部２８の外径寸法である。第３図は、ス
ラストプレート２４の断面図である。図におい
て、２９はスラストプレート２４の一方の端面部
に穿設した弾性ピン嵌挿用穴、Ｄはスラストプレ
ート２４の外径寸法、Ｆは内径寸法である。第４
図は、第３図のＢより見た図である。Embodiment FIG. 1 is a sectional view of a pin connecting portion 22 equipped with a pin device 21 according to this invention. In the figures, the same reference numerals are given to the same components as in the prior art. 7' is a bracket, 23 is a cylinder, 24 is a thrust plate, 25 is an elastic pin,
Reference numeral 26 designates an elastic pin insertion hole bored in the inner end surface of the bracket 7'. FIG. 2 is a sectional view of the cylinder 23. In the figure, 27 is the collar of the cylindrical body 23, E is the outer diameter dimension of the collar 27, 28 is the cylindrical part,
d' is the outer diameter dimension of the cylindrical portion 28. FIG. 3 is a sectional view of the thrust plate 24. In the figure, 29 is a hole for inserting an elastic pin formed in one end face of the thrust plate 24, D is an outer diameter dimension of the thrust plate 24, and F is an inner diameter dimension. Fourth
The figure is a view seen from B in FIG.
次に、この考案にかかるピン装置２１の構成を
第１図〜第４図について述べる。ブラケツト７′
に嵌挿するつば付きブツシユを筒体２３と、丸座
金状のスラストプレート２４に分離して形成し、
上記筒体２３のつば部２７の外径寸法Ｅは、ブツ
シユ穴９へ嵌挿する円筒部２８の外径寸法d′より
若干大径の寸法とし、またスラストプレート２４
の内径寸法Ｆは上記筒体２３のつば部２７の外径
寸法Ｅより大きくし、かつスラストプレート２４
の外径寸法Ｄは相対するつば付きブツシユ１２の
つば部１４外径と同じ寸法に設定した。そして上
記筒体２３をブツシユ穴９に嵌挿かつスラストプ
レート２４を筒体２３のつば部２７の外周側に環
装するとともに、上記スラストプレート２４を弾
性ピン２５により、ブラケツト７′の内側端面部
に係止せしめて構成した。 Next, the configuration of the pin device 21 according to this invention will be described with reference to FIGS. 1 to 4. Bracket 7'
A bush with a flange to be inserted into the cylinder body 23 and a thrust plate 24 shaped like a round washer are formed separately.
The outer diameter E of the flange 27 of the cylindrical body 23 is slightly larger than the outer diameter d' of the cylindrical part 28 that is fitted into the bushing hole 9.
The inner diameter F of the cylindrical body 23 is larger than the outer diameter E of the collar 27 of the cylindrical body 23, and the thrust plate 24
The outer diameter dimension D is set to be the same as the outer diameter of the flange portion 14 of the opposing bushing 12 with a flange. Then, the cylinder 23 is fitted into the bushing hole 9, the thrust plate 24 is mounted around the outer circumference of the collar 27 of the cylinder 23, and the thrust plate 24 is attached to the inner end surface of the bracket 7' by means of an elastic pin 25. It was constructed by locking it in.
