JP2016061417A - Vehicle brake mechanism - Google Patents

Vehicle brake mechanism Download PDF

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Publication number
JP2016061417A
JP2016061417A JP2014192043A JP2014192043A JP2016061417A JP 2016061417 A JP2016061417 A JP 2016061417A JP 2014192043 A JP2014192043 A JP 2014192043A JP 2014192043 A JP2014192043 A JP 2014192043A JP 2016061417 A JP2016061417 A JP 2016061417A
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Prior art keywords
brake
cam
brake shoe
wheel
shaft
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JP2014192043A
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JP6473903B2 (en
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国男 堀田
Kunio Hotta
国男 堀田
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Hotta & Co Ltd
Hotta Co Ltd
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Hotta & Co Ltd
Hotta Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a vehicle brake mechanism.SOLUTION: A brake mechanism is composed of a wheel 2 and a brake shoe 30, and includes a drive joint plate 18 that oscillates around a fixed shaft 22, a spring 20 that always pulls the drive joint plate 18 clockwise, a camshaft 22 that attaches a cam 28 to the drive joint plate 18, and the brake shoe 30 corresponding to the wheel 2 that is provided so as to be able to reciprocate as well as to come into contact with the cam 28.SELECTED DRAWING: Figure 1

Description

本発明は、車両である台車、車椅子等のブレーキ機構に関する。   The present invention relates to a brake mechanism for vehicles such as a cart and a wheelchair.

従来、荷物を運搬する台車におけるブレーキ機構は、例えば、ブレーキシューをワイヤーに連結して、ブレーキをかけるときにはワイヤーを引張ってブレーキをかける機構がある。
又、特許文献1の図3には、キャスタフレーム(11)に、回動可能で、且つ、常時、バネの引っ張り力で後車輪に当接してロック状態であるブレーキシュー(15、15a)を取付け、回動可能なカム(21)を取付け、前記カム(21)の回動位置によって、前記ブレーキシューを後車輪に対してアンロック状態にする旨の記載がある。
2. Description of the Related Art Conventionally, a brake mechanism in a cart for carrying a load includes, for example, a mechanism in which a brake shoe is connected to a wire and the wire is pulled to apply the brake when the brake is applied.
Further, in FIG. 3 of Patent Document 1, a brake shoe (15, 15a) that is pivotable and is always in contact with the rear wheel by a spring pulling force and is locked to the caster frame (11). There is a description that an attachable and rotatable cam (21) is attached, and the brake shoe is unlocked with respect to the rear wheel by the turning position of the cam (21).

特開2011−33163号公報JP 2011-33163 A

前記特許文献1に開示のカムを使用のブレーキ機構は、ロック、アンロック状態にする機構であり、回転する車輪を円滑にカムを介してブレーキシューでブレーキをかける機構ではない。
そこで、本願発明では、従来と異なる、簡便な構成のブレーキ機構を備える車両を提供する。
The brake mechanism using a cam disclosed in Patent Document 1 is a mechanism for locking and unlocking, and is not a mechanism for smoothly braking a rotating wheel with a brake shoe via a cam.
Therefore, the present invention provides a vehicle including a brake mechanism having a simple configuration different from the conventional one.

請求項1の車輪をブレーキシューでブレーキをかけるブレーキ機構は、固定軸に揺動可能に駆動結板を設け、駆動結板を常時、時計方向に回動するバネを取付け、前記駆動結板にカムを取付けのカム軸を設け、前記車輪に対応するブレーキシューを往復動可能に、且つ、前記カムに接触可能に設け、前記駆動結板を揺動操作することによって、前記カムを介してブレーキシューを往復動させて、車輪にブレーキをかける状態とかけない状態にする。
又、請求項2ブレーキ機構は、前記カムに凸部を形成し、その凸部に接触するブレーキシューに凸状の弓部を形成する。
A brake mechanism for braking a wheel with a brake shoe according to claim 1 is provided with a drive connecting plate swingably on a fixed shaft, and a spring that always rotates clockwise is attached to the drive connecting plate. A cam shaft with a cam is provided, a brake shoe corresponding to the wheel is provided so as to be able to reciprocate and contact with the cam, and a brake is operated via the cam by swinging the drive coupling plate. The shoe is reciprocated so that the wheel is braked and not braked.
In the brake mechanism of the present invention, a convex portion is formed on the cam, and a convex bow portion is formed on the brake shoe that contacts the convex portion.

