JP6258548B1 - Chair - Google Patents
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- JP6258548B1 JP6258548B1 JP2017151315A JP2017151315A JP6258548B1 JP 6258548 B1 JP6258548 B1 JP 6258548B1 JP 2017151315 A JP2017151315 A JP 2017151315A JP 2017151315 A JP2017151315 A JP 2017151315A JP 6258548 B1 JP6258548 B1 JP 6258548B1
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Abstract
【課題】脚にキャスターを備えた移動椅子であって、特に直進性、移動即応性、及び方向転換性のいずれにも優れる、行列追尾に適した椅子を提供する。【解決手段】椅子前部の左右一対の脚と、椅子後部の左右一対の脚の各々にキャスターを取り付ける。その際、3本の脚のキャスターはその車輪の向きが椅子の移動向きに固定された固定型キャスターとし、他の脚には車軸が旋回する自在型キャスターとし、かつ自在型キャスターを備える脚は、椅子の前部かつ移動向き側に据え付ける。さらに、把持棒を、前記座部の前部かつ移動向き側の隅の位置に、着座面に対し垂直に据え付ける。【選択図】図1Disclosed is a mobile chair having casters on its legs, and particularly suitable for matrix tracking, which is excellent in any of straightness, quick movement, and direction change. A caster is attached to each of the pair of left and right legs in the front part of the chair and the pair of left and right legs in the rear part of the chair. At that time, the casters of the three legs are fixed casters in which the direction of the wheels is fixed to the moving direction of the chair, the other legs are the free casters on which the axles are turned, and the legs having the free casters are Install it on the front of the chair and on the moving side. Furthermore, the gripping rod is installed perpendicularly to the seating surface at the position of the front part of the seat part and the corner on the moving direction side. [Selection] Figure 1
Description
本発明は、椅子に関する。更に詳しくは、行列に並んで順番を待つ際に、腰掛けたまま行列に追尾し移動できる椅子に関する。 The present invention relates to a chair. More specifically, the present invention relates to a chair that can be tracked and moved to a queue while sitting down when waiting for an order in line.
レストランへの入店、切符の購入、現金自動預け払い機の使用、イベント会場での入・開場待ちなど、日常のさまざまな場面において、行列に並んで順番待ちを余儀なくされることが多い。さほど待たされることなく順番が廻ってくる場合は別として、行列が長い場合や少しずつしか移動しない場合には、待つ者には大きな苦痛がともなう。このような場合に備え、使用者が腰掛けたまま行列に追尾できる椅子があれば便利である。 In various daily situations, such as entering a restaurant, purchasing tickets, using an automated teller machine, and waiting for entry / opening at an event venue, you are often forced to wait in line. Aside from the case where the turn comes around without waiting too much, if the line is long or only moves little by little, the person who waits is accompanied with great pain. In preparation for such a case, it is convenient if there is a chair that can be tracked in a queue while the user is sitting.
椅子に腰掛けたまま移動できるよう、椅子の脚へのキャスターの取り付けが慣用技術として広く採用されている。キャスターには、進行方向の固定された固定型キャスターと、車軸の旋回により任意方向に進める自在型キャスターとがある。固定型キャスターは、直進性には優れるが進行方向を変えるのが困難である。このため、キャスターの全てを自在型キャスターとした椅子(以後、「自在型キャスター付き椅子」と称する。)が、事務用椅子にて多用されている。他方、特開2000−125974号公報(以後、特許文献1)には、ショッピング、展覧会の鑑賞などにおいて、行動しながら足腰を休めることができる補助椅子として、前輪に固定式キャスターを付け、後輪に自在式キャスターを付けた椅子が公開されている(同文献、[0009]、[0046]、[請求項4])。 The use of casters on chair legs is widely used as a common technique so that the user can move while sitting on the chair. The casters include a fixed caster in which the traveling direction is fixed and a free caster that can be advanced in an arbitrary direction by turning the axle. The fixed caster is excellent in straightness, but it is difficult to change the traveling direction. For this reason, chairs in which all casters are free casters (hereinafter referred to as “chairs with free casters”) are frequently used in office chairs. On the other hand, Japanese Patent Application Laid-Open No. 2000-125974 (hereinafter referred to as Patent Document 1) discloses a rear caster with a fixed caster as an auxiliary chair that can rest legs while acting in shopping and exhibition appreciation. A chair with a free caster attached to a wheel is disclosed (the same document, [0009], [0046], [Claim 4]).
