JP7096466B2 - Swivel caster brake mechanism - Google Patents

Swivel caster brake mechanism Download PDF

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JP7096466B2
JP7096466B2 JP2018017669A JP2018017669A JP7096466B2 JP 7096466 B2 JP7096466 B2 JP 7096466B2 JP 2018017669 A JP2018017669 A JP 2018017669A JP 2018017669 A JP2018017669 A JP 2018017669A JP 7096466 B2 JP7096466 B2 JP 7096466B2
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wire
brake
wheel
lower shafts
wheel mounting
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JP2019123487A (en
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国男 堀田
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ホッタ株式会社
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Description

本願発明は、自在キャスターの車輪のブレーキ機構に関する。 The present invention relates to a brake mechanism for wheels of universal casters.

現在、ショッピングカート等に使用されている自在キャスターのブレーキ機構としては、足踏みタイプの簡単なものが主流であるが、操作し辛くて使用されていない実態と、その一方で保有する台数が多く、より安価なものへの期待が大きい。 Currently, the mainstream brake mechanism for universal casters used in shopping carts is a simple foot-operated type, but it is difficult to operate and is not used, and on the other hand, many units are owned. There are great expectations for cheaper ones.

そんな背景に対応した、かけ忘れることが無く、操作がし易く、安価な自在キャスターのブレーキ機構が求められている。 In response to such a background, there is a demand for a brake mechanism for free casters that is easy to operate, easy to operate, and inexpensive.

こうした自在キャスターのブレーキ機構として、例えば特許文献1にはブレーキワイヤーを引くことでブレーキ片を車輪に圧接してブレーキを働かす方式の機構が開示されているが、ブレーキワイヤーを開放している状態ではブレーキが働いていない構成のため、かけ忘れの課題には不向きであり、また、特許文献2には車輪に凹凸を形成の停止体を取り付け、停止体の凹凸に歯合する爪体を昇降させてロックとアンロックを行うロック機構が開示されているが、部品点数も多く構造的にも複雑なため、コスト面で不向きである。 As a brake mechanism for such a universal caster, for example, Patent Document 1 discloses a mechanism in which a brake piece is pressed against a wheel to act on a brake by pulling a brake wire, but when the brake wire is open, the brake is activated. Since the brake is not working, it is not suitable for the problem of forgetting to apply, and in Patent Document 2, a stop body that forms unevenness is attached to the wheel, and the claw body that meshes with the unevenness of the stop body is raised and lowered. Although a locking mechanism for locking and unlocking is disclosed, it is not suitable in terms of cost because it has a large number of parts and is structurally complicated.

特願2008-191096Japanese Patent Application No. 2008-199096 特願2012-266775Japanese Patent Application No. 2012-266775

本願発明は、従来技術の課題を解決するためになされたもので、自在キャスターの旋回芯に上下軸を昇降可能に取り付け、前記上下軸にブレーキ片を弾性体の付勢力で車輪に圧接し、回転基台の旋回で回動する状態に取り付け、前記ブレーキ片をワイヤーで昇降して前記車輪の回転をロックまたはフリーにすることを特徴とする自在キャスターのブレーキ機構の提供。 The present invention has been made in order to solve the problems of the prior art. The upper and lower shafts are attached to the swivel core of the universal caster so as to be able to move up and down, and the brake pieces are pressed against the wheels by the urging force of the elastic body on the upper and lower shafts. Provided is a brake mechanism of a universal caster, which is mounted in a state of rotating by turning a rotary base and raises and lowers the brake piece with a wire to lock or free the rotation of the wheel.

