JPS647196B2 - - Google Patents

Info

Publication number
JPS647196B2
JPS647196B2 JP13091781A JP13091781A JPS647196B2 JP S647196 B2 JPS647196 B2 JP S647196B2 JP 13091781 A JP13091781 A JP 13091781A JP 13091781 A JP13091781 A JP 13091781A JP S647196 B2 JPS647196 B2 JP S647196B2
Authority
JP
Japan
Prior art keywords
door
hinge
spring
cam
arm
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
Application number
JP13091781A
Other languages
Japanese (ja)
Other versions
JPS5833683A (en
Inventor
Hideo Watanabe
Tatsuya Matsuda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Iseki Agricultural Machinery Mfg Co Ltd
Original Assignee
Iseki Agricultural Machinery Mfg Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Iseki Agricultural Machinery Mfg Co Ltd filed Critical Iseki Agricultural Machinery Mfg Co Ltd
Priority to JP13091781A priority Critical patent/JPS5833683A/en
Publication of JPS5833683A publication Critical patent/JPS5833683A/en
Publication of JPS647196B2 publication Critical patent/JPS647196B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J5/00—Doors
    • B60J5/04—Doors arranged at the vehicle sides
    • B60J5/0486—Special type
    • B60J5/0487—Special type simplified doors related to cabins of, e.g. golf carts, tractors, jeeps, cranes, forklifts, etc.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Hinge Accessories (AREA)
  • Body Structure For Vehicles (AREA)

Description

【発明の詳細な説明】 ［産業上の利用分野］ この発明は、キヤビンドアの開閉装置に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cabin door opening/closing device.

［従来の技術及び発明が解決しようとする課題］ 従来、例えばトラクタのキヤビンドアは、キヤ
ビンフレームへドアの回動基部をヒンジピンにて
枢着し、ばね、或はオイルダンパとカム機構など
を用いてこのドアを閉方向に、或は開方向に付勢
することによつて、人手による開閉動作を小さい
力で行うことができるようにしている。このた
め、ドアをキヤビンに組込む際に、ドアにかかる
付勢力が作用しない自由回動の状態とすることが
できないことになつて、ヒンジピンの挿入操作な
どに困難性があつた。そこで、この困難性を克服
するために解決せらるべき技術的課題が生じてく
るのであり、この発明は該課題を解決することを
目的とする。[Prior Art and Problems to be Solved by the Invention] Conventionally, for example, the cabin door of a tractor has a rotating base of the door pivotally connected to the cabin frame with a hinge pin, and a spring, an oil damper, a cam mechanism, etc. By biasing the door in the closing direction or in the opening direction, manual opening and closing operations can be performed with a small force. For this reason, when assembling the door into the cabin, it is not possible to allow the door to freely rotate without any biasing force acting on it, making it difficult to insert the hinge pin. Therefore, a technical problem arises that must be solved in order to overcome this difficulty, and it is an object of the present invention to solve this problem.