本願発明の請求項1のブレーキ機構は、カムを介してブレーキシューを作動してブレーキをかけるため、より大きな力でブレーキをかけることができる。
又、請求項2のブレーキ機構は、カムの凸部とブレーキシューの凸状の弓部を介してブレーキシューを移動させるので、同じブレーキシューの移動量に対してカムの揺動角を小さくすることができる。
Since the brake mechanism according to claim 1 of the present invention operates the brake shoe via the cam to apply the brake, the brake can be applied with a larger force.
In the brake mechanism of the second aspect, the brake shoe is moved through the convex portion of the cam and the convex bow portion of the brake shoe, so that the cam swing angle is reduced with respect to the same movement amount of the brake shoe. be able to.

ブレーキがかかっていない状態の車輪とブレーキ機構の正面図である。It is a front view of a wheel and a brake mechanism in a state where the brake is not applied. 車輪とブレーキ機構の平面図である。It is a top view of a wheel and a brake mechanism. (A)はブレーキがかかっていない状態のA〜A断面図、(B)はブレーキがかかっている状態のA〜A断面図である。(A) is AA sectional drawing in the state where the brake is not applied, (B) is AA sectional drawing in the state where the brake is applied. ブレーキがかかっている状態の車輪とブレーキ機構の正面図である。It is a front view of a wheel and a brake mechanism in a state where a brake is applied.

本発明のブレーキ機構の実施の形態について、車両の例示として台車を採用し、ブレーキがかかっていない状態の車輪とブレーキ機構の正面図である図1、車輪とブレーキ機構の平面図である図2、ブレーキがかかっていない状態のA〜A断面図である図3(A)を参照して説明する。
台車の台板(図示略)の下部には、フレーム3を介して固定車輪2が取付けてある。又、前記フレーム3には、L字状の取付体5が取り付けてあり、この取付体5には、両側に側板6を有する逆U字状の枠体が取り付けてある。
また、前記取付体5には、長孔81が形成してあり、後述するブレーキシュー30と車輪2との隙間調整を、前記枠体の調整後に調整ネジ80を介して行なう。
又、側板6にはL字板7が付設してあり、操作レバー(図示略)の操作により往復動するワイヤー10を挿通のガイド筒8が取り付けてある。
FIG. 1 is a front view of a wheel and a brake mechanism in a state in which a carriage is adopted as an example of a vehicle and the brake is not applied, and a plan view of the wheel and the brake mechanism in the embodiment of the brake mechanism of the present invention. A description will be given with reference to FIG. 3A which is a cross-sectional view taken along the line A-A in a state where the brake is not applied.
Fixed wheels 2 are attached to the lower part of a base plate (not shown) of the carriage via a frame 3. An L-shaped attachment body 5 is attached to the frame 3, and an inverted U-shaped frame body having side plates 6 on both sides is attached to the attachment body 5.
In addition, a long hole 81 is formed in the mounting body 5, and a gap adjustment between a brake shoe 30 and a wheel 2 described later is performed via an adjustment screw 80 after the frame body is adjusted.
Further, an L-shaped plate 7 is attached to the side plate 6, and a guide tube 8 for inserting a wire 10 that reciprocates by operation of an operation lever (not shown) is attached.

両側板6には固定軸22が取り付けてあると共に、この固定軸22には駆動結板18が揺動可能に取り付けてある。尚、この駆動結板18は揺動すればよいので、駆動結板18を結合の固定軸が回動可能に構成してもよい。
又、この駆動結板18の上端には、駆動軸12が取り付けてあり、側板6には駆動軸12が揺動可能な駆動孔13が穿設してある。又、前記ワイヤー10は、駆動軸12に固定のワイヤー固定具15を介して駆動軸12に連結してある。
又、前記駆動軸12と固定軸22の間の駆動結板18にはバネ20の端部が、他端部を側板6に設けてあり、バネ20の張設を介して、常時、図2に示す駆動結板18を固定軸22で時計方向の回動するように引張っている。
A fixed shaft 22 is attached to the side plates 6, and a drive connecting plate 18 is swingably attached to the fixed shaft 22. Since the drive plate 18 only needs to swing, the drive plate 18 may be configured such that the fixed shaft of the connection is rotatable.
A drive shaft 12 is attached to the upper end of the drive connecting plate 18, and a drive hole 13 through which the drive shaft 12 can swing is formed in the side plate 6. The wire 10 is connected to the drive shaft 12 via a wire fixture 15 fixed to the drive shaft 12.
Further, the drive connecting plate 18 between the drive shaft 12 and the fixed shaft 22 is provided with an end portion of a spring 20 and the other end portion on the side plate 6. The drive connecting plate 18 shown in FIG. 2 is pulled by the fixed shaft 22 so as to rotate clockwise.

