JP6778430B2 - Wheelchair parking brake structure - Google Patents

Wheelchair parking brake structure Download PDF

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JP6778430B2
JP6778430B2 JP2016235996A JP2016235996A JP6778430B2 JP 6778430 B2 JP6778430 B2 JP 6778430B2 JP 2016235996 A JP2016235996 A JP 2016235996A JP 2016235996 A JP2016235996 A JP 2016235996A JP 6778430 B2 JP6778430 B2 JP 6778430B2
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wheel
side guide
wheelchair
guide portion
parking brake
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JP2018089159A (en
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伸明 加藤
伸明 加藤
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三貴ホールディングス株式会社
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Description

本発明は、車いすの車輪に当接して当該車いすを停止させる車いす用駐車ブレーキ構造に関する。 The present invention relates to a wheelchair parking brake structure that abuts on a wheelchair wheel to stop the wheelchair.

近年、タイヤのパンクに伴うメンテナンスの負担を軽減すべく、主車輪にノーパンクタイヤを用いた車いすが多く出回っている。 In recent years, many wheelchairs using no-puncture tires for the main wheels have been on the market in order to reduce the maintenance burden associated with tire punctures.

また、従来から提案されている一般的な車いすに用いられる駐車ブレーキとしては、例えば特許文献1に開示されているように、ブレーキシューをタイヤに直接圧接するものがある。 Further, as a parking brake used in a general wheelchair that has been conventionally proposed, for example, as disclosed in Patent Document 1, there is a parking brake in which a brake shoe is directly pressed against a tire.

したがって、ノーパンクタイヤの車いすに上記のような駐車ブレーキを適用した構成もすでに知られている。 Therefore, a configuration in which the above parking brake is applied to a wheelchair with no puncture tires is already known.

特開2013−226191号公報Japanese Unexamined Patent Publication No. 2013-226191

しかしながら、ノーパンクタイヤは従来のタイヤに比べて硬く、タイヤの回動を抑制できる程度にブレーキシューを圧接するためには駐車ブレーキにおける操作レバーを大きな力で操作する必要があり、使用者及び介護者にかかる負荷が大きいという問題があった。 However, no-puncture tires are harder than conventional tires, and it is necessary to operate the operating lever in the parking brake with a large force in order to press the brake shoes to the extent that the rotation of the tire can be suppressed, and the user and the caregiver There was a problem that the load applied to the tire was large.

そこで本発明は、軽い操作力で車輪に対して駐車ブレーキをかけることのできる車いす用駐車ブレーキ構造を提供することを目的とする。 Therefore, an object of the present invention is to provide a parking brake structure for a wheelchair that can apply a parking brake to a wheel with a light operating force.

本発明は、車いすの車輪に当接して当該車いすを停止させる車いす用駐車ブレーキ構造であって、車いす本体に軸支された、前記車輪の車軸と平行な回動軸を中心に回動するサイドガイド部と、前記サイドガイド部と連続しており、前記サイドガイド部と一体的に回動可能なタイヤ押さえ部と、を具備し、前記サイドガイド部は、前記車輪の側部に接触しており、前記タイヤ押さえ部は、前記車輪の接地面部に対向して配置されており、かつ前記タイヤ押さえ部における前記車輪の接地面部に対向する対向面部には、前記車輪の回転方向において前記サイドガイド部の前記回動軸を挟んで一側と他側とに配された一対の突部が設けられており、前記車輪の正転初動時又は逆転初動時に、前記車輪の回動に伴って前記サイドガイド部と前記タイヤ押さえ部とが回動することで前記タイヤ押さえ部の一対の突部のうちいずれかが前記車輪の接地面部に圧着して前記車輪を停止させてなることを特徴とする車いす用駐車ブレーキ構造である。 The present invention is a parking brake structure for a wheelchair that comes into contact with a wheel of a wheelchair and stops the wheelchair, and a side that is pivotally supported by the wheelchair body and rotates about a rotation axis parallel to the axle of the wheel. A guide portion and a tire holding portion that is continuous with the side guide portion and can rotate integrally with the side guide portion are provided, and the side guide portion comes into contact with the side portion of the wheel. The tire holding portion is arranged so as to face the ground contact surface portion of the wheel, and the side guide in the rotation direction of the wheel is provided on the facing surface portion of the tire holding portion facing the ground contact surface portion of the wheel. A pair of protrusions arranged on one side and the other side of the rotation shaft of the portion are provided, and the wheel is rotated at the time of the initial forward rotation or the initial rotation of the wheel. By rotating the side guide portion and the tire holding portion, one of the pair of protrusions of the tire holding portion is crimped to the ground contact surface portion of the wheel to stop the wheel. It has a parking brake structure for wheelchairs.

