JPH06156066A - Front window opening and closing device of cab for construction machine - Google Patents

Front window opening and closing device of cab for construction machine

Info

Publication number
JPH06156066A
JPH06156066A JP4338000A JP33800092A JPH06156066A JP H06156066 A JPH06156066 A JP H06156066A JP 4338000 A JP4338000 A JP 4338000A JP 33800092 A JP33800092 A JP 33800092A JP H06156066 A JPH06156066 A JP H06156066A
Authority
JP
Japan
Prior art keywords
front window
cable
cab
bracket
side bracket
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.)
Granted
Application number
JP4338000A
Other languages
Japanese (ja)
Other versions
JP3244136B2 (en
Inventor
Atsuo Fujii
篤夫 藤井
Yoshiaki Fujimoto
吉明 藤本
Satoshi Fujimoto
聡 藤本
Yasushi Kono
康 河野
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.)
Kobelco Construction Machinery Co Ltd
Original Assignee
Yutani Heavy Industries 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 Yutani Heavy Industries Ltd filed Critical Yutani Heavy Industries Ltd
Priority to JP33800092A priority Critical patent/JP3244136B2/en
Publication of JPH06156066A publication Critical patent/JPH06156066A/en
Application granted granted Critical
Publication of JP3244136B2 publication Critical patent/JP3244136B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Window Of Vehicle (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Power-Operated Mechanisms For Wings (AREA)

Abstract

PURPOSE:To freely move a front window up and down along roller guide rails by manual operation and to easily remove the same by removably connecting a front window side bracket hardware and a cable side bracket hardware to each other. CONSTITUTION:In the case of replacing a front window due to a breakage accident, a bolt 30 is loosened and removed. Whereupon, the connection between a front window side bracket hardware 27 and a cable side bracket hardware 28 is released. Accordingly, a front window 17 is freely move up and down along roller guide rails 21 by manual operation to prepare for removal. A bolt hole bored in the calbleside bracket hadware 28 is formed as an elongaed hole 29 parallel to the axial direction of a cable 22. Thus, if right and left cables are different in the degree of tension, the bolt 30 is loosened to shift the connection between the front window side bracket hardware 27 and the cable side bracket hardware 28, and the degree of tension of right and left cables is adjusted to solve right and left twisting of the front window 17, so that the front window 17 can be smoothly opened and closed.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、油圧ショベルなど建設
機械，作業車両に装備した運転室用キャブの前窓開閉装
置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a front window opening and closing device for a cab for a driver's cab, which is installed in construction machines such as hydraulic excavators and work vehicles.

【０００２】[0002]

【従来の技術】図１０は、油圧ショベル（図示しない）
のキャブ１に装備されている従来技術の前窓開閉装置を
示す側面図である。図１１は、図１０のＡーＡより見た
図である。従来技術では図１０及び図１１に示すよう
に、キャブ１の前面部に前窓２を設け、そのキャブ１の
内壁面に平行な左右のローラガイドレール３を配設し、
そのローラガイドレール３に沿って案内されるローラ４
を四隅に備えた上記前窓２を摺動移動自在にしている。
そしてキャブ１の後部にブレーキ付減速モータ５を配設
し、そのブレーキ付減速モータ５に巻上軸６を連結し、
その巻上軸６に巻上ドラム７を枢着するとともに、前窓
２の上端面部にケーブル連結金物８を固設し、そのケー
ブル連結金物８に連結したケーブル９を、巻上ドラム７
に巻上げ又は巻下げするようにしている。したがってブ
レーキ付減速モータ５を駆動操作することにより、前窓
２をキャブ（１）前面の前窓閉止位置とキャブ（１）天
井内面側の前窓開止位置との間で移動させて、所要の位
置に開閉させることができる。2. Description of the Related Art FIG. 10 shows a hydraulic excavator (not shown).
It is a side view which shows the front window opening / closing apparatus of the prior art with which the cab 1 of FIG. FIG. 11 is a view seen from AA in FIG. In the prior art, as shown in FIGS. 10 and 11, a front window 2 is provided on the front surface of a cab 1, and left and right roller guide rails 3 parallel to the inner wall surface of the cab 1 are arranged.
Roller 4 guided along the roller guide rail 3
The front window 2 having four corners is slidably movable.
A reduction motor 5 with a brake is arranged at the rear of the cab 1, and a hoisting shaft 6 is connected to the reduction motor 5 with a brake.
A hoisting drum 7 is pivotally attached to the hoisting shaft 6, a cable connecting metal member 8 is fixed to the upper end surface portion of the front window 2, and a cable 9 connected to the cable connecting metal member 8 is connected to the hoisting drum 7
It is designed to be wound up or down. Therefore, by driving the deceleration motor 5 with a brake, the front window 2 is moved between the front window closed position on the front surface of the cab (1) and the front window open position on the inner surface side of the cab (1) to obtain the required operation. It can be opened and closed in the position.