カートやラックに固定するネジを有し、前記ネジを中心に車輪と車輪取付け枠を備えた回転基台が旋回する構成の自在キャスターにおいて、前記ネジの中心にガイド穴を貫通させて設け、前記ガイド穴にワイヤー穴を貫通させて設けてある上下軸を挿通し、前記上下軸に弾性体を挿通し、ブレーキ片を前記弾性体の付勢力で前記車輪に接触させ、同時に前記車輪取付け枠と同期して回動する状態で前記上下軸に取り付けて、前記ワイヤー穴にワイヤーを通して末端を吊り板に固定してある。
そして、この状態で前記ワイヤーを引くと前記ガイド穴に沿ってブレーキ片が上昇して車輪から離隔しブレーキは解除状態となり、緩めると前記ブレーキ片が下降して前記弾性体の付勢力により車輪に圧接しブレーキ状態となる。
In a universal caster having a screw for fixing to a cart or a rack and having a structure in which a rotating base having a wheel and a wheel mounting frame swivels around the screw, a guide hole is provided through the center of the screw. An upper and lower shaft provided by penetrating a wire hole through a guide hole is inserted, an elastic body is inserted through the upper and lower shaft, and a brake piece is brought into contact with the wheel by the urging force of the elastic body, and at the same time, with the wheel mounting frame. It is attached to the upper and lower shafts in a state of rotating in synchronization, and the end is fixed to the suspension plate by passing the wire through the wire hole.
Then, when the wire is pulled in this state, the brake piece rises along the guide hole to separate from the wheel and the brake is released, and when loosened, the brake piece descends to the wheel due to the urging force of the elastic body. It is in a braking state due to pressure contact.

本願発明の自在キャスターのブレーキ機構は、シンプルな機構とブレーキのロック状態を優先とした構成により、安全性、軽量化及び低価格化を実現したものである。 The brake mechanism of the universal caster of the present invention realizes safety, weight reduction, and price reduction by a simple mechanism and a configuration that prioritizes the locked state of the brake.

ブレーキがロック状態の正面図(部分断面)Front view (partial cross section) with the brake locked 図1の右側面図(部分断面)Right side view (partial cross section) of FIG. 図1の平面図Top view of FIG. ブレーキがフリー状態の正面図(部分断面)Front view (partial cross section) with the brake free

以下、本願発明の自在キャスターのブレーキ機構の実施形態について、自在キャスターのブレーキのロック状態の正面を示す図1と図1の右側面を示す図2と図1の平面を示す図3及びブレーキがフリー状態の正面を示す図4を参照して説明する。
自在キャスターの固定基台2にはカートやラックに固定するためのネジ3を備えてあり、そして、前記固定基台の下に左右一対の車輪取付け枠4を備える回転基台1がベアリングを介して回動可能に取り付けてあり、前記車輪取付け枠には回転軸6を挿通して車輪5が取り付けてある。
Hereinafter, with respect to the embodiment of the brake mechanism of the universal caster of the present invention, FIG. 1 showing the front of the locked state of the brake of the universal caster, FIG. 2 showing the right side surface of FIG. This will be described with reference to FIG. 4, which shows the front surface of the free state.
The fixing base 2 of the universal caster is provided with a screw 3 for fixing to a cart or a rack, and a rotating base 1 having a pair of left and right wheel mounting frames 4 under the fixing base is provided via a bearing. The wheel 5 is attached to the wheel mounting frame by inserting a rotating shaft 6 into the wheel mounting frame.