［課題を解決するための手段］ 本発明は、上記目的を達成せんとして提案せら
れたものであり、キヤビン縦フレーム１にヒンジ
取付用フレーム２を固設し、このヒンジ取付用フ
レーム２の先端部位にはドア５に固設したドアヒ
ンジ片７の先端部の回動基部７ａが枢着されると
共に、該回動基部７ａにアーム１０を前記ヒンジ
取付用フレーム２の内側面に向つて突設し、該ア
ーム１０と対向し、且つ、該アーム１０の回動カ
ム面を形成する凹曲面に形成した剛性のヒンジカ
ム１１の一端部を前記ヒンジ取付用フレーム２の
中間部位の端部に枢着し、更に、該ヒンジカム１
１の前記枢着部の反対側であつて、且つ、前記凹
曲面の裏面にばね座１１ａを凹設し、該ばね座１
１ａと対向せる前記ヒンジ取付用フレーム２の基
部にもばね座２ｂを凹設し、之等のばね座２ｂ，
１１ａ間にコイル状の圧縮押圧型のばね１３を介
装し、該ヒンジカム１１の前記凹曲面のカム面の
両端近傍には該ヒンジカム１１の枢着側をドア閉
部Ｓとし、他端側をドア開部Ｏとして対峙せしめ
ると共にその中間部を稍深く凹設して中立保持部
Ｎとし、前記ドア閉部Ｓ及びドア開部Ｏの部位で
は、前記ばね１３が圧縮してその押圧力にて前記
アーム１０が圧接できるように構成し、前記中立
保持部Ｎでは前記ばね１３が圧縮しないように前
記カム面の凹曲面が構成されていることを特徴と
するキヤビンドアの開閉装置を提供せんとするも
のである。[Means for Solving the Problems] The present invention has been proposed to achieve the above object. A hinge mounting frame 2 is fixedly mounted on a cabin vertical frame 1, and the tip of the hinge mounting frame 2 is fixed to the cabin vertical frame 1. A rotating base 7a at the tip of a door hinge piece 7 fixedly attached to the door 5 is pivotally attached to the portion, and an arm 10 is provided on the rotating base 7a to protrude toward the inner surface of the hinge mounting frame 2. One end of a rigid hinge cam 11 facing the arm 10 and formed into a concave curved surface forming a rotating cam surface of the arm 10 is pivoted to the end of the intermediate portion of the hinge mounting frame 2. Furthermore, the hinge cam 1
A spring seat 11a is recessed on the opposite side of the pivot joint portion of No. 1 and on the back surface of the concave curved surface, and
A spring seat 2b is also recessed in the base of the hinge mounting frame 2 facing 1a, and the spring seats 2b,
A coiled compression type spring 13 is interposed between 11a, and near both ends of the concave curved cam surface of the hinge cam 11, the pivoting side of the hinge cam 11 is a door closing part S, and the other end is a door closing part S. The spring 13 is compressed at the door closing portion S and the door opening portion O, and the spring 13 is compressed by the pressing force of the door closing portion S and door opening portion O. An object of the present invention is to provide a cabin door opening/closing device characterized in that the arm 10 is configured to be able to be pressed into contact with each other, and the cam surface is configured to have a concave curved surface so that the spring 13 is not compressed in the neutral holding portion N. It is something.

［実施例及び作用］ 以下、本発明の一実施例を別紙添付図面に従つ
て詳述する。第１図に例示したトラクタのキヤビ
ン縦フレーム１に第８図の正面図で示すように、
ヒンジ取付用フレーム２を受金３を介してボルト
４，４…にて取付、更に、ドア５の外側部にボル
ト６，６…にて取付たドアヒンジ片７の回動基部
７ａを前記ヒンジ取付用フレーム２の二又状部２
ａ，２ａに嵌入して、該回動基部７ａを前記二又
状部２ａ，２ａの先端部の上下間に挿通したヒン
ジピン８に枢着して該ドア５を開閉自在に構成
し、（尚、ドア５の下部には第１図のように下部
ヒンジ片９を設けている）前記回動基部７ａには
前記ヒンジ取付用フレーム２側に向つてアーム１
０が突設されている。又、前記ヒンジ取付用フレ
ーム２の二又状部２ａ，２ａ間の中央部位であつ
て、且つ、第２図に於ては上端部位にピン１２を
架設し、該ピン１２に一端部を枢着されたヒンジ
カム１１の前面を前記アーム１０に対向せしめる
と共に、該対向面を凹曲面に形成して前記アーム
１０の回動カム面とする。更に、該ヒンジカム１
１の前記ヒンジ１１による枢着部の反対側であつ
て、前記凹曲面の裏面にばね座１１ａを凹設し、
該ばね座１１ａに対向せる前記ヒンジ取付用フレ
ーム２の基部にもばね座２ｂを凹設し、之等のば
ね座２ｂ，１１ａ間にコイル状の圧縮押圧型のば
ね１３を介装し、該ばね１３によつてヒンジカム
１１がアーム１０に接近するように付勢してい
る。[Embodiment and operation] Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. As shown in the front view of FIG. 8, the longitudinal cabin frame 1 of the tractor illustrated in FIG.
Attach the hinge attachment frame 2 via the receiver 3 with bolts 4, 4..., and then attach the rotating base 7a of the door hinge piece 7 attached to the outside of the door 5 with bolts 6, 6... to the hinge. Forked part 2 of frame 2 for
a, 2a, and the pivot base 7a is pivotally connected to a hinge pin 8 inserted between the upper and lower ends of the fork-shaped parts 2a, 2a, so that the door 5 can be opened and closed. , a lower hinge piece 9 is provided at the lower part of the door 5 as shown in FIG.
0 is provided protrudingly. Further, a pin 12 is installed at the center portion between the forked portions 2a, 2a of the hinge attachment frame 2, and at the upper end portion in FIG. The front surface of the attached hinge cam 11 is made to face the arm 10, and the opposing surface is formed into a concave curved surface to serve as a rotating cam surface of the arm 10. Furthermore, the hinge cam 1
A spring seat 11a is recessedly provided on the back surface of the concave curved surface on the opposite side of the pivot joint portion by the hinge 11 of No. 1,
A spring seat 2b is also recessed in the base of the hinge mounting frame 2 facing the spring seat 11a, and a coiled compression spring 13 is interposed between the spring seats 2b and 11a. A spring 13 urges the hinge cam 11 to approach the arm 10.

