JPS6255278A - Cab tilting device - Google Patents

Cab tilting device

Info

Publication number
JPS6255278A
JPS6255278A JP60196600A JP19660085A JPS6255278A JP S6255278 A JPS6255278 A JP S6255278A JP 60196600 A JP60196600 A JP 60196600A JP 19660085 A JP19660085 A JP 19660085A JP S6255278 A JPS6255278 A JP S6255278A
Authority
JP
Japan
Prior art keywords
cab
notch
bracket
lost motion
lifting mechanism
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.)
Pending
Application number
JP60196600A
Other languages
Japanese (ja)
Inventor
Yoriyo Sakuta
作田 順四
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.)
Jidosha Kiki Co Ltd
Original Assignee
Jidosha Kiki 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 Jidosha Kiki Co Ltd filed Critical Jidosha Kiki Co Ltd
Priority to JP60196600A priority Critical patent/JPS6255278A/en
Publication of JPS6255278A publication Critical patent/JPS6255278A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62DMOTOR VEHICLES; TRAILERS
    • B62D33/00Superstructures for load-carrying vehicles
    • B62D33/06Drivers' cabs
    • B62D33/063Drivers' cabs movable from one position into at least one other position, e.g. tiltable, pivotable about a vertical axis, displaceable from one side of the vehicle to the other
    • B62D33/067Drivers' cabs movable from one position into at least one other position, e.g. tiltable, pivotable about a vertical axis, displaceable from one side of the vehicle to the other tiltable
    • B62D33/07Drivers' cabs movable from one position into at least one other position, e.g. tiltable, pivotable about a vertical axis, displaceable from one side of the vehicle to the other tiltable characterised by the device for locking the cab in the tilted or in the driving position

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

PURPOSE:To prevent the abrupt forward tilting of a cab by forming a notch on a bracket below the cab and providing a coupling means couplable with this notch on a pivoting section between a lifting mechanism and a lost motion link. CONSTITUTION:A lost motion link 7 is provided between the piston rod 5 of a cylinder which is a lifting mechanism and the bracket 6 of a cab 2, and a coupling member 9 is provided on the pivoting section. This coupling member 9 can be inserted into the circular notch 8 of the bracket 6 when the cab 2 is in a traveling state, and it is coupled with the notch 8 when the cab 2 is rotated. Under this coupling state, even if the center of gravity of the cab 2 is shifted forward than the tilting axis, the abrupt forward tilting of the car 2 is prevented by the lock action. Accordingly, the abrupt forward tilting of the cab 2 can be prevented without increasing the fitting length of the cylinder 3.

Description

【発明の詳細な説明】 [産業上の利用分野] 本発明は、キャブオーバ型の大型車両に用いられるキャ
ブチルト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 cab tilt device used in a large cab-over type vehicle.

[従来の技術] キャブオーバ−型の大型トラック等では、エンジンルー
ムがキャブと呼ばれる運転台の下側に設けられており、
その内部のエンジン等の保守・点検を行なうために、こ
のキャブを持ち上げて前傾状態にさせるキャブチルト装
置が設けられている。
[Prior Art] In large cab-over type trucks, the engine room is located below the driver's cab, which is called a cab.
In order to perform maintenance and inspection of the internal engine, etc., a cab tilt device is provided that lifts the cab and tilts it forward.

このようなキャブチルト装置には、車両の走行中におけ
るキャブの振動・衝撃等を吸収して乗員の乗心地を向上
させるためにいわゆるロストモーション機構を設けてい
る(英国特許878,984)、このロストモーション
機構は、キャブ側とシャシ側との間において相対的な運
動を許容するものであることから、キャブを上昇させシ
ャシに対して前傾姿勢としたときに、このキャブの重心
がシャシに対するチルト中心を越えて車体の前方側へ移
動した場合、キャブが自重によって急激に前方に転倒し
てしまうことを防止しなければならない。
Such cab tilt devices are equipped with a so-called lost motion mechanism (British Patent No. 878,984) to absorb vibrations, shocks, etc. of the cab while the vehicle is running and improve passenger comfort. The motion mechanism allows relative movement between the cab side and the chassis side, so when the cab is raised and tilted forward with respect to the chassis, the center of gravity of the cab tilts with respect to the chassis. If the cab moves beyond the center to the front of the vehicle body, it must be prevented from rapidly tipping forward due to its own weight.