次に、この考案にかかるピン装置２１の作用機
能について述べる。筒体２３は、そのつば部２７
の外径寸法Ｅを円筒部２８の外径寸法d′より若干
大径にしたので、筒体２３の製作時に筒体２３を
パイプ鋼材の粗材より削り出すことができる。ま
たスラストプレート２４はその形状が丸座金状で
あるので、スラストプレート２４の製作時には丸
棒鋼材などの粗材を用い、比較的少ない切削屑を
出すことにより削り出すことができる。すなわ
ち、つば付きブツシユを筒体とスラストプレート
に分離して形成するように形成したので、筒体と
スラストプレートの製作時に、粗材の材料ロスと
切削加工費を低減することができる。また筒体２
３とスラストプレート２４をブラケツト７′に対
して嵌着することにより、つば付きブツシユの機
能を十分に発揮できる。また、油圧シヨベルの長
期稼働により、筒体２３とスラストプレート２４
のいずれか一方が破損、損耗をおこしたときに
は、その破損、損耗をおこした一方だけを取替え
ることができるので、経済的である。 Next, the functions of the pin device 21 according to this invention will be described. The cylindrical body 23 has a flange 27
Since the outer diameter dimension E is made slightly larger than the outer diameter dimension d' of the cylindrical portion 28, the cylindrical body 23 can be machined out of a rough pipe steel material when the cylindrical body 23 is manufactured. Further, since the thrust plate 24 has a round washer shape, when manufacturing the thrust plate 24, a rough material such as a round bar steel material can be used, and it can be machined by producing a relatively small amount of cutting waste. That is, since the flanged bushing is formed separately into the cylindrical body and the thrust plate, it is possible to reduce the loss of raw material and the cutting cost when manufacturing the cylindrical body and the thrust plate. Also, cylinder body 2
3 and the thrust plate 24 to the bracket 7', the function of the flanged bush can be fully demonstrated. In addition, due to long-term operation of the hydraulic excavator, the cylinder body 23 and thrust plate 24
If either one of them is damaged or worn out, only the damaged or worn one can be replaced, which is economical.
なお上記実施例ではスラストプレート２４を弾
性ピン２５によりブラケツト７′の内側端面部に
係止するようにしているが、弾性ピンを使用せず
に、スラストプレートの内径部を筒体のつば部の
外径部を圧入（たとえば冷やし嵌めなど）し、筒
体とスラストプレートを一体形に形成してもよ
い。 In the above embodiment, the thrust plate 24 is fixed to the inner end surface of the bracket 7' by the elastic pin 25, but instead of using the elastic pin, the inner diameter of the thrust plate is fixed to the inner end surface of the cylindrical body. The cylindrical body and the thrust plate may be integrally formed by press-fitting the outer diameter portion (for example, by cold fitting).
考案の効果
この考案にかかるピン装置では、つば付きブツ
シユを筒体とスラストプレートに分離して形成し
たので、筒体はその製作時に筒体をパイプ鋼材の
粗材より削り出すことができる。またスラストプ
レートはその形状が丸座金状であるので、スラス
トプレートの製作時には丸棒鋼材などの粗材を用
い、比較的少ない切削屑を出すことにより削り出
すことができる。それにより筒体とスラストプレ
ートの製作時に、粗材の材料ロスと切削加工費を
低減することができる。また、油圧シヨベルの長
期稼働により、筒体とスラストプレートのいずれ
か一方が破損、損耗をおこしたときには、その破
損、損耗をおこした一方だけを取替えることがで
きるので、経済的である。Effects of the invention In the pin device according to this invention, the bush with a flange is formed separately into the cylindrical body and the thrust plate, so that the cylindrical body can be machined out of a rough pipe steel material when manufacturing the cylindrical body. Further, since the thrust plate has a round washer shape, when manufacturing the thrust plate, a rough material such as a round steel bar is used, and the thrust plate can be machined with relatively little cutting waste. Thereby, it is possible to reduce the loss of raw material and the cutting cost when manufacturing the cylinder and the thrust plate. Furthermore, when either the cylinder body or the thrust plate becomes damaged or worn out due to long-term operation of the hydraulic excavator, only the damaged or worn one can be replaced, which is economical.
したがつてこの考案にかかるピン装置による
と、省資源とコストダウンをはかることができ
る。 Therefore, according to the pin device according to this invention, it is possible to save resources and reduce costs.