そこで、先ず「自在型キャスター付き椅子」を行列追尾用に試したところ、下記の問題点が判明した。 Therefore, when the "chair with a free caster" was first tried for tracking the matrix, the following problems were found.
第一の問題点は、「自在型キャスター付き椅子」は、任意方向に移動できるものの、反面、蛇行しやすい、つまり「直進性」を欠くという問題である。直進性を欠くことは移動地点まで多くの道のりを移動しなければならず、使用者の負担が増すこととなる。蛇行は路面に凹凸があると顕著になる。 The first problem is that the “chair with a free caster” can move in any direction, but is easy to meander, that is, lacks “straightness”. Lack of straightness must move many roads to the moving point, increasing the burden on the user. Meandering becomes noticeable when the road surface is uneven.
第二の問題点は、「自在型キャスター付き椅子」を行列追尾目的で使用すると、行列の最後尾の急な移動や方向転換に迅速に対応しにくいという点である。この理由は、「自在型キャスター付き椅子」の場合、移動開始直前の静止状態の4個の車輪の向きが不揃いになりやすいからである。結果として、全車輪を同一方向に揃えるのに余分の労力が必要となり、また所望の向きの安定した走行状態に至るまでに若干の時間を要することとなる。つまり、「移動即応性」を欠く。事務用椅子として使用の場合は、椅子の移動が机の周りの狭い範囲に限られ、かつ迅速に移動する必要がないため、このような労力や時間の発生は使用上さして問題とはならない。しかし、行列追尾を目的とする場合に移動開始にもたつくと、行列移動のペースを乱し順番待ちの人たちに迷惑を掛けることとなる。よって、移動即応性を欠くことは、看過できない問題である。 The second problem is that when a “chair with a free caster” is used for the purpose of tracking a matrix, it is difficult to quickly respond to a sudden movement or direction change at the end of the queue. This is because in the case of a “chair with a free caster”, the directions of the four wheels in a stationary state immediately before the start of movement are likely to be uneven. As a result, extra effort is required to align all the wheels in the same direction, and it takes some time to reach a stable traveling state in a desired direction. In other words, it lacks “movement responsiveness”. In the case of use as an office chair, the movement of the chair is limited to a narrow range around the desk, and it is not necessary to move quickly. Therefore, generation of such labor and time is not a problem in use. However, if the purpose of tracking is to reach the start of the movement, it will disturb the pace of the movement of the line and cause trouble for the people waiting for the turn. Therefore, lack of mobility is a problem that cannot be overlooked.
他方、特許文献1に開示の補助椅子は、「前輪の位置を動かさずに後輪側を左又は右に振ることで、補助椅子全体として容易に向きを変えることができる」とあるが(同文献[0046])、補助者が椅子を後方から押しながら後輪側を左右に振ることは容易であっても、使用者が当該補助椅子に腰掛けたまま後輪側を左右に振ることは困難である。つまり、「方向転換性」に劣る。 On the other hand, there is an auxiliary chair disclosed in Patent Document 1 that “the auxiliary chair as a whole can be easily turned by swinging the rear wheel side to the left or right without moving the position of the front wheel”. Document [0046]), even if it is easy for the assistant to swing the rear wheel side to the left and right while pushing the chair from the back, it is difficult for the user to swing the rear wheel side to the left and right while sitting on the auxiliary chair It is. That is, it is inferior to “direction changeability”.
そこで本発明者は、椅子に腰かけたまま行列に追尾するにあたって、直進性、移動即応性、さらに方向転換性のいずれにおいても優れる椅子の提供を課題として鋭意検討を進めた。 Therefore, the present inventor has eagerly studied to provide a chair that is excellent in any of straightness, movement responsiveness, and direction change when tracking a procession while sitting on a chair.
以上の課題を解決するため、本発明者が鋭意検討の結果、以下の構成になる椅子が上記課題を効率よく解決することを見出し、本発明を完成するに至った。 In order to solve the above-mentioned problems, the present inventors have intensively studied and found that a chair having the following configuration efficiently solves the above-mentioned problems, thereby completing the present invention.