そこで、キャブの急激な前傾を防止する機能を備えたロ
ストモーション機構がすでに提案されている(特公昭5
5−45431号公報、特開昭58−112881号公
報等)。゛ [発明が解決しようとする問題点] 前者の装置では、キャブブラケットに回転可能に保持さ
れたトラニオンの軸受孔にピストンロッドを往復動可能
に嵌め合わせて、油圧ジヤツキをキャブに連結している
ので、シャシに対するキャブの自由運動を円滑にするこ
とに難があり、その上、充分な機械的強度のために、そ
のトラニオンを太くするか、高価な材料を使用しなけれ
ばならない。また、後者の装置では、ピストンロッドに
前傾防止用のピンを設けるために、シリンダ取付は長さ
が長くなり車両への取付けが困難になったり、取付位置
が制限される等の欠点があった。
Therefore, a lost motion mechanism with a function to prevent the cab from tilting rapidly forward has already been proposed (Special Publications Act 5).
5-45431, JP-A-58-112881, etc.). [Problem to be solved by the invention] In the former device, a piston rod is reciprocatably fitted into a bearing hole of a trunnion that is rotatably held in a cab bracket, thereby connecting a hydraulic jack to the cab. Therefore, it is difficult to facilitate free movement of the cab relative to the chassis, and the trunnion must be thick or made of expensive material for sufficient mechanical strength. In addition, in the latter device, since a pin is provided on the piston rod to prevent forward tilting, the length of the cylinder installation becomes longer, making it difficult to install on the vehicle, and the installation position is restricted. Ta.

本発明は以−Lの欠点を除くためになされたもので、従
来の油圧シリンダ等の昇降機構のままで、キャブの急激
な前傾を防止することができるキャブチルト装置を提供
するものである。
The present invention has been made to eliminate the following drawbacks, and provides a cab tilt device that can prevent the cab from rapidly tilting forward while using a conventional elevating mechanism such as a hydraulic cylinder.

[問題点を解決するための手段] 本発明に係るキャブチルト装置は、キャブの下部にブラ
ケットを取付けてこのブラケットに円弧状切欠きを形成
し、一方、A降機構とロストモーションリンクとの枢着
部に、キャブが走行状態位置にあるときには上記切欠き
に嵌入可能であり、キャブが回動した状態のときにはこ
の切欠きに係合する係合手段を設けたものである。
[Means for Solving the Problems] The cab tilt device according to the present invention includes a bracket attached to the lower part of the cab and an arcuate notch formed in the bracket, and a pivot point between the A lowering mechanism and the lost motion link. An engaging means is provided in the part, which can be fitted into the notch when the cab is in a running position, and which engages with the notch when the cab is in a rotating state.

[作用] 本発明に係るキャブチルト装置では、昇降機構を作動し
てキャブを」1昇させる際には、先ず、係合手段が切欠
きに嵌合し、その後キャブの前傾に伴なって係合手段は
切欠き内で回転してこの切欠きに係合し、キャブがさら
に前方へ傾斜することを防止する。
[Function] In the cab tilt device according to the present invention, when the lifting mechanism is operated to raise the cab by one inch, the engaging means first fits into the notch, and then engages as the cab tilts forward. The coupling means rotates within the notch and engages the notch to prevent the cab from tilting further forward.

[実施例] 以下図示実施例に基づいて本発明を説明する。[Example] The present invention will be explained below based on illustrated embodiments.