また、前記ネジの中心には、上下軸11を挿通するためのガイド穴8を貫通して設けてあり、また前記ガイド穴の上部にはワイヤー13を挿通するアウター15を支持するためのアウター支持穴7が設けてある。そして、前記ガイド穴に、ワイヤー穴14を貫通して設けてある上下軸11を挿通し、前記上下軸の下方には弾性体12を嵌めて、前記弾性体の上端をネジ3の下面に接触させてある。
その状態で、軸穴9aを設けたL字状のブレーキ片9において、付設のロック部9bを車輪5に接触させると共に、付設のスライド部9c、9dが左右一対の車輪取付け枠4の内壁4a、4bと僅かな隙間がある状態にして、前記弾性体を挟み込むようにして、前記ブレーキ片の軸穴9aに前記上下軸が挿入してある。
これにワイヤー13を上方よりアウター15を経由して、ワイヤー穴14に挿通すると共に、前記ワイヤーの末端を吊り板10に半田で固定してある。これにより、前記ブレーキ片は昇降及び前記車輪取付け枠と同期して回動することが可能となっている。
尚、前述の吊り板10への固定は半田付けに限らず、カシメや接着などの方法でも構わない。
Further, a guide hole 8 for inserting the upper and lower shafts 11 is provided at the center of the screw, and an outer support for supporting the outer 15 through which the wire 13 is inserted is provided above the guide hole. A hole 7 is provided. Then, the upper and lower shafts 11 provided through the wire holes 14 are inserted into the guide holes, the elastic body 12 is fitted below the upper and lower shafts, and the upper end of the elastic body comes into contact with the lower surface of the screw 3. I'm letting you.
In that state, in the L-shaped brake piece 9 provided with the shaft hole 9a, the attached lock portion 9b is brought into contact with the wheel 5, and the attached slide portions 9c and 9d are the inner walls 4a of the pair of left and right wheel mounting frames 4. The upper and lower shafts are inserted into the shaft holes 9a of the brake piece so as to sandwich the elastic body with a slight gap between 4b and 4b.
The wire 13 is inserted into the wire hole 14 from above via the outer 15, and the end of the wire is fixed to the suspension plate 10 with solder. As a result, the brake piece can be moved up and down and rotated in synchronization with the wheel mounting frame.
The above-mentioned fixing to the hanging plate 10 is not limited to soldering, and may be a method such as caulking or bonding.

この状態で、操作レバー等を介してワイヤー13を上方に引くと、弾性体12を縮めながら、ブレーキ片9はスライド部9c、9dと車輪取付け枠4の内壁4a、4bとにより回動を規制しながら上昇し、図4に示すようにブレーキ片9のロック部9bが車輪5から離隔してブレーキはフリー状態となる。また、この状態からワイヤー13を緩めると前述同様に左右一対の車輪取付け枠4の内壁4a、4bに沿って前記ブレーキ片を弾性体12の付勢力により、車輪5の方向に押し下げて前記車輪に前記ロック部が圧接し、図1に示すようにブレーキはロック状態となる。このとき、ブレーキ片9は左右一対の車輪取付け枠4の前記内壁に沿って昇降することに加え、前記ブレーキ片とワイヤー13とは吊り板10を介して回動可能に固定してあることで、前記ワイヤーを捻ることなく、前記車輪と前記ブレーキ片とは相対位置が常に一定となるよう構成されており、車輪5の旋回に影響を受けることなく安定したブレーキ機構の操作が可能である。
尚、本実施例はネジと固定基台が分離してある自在キャスターとしてあるが、固定基台と一体にしても、ネジを軸にしても構わない。また、スライド部の形状や車輪取付け枠の内壁の位置についても、ブレーキ片の昇降動作と回動規制に影響しない範囲であれば変更しても構わない。
In this state, when the wire 13 is pulled upward via the operation lever or the like, the brake piece 9 is restricted from rotating by the slide portions 9c and 9d and the inner walls 4a and 4b of the wheel mounting frame 4 while contracting the elastic body 12. As shown in FIG. 4, the lock portion 9b of the brake piece 9 is separated from the wheel 5, and the brake is in a free state. Further, when the wire 13 is loosened from this state, the brake piece is pushed down toward the wheel 5 by the urging force of the elastic body 12 along the inner walls 4a and 4b of the pair of left and right wheel mounting frames 4 as described above to the wheel. The lock portion is in pressure contact with each other, and the brake is locked as shown in FIG. At this time, the brake piece 9 moves up and down along the inner wall of the pair of left and right wheel mounting frames 4, and the brake piece and the wire 13 are rotatably fixed via the suspension plate 10. The relative position between the wheel and the brake piece is always constant without twisting the wire, and stable operation of the brake mechanism is possible without being affected by the turning of the wheel 5.
In this embodiment, the screw and the fixing base are separated from each other as a universal caster, but it may be integrated with the fixing base or the screw may be used as a shaft. Further, the shape of the slide portion and the position of the inner wall of the wheel mounting frame may be changed as long as they do not affect the raising / lowering operation of the brake piece and the rotation regulation.

