JP2008049947A

JP2008049947A - Brake device of truck

Info

Publication number: JP2008049947A
Application number: JP2006230433A
Authority: JP
Inventors: Kunio Hotta; 国男堀田
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-08-28
Filing date: 2006-08-28
Publication date: 2008-03-06

Abstract

<P>PROBLEM TO BE SOLVED: To provide a brake device of simple structure for a vehicle such as a truck and a wheelchair. <P>SOLUTION: A stop claw 20 for stopping a wheel is fitted to a turnable right and left bar adjacent to the wheels, and an operation rod 10 to be turned in the vertical direction is provided in the right and left bar 18, and a cam 15 is fitted to the operation rod 10. An operation board 25 is projected from the right and left bar 18, corresponding to the cam 15. When the operation rod 10 is turned, the cam is turned and abuts on the operation board 25 in the gourd-like longitudinal direction of the cam, and the operation board 25 is tilted to turn the right and left bar 18. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、台車、車椅子等の車両のブレーキ装置に関する。 The present invention relates to a brake device for a vehicle such as a carriage or a wheelchair.

従来、荷物を運搬する台車を例に取ると、３〜４個の車輪を付設し、ハンドルを押すことによってほぼ水平で走行して荷物を運ぶ。
しかしながら、傾斜道等に台車をおくと、台車は傾斜道を走行するため、安全装置として、ブレーキが必要であるが、多くは車輪自体を押圧する機構のものであり、そのブレーキ性能が不十分となる場合がある。そこで、確実に停止可能なブレーキ機構を有する台車の一例として、特開２００２−８１４７４号公報に開示してある。 Conventionally, taking a cart for carrying luggage as an example, 3 to 4 wheels are attached, and the luggage is carried almost horizontally by pushing the handle.
However, if a cart is placed on an inclined road or the like, the cart travels on an inclined road, so a brake is required as a safety device, but many of them are mechanisms that press the wheels themselves, and the braking performance is insufficient. It may become. Thus, as an example of a carriage having a brake mechanism that can be stopped reliably, Japanese Patent Laid-Open No. 2002-81474 is disclosed.

特開２００２−８１４７４号公報JP 2002-81474 A

前記特開２００２−８１４７４号公報には、一例のブレーキ付き台車が開示してあるが、本願は台車に備え付ける新たな機構のブレーキ装置を提供する。 Japanese Patent Application Laid-Open No. 2002-81474 discloses an example of a cart with a brake, but the present application provides a brake device having a new mechanism to be provided on the cart.

請求項１のブレーキ装置について実施例に基づいて説明すると、車輪に隣接して回動可能な左右棒１８が設けてあり、その左右棒１８に前記車輪を停止する停止爪２０が取付けてある。又、このブレーキ装置には、左右棒１８に垂直に回動可能な操作棒１０が設けてあると共に、この操作棒１０にはカム１５を取付けてある。そして、このカム１５に対応して前記左右棒１８から突設して操作板２５が設けてある。
そこで、操作棒１０を回動すると、カムも回動し、このカムの瓢箪形状の長手方向が操作板２５に当接して、操作板２５を傾動することによって左右棒１８を回動する。そのため、左右棒１８に取り付けてある停止爪２０が車輪に係止、離脱をして、ブレーキ状態と解除状態にすることができる。 The brake device according to claim 1 will be described based on an embodiment. A left and right bar 18 that is rotatable is provided adjacent to a wheel, and a stop claw 20 that stops the wheel is attached to the left and right bar 18. In addition, the brake device is provided with an operation rod 10 that can be rotated perpendicularly to the left and right rods 18, and a cam 15 is attached to the operation rod 10. An operation plate 25 is provided so as to protrude from the left and right bar 18 corresponding to the cam 15.
Therefore, when the operating rod 10 is rotated, the cam is also rotated, and the longitudinal direction of the hook shape of the cam comes into contact with the operating plate 25, and the operating plate 25 is tilted to rotate the left and right rods 18. Therefore, the stop pawls 20 attached to the left and right bars 18 can be engaged with and disengaged from the wheels so that the brake state and the release state can be achieved.

請求項１のブレーキ装置は、操作棒とカムと左右棒及び停止爪という簡便な構成でのブレーキ装置である。 The brake device according to claim 1 is a brake device having a simple configuration including an operation rod, a cam, a left and right rod, and a stop claw.