かかる構成にあって、前記車輪の側部に前記サイドガイド部が接触した状態で当該車輪が正転又は逆転しようとすると、前記サイドガイド部が、前記車輪が回転すると共に回動する。この際、前記サイドガイド部と一体的に回動するタイヤ押さえ部に設けられた一対の突部のうちいずれかが当該車輪の接地面部に圧着して食い込むことにより、当該車輪の回転が阻止される。ここで、前記サイドガイド部及び前記車輪は、前記サイドガイド部が前記車輪の回転に追従できる程度に互いに当接していればよく、車輪の側部にサイドガイド部が食い込む程強い力で互いに当接している必要はない。このため、駐車ブレーキをかける際に必要な力を従来構成に比して格段に低減することができる。 In such a configuration, when the wheel attempts to rotate forward or reverse while the side guide portion is in contact with the side portion of the wheel, the side guide portion rotates as the wheel rotates. At this time, one of the pair of protrusions provided on the tire holding portion that rotates integrally with the side guide portion presses against the ground contact surface portion of the wheel and bites into the tire, thereby preventing the wheel from rotating. Wheel. Here, the side guide portion and the wheel need only be in contact with each other to the extent that the side guide portion can follow the rotation of the wheel, and the side guide portion hits each other with a strong force so that the side guide portion bites into the side portion of the wheel. You don't have to be in contact. Therefore, the force required for applying the parking brake can be significantly reduced as compared with the conventional configuration.

また、前記サイドガイド部及び前記タイヤ押さえ部を、前記車輪に対して当該車輪の車軸の方向に沿って位置変更可能とする位置変更手段を備えている構成が提案される。 Further, it is proposed that the side guide portion and the tire pressing portion are provided with a position changing means capable of changing the position of the side guide portion and the tire holding portion with respect to the wheel along the direction of the axle of the wheel.

かかる構成とすることにより、前記車輪と前記サイドガイド部との相対距離を微調整することができるため、前記車輪と前記サイドガイド部との接触状態を適正化することができる。 With such a configuration, the relative distance between the wheel and the side guide portion can be finely adjusted, so that the contact state between the wheel and the side guide portion can be optimized.

本発明にかかる車いす用駐車ブレーキ構造は、軽い操作力で車輪に対して駐車ブレーキをかけることができる優れた効果がある。 The parking brake structure for a wheelchair according to the present invention has an excellent effect that the parking brake can be applied to the wheels with a light operating force.

実施例1にかかる車いす用駐車ブレーキ構造の一部切欠側面図である。It is a partially cutaway side view of the parking brake structure for a wheelchair according to the first embodiment. 実施例1にかかるブレーキ部材を示し、(a)は平面図、(b)は側面図、(c)は背面図である。The brake member according to the first embodiment is shown, (a) is a plan view, (b) is a side view, and (c) is a rear view. 実施例1にかかる駐車状態としたときの車いす用駐車ブレーキ構造を示す一部切欠側面図である。It is a partially cutaway side view which shows the parking brake structure for a wheelchair in the parking state which concerns on Example 1. FIG. 実施例1にかかる正転初動時の車いす用駐車ブレーキ構造を示す一部切欠側面図である。FIG. 5 is a partially cutaway side view showing a parking brake structure for a wheelchair at the time of initial forward rotation according to the first embodiment. 実施例1にかかる逆転初動時の車いす用駐車ブレーキ構造を示す一部切欠側面図である。FIG. 5 is a partially cutaway side view showing a parking brake structure for a wheelchair at the time of initial reverse movement according to the first embodiment. 変形例にかかるブレーキ部材の背面図である。It is a rear view of the brake member which concerns on a modification.