前記駆動結板18の下部には、カム軸16が取り付けてあり、このカム軸16にはカム28が固定してあると共に、このカム28には前記固定軸22と、前記駆動軸12が回動可能に挿通してある。そして、このカム28は、前記駆動軸12及びカム軸16を介して前記固定軸22で揺動する。
又、側板6にはガイド軸24が取り付けてある一方、ブレーキシュー30にはブレーキシューガイド孔25が穿設してある。また、ブレーキシュー30は、前車輪2に対峙して設け、前記固定軸22とガイド軸24で支持され、ブレーキシューガイド孔25を介して往復動する。
尚、前記カム28の形状は、凸部28aを有する一方、凸部28aに対峙して接触するブレーキシュー30の形状は、前記凸部28aに向かって凸状の弓部30aである。このため、ブレーキをかけるときには、カム28の凸部28aの揺動により、その凸部28aと前記ブレーキシュー30の弓部30aに接触押圧して、ブレーキシュー30は移動するので、小さいカム28の揺動角でブレーキをかけることができる。
即ち、カムの凸部とブレーキシューの凸状の弓部との接触によって、ブレーキシュー30を移動させるので、同じブレーキシュー30の移動量に対してカム28の揺動角は小さくて済む。
又、前記ブレーキシュー30には、他端部を枠体に取付けのバネ50が取付けてあり、常時、ブレーキシュー30が車輪2から離反してブレーキがかからないようになっている。
A cam shaft 16 is attached to the lower portion of the drive connecting plate 18. A cam 28 is fixed to the cam shaft 16, and the fixed shaft 22 and the drive shaft 12 are rotated on the cam 28. It is movably inserted. The cam 28 swings on the fixed shaft 22 via the drive shaft 12 and the cam shaft 16.
A guide shaft 24 is attached to the side plate 6, while a brake shoe guide hole 25 is formed in the brake shoe 30. The brake shoe 30 is provided to face the front wheel 2, is supported by the fixed shaft 22 and the guide shaft 24, and reciprocates through the brake shoe guide hole 25.
The shape of the cam 28 has a convex portion 28a, while the shape of the brake shoe 30 that faces and contacts the convex portion 28a is a bow portion 30a that is convex toward the convex portion 28a. For this reason, when the brake is applied, the protrusion 28a of the cam 28 swings to contact and press the protrusion 28a and the bow 30a of the brake shoe 30, and the brake shoe 30 moves. The brake can be applied at the swing angle.
That is, since the brake shoe 30 is moved by contact between the convex portion of the cam and the convex bow portion of the brake shoe, the swing angle of the cam 28 can be small with respect to the same movement amount of the brake shoe 30.
The brake shoe 30 is provided with a spring 50 having the other end attached to the frame, so that the brake shoe 30 is always separated from the wheel 2 so that the brake is not applied.

次に、前記ブレーキ機構の作用について、図1.図2、図3(A)(B)、図4を参照して説明する。
ワイヤー10を操作レバー(図示略)で引張らない状態、即ち、ブレーキがかかっていない状態では、バネ50によって、ブレーキシュー30は車輪20から離脱方向に引っ張られ、且つ、バネ20によって、駆動結板18は固定軸22で時計方向に回動し、カム軸16を介してカム28も時計方向に回動して、ブレーキシュー30を車輪2の方向への押圧がなくなり、ブレーキがかかっていない状態を維持する(図1、図3(A))。
Next, the operation of the brake mechanism will be described with reference to FIGS. 1, 2, 3 </ b> A, 3 </ b> B, and 4.
When the wire 10 is not pulled by the operation lever (not shown), that is, when the brake is not applied, the brake shoe 30 is pulled away from the wheel 20 by the spring 50 and driven by the spring 20. The plate 18 is rotated clockwise by the fixed shaft 22, and the cam 28 is also rotated clockwise by the cam shaft 16, so that the brake shoe 30 is not pressed in the direction of the wheel 2 and the brake is not applied. The state is maintained (FIG. 1, FIG. 3 (A)).

一方、操作レバー(図示略)によってワイヤー10を引張ると、バネ20の引張り力及びブレーキシュー30を引っ張っているバネ50の引張り力に打ち勝って、駆動軸12を介して駆動結板18は固定軸22で反時計方向に回動し、カム軸16を介してカム28は反時計方向に回動する。
そして、カム28の凸部28aとブレーキシューの凸状の弓部30aが接触しながら回動して、レーキシュー30は固定軸22とガイド軸24で支持され、ブレーキシューガイド孔25を介して車輪2の方向に移動し、車輪2に接触押圧してブレーキがかかる状態となる(図4、図3(B))。
On the other hand, when the wire 10 is pulled by an operation lever (not shown), the pulling force of the spring 20 and the pulling force of the spring 50 pulling the brake shoe 30 are overcome, and the drive connecting plate 18 is fixed to the fixed shaft via the drive shaft 12. 22 rotates counterclockwise, and the cam 28 rotates counterclockwise via the cam shaft 16.
Then, the convex portion 28a of the cam 28 and the convex bow portion 30a of the brake shoe rotate while being in contact with each other, so that the rake shoe 30 is supported by the fixed shaft 22 and the guide shaft 24, and the wheel is passed through the brake shoe guide hole 25. It moves to the direction of 2, and it will be in the state which contacts and presses the wheel 2 and a brake is applied (FIG. 4, FIG. 3 (B)).