本発明の実施の形態を、裏面を示す図１、正面を示す図２、右側面を示す図３を参照して説明する。
台車の本体１は、フレーム枠で四角状に構成してあり、そのフレーム枠の上には、薄板スチールや樹脂等で製作の台板１ａが固定してある。
そして、その台板１ａの前方の裏面側には前車輪３ａ、後方の裏面側には自在輪の後車輪３ｂが取付けてある。 The embodiment of the present invention will be described with reference to FIG. 1 showing the back surface, FIG. 2 showing the front surface, and FIG. 3 showing the right side surface.
The main body 1 of the carriage is formed in a square shape with a frame frame, and a base plate 1a made of thin steel, resin, or the like is fixed on the frame frame.
And the front wheel 3a is attached to the back side of the front of the base plate 1a, and the rear wheel 3b of the free wheel is attached to the back side of the back.

前記台板１ａのほぼ中央には、前後に、操作棒１０が設置してある、そして、その操作棒１０の端部にはペタル１１が取り付けてあり、他端部には瓢箪状のカム１５が取り付けてある。
そして、前記ペタル１１の右側を足で踏むと、前記操作棒１０とカム１５が時計方向に回動し、ペタル１１の左側を足で踏むと、前記操作棒１０とカム１５は反時計方向に回動して元の状態に戻る。 An operation rod 10 is installed at the front and rear of the base plate 1a at the front and rear, a petal 11 is attached to the end of the operation rod 10, and a hook-shaped cam 15 is attached to the other end. Is attached.
Then, when the right side of the petal 11 is stepped on with the foot, the operation rod 10 and the cam 15 rotate clockwise, and when the left side of the petal 11 is stepped on with the foot, the operation rod 10 and the cam 15 are counterclockwise. Rotate to return to the original state.

前記後車輪３ｂと後車輪３ｂに隣接して、前車輪３ａ側には前記台板１ａの裏面側に、支持体１７を介して、左右棒１８が回動可能に取り付けてある。又、前記左右棒１８の両端には、後車輪３ｂに食い込んでブレーキ作動をする薄板長方形状の停止爪２０が取り付けてある。
又、後車輪３ｂに隣接する前記左右棒１８にはリンク体２１が固定してある。又、台板１ａには取付け体２３が取り付けてある。そして、前記リンク体２１に形成の取付け体２１ａと取付け体２３の間に、前記停止爪２０が、常時、後車輪３ｂから離脱する方向に付勢の弾性体（コイルバネ等）２２が、リンク体２１を介して取り付けてある。 Adjacent to the rear wheel 3b and the rear wheel 3b, a left and right bar 18 is rotatably attached to the front wheel 3a side on the back side of the base plate 1a via a support member 17. Further, at both ends of the left and right bar 18, a thin plate rectangular pawl 20 is attached which bites into the rear wheel 3b and operates a brake.
A link body 21 is fixed to the left and right bar 18 adjacent to the rear wheel 3b. An attachment body 23 is attached to the base plate 1a. And, between the attachment body 21a and the attachment body 23 formed on the link body 21, an elastic body (coil spring or the like) 22 urged in the direction in which the stop claw 20 is always detached from the rear wheel 3b is a link body. 21 is attached.

又、前記左右棒１８の中央部には、前車輪側に突出して操作板２５が取り付けてあり、その操作板２５には調整ネジ２７が取り付けてある。そして、前記カム１５は前記調整ネジ２７に当接可能になっていて、カム１５の長手方向が調整ネジ２７に当接すると、左右棒１８から突出して設けてある操作板２５に偏心荷重がかかることによって操作板２５が傾動して、この操作板２５の傾動が前記左右棒１８を回動させる。この結果、停止爪２０は後車輪３ｂに食い込んでブレーキ作動をする。 An operation plate 25 is attached to the central portion of the left and right bar 18 so as to protrude toward the front wheel, and an adjustment screw 27 is attached to the operation plate 25. The cam 15 can come into contact with the adjustment screw 27. When the longitudinal direction of the cam 15 comes into contact with the adjustment screw 27, an eccentric load is applied to the operation plate 25 provided protruding from the left and right bars 18. As a result, the operation plate 25 tilts, and the tilt of the operation plate 25 rotates the left and right bar 18. As a result, the stop pawl 20 bites into the rear wheel 3b and operates the brake.

尚、前記調整ネジ２７は、前記カム１５の回動する位置と左右棒１８の回動角、即ち、停止爪２０が後車輪３ｂに食い込む量の調整をなす。
又、前記停止爪２０は、常時は後車輪３ｂに食い込んでブレーキ作用をなす構成であるが、逆に、常時、後車輪３ｂから離脱するように構成してもよい。 The adjustment screw 27 adjusts the position where the cam 15 rotates and the rotation angle of the left and right bars 18, that is, the amount that the stop pawl 20 bites into the rear wheel 3b.
In addition, the stop pawl 20 is normally configured to bite into the rear wheel 3b and perform a braking action, but conversely, the stop pawl 20 may be configured to always be detached from the rear wheel 3b.