而して、該ヒンジカム１１の前記凹曲面のカム
面には、回動基部に近い側にドア閉部Ｓ、中間部
位に中立保持部Ｎ、及び前記ドア閉部Ｓに対向す
る反対側にドア開部Ｏを夫々設けてある。尚、前
記中立保持部Ｎの凹曲面の部位は稍深く凹曲し
て、前記アーム１０の先端部が当接しないように
する。然るときは、前記ばね１３に対しての圧縮
力も作用せず、そして、該ばね１３の押圧力が該
アーム１０に作用しないようにしてある。そこで
第２図に示すように、キヤビン縦フレーム１のパ
ツキン１４にドア５のパツキン１５が圧接するド
ア閉位置では該ドア閉部Ｓがアーム１０に当接
し、この当接点に於て、該アーム１０に作用する
前記ばね１３の押動力F1は、ドアヒンジ片７を
第２図に於て左廻りに回動させるためドア５は閉
じ状態に保持され、次に第３図に示すように、ド
ア５を少し開いてアーム１０を中立保持部Ｎにの
ぞませるとばね座１１ａ，２ｂの間〓は充分に大
きくなつてばね１３が圧縮されなくなり、このた
め中立保持部Ｎがアーム１０に当接せずドア５は
この中立保持部Ｎの範囲内で全く自由に回動でき
ることになり、そして中立保持部Ｎとドア開部Ｏ
の間に突設している乗越部Ｄにアーム１０が当接
する第４図の状態では、ばね１３が最も強く圧縮
されてこの当接点にてアーム１０に作用する押動
力F2はドアヒンジ片７を同図の右廻りに回動さ
せるため、ドア５は開き状態の方向に付勢され、
更に、この乗越部Ｄを越えてドア５を開くときは
第５図の示すように、ドア開部Ｏにアーム１０が
当接するので、ばね１３によつて上記当接点にて
アーム１０に作用する押動力F3はドアヒンジ片
７をさらに右廻りに回動させるが、ドアヒンジ片
７の係止部７ｂがヒンジ取付用フレーム２の係止
部２ｃに衝突することになつて、ドア５はこの開
き位置にて静止し、又、このときドア５にドア閉
方向の僅かな力が誤つて作用しても、ばね１３を
さらに強く圧縮して乗越部Ｄをアーム１０が越え
るにはかなりの力が必要となるのでドア閉方向に
も妄動することがないように構成している。 The concave curved cam surface of the hinge cam 11 has a door closing part S on the side near the rotation base, a neutral holding part N in the middle part, and a door on the opposite side opposite to the door closing part S. An opening O is provided in each case. The concave surface of the neutral holding portion N is slightly deeply curved to prevent the tip of the arm 10 from coming into contact with it. In this case, no compressive force is applied to the spring 13, and the pressing force of the spring 13 is not applied to the arm 10. Therefore, as shown in FIG. 2, in the door closed position where the gasket 15 of the door 5 comes into pressure contact with the gasket 14 of the cabin vertical frame 1, the door closing portion S abuts the arm 10, and at this contact point, the arm The pushing force F1 of the spring 13 acting on the spring 10 causes the door hinge piece 7 to rotate counterclockwise in FIG. 2, so that the door 5 is held in the closed state, and then as shown in FIG. When the door 5 is slightly opened and the arm 10 is looked into the neutral holding part N, the space between the spring seats 11a and 2b becomes sufficiently large and the spring 13 is no longer compressed, so that the neutral holding part N comes into contact with the arm 10. The door 5 can freely rotate within the range of this neutral holding part N without touching, and the door 5 can rotate completely within the range of this neutral holding part N and the door opening part O.
In the state shown in FIG . 4 in which the arm 10 is in contact with the jump-over portion D protruding between In order to rotate the door 5 clockwise in the figure, the door 5 is biased toward the open state.
Furthermore, when the door 5 is opened beyond this jump-over part D, the arm 10 comes into contact with the door opening part O, as shown in FIG. 5, so that the spring 13 acts on the arm 10 at the contact point. The pushing force F3 further rotates the door hinge piece 7 clockwise, but the locking part 7b of the door hinge piece 7 collides with the locking part 2c of the hinge mounting frame 2, and the door 5 is opened. Even if the door 5 is stationary at this position, and even if a slight force in the direction of closing the door is erroneously applied to the door 5, a considerable force is required to further compress the spring 13 and cause the arm 10 to cross the overpass portion D. Since it is necessary, the structure is designed so that the door does not move accidentally in the direction of closing the door.