第1図は本発明の一実施例に係るキャブチルト装置の要
部を示す側面図であり。シャシ(1)上に載置されたキ
ャブ(2)は、その前部下方に設けられたチルト軸(図
示せず)を介してシャシ(1)に対し回動可能に支持さ
れている。シャシ(1)には油圧シリンダ(3)の基部
(3a)が支軸(4)を介して揺動可能に支持されてい
る。この油圧シリンダ(3)のピストンロッド(5)の
先端部には、キャブ(2)の下面に取付けたブラケット
(6)に一端(7a)が枢支されたロストモーションリ
ンク(7) ノ他m(7b’)が枢着されている。第1
図に示すキャブチルト装置の非作動時(すなわち車両の
走行状態位置にある場合)には、ピストンロッド(5)
の先端部はキャブ(2) (7)下面に対して間隙を隔
てて下方に位置しており、車両の走行に伴なう振動等を
ロストモーションリンク(7)の揺動により吸収しうる
ようになっている。
FIG. 1 is a side view showing essential parts of a cab tilt device according to an embodiment of the present invention. A cab (2) placed on the chassis (1) is rotatably supported by the chassis (1) via a tilt shaft (not shown) provided at the lower front of the cab (2). A base (3a) of a hydraulic cylinder (3) is swingably supported on the chassis (1) via a support shaft (4). At the tip of the piston rod (5) of this hydraulic cylinder (3), there is a lost motion link (7) whose one end (7a) is pivotally supported by a bracket (6) attached to the lower surface of the cab (2). (7b') is pivotally mounted. 1st
When the cab tilt device shown in the figure is not activated (i.e. when the vehicle is in the driving position), the piston rod (5)
The tip of the cab (2) (7) is located below the lower surface of the cab (2) (7) with a gap in between, so that vibrations caused by the running of the vehicle can be absorbed by the rocking motion of the lost motion link (7). It has become.

ブラケット(8)には、開口部(8a)を有する円形切
欠き(8)が形成されている。この切欠き(8)の中心
(8b)と、ブラケット(6)に枢支されているロスト
モーションリンク(7)の揺動中心(7c)との距離が
、ロストモーションリンク(7)とピストンロッド(5
)との枢着部の支点(7d)と上記揺動中心(7c)と
の距離に一致している。一方、ロス)・モーションリン
ク(7)とピストンロッドの枢着部には、ブラケット(
6)の切欠き(8)の円弧とほぼ一致する円形を両側か
ら平行に切断をした形状を有する係合部材(9)が設け
られている。この係合部材(9)の平行な切断面(8a
)は、図示非作動位置においてはほぼ垂直方向を向いて
いる。この切断面(8a)によって、上記油圧シリンダ
ー(3)のピストンロッド(5)が前進してロストモー
ションリンク(7)を揺動させた場合に、係合部材(9
)が切欠き(8)の開口部(8a)を通過して切欠き(
8)内に嵌合しうるようになっている。
A circular cutout (8) having an opening (8a) is formed in the bracket (8). The distance between the center (8b) of this notch (8) and the swing center (7c) of the lost motion link (7) pivotally supported on the bracket (6) is the distance between the lost motion link (7) and the piston rod. (5
) corresponds to the distance between the fulcrum (7d) of the pivoting part and the pivot center (7c). On the other hand, a bracket (
An engaging member (9) is provided which has a shape obtained by cutting a circular shape substantially matching the arc of the notch (8) in 6) in parallel from both sides. The parallel cut surface (8a) of this engaging member (9)
) is oriented substantially vertically in the illustrated inactive position. This cut surface (8a) allows the engaging member (9) to move forward when the piston rod (5) of the hydraulic cylinder (3) moves forward and swings the lost motion link (7).
) passes through the opening (8a) of the notch (8) and the notch (
8) so that it can be fitted inside.