次に、前記構成の作用について説明すると、常時は、瓢箪状のカム１５の短手方向が調整ネジ２７に対応して、調整ネジ２７に当接しない状態であり、操作板２５には何等影響がないので、左右棒１８は回動しない。そのため、左右棒１８は前記弾性体２２の付勢力によって、停止爪２０は後車輪３ｂから離脱した状態を維持し、ブレーキ解除状態である。従って、台車は走行可能である。 Next, the operation of the above configuration will be described. Normally, the short direction of the bowl-shaped cam 15 corresponds to the adjustment screw 27 and is not in contact with the adjustment screw 27, and there is no influence on the operation plate 25. Therefore, the left / right bar 18 does not rotate. Therefore, the left and right bars 18 are in a brake released state while the stop pawl 20 is separated from the rear wheel 3b by the urging force of the elastic body 22. Therefore, the carriage can run.

一方、停止してブレーキを掛けるときには、前記ペタル１２の右側を足で踏むと、前記操作棒１０とカム１５が時計方向に回動する。このカム１５の回動によって、カム１５の長手方向が調整ネジ２７に当接して、操作板２５を傾動するので、左右棒１８は前記弾性体２２の付勢力に打ち勝って回動し、停止爪２０が後車輪３ｂに食い込み、ブレーキ状態になる。従って、この状態では、台車が坂道にいても、ブレーキがかかった状態であり、放置しても安全である。
尚、台車を走行可能にするためには、前記ペタル１２の左側を足で踏むと、前記操作棒１０とカム１５は反時計方向に回動して、ブレーキ解除状態になる。 On the other hand, when stopping and applying the brake, when the right side of the petal 12 is stepped on with a foot, the operation rod 10 and the cam 15 are rotated clockwise. As the cam 15 rotates, the longitudinal direction of the cam 15 abuts on the adjustment screw 27 and the operation plate 25 is tilted. 20 bites into the rear wheel 3b and the brake state is established. Therefore, in this state, even if the carriage is on a slope, the brake is applied and it is safe to leave it.
In order to allow the carriage to run, when the left side of the petal 12 is stepped on with a foot, the operation rod 10 and the cam 15 are rotated counterclockwise to be in a brake release state.

本願発明は、前記の構成で判るように、操作棒１０とカム１５と左右棒１８及び停止爪２０という簡便な構成でのブレーキ装置である。
又、本願のブレーキ装置は、停止爪２０を前車輪３ａに適用する構成であるが、後車輪３ｂに適用してもよい。又、本願の発明は、前記例に限定されず、常時はブレーキがかかっていない状態で、ペダルを踏むとブレーキがかかった状態にするという、前記例とは逆の構成であってもよい。又、操作をペタルではなく、手の操作で回動可能に構成する等、適宜、使用目的に応じて変更する。 The present invention is a brake device having a simple configuration of the operation rod 10, the cam 15, the left / right rod 18, and the stop claw 20 as can be seen from the above configuration.
Moreover, although the brake device of this application is the structure which applies the stop nail | claw 20 to the front wheel 3a, you may apply to the rear wheel 3b. Further, the invention of the present application is not limited to the above example, and may have a configuration opposite to the above example in which the brake is applied when the pedal is depressed while the brake is not applied at all times. In addition, the operation is appropriately changed according to the purpose of use, such as being configured to be rotatable by hand operation instead of petal.

台車の裏面図である。It is a reverse view of a trolley | bogie. 台車の正面図である。It is a front view of a trolley. 台車の右側面図である。It is a right view of a trolley.

Explanation of symbols

１台車の本体
１ａ台板
３ａ前車輪
３ｂ後車輪
１０操作棒
１１ペタル
１５カム
１８左右棒
２０停止爪
２２弾性体
1 body 1a base plate 3a front wheel 3b rear wheel 10 operation rod 11 petal 15 cam 18 left and right bar 20 stop claw 22 elastic body

Claims

A braking device for a truck that brakes and stops the wheels of the truck,
A left and right bar 18 that is rotatable adjacent to the wheel is provided, and a stop claw 20 that stops the wheel is attached to the left and right bar 18,
The left and right bar 18 is provided with an operation bar 10 that can be rotated vertically, and a cam 15 is attached to the operation bar 10.
Corresponding to the cam 15, the operation plate 25 is provided so as to project from the left and right bars 18.
The cart brake device, wherein the left and right rods 18 are rotated by the rotation of the cam accompanying the rotation of the operation rod 10, and the stop pawls 20 are engaged with and disengaged from the wheels.