以下、本発明にかかる車いす用駐車ブレーキ構造(以下、駐車ブレーキ構造と適宜いう。)を具体化した実施例を詳細に説明する。なお、本発明は、下記に示す実施例に限定されることはなく、適宜設計変更が可能である。例えば、実施例の車いすの主車輪はノーパンクタイヤが使用されるものとして説明するが、これに限定されることはない。 Hereinafter, an embodiment embodying the parking brake structure for a wheelchair (hereinafter, appropriately referred to as a parking brake structure) according to the present invention will be described in detail. The present invention is not limited to the examples shown below, and the design can be changed as appropriate. For example, the main wheels of the wheelchair of the embodiment will be described as assuming that no puncture tires are used, but the present invention is not limited to this.

また、本実施例においては左側の主車輪に用いられる駐車ブレーキ構造について説明する。右側の主車輪に用いられる駐車ブレーキ構造は左右対称形状とすればよく、説明を省略する。 Further, in this embodiment, the parking brake structure used for the left main wheel will be described. The parking brake structure used for the main wheel on the right side may have a symmetrical shape, and the description thereof will be omitted.

〔実施例1〕
図1に示すように、車いす本体を構成するフレーム10には矩形板状のプレート11が固着されている。そしてさらに、プレート11における主車輪30側に向く表面には、駐車ブレーキ構造20が配設されている。
[Example 1]
As shown in FIG. 1, a rectangular plate-shaped plate 11 is fixed to the frame 10 constituting the wheelchair body. Further, a parking brake structure 20 is arranged on the surface of the plate 11 facing the main wheel 30 side.

駐車ブレーキ構造20は、プレート11に固着された板状のベース部材21を備えている。また、ベース部材21には、使用者や介護者が操作する棒状の操作レバー22が軸支されている。さらに、操作レバー22の基端部220には、カム部材23が取り付けられている。 The parking brake structure 20 includes a plate-shaped base member 21 fixed to the plate 11. Further, the base member 21 is pivotally supported by a rod-shaped operating lever 22 operated by a user or a caregiver. Further, a cam member 23 is attached to the base end portion 220 of the operating lever 22.

また、ベース部材21には、基端部240が軸支されたほぼ「く」の字形状の支持部材24が配設されている。この支持部材24のほぼ中央には、円板形状のカム受け部材24aが配設されており、このカム受け部材24aと上述のカム部材23とが当接している。また、支持部材24の先端部には、主車輪30に当接自在なブレーキ部材40が接続されている。なお、本実施例における主車輪30は、いわゆるノーパンクタイヤが使用されている。 Further, the base member 21 is provided with a support member 24 having a substantially "dogleg" shape in which the base end portion 240 is pivotally supported. A disk-shaped cam receiving member 24a is arranged substantially in the center of the support member 24, and the cam receiving member 24a and the above-mentioned cam member 23 are in contact with each other. A brake member 40 that can come into contact with the main wheel 30 is connected to the tip of the support member 24. As the main wheel 30 in this embodiment, so-called no-puncture tires are used.

かかる構成にあって、操作レバー22をベース部材21に対して前方又は後方に傾動させると、カム部材23とカム受け部材24aとが連動し、支持部材24が基端部240を中心に回動する。これにより、支持部材24の先端部に接続されているブレーキ部材40が主車輪30に対して離開又は接近し、主車輪30から離開した離脱状態と、主車輪30に当接する装着状態とに切り替えられる。かかる機構により、ブレーキ部材40を主車輪30に対して脱着可能とする脱着手段80が構成されている。 In such a configuration, when the operating lever 22 is tilted forward or backward with respect to the base member 21, the cam member 23 and the cam receiving member 24a are interlocked, and the support member 24 rotates about the base end portion 240. To do. As a result, the brake member 40 connected to the tip of the support member 24 is separated or approaches the main wheel 30, and is switched between a detached state in which the brake member 40 is separated from the main wheel 30 and a mounted state in which the brake member 40 is in contact with the main wheel 30. Be done. By such a mechanism, the attachment / detachment means 80 that allows the brake member 40 to be attached / detached to / from the main wheel 30 is configured.