【０００３】[0003]

【発明が解決しようとする課題】従来技術の前窓開閉装
置では、前窓２の上端面部に固設したケーブル連結金物
８にケーブル９の前端末部を連結している。そのために
ブレーキ付減速モータ５の巻上操作を行ったときその巻
上力が下部のローラ４の上昇方向へ十分に作用しないの
で、前窓２の動きが円滑でない。そこでケーブルの前端
末部を前窓の下端側部に連結せしめた前窓開閉装置が、
種々勘案されている。しかしこの場合に、たとえば破損
事故をおこした前窓を取付け替えするためにその前窓を
ケーブル連結部より容易に取外すことのできる手段、左
右のケーブルの緊張度合を調整する手段、あるいは下部
のローラを十分円滑に転動せしめる手段が講じられてい
なかった。本発明は、上記の問題点を解決することを目
的とする。In the front window opening / closing device of the prior art, the front end portion of the cable 9 is connected to the cable connecting hardware 8 fixed to the upper end surface portion of the front window 2. Therefore, when the braking deceleration motor 5 is hoisted, the hoisting force does not sufficiently act in the ascending direction of the lower roller 4, so that the movement of the front window 2 is not smooth. Therefore, the front window opening and closing device that connects the front end of the cable to the lower end side of the front window is
Various considerations have been made. However, in this case, for example, in order to replace the front window that has been damaged, the front window can be easily detached from the cable connection, the means for adjusting the tension between the left and right cables, or the lower roller. There were no measures taken to make the rolling of the ship smooth enough. The present invention aims to solve the above problems.

【０００４】[0004]

【課題を解決するための手段】本発明の前窓開閉装置
は、前窓の下部フレームの下端側部に前窓側ブラケット
金具を固着し、かつその前窓側ブラケット金具に下部ロ
ーラを取付け、またケーブルの前端末部をケーブル側ブ
ラケット金具に固定して取付け、上記前窓側ブラケット
金具とケーブル側ブラケット金具を着脱自在に連結し
た。また前窓側ブラケット金具とケーブル側ブラケット
金具とをボルト締付により連結するようにし、前窓開閉
時における左右のケーブルの緊張度合を同じにするため
に、上記両ブラケット金具のうち開穿されているボルト
穴を、ケーブルの軸心方向と平行な長穴に形成した。前
窓側ブラケット金具に、下部ローラの転動方向がケーブ
ルの軸心方向と平行になるように、複数個の下部ローラ
を並設して構成した。A front window opening / closing device of the present invention has a front window side bracket metal fitting fixed to a lower end side of a lower frame of the front window, and a lower roller attached to the front window side bracket metal fitting, and a cable. The front end part of was fixedly attached to the cable side bracket metal fitting, and the front window side bracket metal fitting and the cable side bracket metal fitting were detachably connected. Further, the front window-side bracket metal fittings and the cable-side bracket metal fittings are connected by bolts, and in order to make the tension of the left and right cables the same when opening and closing the front window, the both bracket metal fittings are opened. The bolt hole was formed in a long hole parallel to the axial direction of the cable. A plurality of lower rollers are arranged side by side on the front window side bracket fitting so that the rolling direction of the lower rollers is parallel to the axial direction of the cable.