なお、本発明においては、椅子に腰掛けた人が体と顔を自然な体勢にして前を見たとき、その向きを「前方」、その逆向きを「後方」、右手の向きを「右方」、左手の向きを「左方」と称する。また、着座状態にて椅子又は座部の、前方部分を「前部」、後方部分を「後部」、右側部分を「右部」、そして左側部分を「左部」と称する。また、本発明の椅子は、後記するように、着座者より見て、「前方」、「右方」、又は「左方」のいずれか一つの向きに移動する椅子であるが、その移動する向きを「移動向き」と称することとする。 In the present invention, when a person sitting on a chair looks forward with the body and face in a natural posture, the direction is “front”, the opposite direction is “rear”, and the right hand direction is “right” The direction of the left hand is referred to as “left”. In the seated state, the front part of the chair or seat is referred to as “front part”, the rear part as “rear part”, the right part as “right part”, and the left part as “left part”. In addition, as will be described later, the chair of the present invention is a chair that moves in any one direction of “front”, “right”, or “left” as viewed from the seated person, but the chair moves. The direction is referred to as “movement direction”.
本発明は、腰掛けたまま、着座者の前方、左方、又は右方のいずれか一つの向きに移動する椅子であって、該椅子は、平面視にて略正方形状の座部と、把持棒と、脚部と、を備え、
上記脚部は、上記椅子の「前部」に据え付けた左右一対の脚と、上記椅子の「後部」に据え付けた左右一対の脚と、よりなる4本の脚を備え、かつそれらの脚の接地端部は平面視にて略正方形の頂点に位置するよう据え付けられており、
上記4本の脚のうち、
イ)3本の脚は、車輪の向きが上記椅子の移動向きに固定された固定型キャスターを備え、
ロ)他の脚は、車軸が旋回する自在型キャスターを備え、
ハ)上記自在型キャスターを備える脚は、上記椅子の「前部」かつ椅子の「移動向き」側に備えられ、
上記把持棒は、上記座部の「前部」かつ「移動向き」側の隅より着座面に対し垂直に据付けられている、
ことを特徴とする椅子である。
The present invention is a chair that moves in any one of the front, left, and right directions of a seated person while sitting down, and the chair includes a substantially square seat portion in a plan view and a grip A rod and a leg,
The leg portion includes four legs including a pair of left and right legs installed on the “front part” of the chair, and a pair of left and right legs installed on the “rear part” of the chair. The grounding end is installed so as to be located at the apex of a substantially square in plan view.
Of the above four legs,
B) The three legs are equipped with fixed casters whose wheels are fixed in the direction of movement of the chair,
B) The other leg is equipped with a free caster on which the axle turns.
C) The leg provided with the above-mentioned universal caster is provided on the “front” of the chair and on the “moving direction” side of the chair,
The gripping rod is installed perpendicularly to the seating surface from the corner on the “front” and “moving direction” side of the seat,
It is a chair characterized by this.
上記において、「略正方形状」には、正方形状のほか、その角がとれた形状、辺に相当する部分が凸状に膨らんだ形状が含まれる。 In the above description, the “substantially square shape” includes not only a square shape but also a shape with corners and a shape in which a portion corresponding to a side bulges in a convex shape.
上記構成になる本発明の椅子は、4本の脚にキャスターが備わっているため、その椅子に腰掛けたまま移動出来る。ここで、上記脚に備わる4個のキャスターのうち、あらかじめ3個は椅子の「移動向き」に固定された固定型キャスターである。したがって、これら3個の固定キャスターの車輪が向いている方向に進行方向が制限されるので、蛇行や斜め移動も無く、「直進性」に優れる。 Since the chair of the present invention configured as described above has casters on four legs, it can move while sitting on the chair. Here, out of the four casters provided in the leg, three are fixed casters fixed in advance to the “movement direction” of the chair. Therefore, since the traveling direction is limited in the direction in which the wheels of these three fixed casters are facing, there is no meandering or oblique movement, and “straightness” is excellent.
そして、移動開始時には4個の車輪のうち、既に3個の車輪の向きが揃っているため、残り1個の自在キャスターの車輪の向きをこれらの車輪の向きに揃えるだけでスムースに移動が始まる。つまり、椅子の移動を開始する際に要する労力と時間は、「自在型キャスター付き椅子」の場合におけるよりも格段に軽減され、「移動即応性」に優れる。 And at the start of movement, among the four wheels, the direction of the three wheels is already aligned, so the movement starts smoothly just by aligning the direction of the remaining one free caster wheel with the direction of these wheels. . That is, the labor and time required for starting the movement of the chair are significantly reduced as compared with the case of the “chair with a free caster”, and “moving responsiveness” is excellent.