次に、本発明の要部について説明する。 Next, a main part of the present invention will be described.

ブレーキ部材40は、図2に示すように、略コの字形状の板材からなるサイドガイド部50を備えている。このサイドガイド部50は、支持部材24の先端部において軸ピン25を介して軸支されている。具体的には、図1等に示すように、主車輪30の車軸と平行な軸ピン25がサイドガイド部50に差し渡されていると共に、この軸ピン25に支持部材24の先端部が貫設されている。なお、前記軸ピン25により、サイドガイド部50の回動軸が構成される。 As shown in FIG. 2, the brake member 40 includes a side guide portion 50 made of a substantially U-shaped plate material. The side guide portion 50 is pivotally supported at the tip end portion of the support member 24 via a shaft pin 25. Specifically, as shown in FIG. 1 and the like, a shaft pin 25 parallel to the axle of the main wheel 30 is delivered to the side guide portion 50, and the tip portion of the support member 24 penetrates the shaft pin 25. It is installed. The shaft pin 25 constitutes a rotation shaft of the side guide portion 50.

また、サイドガイド部50は、中央部50aから左右方向に沿って延出形成された左右一対の突出部51,51を有しており、かかる突出部51,51が、主車輪30の両側部に向かって各々突き出されている。さらに、各突出部51の先端には、円板形状の当接部52が取り付けられている。 Further, the side guide portion 50 has a pair of left and right protruding portions 51, 51 extending from the central portion 50a in the left-right direction, and the protruding portions 51, 51 form both side portions of the main wheel 30. Each is projected toward. Further, a disk-shaped contact portion 52 is attached to the tip of each protruding portion 51.

また、サイドガイド部50の中央部50aには、角筒形状のタイヤ押さえ部60が固着されている。すなわち、タイヤ押さえ部60はサイドガイド部50と連続しており、かつ軸ピン25に軸支されてサイドガイド部50と一体的に回動可能となっている。 Further, a square cylinder-shaped tire holding portion 60 is fixed to the central portion 50a of the side guide portion 50. That is, the tire holding portion 60 is continuous with the side guide portion 50, is pivotally supported by the shaft pin 25, and can rotate integrally with the side guide portion 50.

また、タイヤ押さえ部60は、主車輪30における走行時に接地する接地面部に対向して配置されている。また、タイヤ押さえ部60における主車輪30の接地面部に対向する対向面部には、一対の突部61,62が設けられている。具体的に一対の突部61,62は、前記接地面部に向かって突出していると共に、主車輪30の回転方向に沿って配置されており、さらに前記軸ピン25を挟んで上側(一側)と下側(他側)とに配置されている。そして、タイヤ押さえ部60の上辺部が上側突部61とされ、下辺部が下側突部62とされている。 Further, the tire holding portion 60 is arranged so as to face the ground contact surface portion that comes into contact with the main wheel 30 during traveling. Further, a pair of protrusions 61 and 62 are provided on the facing surface portion of the tire holding portion 60 facing the ground contact surface portion of the main wheel 30. Specifically, the pair of protrusions 61, 62 project toward the ground contact surface portion and are arranged along the rotation direction of the main wheel 30, and further, on the upper side (one side) of the shaft pin 25. And the lower side (other side). The upper side portion of the tire holding portion 60 is the upper protrusion portion 61, and the lower side portion is the lower protrusion portion 62.

次に、駐車ブレーキ構造20の作動態様を図3等に従って説明する。 Next, the operation mode of the parking brake structure 20 will be described with reference to FIG.