【０００５】[0005]

【実施例】以下、本発明の実施例を図面に基づいて詳細
に説明する。図１は、本発明の前窓開閉装置をそなえた
キャブ１６の要部側面図である。図において、１７は前
窓，１８は前窓１７の四隅にそなえているローラのうち
左右１個ずつの上部ローラ、１８’は左右２個ずつの下
部ローラ、１９はロックモータ、２０はキャブ１６の左
右の内壁面に配設したローラガイドレール、２１はケー
ブルガイドレール、２２はケーブル、２３は中間側チュ
ーブ部材、２４はケーブル２２の巻取り巻戻しを行う駆
動モータ、２５は端末側チューブ部材である。図２は、
図１のＢーＢより見た要部断面図である。本発明の前窓
開閉装置は左右が略対称形に形成されているので、右側
の部分に符号を付す。図３は、本発明におけるケーブル
２２の配索構成を示す斜視図である。図において、仮想
線で示す符号１６はキャブ、破線で示す符号２０は左側
のローラガイドレール、一点鎖線で示す符号２１はケー
ブルガイドレール、２６は前窓１７の下部フレームであ
る。図４は、図３のＣより見た要部内側側面図である。
図において、２７は前窓側ブラケット金具、２８はケー
ブル側ブラケット金具、２９はケーブル側ブラケット金
具２８に形成した長穴、３０はボルト、３１はケーブル
端末止め金具である。図５は、図４のＤより見た図であ
る。図において、３２は前窓側ブラケット金具２７に開
穿した（ボルト３０用の）ねじ穴である。図６は、図４
のＥより見た図である。図７は、図５のＦーＦより見た
図である。Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a side view of a main part of a cab 16 having a front window opening / closing device of the present invention. In the figure, 17 is a front window, 18 is an upper roller for each of the left and right rollers among four rollers provided at the four corners of the front window, 18 'is a lower roller for each of two left and right, 19 is a lock motor, and 20 is a cab 16 Roller guide rails disposed on the inner wall surfaces on the left and right sides of the cable, 21 a cable guide rail, 22 a cable, 23 an intermediate tube member, 24 a drive motor for winding and unwinding the cable 22, 25 a terminal tube member Is. Figure 2
FIG. 2 is a cross-sectional view of a main part seen from BB of FIG. 1. Since the front window opening / closing device of the present invention is formed in a substantially symmetrical shape on the left and right sides, the reference numeral is given to the right side portion. FIG. 3 is a perspective view showing a wiring configuration of the cable 22 according to the present invention. In the figure, reference numeral 16 shown by an imaginary line is a cab, reference numeral 20 shown by a broken line is a left roller guide rail, reference numeral 21 shown by an alternate long and short dash line is a cable guide rail, and 26 is a lower frame of the front window 17. FIG. 4 is a side view of the inside of the main part as viewed from C of FIG.
In the figure, 27 is a front window side bracket fitting, 28 is a cable side bracket fitting, 29 is an elongated hole formed in the cable side bracket fitting 28, 30 is a bolt, and 31 is a cable end stopper. FIG. 5 is a view seen from D in FIG. In the figure, reference numeral 32 is a screw hole (for the bolt 30) opened in the front window side bracket fitting 27. FIG. 6 shows FIG.
It is the figure seen from E. FIG. 7 is a view seen from line FF of FIG.

