JP2004268748A - Traveling brake device for working vehicle - Google Patents

Traveling brake device for working vehicle Download PDF

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Publication number
JP2004268748A
JP2004268748A JP2003062836A JP2003062836A JP2004268748A JP 2004268748 A JP2004268748 A JP 2004268748A JP 2003062836 A JP2003062836 A JP 2003062836A JP 2003062836 A JP2003062836 A JP 2003062836A JP 2004268748 A JP2004268748 A JP 2004268748A
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JP
Japan
Prior art keywords
brake
traveling
pedals
pedal shaft
pedal
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
JP2003062836A
Other languages
Japanese (ja)
Inventor
Kimitoshi Komeno
公敏 米野
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.)
Yanmar Co Ltd
Original Assignee
Yanmar Agricultural Equipment 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 Yanmar Agricultural Equipment Co Ltd filed Critical Yanmar Agricultural Equipment Co Ltd
Priority to JP2003062836A priority Critical patent/JP2004268748A/en
Publication of JP2004268748A publication Critical patent/JP2004268748A/en
Pending legal-status Critical Current

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  • Braking Elements And Transmission Devices (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a traveling brake device for a working vehicle which can simplify structure and facilitate the operationality by enabling the operation of right and left traveling brake pedals 11, 12 having the structure of single pedal shaft 13, and the operation of a parking brake lever 14, and improve the operationality of the operation of the right and left brake pedals 11, 12 and a parking brake lever 14 by enabling integral connection or the connection release of the traveling brake pedals 11, 12 with the parking brake lever 14. <P>SOLUTION: The traveling brake device is equipped with the right and left brake pedals 11, 12 operating the right and left traveling brakes 9, 10 at the pedal shaft 13. The parking brake lever 14 is connected to the right and left brake pedals 11, 12 through a cam member 28 and a connection body 38 provided on the pedal shaft 13. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明はトラクタや運搬車など作業車の走行ブレーキ装置に関する。
【0002】
【従来の技術】
左右後車軸のブレーキ装置を作動する左右ブレーキペダルと駐車ブレーキレバーとを支軸に固定する係合体を介し連結させ、駐車ブレーキレバーによって左右ブレーキペダルを踏み込んだ状態で固定するようにした技術がある。(例えば特許文献1参照)
【0003】
【特許文献1】特開2002−316550
【0004】
【発明が解決しようとする課題】
しかし乍ら上記手段の場合、左右ブレーキペダル用の支軸と駐車ブレーキレバー用の支軸の2つを必要とするなどして、部品点数も多く構造が複雑化するなどの不都合があった。
【0005】
【課題を解決するための手段】
したがって本発明は、左右の走行ブレーキを操作する左右ブレーキペダルをペダル軸に備えると共に、ペダル軸に設けるカム部材及び接続体を介し駐車ブレーキレバーを左右ブレーキペダルに連結させて、単一のペダル軸構造のもので左右の走行ブレーキペダル操作及び駐車ブレーキレバー操作を容易に可能とさせて構造の簡単化と操作性の容易化を図るものである。
【0006】
また、摩擦部材或いは爪係合部材で接続体を形成して、極めて簡単な手段で走行ブレーキペダルと駐車ブレーキレバーの一体的な連結或いは連結解除を可能とさせて左右ブレーキペダル及び駐車ブレーキレバー操作の操作性を向上させるものである。
【0007】
【発明の実施の形態】
以下、本発明の実施例を図面に基づいて詳述する。図1は全体の側面図を示し、図中1はトラクタであり、エンジン2を内設させるボンネット3両側に左右の前輪4・4を装設させ、前記ボンネット3後部に丸形操向ハンドル5を設け、該ハンドル5後方に運転席6を配置させ、運転席6両側外方に左右の後輪7・7を装設させる。
【0008】
図2に示す如く、機体後部のミッションケース8内の左右走行ブレーキ9・10を操作する足踏式の左右ブレーキペダル11・12をペダル13を備えると共に、左右ブレーキペダル11・12をブレーキ作動状態で固定する駐車ブレーキレバー14をペダル軸13に備えるもので、左ブレーキペダル11のペダルアーム15基端の左ブレーキ用ボス16を回転自在にペダル軸13に支持させ、右ブレーキペダル12のペダルアーム17基端の右ブレーキ用第1ボス18を係止ピン19を介しペダル軸13に一体連結させると共に、前記左走行ブレーキ9に左ブレーキリンク機構20を介しボス16の揺動アーム21を連結させている。
【0009】
また、前記ペダル軸13に係止ピン22を介し右ブレーキ用第2ボス23を固定させ、前記右走行ブレーキ10に右ブレーキリンク機構24を介し第2ボス23の揺動アーム25を連結させ、左ブレーキペダル11の足踏み操作時には直接的にボス16を回転させ、左走行ブレーキ9を作動させて左車輪7の回転を停止させると共に、右ブレーキペダル12の足踏み操作時には第1ボス18・ペダル軸13を介して第2ボス23を回転させ、右走行ブレーキ10を作動させて右後輪7の回転を停止させるように構成している。
【0010】
また、前記ペダル軸13は前後方向に平行に配設する車体の左右枠フレーム26・27に回転且つ左右移動自在に支持され、駐車ブレーキレバー14に連結するカム部材であるカム体28をピン29及び長孔30を介して左右移動自在に左右枠フレーム26・27間のペダル軸13に連結させ、カム体27の左側面に形成するカム面31を左枠フレーム26右側面のボール受け32に設けるボール33に当接させ、右ブレーキペダル12の足踏み操作時にはカム体28も回転させるように設けている。
【0011】
さらに、前記第1ボス18と左枠フレーム26間に圧縮バネ34を介設させ、左枠フレーム26に連結させる規制フレーム35を左ブレーキ用ボス16と第1ボス18間に介設させ、カム体28と右枠フレーム27間のペダル軸13に係止ピン36aを介し摩擦ボス36bを固定させ、該ボス36bの左側面にゴムなど摩擦部材で形成する摩擦プレート36を固設すると共に、左ブレーキ用ボス16の左側面より一定隙間を有してペダル軸13にゴムなど摩擦部材で形成する摩擦プレート37を固設させている。
【0012】
そして、左右ブレーキペダル11・12を踏みながら駐車ブレーキレバー14を操作するとき、カム体28はボール33とカム面31との当接によるカム作用でペダル軸13上を右方向に移動しながら回転し、カム体28の右側面が摩擦プレート36を介して摩擦ボス36bに連結して、摩擦ボス36bを回転させると同時にペダル軸13をバネ34に抗し右方向に移動させる。
【0013】
さらに、ペダル軸13の右方向の移動で摩擦プレート37が左ブレーキ用ボス16に押し付けられるとき、左ブレーキ用ボス16の回転を規制し左右ブレーキペダル11・12をブレーキ作動状態で位置保持させる。
【0014】
このように、前記摩擦プレート36・37を左右ブレーキペダル11・12と駐車ブレーキレバー14との接続体38に設け、ペダル軸13上に設けるカム体28のカム作用で駐車ブレーキレバー14のブレーキ操作時には左右ブレーキペダル11・12にレバー14を連結させてペダル11・12をブレーキ作動位置に位置保持させるものである。
【0015】
なお上述実施例にあっては、摩擦プレート36・37を接続体38に用いて左右ブレーキペダル11・12の位置規制を行う構成を示したが、図4に示す如く、例えば摩擦プレート37を爪39を有する爪係合部材40に設けて接続体38として爪係合部材40を用い、ボス16の切欠溝41に爪39を係合させてプレート40とボス16を連結する構成でも良い。
【0016】
図5、図6に示すものは、走行用油圧式無段変速機構42の前進及び後進用正義よアーム41・44同一軸45に備え、前後進ペダル46・47のボス46a・47aを同一のペダル軸48上に配置させ、前記ボス46a・47aに180度位置を異ならせる操作アーム49・50を設け、制御アーム43・44にロッド51・52を介し操作アーム49・50を連結させると共に、隣接させる前後進ペダル46・47の高さを異ならせて、前後進ペダル46・47の相互の誤操作を防止させ、前後進操作機構の構造の簡単化を図るように構成している。