主車輪30に駐車ブレーキをかける場合には、図3に示すように、操作レバー22を操作してブレーキ部材40を主車輪30に装着する。そうすると、ブレーキ部材40におけるサイドガイド部50の当接部52が主車輪30の側部に押し当てられる。なお、当接部52は設けなくても問題ないが、サイドガイド部50と別部材で構成することにより、ブレーキ部材40と主車輪30との密着度合いを高めうる点、交換可能としてメンテナンス作業を容易とする点、及び互いに厚みが異なるものと交換可能として主車輪30の車輪巾に対応しうるようにした点において、優れた効果がある。 When the parking brake is applied to the main wheel 30, the operating lever 22 is operated to attach the brake member 40 to the main wheel 30 as shown in FIG. Then, the contact portion 52 of the side guide portion 50 of the brake member 40 is pressed against the side portion of the main wheel 30. It should be noted that there is no problem even if the contact portion 52 is not provided, but by forming the side guide portion 50 and a separate member, the degree of adhesion between the brake member 40 and the main wheel 30 can be increased, and maintenance work can be performed so that the brake member 40 can be replaced. It has an excellent effect in that it is easy to use and that it can be replaced with one having a different thickness so that it can correspond to the wheel width of the main wheel 30.

そして、この状態で仮に主車輪30が正転(図3中反時計回りに回転)しようとした正転初動時には、図4に示すように、サイドガイド部50が主車輪30に追従して回動して、主車輪30の正転方向にタイヤ押さえ部60が傾動する。そうすると、タイヤ押さえ部60の上側突部61が主車輪30の接地面部に圧着して食い込む。かかる状態にあっては、主車輪30の回転が阻止されて、当該車いすが確実に停止する。 Then, in this state, when the main wheel 30 tries to rotate forward (rotate counterclockwise in FIG. 3) at the initial forward rotation, as shown in FIG. 4, the side guide portion 50 rotates following the main wheel 30. As it moves, the tire holding portion 60 tilts in the forward rotation direction of the main wheel 30. Then, the upper protrusion 61 of the tire holding portion 60 presses against the ground contact surface portion of the main wheel 30 and bites into the ground surface portion. In such a state, the rotation of the main wheel 30 is blocked, and the wheelchair surely stops.

一方、ブレーキ部材40を主車輪30に装着した状態で、主車輪30が逆転(図3中時計回りに回転)しようとした逆転初動時には、図5に示すように、サイドガイド部50が主車輪30に追従して回動して、主車輪30の逆転方向にタイヤ押さえ部60が傾動する。そうすると、タイヤ押さえ部60の下側突部62が主車輪30の接地面部に圧着して食い込む。かかる状態にあっては、主車輪30の回転が阻止されて、当該車いすが確実に停止する。 On the other hand, when the main wheel 30 tries to reverse (rotate clockwise in FIG. 3) with the brake member 40 mounted on the main wheel 30, the side guide portion 50 moves to the main wheel as shown in FIG. The tire holding portion 60 tilts in the reverse direction of the main wheel 30 by rotating following the 30. Then, the lower protrusion 62 of the tire holding portion 60 presses against the ground contact surface portion of the main wheel 30 and bites into the ground contact portion. In such a state, the rotation of the main wheel 30 is blocked, and the wheelchair surely stops.

これまでに述べた構成にあっては、サイドガイド部50と主車輪30は、サイドガイド部50が主車輪30の回転に追従できる程度に互いに当接していればよく、主車輪30に対して食い込む程強い力で当接している必要はない。このため、駐車ブレーキをかける際に必要な力が、従来構成に比して格段に低減される。なお、駐車状態において、主車輪30が回転しようとする程上側突部61又は下側突部62が主車輪30に一層食い込むため、ますます車いすを停止させる力が向上して安全性が高まる。 In the configurations described so far, the side guide portion 50 and the main wheel 30 need only be in contact with each other to the extent that the side guide portion 50 can follow the rotation of the main wheel 30, with respect to the main wheel 30. It does not have to be so strong that it bites into it. Therefore, the force required to apply the parking brake is significantly reduced as compared with the conventional configuration. In the parked state, the upper protrusion 61 or the lower protrusion 62 bites into the main wheel 30 as the main wheel 30 tries to rotate, so that the force for stopping the wheelchair is further improved and the safety is improved.

また、以下のような変形例が提案される。 In addition, the following modified examples are proposed.