【０００６】次に、本発明の前窓開閉装置の構成を図１
〜図７について述べる。本発明では、前窓１７の下部フ
レーム２６の下端側部に前窓側ブラケット金具２７を固
着し、かつその前窓側ブラケット金具２７に下部ローラ
１８’を取付け、またケーブル２２の前端末部をケーブ
ル側ブラケット金具２８に、ケーブル端末止め金具３１
にて固定して取付け、上記前窓側ブラケット金具２７と
ケーブル側ブラケット金具２８とを、ボルト（３０）締
付により着脱自在に連結した。そしてまた、前窓（１
７）開閉時における左右のケーブル２２の緊張度合を同
じにするために、ケーブル側ブラケット金具２８に開穿
されているボルト穴を、ケーブル２２の軸心方向と平行
な長穴２９に形成した。また前窓側ブラケット金具２７
に、下部ローラ１８’の転動方向がケーブル２２の軸心
方向と平行になるように、２個のローラ１８’を並設し
て構成した。Next, the configuration of the front window opening / closing device of the present invention is shown in FIG.
~ Referring to FIG. In the present invention, the front window side bracket metal fitting 27 is fixed to the lower end side portion of the lower frame 26 of the front window 17, the lower roller 18 'is attached to the front window side bracket metal fitting 27, and the front end portion of the cable 22 is connected to the cable side. To the bracket metal fitting 28, the cable end stopper metal fitting 31
Then, the front window side bracket metal fitting 27 and the cable side bracket metal fitting 28 were detachably connected by tightening bolts (30). And again, the front window (1
7) In order to make the tensions of the left and right cables 22 equal when opening and closing, the bolt holes opened in the cable side bracket fitting 28 are formed in the elongated holes 29 parallel to the axial direction of the cable 22. In addition, front window bracket 27
In addition, two rollers 18 'are arranged side by side so that the rolling direction of the lower roller 18' is parallel to the axial direction of the cable 22.

【０００７】次に、本発明の前窓開閉装置の作用につい
て述べる。本発明におけるローラガイドレール２０はキ
ャブ１６の左右の内壁面に沿って、前面側より上部後方
端位置イ（図１に示す）に至るまで配設され、そのロー
ラガイドレール２０と上下位置の状態でケーブルガイド
レール２１が平行に連設されている。そして上記両ガイ
ドレール２０と２１のそれぞれガイド中心線の間隔は、
図４に示すように寸法ｐに設定されている。したがって
前窓側ブラケット金具２７とケーブル側ブラケット金具
２８とをボルト（３０）締付により連結しているときに
は、ローラ１８とケーブル２２のそれぞれ中心間間隔は
図６に示すように寸法ｐに設定されている。この状態で
構成されている前窓開閉装置において、たとえば前窓１
７が破損事故をおこして取付け替えをする場合には、ボ
ルト３０を緩めて取外す。そうすると、前窓側ブラケッ
ト金具２７とケーブル側ブラケット金具２８の連結は解
除される。それにより、前窓１７を手動によりローラガ
イドレール２１に沿って自由に上下移動させ、取外しの
準備を行うことができる。図８は、前窓側ブラケット金
具２７とケーブル側ブラケット金具２８との連結を解除
して、前窓１７を上方（矢印ロの方向）に手動で移動さ
せた状態を示す図である。図９は、図８のＧより見た図
である。Next, the operation of the front window opening / closing device of the present invention will be described. The roller guide rails 20 according to the present invention are arranged along the left and right inner wall surfaces of the cab 16 from the front surface side to the upper rear end position B (shown in FIG. 1), and the state of the roller guide rails 20 and the vertical position. The cable guide rails 21 are continuously arranged in parallel. The distance between the guide center lines of the two guide rails 20 and 21 is
As shown in FIG. 4, the dimension is set to p. Therefore, when the front window-side bracket metal fitting 27 and the cable-side bracket metal fitting 28 are connected by bolts (30) tightening, the distance between the centers of the roller 18 and the cable 22 is set to the dimension p as shown in FIG. There is. In the front window opening / closing device configured in this state, for example, the front window 1
When 7 causes a damage accident and is replaced, loosen the bolt 30 and remove it. Then, the connection between the front window side bracket metal fitting 27 and the cable side bracket metal fitting 28 is released. Thereby, the front window 17 can be manually moved up and down along the roller guide rails 21 to prepare for removal. FIG. 8 is a view showing a state in which the front window side bracket metal fitting 27 and the cable side bracket metal fitting 28 are disconnected from each other and the front window 17 is manually moved upward (in the direction of arrow B). FIG. 9 is a view seen from G in FIG.