以上の構成に係るキャブチルト装置の作動について説明
する。キャブチルト装置を作動させない車両の走行時に
は、第1図に実線で示す如く、油圧シリンダ(3)のピ
ストンロッド(5)が下降した位置にあり、ロッド(5
)の先端部とキャブ(2)の下面との間隙において、ロ
ストモーションリンク(7)によるロストモーション作
用が行なわれる。
The operation of the cab tilt device having the above configuration will be explained. When the vehicle is running without operating the cab tilt device, the piston rod (5) of the hydraulic cylinder (3) is in the lowered position, as shown by the solid line in FIG.
) A lost motion action is performed by the lost motion link (7) in the gap between the tip of the shaft and the lower surface of the cab (2).

キャブチルト装置を作動させる場合には、油圧シリンダ
(3)によってピストンロッド(5)を」1封させる。
When operating the cab tilt device, the piston rod (5) is closed by the hydraulic cylinder (3).

ピストンロッド(5)の先端部は、ロストモーションリ
ンク(7)の端部(7b)に枢着されているため、ロス
トモーションリンク(7)の揺動中心(7c)を支点に
回動し、係合部材(8)の切断面(8a)が切欠き(8
)の開口部(8a)を通過し、係合部材(9)は切欠き
(8)内に嵌合する。さらにピストロッド(5)が上昇
すると、係合部材(8)およびブラケット(6)を介し
てキャブ(2)が押上げられ、チルト軸を支点として前
方へと傾斜する。この過程で、係合部材(8)とブラケ
ット(6)の切欠き(8)とは、互いに嵌合した状態で
相対的に回転する。その結果、係合部材(8)の切断面
(9a)は切欠き(8)の開口部(8a)の位置から移
動し、係合部材(8)は切欠き(8)の円弧部に係合す
る(第1図に想像線で示す状態)。この状態では、キャ
ブ(2)の重心がチルト軸よりも前方へ移動した場合に
も、ロック作用によりキャブ(2)が急激に前傾するこ
とはない。
The tip of the piston rod (5) is pivoted to the end (7b) of the lost motion link (7), so it rotates around the swing center (7c) of the lost motion link (7), The cut surface (8a) of the engaging member (8) has a notch (8
), and the engaging member (9) fits into the notch (8). When the piston rod (5) further rises, the cab (2) is pushed up via the engaging member (8) and the bracket (6), and tilts forward about the tilt axis. In this process, the engagement member (8) and the notch (8) of the bracket (6) rotate relative to each other while being fitted into each other. As a result, the cut surface (9a) of the engagement member (8) moves from the position of the opening (8a) of the notch (8), and the engagement member (8) engages with the arcuate portion of the notch (8). (the state shown by the imaginary line in Figure 1). In this state, even if the center of gravity of the cab (2) moves forward of the tilt axis, the cab (2) will not tilt forward rapidly due to the locking action.

なお、上記実施例では、昇降機構として油圧シリンダー
を用いたが、これに限らず、その他の機械式アクチュエ
ータ等を用いることも可能である。
In the above embodiment, a hydraulic cylinder is used as the elevating mechanism, but the present invention is not limited to this, and other mechanical actuators or the like may also be used.

[発明の効果] 以上述べたように本発明によれば、従来の昇降機構の取
付は長さのままで、急激なキャブの前傾を防+にしうる
ロストモーション機構を備えたキャブチルト装置を得る
ことができる。
[Effects of the Invention] As described above, according to the present invention, a cab tilt device is provided which is equipped with a lost motion mechanism that can prevent a sudden forward tilting of the cab while maintaining the length of the conventional lifting mechanism. be able to.