【0017】
【発明の効果】
以上実施例から明らかなように本発明は、左右の走行ブレーキ9・10を操作する左右ブレーキペダル11・12をペダル軸13に備えると共に、ペダル軸13に設けるカム部材28及び接続体38を介し駐車ブレーキレバー14を左右ブレーキペダル11・12に連結させたものであるから、単一のペダル軸13構造のもので左右の走行ブレーキペダル11・12操作及び駐車ブレーキレバー14操作を容易に可能とさせて構造の簡単化と操作性の容易化を図ることができるものである。
【0018】
また、摩擦部材36・37或いは爪係合部材40で接続体38を形成したものであるから、極めて簡単な手段で走行ブレーキペダル11・12と駐車ブレーキレバー14の一体的な連結或いは連結解除を可能とさせて左右ブレーキペダル11・12及び駐車ブレーキレバー14操作の操作性を向上させることができるものである。
【図面の簡単な説明】
【図1】トラクタの側面図。
【図2】ブレーキペダル部の平面説明図。
【図3】ペダル軸部の説明図。
【図4】接続体の他の説明図。
【図5】前後進ペダル部の側面説明図。
【図6】前後進ペダル部の平面説明図。
【符号の説明】
9・10 走行ブレーキ
11・12 ブレーキペダル
13 ペダル軸
14 駐車ブレーキレバー
28 カム体(カム部材)
36・37 摩擦プレート(摩擦部材)
38 接続体
40 爪係合部材
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a traveling brake device for a work vehicle such as a tractor or a transport vehicle.
[0002]
[Prior art]
There is a technology in which the left and right brake pedals for operating the brake devices for the left and right rear axles and the parking brake lever are connected via an engaging body that is fixed to the support shaft, and the parking brake lever fixes the left and right brake pedals in a depressed state. . (For example, see Patent Document 1)
[0003]
[Patent Document 1] JP-A-2002-316550
[0004]
[Problems to be solved by the invention]
However, in the case of the above-mentioned means, there are inconveniences, such as the necessity of two support shafts for the left and right brake pedals and the support shaft for the parking brake lever, and the increase in the number of parts and the complexity of the structure.
[0005]
[Means for Solving the Problems]
Therefore, the present invention provides a left and right brake pedal for operating the left and right traveling brakes on a pedal shaft, and connects a parking brake lever to the left and right brake pedals via a cam member and a connector provided on the pedal shaft to form a single pedal shaft. The structure is such that the left and right traveling brake pedal operations and the parking brake lever operation can be easily performed, thereby simplifying the structure and operability.
[0006]
Further, a connecting member is formed by a friction member or a pawl engaging member, and the traveling brake pedal and the parking brake lever can be integrally connected or disconnected by extremely simple means, so that the left and right brake pedals and the parking brake lever can be operated. The operability of the device is improved.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a side view of the whole, in which 1 is a tractor, in which left and right front wheels 4, 4 are mounted on both sides of a hood 3 in which an engine 2 is installed. The driver's seat 6 is disposed behind the steering wheel 5, and left and right rear wheels 7.7 are provided outside both sides of the driver's seat 6.
[0008]
As shown in FIG. 2, foot-operated left and right brake pedals 11 and 12 for operating left and right traveling brakes 9 and 10 in a transmission case 8 at the rear of the fuselage are provided with pedals 13, and the left and right brake pedals 11 and 12 are in a brake operating state. The left brake boss 16 at the base end of the pedal arm 15 of the left brake pedal 11 is rotatably supported by the pedal shaft 13, and the parking brake lever 14 is fixed to the pedal shaft 13. The first boss 18 for the right brake at the base end 17 is integrally connected to the pedal shaft 13 via the locking pin 19, and the swing arm 21 of the boss 16 is connected to the left traveling brake 9 via the left brake link mechanism 20. ing.
[0009]
Further, a second boss 23 for right brake is fixed to the pedal shaft 13 via a locking pin 22, and a swing arm 25 of the second boss 23 is connected to the right traveling brake 10 via a right brake link mechanism 24, When the left brake pedal 11 is depressed, the boss 16 is rotated directly, the left travel brake 9 is actuated to stop the rotation of the left wheel 7, and when the right brake pedal 12 is depressed, the first boss 18 and the pedal shaft are actuated. 13, the second boss 23 is rotated, the right traveling brake 10 is operated, and the rotation of the right rear wheel 7 is stopped.
[0010]
The pedal shaft 13 is supported by left and right frame frames 26 and 27 of the vehicle body disposed in parallel in the front-rear direction so as to be rotatable and movable left and right, and a cam body 28 which is a cam member connected to the parking brake lever 14 is provided with a pin 29. The cam surface 31 formed on the left side of the cam body 27 is connected to the ball receiver 32 on the right side of the left frame 26 by movably connecting the pedal shaft 13 between the left and right frame frames 26 and 27 via the long holes 30. The cam body 28 is provided so as to be brought into contact with the ball 33 to be provided and to rotate when the right brake pedal 12 is stepped on.