尚、前記機構は、操作レバー(図示略)によるワイヤー10を介してブレーキをかけるものであるが、操作レバー(図示略)の操作によるリンク機構を介して、駆動結板18を固定軸22で揺動する構成であってもよい。
又、前記機構は、常時、ブレーキがかかっていない状態であるが、バネ20、50及びカム28の形状を変えることによって、常時、ブレーキがかかっていて、操作によって、ブレーキが解除されて走行可能に構成することができる。
尚、バネ50は、ブレーキがかかっていない状態において、ブレーキシュー30と車輪2との間に隙間を積極的に形成して接触を回避するものであるが、必ずしも必要ではない。
The mechanism applies a brake via a wire 10 by an operating lever (not shown). However, the drive connecting plate 18 is fixed by a fixed shaft 22 via a link mechanism by operating the operating lever (not shown). It may be configured to swing.
The mechanism is not braked at all times, but by changing the shape of the springs 20 and 50 and the cam 28, the brake is always applied, and the brake can be released by operation and can travel. Can be configured.
Note that the spring 50 actively forms a gap between the brake shoe 30 and the wheel 2 to avoid contact in a state where the brake is not applied, but it is not always necessary.

2 車輪
10 ワイヤー
12 駆動軸
16 カム軸
18 駆動結板
20,50 バネ
22 固定軸
24 ガイド軸
25 ブレーキシューガイド孔
28 カム
28a 凸部
30 ブレーキシュー
30a 弓部
2 Wheel 10 Wire 12 Drive shaft 16 Cam shaft 18 Drive connection plate 20, 50 Spring 22 Fixed shaft 24 Guide shaft 25 Brake shoe guide hole 28 Cam 28a Convex portion 30 Brake shoe 30a Bow portion

Claims (2)

車輪をブレーキシューでブレーキをかける機構であって、
固定軸で揺動する駆動結板を設け、
駆動結板を常時、時計方向に回動するバネを取付け、
前記駆動結板にカムを取付けのカム軸を設け、
前記車輪に対峙するブレーキシューを往復動可能に、且つ、前記カムに接触可能に設け、
前記駆動結板を揺動操作することによって、前記カムを介してブレーキシューを往復動させて、車輪にブレーキをかける状態とかけない状態にすることを特徴とするブレーキ機構。
A mechanism that brakes wheels with brake shoes,
Provide a drive plate that swings around a fixed shaft,
Attach a spring that always rotates the drive plate clockwise.
A cam shaft is provided for attaching a cam to the drive plate,
A brake shoe facing the wheel is provided so as to reciprocate and contact with the cam;
A brake mechanism characterized in that a brake shoe is reciprocated through the cam to cause a brake to be applied to a wheel and not to be applied by swinging the drive coupling plate.
請求項1のブレーキ機構であって、
前記カムに凸部を形成し、
前記凸部に接触するブレーキシューに凸状の弓部を形成することを特徴とするブレーキ機構。
The brake mechanism of claim 1,
Forming a convex portion on the cam;
A brake mechanism characterized in that a convex bow is formed on a brake shoe that contacts the convex part.
JP2014192043A 2014-09-20 2014-09-20 Vehicle brake mechanism Active JP6473903B2 (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
JP2014192043A JP6473903B2 (en) 2014-09-20 2014-09-20 Vehicle brake mechanism

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JP2016061417A true JP2016061417A (en) 2016-04-25
JP6473903B2 JP6473903B2 (en) 2019-02-27

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5097729U (en) * 1974-01-10 1975-08-14
JPH0596571U (en) * 1992-05-29 1993-12-27 コレック株式会社 Brake device for vehicle
JP2003089356A (en) * 2001-07-13 2003-03-25 Nansin Co Ltd Braking device for conveying truck
JP2013092251A (en) * 2011-10-02 2013-05-16 Hotta Kk Moving vehicle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5097729U (en) * 1974-01-10 1975-08-14
JPH0596571U (en) * 1992-05-29 1993-12-27 コレック株式会社 Brake device for vehicle
JP2003089356A (en) * 2001-07-13 2003-03-25 Nansin Co Ltd Braking device for conveying truck
JP2013092251A (en) * 2011-10-02 2013-05-16 Hotta Kk Moving vehicle

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