また、本発明の椅子は把持棒を備えているため、それに掴まることにより、使用者は、静止しているときは楽な姿勢を保つことができ、他方、足を蹴って移動するときにも上半身の姿勢を安定に保てる。
さらに、後記するように、使用者が把持棒を掴みながら体重移動することにより、把持棒の握り部分と脚の接地端部との間にモーメントが生じ、その体重移動と椅子の方向を変える一連の動作を容易に行える。把持棒と自在型キャスターとの連動作用により本発明の椅子は優れた「方向転換性」を備える。
In addition, since the chair of the present invention is provided with a gripping rod, the user can maintain a comfortable posture when he / she is stationary, and on the other hand, when he / she moves by kicking his / her foot Can keep the upper body posture stable.
Furthermore, as will be described later, when the user moves the weight while grasping the grasping rod, a moment is generated between the grip portion of the grasping rod and the grounded end portion of the leg, and a series of changing the weight movement and the direction of the chair. Can be operated easily. The chair of the present invention has excellent “direction changeability” due to the interlocking action of the gripping rod and the universal caster.
以上、本発明の椅子は、固定型キャスターを備える3本の脚と、自在型キャスターを備える1本の脚と、把持棒とが、「移動向き」に応じた特定の位置に設けられているため、従来の椅子に比して「直進性」、「移動即応性」及び「方向転換性」のいずれの点においても優れた椅子である。 As described above, in the chair of the present invention, the three legs including the fixed casters, the one leg including the free casters, and the gripping bar are provided at specific positions according to the “movement direction”. Therefore, the chair is excellent in any of “straightness”, “movement responsiveness”, and “direction changeability” as compared with the conventional chair.
以下、図を用いて本発明の椅子について説明する。
図1に示すように、本発明の椅子1は、平面視にて略正方形状の座部2、脚部3、及び把持棒4を備える。
座部2は脚部3により支えられる。脚部3は4本の脚5を備える。図2〜5は、椅子1における座部2、座部2に据え付けられる把持棒4、及び脚5の端部に据え付けられる固定型キャスターと自在型キャスターの配置を、平面視にて模式的に説明したものである(便宜のため、図中椅子1の「移動向き」を矢印にて表示した。脚は図示していない)。脚5は、椅子1の「前部」に左右一対、「後部」に左右一対、脚5の接地端部が平面視略正方形の頂点に位置するよう備わっている(図2,3,4,及び5)。
移動の際の安定性の上から、平面視略正方形の頂点をなす脚5の接地端部は、平面視にて、座部外周22より外側に位置しているのが好ましい。
Hereinafter, the chair of this invention is demonstrated using figures.
As shown in FIG. 1, the chair 1 of the present invention includes a seat portion 2, a leg portion 3, and a gripping rod 4 that are substantially square in plan view.
The seat 2 is supported by the legs 3. The leg portion 3 includes four legs 5. 2 to 5 schematically show the arrangement of the seat 2 in the chair 1, the gripping rod 4 installed on the seat 2, and the fixed casters and the universal casters installed on the ends of the legs 5 in plan view. (For convenience, the “movement direction” of the chair 1 is indicated by an arrow in the figure for the sake of convenience. The legs are not shown). The leg 5 has a pair of left and right at the “front” of the chair 1, a pair of left and right at the “rear”, and the grounding end of the leg 5 is positioned at the apex of a substantially square in plan view (FIGS. 2, 3, 4, and 4). And 5).
From the viewpoint of stability during movement, it is preferable that the ground contact end portion of the leg 5, which has a substantially square apex in plan view, is located outside the outer periphery 22 of the seat portion in plan view.
脚5の各々の端部にはキャスターが付いている。このうち、3本の脚は、車輪の向きが椅子1の「移動向き」に固定された固定型キャスター5a,5c,5dを備える。他の脚には、その車軸6が旋回軸7を軸として旋回する自在型キャスター5bを備える(図2〜5,図6)。この場合において、自在型キャスター5bを備える脚は、椅子1の「前方」かつ「移動向き」側の脚でなければならない。なお、図2〜5においては、固定型キャスター5a,5c,5dを移動方向に向く矩形にて示し、自在型キャスター5bを丸印の中に納まる矩形にて、模式的に示してある。 A caster is attached to each end of the leg 5. Of these, the three legs include fixed casters 5 a, 5 c, 5 d in which the directions of the wheels are fixed to the “movement direction” of the chair 1. The other leg is provided with a universal caster 5b whose axle 6 turns around the turning axis 7 (FIGS. 2 to 5 and 6). In this case, the leg provided with the universal caster 5b must be a leg on the “front” and “moving direction” side of the chair 1. 2 to 5, the fixed casters 5a, 5c, and 5d are schematically shown as rectangles facing in the moving direction, and the universal casters 5b are schematically shown as rectangles that are enclosed in circles.