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

第1図は、本発明の一実施例に係るキャブチルト装置の
作動状態を示す側面図である。 (1)・・・シャシ、   (2)・・・キャブ、(3
)・・・昇降機構(油圧シリンダ)、(6)・・・ブラ
ケット、 (7)・・・ロストモーションリンク、(8)・・・円
弧状切欠き、(8)・・・係合手段。
FIG. 1 is a side view showing the operating state of a cab tilt device according to an embodiment of the present invention. (1)...Chassis, (2)...Cab, (3
)... Lifting mechanism (hydraulic cylinder), (6)... Bracket, (7)... Lost motion link, (8)... Arc-shaped notch, (8)... Engaging means.

Claims (2)

【特許請求の範囲】[Claims] (1)シャシに対しチルト軸を介して回動可能に連結さ
れたキャブと、基端部がシャシに枢支され、先端部が進
退動可能な昇降機構と、一端がキャブに連結され、他端
が昇降機構の先端部に枢着されたロストモーションリン
クとを備えたキャブチルト装置において、キャブの下部
に取付けたブラケットに円弧状切欠きを形成するととも
に、上記昇降機構とロストモーションリンクとの枢着部
に、キャブが走行状態位置にあるときには上記円弧状切
欠きの開口部からこの切欠き内に嵌入可能であり、キャ
ブが回動した状態のときには円弧状切欠き内で回転して
この切欠きに係合する係合手段を設けたことを特徴とす
るキャブチルト装置。
(1) A cab rotatably connected to the chassis via a tilt shaft, a lifting mechanism whose base end is pivoted to the chassis and whose tip can move forward and backward, one end connected to the cab, and the other In a cab tilt device equipped with a lost motion link whose end is pivotally attached to the tip of the lifting mechanism, an arc-shaped notch is formed in the bracket attached to the lower part of the cab, and a circular notch is formed in the bracket attached to the lower part of the cab, and When the cab is in the running position, it can be inserted into the notch through the opening of the circular notch, and when the cab is rotated, it can be inserted into the notch by rotating within the circular notch. A cab tilt device characterized by being provided with an engaging means that engages with a notch.
(2)係合手段は、円弧状切欠きにほぼ一致する円弧の
一部を平行に切断した断面形状を有する部材であること
を特徴する特許請求の範囲第1項記載のキャブチルト装
置。
(2) The cab tilt device according to claim 1, wherein the engaging means is a member having a cross-sectional shape obtained by cutting parallel to a part of an arc that substantially coincides with the arc-shaped notch.
JP60196600A 1985-09-05 1985-09-05 Cab tilting device Pending JPS6255278A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60196600A JPS6255278A (en) 1985-09-05 1985-09-05 Cab tilting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60196600A JPS6255278A (en) 1985-09-05 1985-09-05 Cab tilting device

Publications (1)

Publication Number Publication Date
JPS6255278A true JPS6255278A (en) 1987-03-10

Family

ID=16360440

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60196600A Pending JPS6255278A (en) 1985-09-05 1985-09-05 Cab tilting device

Country Status (1)

Country Link
JP (1) JPS6255278A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1003632C2 (en) * 1996-07-18 1998-01-21 Applied Power Inc Vehicle with tilting cabin.
NL1011648C2 (en) * 1999-03-23 2000-09-27 Applied Power Inc Tilting mechanism.
KR100857341B1 (en) 2007-09-13 2008-09-05 현대자동차주식회사 Upper mounting device of cab tilting cylinder in heavy-duty truck

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1003632C2 (en) * 1996-07-18 1998-01-21 Applied Power Inc Vehicle with tilting cabin.
WO1998003389A1 (en) * 1996-07-18 1998-01-29 Applied Power Incorporated Vehicle with a tiltable cab
NL1011648C2 (en) * 1999-03-23 2000-09-27 Applied Power Inc Tilting mechanism.
WO2000056591A1 (en) * 1999-03-23 2000-09-28 Actuant Corporation Tilting device
KR100857341B1 (en) 2007-09-13 2008-09-05 현대자동차주식회사 Upper mounting device of cab tilting cylinder in heavy-duty truck

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