1 回転基台
2 固定基台
3 ネジ
4 車輪取付け枠
4a、4b 内壁
5 車輪
6 回転軸
7 アウター支持穴
8 ガイド穴
9 ブレーキ片
9a 軸穴
9b ロック部
9c、9d スライド部
10 吊り板
11 上下軸
12 弾性体
13 ワイヤー
14 ワイヤー穴
15 アウター
1 Rotating base 2 Fixed base 3 Screw 4 Wheel mounting frame 4a, 4b Inner wall 5 Wheel 6 Rotating shaft 7 Outer support hole 8 Guide hole 9 Brake piece 9a Shaft hole 9b Lock part 9c, 9d Slide part 10 Suspension plate 11 Vertical shaft 12 Elastic body 13 Wire 14 Wire hole 15 Outer

Claims (1)

カートやラックに固定するネジを有し、前記ネジを中心に車輪と車輪取付け枠が回動する自在キャスターであって、
前記ネジに上下軸のガイド穴を設け、
前記ガイド穴にワイヤー穴を付設の上下軸を挿通し、
前記上下軸に弾性体を外嵌し、
ロック部とスライド部と軸穴から成るブレーキ片の前記ロック部を前記弾性体で車輪に圧接させ、前記スライド部を左右一対の車輪取付け枠の内面に摺接させた状態で前記軸穴に前記上下軸を挿着し、
前記ブレーキ片を昇降及び前記車輪取付け枠と共に回動する状態で、
前記ワイヤー穴にワイヤーを通して末端に吊り板を付けて吊持してあり、
前記ワイヤーを引くとブレーキをフリー状態にし、緩めるとロック状態にすることを特徴とする自在キャスターのブレーキ機構。
A universal caster that has screws for fixing to carts and racks, and the wheels and wheel mounting frame rotate around the screws.
The screw is provided with a guide hole for the upper and lower shafts.
Insert the upper and lower shafts with wire holes into the guide holes, and insert them.
An elastic body is fitted on the upper and lower shafts,
The lock portion of the brake piece composed of the lock portion, the slide portion, and the shaft hole is pressed against the wheel by the elastic body, and the slide portion is slidably contacted with the inner surface of the pair of left and right wheel mounting frames. Insert the upper and lower shafts,
With the brake piece raised and lowered and rotated together with the wheel mounting frame,
A wire is passed through the wire hole and a hanging plate is attached to the end to suspend it.
A universal caster brake mechanism characterized in that the brake is released when the wire is pulled and locked when the wire is loosened.
JP2018017669A 2018-01-17 2018-01-17 Swivel caster brake mechanism Active JP7096466B2 (en)

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JP7096466B2 true JP7096466B2 (en) 2022-07-06

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CN112359726B (en) * 2020-11-30 2022-07-19 中铁建大桥工程局集团第五工程有限公司 Municipal bridge building support frame

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008179312A (en) 2007-01-26 2008-08-07 Masayasu Naga Caster and chair using the same
JP2015231806A (en) 2014-06-10 2015-12-24 株式会社日乃本錠前 Caster with stopper
JP2018034538A (en) 2016-08-29 2018-03-08 株式会社日乃本錠前 caster

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008179312A (en) 2007-01-26 2008-08-07 Masayasu Naga Caster and chair using the same
JP2015231806A (en) 2014-06-10 2015-12-24 株式会社日乃本錠前 Caster with stopper
JP2018034538A (en) 2016-08-29 2018-03-08 株式会社日乃本錠前 caster

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