したがい、対称性より、椅子1の「移動向き」が「前方」の場合(以後、「前方移動椅子」と称する。)には、自在型キャスターを備える脚5bは、椅子1の「前部」の左右のいずれの脚であっても良い(図2、3)。他方、椅子1の移動向きが「右方」の場合(以後、「右方移動椅子」と称する。)、自在型キャスターを備える脚は、椅子1の「前部」の一対の脚のうち、椅子の「右部」に位置する脚でなければならない(図4)。同様の理由で、椅子1の移動向きが「左方」の場合(以後、「左方移動椅子」と称する。)、自在型キャスターを備える脚は、椅子1の「前部」の一対の脚のうち、椅子の「左部」に位置する脚でなければならない(図5)。 Therefore, due to symmetry, when the “movement direction” of the chair 1 is “front” (hereinafter, referred to as “front movement chair”), the leg 5 b provided with the universal caster is the “front” of the chair 1. Any of the left and right legs may be used (FIGS. 2 and 3). On the other hand, when the movement direction of the chair 1 is “right” (hereinafter, referred to as “right movement chair”), the leg provided with the free caster is a pair of legs of the “front” of the chair 1. The leg must be located in the “right” part of the chair (FIG. 4). For the same reason, when the moving direction of the chair 1 is “left” (hereinafter, referred to as “left moving chair”), the leg provided with the free caster is a pair of “front” legs of the chair 1. Of these, the leg must be located on the “left part” of the chair (FIG. 5).
本発明の椅子1は、把持棒4を備える。把持棒4は、座部の「前部」かつ「移動向き」側の隅の位置に、着座面21に対し垂直に伸びている(図1〜5)。上記の座部の前部かつ移動向き側の隅の椅子下方には、自在型キャスター5bを備える脚が位置している。なお、把持棒4は、着座面より上方にのみ伸びているものであっても良いが、座部2と把持棒4の構造耐久性を勘案し、把持棒4が座部2を貫通し、自在型キャスター5bを備える脚と接合していても良い(図6)。 The chair 1 of the present invention includes a gripping bar 4. The gripping bar 4 extends perpendicularly to the seating surface 21 at the corners on the “front” and “moving direction” sides of the seat (FIGS. 1 to 5). A leg having a universal caster 5b is positioned below the chair at the front part of the seat and the corner on the moving direction side. The grip rod 4 may extend only above the seating surface, but the grip rod 4 penetrates the seat portion 2 in consideration of the structural durability of the seat portion 2 and the grip rod 4. You may join with the leg provided with the universal caster 5b (FIG. 6).
着座姿勢のままで移動する際の安定性の観点から、把持棒4の軸は、平面視にて上記自在型キャスターの車軸の旋回軸7と同一であるか、または該旋回軸よりも椅子中心に向かって内側にあることが好ましい。さらに把持棒4の軸と自在型キャスターの車軸の旋回軸7との軸中心間距離daが5cm以下であることがより好ましい(図6)。 From the viewpoint of stability when moving in the sitting posture, the axis of the gripping rod 4 is the same as the pivot axis 7 of the axle of the universal caster in a plan view, or the chair center is more than the pivot axis. It is preferable that it exists inward toward. Furthermore, it is more preferable that the center distance da between the shaft of the gripping rod 4 and the pivot shaft 7 of the axle of the universal caster is 5 cm or less (FIG. 6).
把持棒4の径と長さは、適宜調整される。着座姿勢の維持と後述する体重移動の観点から、その径は2〜5cmの範囲が好ましい。また、座部貫通の有無に関わらず、把持棒4の着座面21より上部の長さは10〜60cmの範囲が好ましい。 The diameter and length of the gripping rod 4 are adjusted as appropriate. The diameter is preferably in the range of 2 to 5 cm from the standpoint of maintaining the sitting posture and the weight shift described later. Further, the length above the seating surface 21 of the gripping rod 4 is preferably in the range of 10 to 60 cm, regardless of whether or not the seat portion is penetrated.