従つて、ドア５をキヤビン縦フレーム１に組込
むには、先ずキヤビン縦フレーム１にヒンジ取付
用フレーム２を取付けておいて、ドア５に固設し
たドアヒンジ片７の回動基部７ａをヒンジ取付用
フレーム２へヒンジピン８を用いて枢着し、ヒン
ジカム１１をピン１２を用いてヒンジ取付用フレ
ーム２に枢着し、第３図に示すように、アーム１
０がヒンジカム１１の中立保持部Ｎにのぞむ位置
にドア５を位置せしめて、ばね１３をばね座１１
ａと２ｂの間に挿入する。斯くしてドア５の組込
みがなされるものであるが、このとき、該ばね１
３は圧縮する必要なくそのまま容易に挿着でき
る。 Therefore, in order to assemble the door 5 into the cabin vertical frame 1, first attach the hinge mounting frame 2 to the cabin vertical frame 1, and then attach the pivot base 7a of the door hinge piece 7 fixed to the door 5 to the hinge mounting frame 2. The arm 1 is pivoted to the frame 2 using a hinge pin 8, and the hinge cam 11 is pivoted to the hinge mounting frame 2 using the pin 12.
Position the door 5 at a position where 0 faces the neutral holding portion N of the hinge cam 11, and then move the spring 13 to the spring seat 11.
Insert between a and 2b. In this way, the door 5 is assembled, and at this time, the spring 1
3 can be easily inserted as is without the need for compression.

尚、第１図においてキヤビン縦フレーム１は防
振材１６を介してミツシヨンケース１７に、又、
防振剤１８を介してリヤアクスルハウジング１９
に取付けられている。 In FIG. 1, the cabin vertical frame 1 is connected to the transmission case 17 via the vibration isolating material 16, and
Rear axle housing 19 via anti-vibration agent 18
installed on.