すなわち、ブレーキ部材40を、主車輪30の車軸に沿う方向に位置変更可能とし、サイドガイド部50と主車輪30との相対位置を変更自在とする位置変更手段90が設けられた構成が提案される。 That is, a configuration is proposed in which the position of the brake member 40 can be changed in the direction along the axle of the main wheel 30, and the position changing means 90 is provided so that the relative position between the side guide portion 50 and the main wheel 30 can be changed freely. Wheel.

具体的には、図6に示すように、タイヤ押さえ部60内において、前記支持部材24の先端部が軸ピン25に沿って左右に相対移動可能となっている。かかる構成とすることにより、タイヤ交換時や走行時において主車輪30とタイヤ押さえ部60との離間距離が変動した場合にも、主車輪30に追従してブレーキ部材40の位置を左右方向(車軸方向)に位置変更させることができる。特に、走行時において、車軸方向に移動自在なブレーキ部材40が主車輪30に対して自動的に追従する構成は、ブレーキ部材40にかかるメンテナンス等の作業負担が軽減される利点がある。 Specifically, as shown in FIG. 6, the tip end portion of the support member 24 is relatively movable to the left and right along the shaft pin 25 in the tire holding portion 60. With this configuration, even if the distance between the main wheel 30 and the tire holding portion 60 fluctuates during tire replacement or running, the position of the brake member 40 follows the main wheel 30 in the left-right direction (axle). The position can be changed to (direction). In particular, the configuration in which the brake member 40, which is movable in the axle direction, automatically follows the main wheel 30 during traveling has an advantage that the work load such as maintenance on the brake member 40 is reduced.

かかる構成とすることにより、仮に主車輪30を交換した場合などにおいて、主車輪30とサイドガイド部50との相対的な距離が微小に変更された場合にも、主車輪30とサイドガイド部50との接触状態を柔軟に適正化することができる。 With this configuration, even if the relative distance between the main wheel 30 and the side guide portion 50 is slightly changed, such as when the main wheel 30 is replaced, the main wheel 30 and the side guide portion 50 are used. The contact state with the wheel can be flexibly optimized.

上記した実施例1及び変形例以外においても、各部の寸法形状は適宜自由に設定可能である。 In addition to the above-described 1 and modified examples, the dimensions and shapes of each part can be freely set as appropriate.

また、位置変更手段90は、例えば軸ピン25の車軸方向を長手方向とする長孔がタイヤ押さえ部60に設けられており、該長孔内の適正位置で、タイヤ押さえ部60に配設されたネジをネジ止めする構成であっても構わない。 Further, the position changing means 90 is provided with, for example, a long hole in the tire holding portion 60 whose longitudinal direction is the axle direction of the shaft pin 25, and is arranged in the tire holding portion 60 at an appropriate position in the long hole. It may be configured to screw the tired screw.

10 フレーム
11 プレート
20 車いす用駐車ブレーキ構造
21 ベース部材
22 操作レバー
23 カム部材
24 支持部材
24a カム受け部材
25 軸ピン(回動軸)
30 主車輪
40 ブレーキ部材
50 サイドガイド部
50a 中央部
51 突出部
52 当接部
60 タイヤ押さえ部
61 上側突部(突部)
62 下側突部(突部)
80 脱着手段
90 位置変更手段
220 基端部
240 基端部
10 Frame 11 Plate 20 Wheelchair parking brake structure 21 Base member 22 Operating lever 23 Cam member 24 Support member 24a Cam receiving member 25 Shaft pin (rotating shaft)
30 Main wheel 40 Brake member 50 Side guide part 50a Central part 51 Protruding part 52 Contact part 60 Tire holding part 61 Upper protruding part (protruding part)
62 Lower protrusion (protrusion)
80 Detachable means 90 Position changing means 220 Base end 240 Base end

Claims (2)