[0011]
Further, a compression spring 34 is provided between the first boss 18 and the left frame 26, and a regulating frame 35 connected to the left frame 26 is provided between the left brake boss 16 and the first boss 18, and A friction boss 36b is fixed to the pedal shaft 13 between the body 28 and the right frame 27 via a locking pin 36a, and a friction plate 36 formed of a friction member such as rubber is fixed to the left side of the boss 36b. A friction plate 37 made of a friction member such as rubber is fixed to the pedal shaft 13 with a certain clearance from the left side surface of the brake boss 16.
[0012]
When the parking brake lever 14 is operated while depressing the left and right brake pedals 11 and 12, the cam body 28 rotates while moving rightward on the pedal shaft 13 by the cam action by the contact between the ball 33 and the cam surface 31. Then, the right side surface of the cam body 28 is connected to the friction boss 36b via the friction plate 36 to rotate the friction boss 36b and simultaneously move the pedal shaft 13 rightward against the spring 34.
[0013]
Further, when the friction plate 37 is pressed against the left brake boss 16 by the rightward movement of the pedal shaft 13, the rotation of the left brake boss 16 is restricted and the left and right brake pedals 11 and 12 are held in the brake operating state.
[0014]
As described above, the friction plates 36 and 37 are provided on the connecting body 38 between the left and right brake pedals 11 and 12 and the parking brake lever 14, and the brake operation of the parking brake lever 14 is performed by the cam action of the cam body 28 provided on the pedal shaft 13. Occasionally, the lever 14 is connected to the left and right brake pedals 11 and 12 to hold the pedals 11 and 12 at the brake operating position.
[0015]
In the above-described embodiment, the configuration in which the position of the left and right brake pedals 11 and 12 is regulated by using the friction plates 36 and 37 as the connection body 38 has been described. However, as shown in FIG. The plate 40 and the boss 16 may be connected to each other by providing the claw engagement member 40 having the 39 and using the claw engagement member 40 as the connector 38 and engaging the claw 39 with the notch groove 41 of the boss 16.
[0016]
5 and 6 are provided on the same shaft 45 as the arms 41 and 44 for the forward and reverse movements of the hydraulic stepless speed change mechanism 42 for traveling, and the bosses 46a and 47a of the forward and backward pedals 46 and 47 are the same. Arranged on the pedal shaft 48, the bosses 46a and 47a are provided with operation arms 49 and 50 for different positions by 180 degrees, and the control arms 43 and 44 are connected to the operation arms 49 and 50 via rods 51 and 52, The height of the forward / backward movement pedals 46/47 adjacent to each other is made different to prevent erroneous operation of the forward / backward movement pedals 46/47, thereby simplifying the structure of the forward / backward operation mechanism.
[0017]
【The invention's effect】
As is clear from the above embodiment, the present invention provides the left and right brake pedals 11 and 12 for operating the left and right traveling brakes 9 and 10 on the pedal shaft 13 and the cam member 28 and the connector 38 provided on the pedal shaft 13. Since the parking brake lever 14 is connected to the left and right brake pedals 11 and 12, the left and right traveling brake pedals 11 and 12 and the parking brake lever 14 can be easily operated with a single pedal shaft 13 structure. Thus, simplification of the structure and operability can be achieved.
[0018]
Further, since the connecting body 38 is formed by the friction members 36 and 37 or the pawl engaging member 40, the connection or disconnection of the traveling brake pedals 11 and 12 and the parking brake lever 14 can be integrally performed by extremely simple means. The operability of operating the left and right brake pedals 11 and 12 and the parking brake lever 14 can be improved.
[Brief description of the drawings]
FIG. 1 is a side view of a tractor.
FIG. 2 is an explanatory plan view of a brake pedal unit.
FIG. 3 is an explanatory view of a pedal shaft.
FIG. 4 is another explanatory view of the connection body.
FIG. 5 is an explanatory side view of a forward-reverse pedal unit.
FIG. 6 is an explanatory plan view of a forward-reverse pedal unit.
[Explanation of symbols]
9 ・ 10 Travel brake 11 ・ 12 Brake pedal 13 Pedal shaft 14 Parking brake lever 28 Cam body (cam member)
36/37 Friction plate (friction member)
38 connector 40 claw engaging member