［発明の効果］ 本発明のキヤビンドアの開閉装置は、ドア５に
取付けられたドアヒンジ片７の回動基部７ａを、
キヤビン縦フレーム１に取付けたヒンジ取付用フ
レーム２の先端部に枢着し、更に、該回動基部７
ａにはアーム１０が前記ヒンジ取付用フレーム２
側に向つて突設されている。そして、このアーム
１０に対向する面を凹曲面に形成したヒンジカム
１１の一端部を前記ヒンジ取付用フレーム２の略
中間部位に枢着すると共に、該枢着部と反対側で
あつて前記凹曲面の裏面にばね座１１ａを凹設
し、該ばね座１１ａに対向する側の前記ヒンジ取
付用フレーム２の基部にもばね座２ｂを凹設し、
之等のばね座２ｂ，１１ａ間にコイル状の圧縮押
圧型のばね１３を介装してある。そして、このヒ
ンジカム１１のカム面にはドア５を閉方向に、
又、開方向に夫々上記アーム１０を介して付勢す
るドア閉部Ｓと開部Ｏとを対向して設けると共
に、上記アーム１０に回動付勢力が作用しない中
立保持部Ｎを設けているので、ドア５の閉じ位置
ではアーム１０に弾性当接されるヒンジカム１１
のカム面のドア閉部Ｓとアーム１０の作用によつ
てドア５が閉方向に押動されることになり、又、
ドア５の開き位置では上記ヒンジカム１１のカム
面のドア開部Ｏとアーム１０の作用によつドア５
が開方向に回動付勢されており、僅かな力による
入手の開閉操作によつて容易にドア５を開閉動作
することができる。そして、ヒンジカム１１の中
立保持部Ｎにアーム１０をのぞませればアーム１
０側、即ち、ドア５には回動付勢力が作用しなく
なり、この位置を用いてドア５の組込み作業を容
易に行うこができるようになり、更に、ばね１３
の挿着も容易となつたのである。[Effects of the Invention] The cabin door opening/closing device of the present invention allows the rotating base 7a of the door hinge piece 7 attached to the door 5 to
It is pivotally attached to the tip of the hinge attachment frame 2 attached to the cabin vertical frame 1, and furthermore, the pivot base 7
In a, the arm 10 is attached to the hinge mounting frame 2.
It protrudes toward the side. One end of a hinge cam 11 whose surface facing the arm 10 is formed into a concave curved surface is pivotally attached to a substantially intermediate portion of the hinge mounting frame 2, and the concave curved surface is on the opposite side of the pivoting portion. A spring seat 11a is recessed in the back surface of the spring seat 11a, and a spring seat 2b is also recessed in the base of the hinge mounting frame 2 on the side opposite to the spring seat 11a,
A coiled compression type spring 13 is interposed between the spring seats 2b and 11a. Then, on the cam surface of this hinge cam 11, the door 5 is placed in the closing direction.
In addition, a door closing portion S and an opening portion O, which are biased in the opening direction via the arm 10, are provided to face each other, and a neutral holding portion N is provided on the arm 10, on which no rotational biasing force acts. Therefore, when the door 5 is in the closed position, the hinge cam 11 comes into elastic contact with the arm 10.
The door 5 is pushed in the closing direction by the action of the door closing part S of the cam surface and the arm 10, and
In the open position of the door 5, the door 5 is opened by the action of the door opening O of the cam surface of the hinge cam 11 and the arm 10.
is rotatably biased in the opening direction, and the door 5 can be easily opened and closed by a slight force. Then, if the arm 10 is looked into the neutral holding part N of the hinge cam 11, the arm 1
0 side, that is, the rotation biasing force no longer acts on the door 5, and the door 5 can be easily assembled using this position.
This also made it easier to insert and install.

【図面の簡単な説明】[Brief explanation of drawings]

図は本発明の一実施例を示したものである。第
１図はキヤビンの側面図、第２図乃至第５図はド
アの夫々の開閉位置を示し、第２図はその一部横
断平面図、第３図乃至第５図は同平面図、第６図
はドアヒンジの拡大側面図、第７図は第２図にお
けるＡ矢視図、第８図はヒンジ取付用フレームの
正面図、第９図はヒンジカムの拡大側面図であ
る。 １……キヤビン縦フレーム、２……ヒンジ取付
用フレーム、２ａ……二又状部、２ｂ……ばね
座、２ｃ，７ｂ……係止部、３……受座、４，６
……ボルト、５……ドア、７……ドアヒンジ片、
７ａ……回動基部、８……ヒンジピン、９……下
部ヒンジ、１０……アーム、１１……ヒンジカ
ム、１１ａ……ばね座、１２……ピン、１３……
ばね、１４，１５……パツキン材、１６，１８…
…防振材、１７……ミツシヨンケース、１９……
リヤアクスルハウジング、Ｓ……ドア閉部、Ｎ…
…中立保持部、Ｏ……ドア開部、Ｄ……乗越部、
F1，F2，F3……押動力。 The figure shows one embodiment of the present invention. Fig. 1 is a side view of the cabin, Figs. 2 to 5 show the respective opening and closing positions of the door, Fig. 2 is a partially cross-sectional plan view thereof, Figs. 3 to 5 are the same plan view, and Figs. 6 is an enlarged side view of the door hinge, FIG. 7 is a view taken in the direction of arrow A in FIG. 2, FIG. 8 is a front view of the hinge mounting frame, and FIG. 9 is an enlarged side view of the hinge cam. DESCRIPTION OF SYMBOLS 1...Cabin vertical frame, 2...Hinge mounting frame, 2a...Forked part, 2b...Spring seat, 2c, 7b...Locking part, 3...Catch seat, 4, 6
...Bolt, 5...Door, 7...Door hinge piece,
7a... Rotating base, 8... Hinge pin, 9... Lower hinge, 10... Arm, 11... Hinge cam, 11a... Spring seat, 12... Pin, 13...
Spring, 14, 15... Packing material, 16, 18...
...Vibration isolation material, 17...Mission case, 19...
Rear axle housing, S... Door closing part, N...
...neutral holding part, O...door opening, D...crossover part,
F 1 , F 2 , F 3 ...Pushing force.