【０００８】また本発明では、ケーブル側ブラケット金
具２８に開穿するボルト穴をケーブル２２の軸心方向と
平行な長穴２９に形成したので、左右のケーブル２２の
緊張度合が同じでない場合にはボルト３０を緩め、前窓
側ブラケット金具２７とケーブル側ブラケット金具２８
の連結をずらして調整することができる。それにより、
前窓１７の左右にこじれる状態を解消して、円滑な開閉
動作を行うことができる。Further, in the present invention, since the bolt hole opened in the cable side bracket fitting 28 is formed in the elongated hole 29 parallel to the axial direction of the cable 22, the left and right cables 22 do not have the same tension. Loosen the bolt 30 to remove the front window side bracket bracket 27 and the cable side bracket bracket 28.
Can be adjusted by shifting the connection. Thereby,
It is possible to eliminate the state where the front window 17 is twisted to the left and right and perform a smooth opening / closing operation.

【０００９】また本発明では，ローラガイドレール２０
とケーブルガイドレール２１を平行な上下位置状態に連
設しているので、そのガイド中心間の間隔が寸法ｐだけ
存在するが、２個の下部ローラ１８’を並設した。その
２個の下部ローラ１８’と１８’の転動中心線０ー０
（図４に示す）は、ケーブル２２の軸心と平行、かつ間
隔寸法を寸法ｐに設定したので、ケーブル２２の巻上操
作を行ったとき前窓１７を円滑に上昇させることができ
る。Further, according to the present invention, the roller guide rail 20
Since the cable guide rail 21 and the cable guide rail 21 are continuously arranged in parallel in the vertical position, the distance between the guide centers is equal to the dimension p, but two lower rollers 18 'are arranged side by side. Rolling center line 0-0 of the two lower rollers 18 'and 18'
4 (shown in FIG. 4) is set in parallel with the axis of the cable 22 and the space dimension is set to the dimension p, so that the front window 17 can be smoothly raised when the winding operation of the cable 22 is performed.

【００１０】[0010]

【発明の効果】従来より種々勘案されている建設機械用
キャブの前窓開閉装置では、前窓の下端側部にケーブル
の前端末部を連結せしめたものがある。しかし、たとえ
ば破損事故をおこした前窓を取付け替えするためにその
前窓をケーブル連結部より容易に取外すことのできる手
段、左右のケーブルの緊張度合を調整する手段、あるい
は下部のローラを十分円滑に転動せしめる手段が講じら
れていなかった。しかし本発明の前窓開閉装置では、た
とえば前窓が破損事故をおこして取付け替えをする場合
には、前窓の下端側部に固着した前窓側ブラケット金具
と、ケーブルの前端末部を固定しているケーブル側ブラ
ケット金具とを締付けているボルトを緩めて取外す。そ
れにより前窓側ブラケット金具とケーブル側ブラケット
金具の連結は解除されるので、前窓を手動によりローラ
ガイドレールに沿って自由に上下移動させ、取外しの準
備を行うことができる。またケーブル側ブラケット金具
に開穿するボルト穴をケーブルの軸心方向と平行な長穴
に形成したので、左右のケーブルの緊張度合が同じでな
い場合にはボルトを緩め、前窓側ブラケット金具とケー
ブル側ブラケットの連結をずらして調整することができ
る。それにより、前窓の左右にこじれる状態を解消し
て、円滑な開閉動作を行うことができる。また本発明で
は下部ローラを左右にそれぞれ２個ずつ並設し、その２
個の下部ローラの転動中心線と、ケーブルの軸心を平行
に設定したので、ケーブルの巻上操作を行ったとき前窓
を円滑に上昇させることができる。As for the front window opening / closing device of the cab for construction machinery which has been variously considered, there is a device in which the front end portion of the cable is connected to the lower end side portion of the front window. However, for example, in order to replace the front window that caused a damage accident, the front window can be easily removed from the cable connection, the tension between the left and right cables can be adjusted, or the lower roller can be made smooth enough. There was no means to roll it. However, in the front window opening / closing device of the present invention, for example, when the front window is damaged and is to be replaced, the front window side bracket fitting fixed to the lower end side portion of the front window and the front end portion of the cable are fixed. Loosen the bolts that fasten the cable side bracket bracket and remove. As a result, the connection between the front window-side bracket fitting and the cable-side bracket fitting is released, so that the front window can be manually moved freely up and down along the roller guide rails to prepare for removal. In addition, the bolt hole that is opened in the cable side bracket is formed in a long hole that is parallel to the axial direction of the cable.If the tension of the left and right cables is not the same, loosen the bolt to remove the front window side bracket and the cable side. The brackets can be adjusted by shifting the connection. As a result, the state in which the front window is twisted to the left and right can be eliminated, and a smooth opening / closing operation can be performed. Further, in the present invention, two lower rollers are arranged side by side on the left and right sides respectively, and
Since the rolling center line of each lower roller and the axis of the cable are set parallel to each other, the front window can be smoothly raised when the cable winding operation is performed.