車いすの車輪に当接して当該車いすを停止させる車いす用駐車ブレーキ構造であって、
前記車輪はノーパンクタイヤであり、
車いす本体に軸支された、前記車輪の車軸と平行な回動軸を中心に回動するサイドガイド部と、
前記サイドガイド部と連続しており、前記サイドガイド部と一体的に回動可能なタイヤ押さえ部と、
を具備したブレーキ部材を備え
前記サイドガイド部は、前記車輪の側部に接触しており、
前記タイヤ押さえ部は、前記車輪の接地面部に対向して配置されており、かつ前記タイヤ押さえ部における前記車輪の接地面部に対向する対向面部には、前記車輪の回転方向において前記サイドガイド部の前記回動軸を挟んで一側と他側とに配された一対の突部が設けられており、
前記車いす本体には、前方又は後方に傾動する操作レバーが軸支されており、前記操作レバーの基端部にはカム部材が取り付けられており、
また、前記車いす本体には、基端部が軸支された支持部材が配設されており、前記支持部材のほぼ中央にカム受け部材が配設されており、前記カム受け部材と前記カム部材とが当接しており、かつ、前記支持部材の先端部には、前記ブレーキ部材が接続されており、
前記操作レバーが前方又は後方に傾動すると、前記カム部材と前記カム受け部材とが連動し、前記支持部材が基端部を中心に回動して、前記支持部材の先端部に接続されている前記ブレーキ部材が前記車輪から離開した離脱状態と、前記車輪に当接する装着状態とに切り替えられ、
前記装着状態では、前記サイドガイド部が前記車輪の側部に、前記車輪の回転に追従できる程度に押し当てられて、前記車輪の正転初動時又は逆転初動時に、前記車輪の回動に伴って前記サイドガイド部と前記タイヤ押さえ部とが回動することで前記タイヤ押さえ部の一対の突部のうちいずれかが前記車輪の接地面部に圧着して前記車輪を停止させてなる
ことを特徴とする車いす用駐車ブレーキ構造。
A wheelchair parking brake structure that comes into contact with the wheels of a wheelchair and stops the wheelchair.
The wheels are no puncture tires
A side guide unit that is pivotally supported by the wheelchair body and rotates around a rotation shaft parallel to the axle of the wheel.
A tire holding portion that is continuous with the side guide portion and can rotate integrally with the side guide portion.
With a brake member equipped with
The side guide portion is in contact with the side portion of the wheel.
The tire holding portion is arranged so as to face the ground contact surface portion of the wheel, and the side guide portion of the tire holding portion faces the ground contact surface portion of the wheel in the rotation direction of the wheel. A pair of protrusions arranged on one side and the other side of the rotating shaft are provided.
An operating lever that tilts forward or backward is pivotally supported on the wheelchair body, and a cam member is attached to the base end of the operating lever.
Further, the wheelchair body is provided with a support member whose base end portion is pivotally supported, and a cam receiving member is arranged substantially in the center of the support member, and the cam receiving member and the cam member are provided. And the brake member is connected to the tip of the support member.
When the operating lever is tilted forward or backward, the cam member and the cam receiving member are interlocked, and the support member rotates about the base end portion and is connected to the tip end portion of the support member. The brake member is switched between a detached state in which the brake member is separated from the wheel and a mounted state in which the brake member is in contact with the wheel.
In the mounted state, the side guide portion is pressed against the side portion of the wheel to such an extent that it can follow the rotation of the wheel, and when the wheel is initially rotated in the forward direction or in the reverse direction, the wheel is rotated. The side guide portion and the tire pressing portion rotate so that one of the pair of protrusions of the tire pressing portion presses against the ground contact surface portion of the wheel to stop the wheel. Parking brake structure for wheelchairs.
前記サイドガイド部及び前記タイヤ押さえ部を、前記車輪に対して当該車輪の車軸の方向に沿って位置変更可能とする位置変更手段を備えている
請求項1に記載の車いす用駐車ブレーキ構造。
The parking brake structure for a wheelchair according to claim 1, further comprising a position changing means capable of changing the position of the side guide portion and the tire holding portion with respect to the wheel along the direction of the axle of the wheel.
JP2016235996A 2016-12-05 2016-12-05 Wheelchair parking brake structure Active JP6778430B2 (en)

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JP6778430B2 true JP6778430B2 (en) 2020-11-04

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