Claims (1)

【特許請求の範囲】[Claims] １ キヤビン縦フレーム１にヒンジ取付用フレー
ム２を固設し、このヒンジ取付用フレーム２の先
端部位にはドア５に固設したドアヒンジ片７の先
端部の回動基部７ａが枢着されると共に、該回動
基部７ａにアーム１０を前記ヒンジ取付用フレー
ム２の内側面に向つて突設し、該アーム１０と対
向し、且つ、該アーム１０の回動カム面を形成す
る凹曲面に形成した剛性のヒンジカム１１の一端
部を前記ヒンジ取付用フレーム２の中間部位の端
部に枢着し、更に、該ヒンジカム１１の前記枢着
部の反対側であつて、且つ、前記凹曲面の裏面に
ばね座１１ａを凹設し、該ばね座１１ａと対向せ
る前記ヒンジ取付用フレーム２の基部にもばね座
２ｂを凹設し、之等のばね座２ｂ，１１ａ間にコ
イル状の圧縮押圧型のばね１３を介装し、該ヒン
ジカム１１の前記凹曲面のカム面の両端近傍には
該ヒンジカム１１の枢着側をドア閉部Ｓとし、他
端側をドア開部Ｏとして対峙せしめると共にその
中間部を稍深く凹設して中立保持部Ｎとし、前記
ドア閉部Ｓ及びドア開部Ｏの部位では、前記ばね
１３が圧縮してその押圧力にて前記アーム１０が
圧接できるように構成し、前記中立保持部Ｎでは
前記ばね１３が圧縮しないように前記カム面の凹
曲面が構成されていることを特徴とするキヤビン
ドアの開閉装置。1. A hinge mounting frame 2 is fixedly mounted on the cabin vertical frame 1, and a rotating base 7a at the distal end of a door hinge piece 7 fixedly mounted on the door 5 is pivotally attached to the distal end portion of the hinge mounting frame 2. , an arm 10 is provided on the rotation base 7a to protrude toward the inner surface of the hinge attachment frame 2, and is formed into a concave curved surface that faces the arm 10 and forms a rotation cam surface of the arm 10. One end of the rigid hinge cam 11 is pivotally attached to the end of the intermediate portion of the hinge mounting frame 2, and the other end of the hinge cam 11 is pivoted to the end of the intermediate portion of the hinge cam 11, and the back surface of the concave curved surface is A spring seat 11a is recessed in the spring seat 11a, a spring seat 2b is also recessed in the base of the hinge mounting frame 2 facing the spring seat 11a, and a coil-shaped compression press mold is formed between the spring seats 2b and 11a. A spring 13 is interposed between the hinge cam 11 and the concave curved cam surface of the hinge cam 11 has a pivoting side thereof serving as a door closing part S and a door opening part O facing each other. The middle part is slightly deeply recessed to form a neutral holding part N, and the spring 13 is compressed at the door closing part S and the door opening part O, so that the arm 10 can be pressed against the spring 13 by its pressing force. The cabin door opening/closing device is characterized in that the cam surface has a concave curved surface in the neutral holding portion N so that the spring 13 is not compressed.
JP13091781A 1981-08-21 1981-08-21 Opening and closing apparatus of cabin door Granted JPS5833683A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13091781A JPS5833683A (en) 1981-08-21 1981-08-21 Opening and closing apparatus of cabin door

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13091781A JPS5833683A (en) 1981-08-21 1981-08-21 Opening and closing apparatus of cabin door

Publications (2)

Publication Number Publication Date
JPS5833683A JPS5833683A (en) 1983-02-26
JPS647196B2 true JPS647196B2 (en) 1989-02-07

Family

ID=15045751

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13091781A Granted JPS5833683A (en) 1981-08-21 1981-08-21 Opening and closing apparatus of cabin door

Country Status (1)

Country Link
JP (1) JPS5833683A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60174772U (en) * 1984-04-27 1985-11-19 井関農機株式会社 cabin door opener
JPH0334513A (en) * 1989-06-30 1991-02-14 Matsushita Electric Ind Co Ltd Film capacitor
JP2005212521A (en) * 2004-01-27 2005-08-11 Yoka Ind Co Ltd Cabin frame of working vehicle

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4527523Y1 (en) * 1966-12-14 1970-10-24
JPS475725U (en) * 1971-02-08 1972-09-19

Also Published As

Publication number Publication date
JPS5833683A (en) 1983-02-26

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