Claims (2)

左右の走行ブレーキを操作する左右ブレーキペダルをペダル軸に備えると共に、ペダル軸に設けるカム部材及び接続体を介し駐車ブレーキレバーを左右ブレーキペダルに連結させたことを特徴とする作業車の走行ブレーキ装置。A traveling brake device for a work vehicle, comprising: a left and right brake pedal for operating left and right traveling brakes on a pedal shaft; and a parking brake lever connected to the left and right brake pedals via a cam member and a connector provided on the pedal shaft. . 摩擦部材或いは爪係合部材で接続体を形成したことを特徴とする作業車の走行ブレーキ装置。A traveling brake device for a working vehicle, wherein a connecting body is formed by a friction member or a pawl engaging member.
JP2003062836A 2003-03-10 2003-03-10 Traveling brake device for working vehicle Pending JP2004268748A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003062836A JP2004268748A (en) 2003-03-10 2003-03-10 Traveling brake device for working vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003062836A JP2004268748A (en) 2003-03-10 2003-03-10 Traveling brake device for working vehicle

Publications (1)

Publication Number Publication Date
JP2004268748A true JP2004268748A (en) 2004-09-30

Family

ID=33124591

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003062836A Pending JP2004268748A (en) 2003-03-10 2003-03-10 Traveling brake device for working vehicle

Country Status (1)

Country Link
JP (1) JP2004268748A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014031117A (en) * 2012-08-03 2014-02-20 Kubota Corp Working vehicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014031117A (en) * 2012-08-03 2014-02-20 Kubota Corp Working vehicle

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