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

【図１】本発明の前窓開閉装置をそなえたキャブの要部
側面図である。FIG. 1 is a side view of a main part of a cab provided with a front window opening / closing device of the present invention.

【図２】図１のＢーＢより見た要部断面図である。FIG. 2 is a cross-sectional view of a main part seen from BB in FIG.

【図３】本発明におけるケーブルの配索構成を示す斜視
図である。FIG. 3 is a perspective view showing a cable routing configuration in the present invention.

【図４】図３のＣより見た要部内側側面図である。FIG. 4 is a side view of the inside of a main part as viewed from C of FIG.

【図５】図４のＤより見た図である。5 is a view seen from D in FIG. 4. FIG.

【図６】図４のＥより見た図である。FIG. 6 is a view seen from E in FIG. 4;

【図７】図５のＦーＦより見た図である。FIG. 7 is a diagram viewed from FF in FIG.

【図８】前窓側ブラケット金具とケーブル側ブラケット
金具との連結を解除した状態を示す図である。FIG. 8 is a view showing a state in which the front window side bracket fitting and the cable side bracket fitting are disconnected.

【図９】図８のＧより見た図である。9 is a view seen from G in FIG. 8. FIG.

【図１０】従来技術の前窓開閉装置を示す側面図であ
る。FIG. 10 is a side view showing a conventional front window opening / closing device.

【図１１】図１０のＡーＡより見た図である。11 is a diagram viewed from AA in FIG.

【符号の説明】[Explanation of symbols]

１，１６ キャブ ２，１７ 前窓 ３，２０ ローラガイドレール ９，２２ ケーブル １８ 上部ローラ １８’ 下部ローラ ２１ ケーブルガイドレール ２６ 下部フレーム ２７ 前窓側ブラケット金具 ２８ ケーブル側ブラケット金具 ２９ 長穴 ３０ ボルト ３１ ケーブル端末止め金具 1,16 Cab 2,17 Front window 3,20 Roller guide rail 9,22 Cable 18 Upper roller 18 'Lower roller 21 Cable guide rail 26 Lower frame 27 Front window side bracket metal fitting 28 Cable side bracket metal fitting 29 Slotted hole 30 Bolt 31 Cable Terminal stopper

Claims (3)