すでに述べたように、「前方移動椅子」においては、自在型キャスターを備える脚5bは、椅子1の「前部」の左右のいずれの脚であっても良いので、把持棒4は、自在型キャスター5bの位置に対応して据え付けられる。以後、「前方移動椅子」において、把持棒4が椅子1の「前部」かつ「右部」に据え付けられている椅子を「右把持棒・前方移動椅子」(図2)と称し、把持棒4が椅子1の「前部」かつ「左部」に据え付けられている椅子を「左把持棒・前方移動椅子」(図3)と称する。 As described above, in the “front moving chair”, the leg 5b provided with the free caster may be either the left or right leg of the “front” of the chair 1, so It is installed corresponding to the position of the caster 5b. Hereinafter, in the “forward moving chair”, a chair in which the gripping bar 4 is installed on the “front” and “right” of the chair 1 will be referred to as “right gripping bar / forward moving chair” (FIG. 2). A chair 4 is installed on the “front” and “left” of the chair 1 is referred to as a “left grip bar / forward moving chair” (FIG. 3).
座部2が90度回転対称性を有する場合には、着座位置を変えれば、「右把持棒・前方移動椅子」と「左方移動椅子」とは、相互に転用できる(図2,5)。同様に、「右把持棒・前方移動椅子」と「左方移動椅子」とは、相互に転用できる(図3,4)。 When the seat 2 has 90-degree rotational symmetry, the “right gripping bar / forward moving chair” and the “left moving chair” can be converted to each other by changing the sitting position (FIGS. 2 and 5). . Similarly, the “right gripping bar / forward moving chair” and the “leftward moving chair” can be converted to each other (FIGS. 3 and 4).
把持棒4は静止したまま着座状態を保つ間、それに掴まって楽な姿勢を保つのを補助する。また着座者が足をけって椅子とともに移動する際、それに掴まって安定した移動動作を行えるよう作用する。そして把持棒4の最も重要な機能は、椅子1の移動方向を変えるときに自在型キャスター5bと連動して、着座者が楽に椅子の移動方向を変えることができる機能を付与する点にある。移動方向を変える機能の詳細は後述する。 While the gripping bar 4 is kept stationary, the gripping bar 4 is held to assist in maintaining a comfortable posture. In addition, when the seated person moves with the chair while stepping on his / her foot, it acts by gripping it and performing a stable movement. The most important function of the gripping bar 4 is to provide a function that allows the seated person to easily change the moving direction of the chair in conjunction with the free caster 5b when changing the moving direction of the chair 1. Details of the function of changing the moving direction will be described later.
本発明の椅子1は、4本の脚5のうち、3本が固定型キャスター5a,5c,5dを備えるため、前方移動椅子、右方移動椅子、又は左方移動椅子のいずれの場合であっても、その進む方向は固定型キャスターの向いている方向に定まる。したがって、直進性に非常に優れる。
また、3個の固定型キャスター5a,5c,5dの車輪の向きが既に揃っているので、移動型キャスター5bの車輪の向きが上記固定型キャスターの車輪の向きに揃い次第直ちに椅子の移動が始まるので、移動即応性にも優れる。
Since the chair 1 of the present invention includes three fixed casters 5a, 5c, and 5d among the four legs 5, the chair 1 can be used as a forward moving chair, a right moving chair, or a left moving chair. However, the advancing direction is determined by the direction in which the fixed caster is facing. Therefore, it is excellent in straightness.
Further, since the directions of the wheels of the three fixed casters 5a, 5c, and 5d are already aligned, the movement of the chair starts as soon as the directions of the wheels of the movable caster 5b are aligned with the directions of the wheels of the fixed casters. Therefore, it is excellent in movement responsiveness.
本発明の椅子1は、以下の簡単な動作により、その方向を変えることができる。
以下、「右把持棒・前方移動椅子」の場合を例に説明する。
図7は、椅子1に着座した人が把持棒を掴まりながら体重移動し、椅子1の方向を右方向に変える場合の動作とそれに伴う各々のキャスターと椅子の動きを、平面視にて模式的に示す図である。本図においても、便宜上、固定型キャスター5a,5c,5d を移動方向(すなわち「前方」,図中では上方)に向く縦長矩形にて、自在型キャスター5bを丸印の中に納まる縦長矩形にて、模式的に示してある。
The chair 1 of the present invention can change its direction by the following simple operation.
Hereinafter, the case of the “right grip bar / forward moving chair” will be described as an example.
FIG. 7 is a plan view schematically showing the motion of a person sitting on the chair 1 while moving the weight while holding the gripping rod and changing the direction of the chair 1 to the right, and the movement of each caster and the chair. FIG. Also in this figure, for convenience, the fixed casters 5a, 5c, 5d are vertically long rectangles facing the moving direction (that is, “forward”, upward in the figure), and the free casters 5b are vertically long rectangles that fit in circles. This is schematically shown.