第１図はこの考案にかかるピン装置をそなえた
ピン連結部の断面図、第２図は筒体の断面図、第
３図はスラストプレートの断面図、第４図は第３
図のＢより見た図、第５図は油圧シヨベル用作業
アタツチメントの側面図、第６図は第５図におけ
るピン連結部のＡ−Ａ断面図、第７図は従来技術
のつば付きブツシユを製作するときの粗材を示す
断面図である。
５，６，２２……ピン連結部、７，７′……ブ
ラケツト、８……ボス、９，１０……ブツシユ
穴、１１，１１′，１２……つば付きブツシユ、
１３，１３′，１４，２７……つば部、２０，２
８……円筒部、２１……ピン装置、２３……筒
体、２４……スラストプレート、２５……弾性ピ
ン。
Fig. 1 is a cross-sectional view of a pin connecting portion equipped with a pin device according to this invention, Fig. 2 is a cross-sectional view of a cylinder, Fig. 3 is a cross-sectional view of a thrust plate, and Fig. 4 is a cross-sectional view of a cylindrical body.
Figure 5 is a side view of the working attachment for a hydraulic excavator, Figure 6 is a sectional view taken along line A-A of the pin connection part in Figure 5, and Figure 7 is a conventional bushing with a flange. It is a cross-sectional view showing a rough material when manufacturing. 5, 6, 22... Pin connection part, 7, 7'... Bracket, 8... Boss, 9, 10... Bush hole, 11, 11', 12... Bush with collar,
13, 13', 14, 27...Brim part, 20, 2
8... Cylindrical portion, 21... Pin device, 23... Cylindrical body, 24... Thrust plate, 25... Elastic pin.
Claims (1)
付きブツシユを嵌挿し、上記ブラケツトとボスと
をピンにて互いに回動可能に連結したピン連結部
において、ブラケツトおよびボスのそれぞれに嵌
挿して相対するつば付きブツシユの一方のつば付
きブツシユを筒体と、丸座金状のスラストプレー
トに分離して形成し、上記筒体のつば部の外径は
ブツシユ穴へ嵌挿する円筒部の外径より若干大径
の寸法とし、またスラストプレートの内径は上記
筒体のつば部の外径より大きくし、かつスラスト
プレートの外径は相対する他方のつば付きブツシ
ユのつば部外径と同じ寸法に設定し、上記筒体を
ブツシユ穴に嵌挿かつスラストプレートを筒体の
つば部の外周側に環装するとともに、上記スラス
トプレートを弾性ピンその他の手段により筒体を
嵌挿した部材に係止せしめて構成したことを特徴
とするピン装置。 The bushes with flanges are fitted into the respective bushing holes of the bracket and the boss, and the opposing bushes with flanges are fitted into the bracket and the boss at the pin connection part where the bracket and boss are rotatably connected to each other with a pin. One of the bushes with a flange is separated into a cylindrical body and a circular washer-shaped thrust plate, and the outer diameter of the flange of the cylindrical body is slightly larger than the outer diameter of the cylindrical part that is inserted into the bushing hole. The inner diameter of the thrust plate is larger than the outer diameter of the flange of the cylinder, and the outer diameter of the thrust plate is set to be the same as the outer diameter of the flange of the other opposing bushing. The body is inserted into the bushing hole, the thrust plate is mounted around the outer circumference of the flange of the cylindrical body, and the thrust plate is locked to the member into which the cylindrical body is inserted by means of an elastic pin or other means. A pin device featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984009986U JPS60122022U (en) | 1984-01-26 | 1984-01-26 | pin device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984009986U JPS60122022U (en) | 1984-01-26 | 1984-01-26 | pin device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60122022U JPS60122022U (en) | 1985-08-17 |
| JPH0320569Y2 true JPH0320569Y2 (en) | 1991-05-02 |
Family
ID=30490724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984009986U Granted JPS60122022U (en) | 1984-01-26 | 1984-01-26 | pin device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60122022U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5417733U (en) * | 1978-06-20 | 1979-02-05 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54113950U (en) * | 1978-01-30 | 1979-08-10 | ||
| JPS54174772U (en) * | 1978-05-31 | 1979-12-10 |
-
1984
- 1984-01-26 JP JP1984009986U patent/JPS60122022U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5417733U (en) * | 1978-06-20 | 1979-02-05 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60122022U (en) | 1985-08-17 |
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