【特許請求の範囲】[Claims] 【請求項１】 キャブの前面部に前窓を設け、そのキャ
ブの内壁面に平行な左右のローラガイドレールを配設
し、またそのローラガイドレールに沿ってケーブルガイ
ドレールを配設し、上記ローラガイドレールに沿って案
内されるローラを四隅にそなえた上記前窓を、ケーブル
ガイドレールを通したケーブルを介し動力源にて駆動す
るようにし、そのケーブルの前端末部を前窓の下端側部
に連結せしめ、キャブ前面の前窓閉止位置とキャブ天井
内面側の前窓開止位置との間で移動させて開閉を行うよ
うにした前窓開閉装置であって、前窓の下部フレームの
下端側部に前窓側ブラケット金具を固着し、かつその前
窓側ブラケット金具に下部ローラを取付け、またケーブ
ルの前端末部をケーブル側ブラケット金具に固定して取
付け、上記前窓側ブラケット金具とケーブル側ブラケッ
ト金具を着脱自在に連結したことを特徴とする建設機械
用キャブの前窓開閉装置。1. A front window is provided on a front portion of a cab, left and right roller guide rails are provided in parallel with an inner wall surface of the cab, and cable guide rails are provided along the roller guide rails. The front window with rollers at the four corners that are guided along the roller guide rail is driven by a power source via a cable that passes through the cable guide rail, and the front end of the cable is the lower end side of the front window. A front window opening and closing device which is connected to the front part of the cab and is opened and closed by moving it between a front window closing position on the front side of the cab and a front window opening position on the inner side of the cab ceiling. Secure the front window bracket to the lower end, attach the lower roller to the front window bracket, and fix the front end of the cable to the cable bracket to attach the front window bracket. A front window opening and closing device for a cab for construction machinery, characterized in that a bracket bracket and a bracket bracket on the cable side are detachably connected. 【請求項２】 特許請求の範囲請求項１記載の建設機械
用キャブの前窓開閉装置において、前窓側ブラケット金
具とケーブル側ブラケット金具とをボルト締付により連
結するようにし、前窓開閉時における左右のケーブルの
緊張度合を同じにするために、上記ブラケット金具のう
ち開穿されているボルト穴を、ケーブルの軸心方向と平
行な長穴に形成したことを特徴とする建設機械用キャブ
の前窓開閉装置。2. The front window opening / closing device for a cab for a construction machine according to claim 1, wherein the front window side bracket metal fitting and the cable side bracket metal fitting are connected by bolt tightening to open and close the front window. In order to equalize the tension of the left and right cables, the bolt holes that are opened in the bracket metal fittings are formed in long holes that are parallel to the axial direction of the cable. Front window opening and closing device. 【請求項３】 特許請求の範囲請求項１記載の建設機械
用キャブの前窓開閉装置において、前窓側ブラケット金
具に、下部ローラの転動方向がケーブルの軸心方向と平
行になるように、複数個の下部ローラを並設したことを
特徴とする建設機械用キャブの前窓開閉装置。3. The front window opening / closing device for a cab for a construction machine according to claim 1, wherein the rolling direction of the lower roller is parallel to the axial direction of the cable on the front window side bracket fitting. A front window opening / closing device for a cab for a construction machine, wherein a plurality of lower rollers are arranged side by side.
JP33800092A 1992-11-24 1992-11-24 Front window opening and closing device for cab for construction machinery Expired - Fee Related JP3244136B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP33800092A JP3244136B2 (en) 1992-11-24 1992-11-24 Front window opening and closing device for cab for construction machinery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP33800092A JP3244136B2 (en) 1992-11-24 1992-11-24 Front window opening and closing device for cab for construction machinery

Publications (2)

Publication Number Publication Date
JPH06156066A true JPH06156066A (en) 1994-06-03
JP3244136B2 JP3244136B2 (en) 2002-01-07

Family

ID=18314009

Family Applications (1)

Application Number Title Priority Date Filing Date
JP33800092A Expired - Fee Related JP3244136B2 (en) 1992-11-24 1992-11-24 Front window opening and closing device for cab for construction machinery

Country Status (1)

Country Link
JP (1) JP3244136B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100872951B1 (en) * 2001-04-17 2008-12-08 가부시키가이샤 고마쓰 세이사쿠쇼 Window opening and shutting mechanism for work vehicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100872951B1 (en) * 2001-04-17 2008-12-08 가부시키가이샤 고마쓰 세이사쿠쇼 Window opening and shutting mechanism for work vehicle

Also Published As

Publication number Publication date
JP3244136B2 (en) 2002-01-07

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