椅子1を右方向に方向転換させるためには、使用者は足で地面を踏んだ姿勢のまま把持棒4を握りながら「右方」に少しだけ体重移動する(図7、図中にて体重の移動方向を太矢印にて示す)。そうすると、固定型キャスター5a,5cにかかる荷重が減り、逆に自在型キャスター5b及び固定型キャスター5dが荷重の大半を支える状態になる(図中、荷重の大・小をキャスター部分の配色の濃・淡で示す)。これに伴い、固定型キャスター5a,5cの車輪と路面間の摩擦力は減じ、自在型キャスター5b及び固定型キャスター5dの車輪と路面間の摩擦力が増大する。この状態にて、固定型キャスター5dの車輪の向きは「前方」に固定されているので右方向には動きにくいのに対し、自在型キャスター5bの車輪は右方向の移動にも追随しやすい。その結果、固定型キャスター5dが支点となり、自在型キャスター5bが力点となって、椅子1は右方向に少し方向を変える(図7)。この動作を継続的に、又は断続的に数回継続すると、右旋回の度合いが増していく。 In order to change the direction of the chair 1 to the right, the user moves the weight slightly to the “right” while holding the gripping rod 4 while stepping on the ground with his / her foot (weight in FIG. 7 and FIG. 7). Is indicated by a thick arrow). Then, the load applied to the fixed casters 5a and 5c is reduced, and conversely, the free caster 5b and the fixed caster 5d are in a state of supporting most of the load (in FIG. (Indicated in light). Accordingly, the frictional force between the wheels of the fixed casters 5a and 5c and the road surface is reduced, and the frictional force between the wheels of the free casters 5b and the fixed caster 5d and the road surface is increased. In this state, the direction of the wheel of the fixed caster 5d is fixed to “front”, so that it does not move rightward. On the other hand, the wheel of the universal caster 5b easily follows the rightward movement. As a result, the fixed caster 5d serves as a fulcrum, the free caster 5b serves as a power point, and the chair 1 changes its direction slightly to the right (FIG. 7). If this operation is continued continuously or intermittently several times, the degree of right turn increases.
次に図8を用い、椅子1を左方向に方向転換させるための一連の動作と椅子の動きを説明する。
まず、使用者は足で地面を踏んだ姿勢のまま把持棒4を握り前方に少しだけ体重移動する。そうすると、固定型キャスター5c,5dにかかる荷重が減り、逆に固定型キャスター5a及び自在型キャスター5bが荷重の大半を支える状態になる。これに伴い、固定型キャスター5c,5dの車輪と路面間の摩擦力は減じ、自在型キャスター5b及び固定型キャスター5aの車輪と路面間の摩擦力が増大する。この状態にて、体重をさらに左前方に傾けると固定型キャスター5aの車輪の向きは「前方」に固定されているので左方向には動きにくいのに対し、自在型キャスター5bの車輪は左方向の移動にも追随しやすい。この結果、固定型キャスター5aが支点、自在型キャスター5bが力点となって、椅子1は左方向に少し方向を変える(図8)。この動作を継続的に、又は断続的に数回継続すると、左旋回の度合いが増していく。
Next, a series of operations for changing the direction of the chair 1 to the left and the movement of the chair will be described with reference to FIG.
First, the user grasps the gripping rod 4 while stepping on the ground with his / her foot and moves the weight slightly forward. Then, the load applied to the fixed casters 5c and 5d is reduced, and the fixed caster 5a and the universal caster 5b are in a state of supporting most of the load. Along with this, the frictional force between the wheels of the fixed casters 5c and 5d and the road surface decreases, and the frictional force between the wheels of the free casters 5b and the fixed casters 5a and the road surface increases. In this state, if the weight is further tilted to the front left, the direction of the wheels of the fixed caster 5a is fixed to “front”, so that it is difficult to move to the left. It is easy to follow the movement. As a result, the fixed caster 5a serves as a fulcrum, and the free caster 5b serves as a power point, so that the chair 1 changes its direction slightly to the left (FIG. 8). If this operation is continued continuously or intermittently several times, the degree of left turn increases.
つまり、略正方形の頂点の位置にある4つのキャスターのうち、自在型キャスターとそれと隣り合ういずれか一つの固定型キャスターにて荷重が支えられるよう把持棒を使って体重移動すると、固定型キャスターを回転中心にして自在型キャスターが円弧状の軌道を描いて移動する力が働くので、右又は左の方向に方向を変えられる。
右方移動椅子や左方移動椅子についても、上記同様の簡単な動作にて、椅子の方向を変えられる。
かくのごとく、本発明の椅子は、方向転換性にも優れる。
In other words, of the four casters located at the apex of the approximately square, if the weight is moved using the gripping rod so that the load is supported by the universal caster and any one of the fixed casters adjacent to it, the fixed caster is Since the force that moves the free caster in an arcuate path around the center of rotation acts, the direction can be changed to the right or left direction.
For the right moving chair and the left moving chair, the direction of the chair can be changed by the same simple operation as described above.
As described above, the chair of the present invention is also excellent in direction changeability.
本発明の椅子は、直進性、移動即応性、及び方向転換性に優れているので、行列追尾用の移動椅子として最適である。「前方移動椅子」は現金自動預け払い機利用者やイベント会場での入・開場待ちの人用に、「右(左)方移動椅子」はレストラン利用者(客)向けに、それぞれ個人用の椅子又は利用客向けの施設常設椅子として、利用が期待できる。本発明の椅子は高齢化社会に向けて産業上の利用価値が高い。 Since the chair of the present invention is excellent in straightness, movement responsiveness, and direction change, it is most suitable as a moving chair for matrix tracking. “Front moving chair” is for cash dispenser users and people waiting for entrance / opening at event venues, and “Right (left) moving chair” is for personal use for restaurant users (customers). It can be expected to be used as a chair or a facility permanent chair for users. The chair of the present invention has high industrial utility value for an aging society.
1 椅子
2 座部
21 着座面
22 座部外周
3 脚部
4 把持棒
5 脚
5a,5c,5d 固定型キャスター
5b 自在型キャスター
6 自在型キャスターの車軸
7 自在型キャスターの車軸の旋回軸
da 把持棒の軸と自在型キャスターの車軸の旋回軸との軸中心間距離
1 Chair 2 Seat
21 Seating surface
22 Seat part outer periphery 3 Leg part 4 Gripping rod 5 Legs 5a, 5c, 5d Fixed caster 5b Swivel caster 6 Swivel caster axle 7 Swivel caster axle pivot axis da Gripping stick axis and Swivel caster axle Distance between the center of the axis and the pivot axis
Claims (3)
前記脚部は、前記椅子の前部に据え付けた左右一対の脚と、前記椅子の後部に据え付けた左右一対の脚と、よりなる4本の脚を備え、かつそれらの脚の接地端部が平面視略正方形の頂点に位置するよう据え付けられており、前記4本の脚のうち、
イ)3本の脚は、車輪の向きが前記椅子の移動向きに固定された固定型キャスターを備え、
ロ)他の脚は、車軸が旋回する自在型キャスターを備え、
ハ)前記自在型キャスターを備える脚は、前記椅子の前部かつ椅子の移動向き側に備えられ、
前記把持棒は、前記座部の前部かつ移動向き側の隅の位置に、着座面に対し垂直に据え付けられている、
ことを特徴とする椅子。 A chair that moves in any one of the front, left, and right directions of a seated person while sitting down, and the chair includes a seat portion having a substantially square shape in plan view, a gripping rod, and a leg portion. With
The leg includes four legs including a pair of left and right legs installed on the front part of the chair and a pair of left and right legs installed on the rear part of the chair, and a grounding end of the legs It is installed to be located at the apex of a substantially square in plan view, and among the four legs,
B) The three legs are provided with a fixed caster in which the direction of the wheel is fixed to the moving direction of the chair,
B) The other leg is equipped with a free caster on which the axle turns.
C) A leg provided with the universal caster is provided on the front part of the chair and on the moving direction side of the chair,
The gripping rod is installed perpendicularly to the seating surface at the corner of the front portion and the moving direction side of the seat portion,
A chair characterized by that.
The chair according to claim 1 or 2, wherein a lower end portion of the gripping rod is joined to a leg including the universal caster .
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Citations (2)
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JP2000125974A (en) * | 1998-10-21 | 2000-05-09 | Yoshihiro Kanie | Auxiliary chair |
JP2003204998A (en) * | 2002-01-16 | 2003-07-22 | Honda Seiki Kk | Steering device for wheelchair |
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JP2000125974A (en) * | 1998-10-21 | 2000-05-09 | Yoshihiro Kanie | Auxiliary chair |
JP2003204998A (en) * | 2002-01-16 | 2003-07-22 | Honda Seiki Kk | Steering device for wheelchair |
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