JPH0229251A - Foot rest mechanism - Google Patents

Foot rest mechanism

Info

Publication number
JPH0229251A
JPH0229251A JP63178141A JP17814188A JPH0229251A JP H0229251 A JPH0229251 A JP H0229251A JP 63178141 A JP63178141 A JP 63178141A JP 17814188 A JP17814188 A JP 17814188A JP H0229251 A JPH0229251 A JP H0229251A
Authority
JP
Japan
Prior art keywords
link
foot rest
footrest
downward
lowered
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP63178141A
Other languages
Japanese (ja)
Other versions
JPH0351420B2 (en
Inventor
Koji Yamada
康二 山田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
National Institute of Advanced Industrial Science and Technology AIST
Original Assignee
Agency of Industrial Science and Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Agency of Industrial Science and Technology filed Critical Agency of Industrial Science and Technology
Priority to JP63178141A priority Critical patent/JPH0229251A/en
Publication of JPH0229251A publication Critical patent/JPH0229251A/en
Publication of JPH0351420B2 publication Critical patent/JPH0351420B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE:To prevent the interference of the end portion of a foot rest with a floor surface by foldingly rotating each link while drawing in a fifth link at the time of rotating an upper link downward centering around the linking point thereof to a fixed pillar and making the foot rest shorter accompanying the downward rotation. CONSTITUTION:A foot rest 24 is fixed to a fifth link 21 and becomes horizontal at the time of being lifted up. When the foot rest is rotated downward, an upper link 12 and a lower link 13 are rotated downward centering around linking shafts to a fixed pillar while simultaneously rotating a third link 16 and a fourth link 19. As the lower link is rotated downward, the third link linked thereto is lowered while being erected centering around the linking shaft to the lower link and retracted. As the lower link 13 thus erected while being lowered, the fourth link 19 is also lowered while being erected centering around the linking shaft to the upper link 12 and retracted. At this time, the lowering quantity at the time of lowering is relatively small, without causing the foot rest 24 to interfere with a floor surface when the foot rest 24 is lowered.

Description

【発明の詳細な説明】 〈産業上の利用分野〉 この発明は歯科用の椅子、理髪店、美容院の椅子、手術
台、リクライニング礪能付きの車椅子等のフットレスト
機構に関するものである。
DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a footrest mechanism for a dental chair, a barber shop, a beauty salon chair, an operating table, a wheelchair with a reclining function, and the like.

〈従来の技術〉 従来の各種リクライニング義能付き椅子のフットレスト
のリクライニングに伴う回転動作は、第4図に示すよう
に単に一つの軸を中心に回転させる機構が用いられてい
る。
<Prior Art> As shown in FIG. 4, a mechanism for simply rotating the footrest around a single axis is used for the rotational movement accompanying the reclining of the footrest of various conventional reclining chairs.

即ち、第4図において、1は座板、2はその後端に軸3
を中心として回動自在となるように連結された背受け、
5はフットレストで該座板1の前端に軸4を中心に回動
自在となるように連結されている。
That is, in Fig. 4, 1 is a seat plate, 2 is a shaft 3 at the rear end.
The backrest is connected so that it can rotate freely around the
A footrest 5 is connected to the front end of the seat plate 1 so as to be rotatable about a shaft 4.

そして、該背受け2をv4線のように起すと、これに連
動してフットレスト5が鎖線のように下方に回動する。
When the back support 2 is raised as shown by the line V4, the footrest 5 is rotated downward as shown by the chain line.

〈発明が解決しようとする課題〉 上記のような装置では、フットレスト5は、一つの軸4
を中心にして回転動作を行うのでリクライニング動作に
伴い実線から鎖線のようフットレスト5と足のかかと6
の間にずれ7が生じる。このずれ7の為に、例えば、仰
臥姿勢のときに人体8のかかとを保持できる長さにフッ
トレスト5を設定した場合、椅子姿勢に変形すると、フ
ットレスト5の先端部が床面と干渉する事態が生ずると
いう問題があった。
<Problems to be Solved by the Invention> In the device as described above, the footrest 5 is
Since the rotation movement is performed centering on
A shift 7 occurs between the two. Because of this deviation 7, for example, if the footrest 5 is set to a length that can hold the heel of the human body 8 in the supine position, the tip of the footrest 5 may interfere with the floor surface when transformed into a chair position. There was a problem that occurred.

この発明は上記のような問題点に鑑みて下方に回転する
に伴って短くなるフットレストを提供でることを課題と
する。
In view of the above problems, it is an object of the present invention to provide a footrest that becomes shorter as it rotates downward.

く課題を解決するための手段〉 この発明は上記のようなff1題を解決するためになさ
れたもので、固定柱に対して上リンクと下リンクを上下
に回動自在に連結し、該下リンクの自由端に第3のリン
クの後端を回動自在に連結し、該第3のリンクの中央近
傍の点と前記上リンクの中央近傍の点を互いに回動自在
に連結し、前記上リンクの自由端には第4リンクを回動
自在に連結し、前記第3リンクの自由端と、前記第4リ
ンクの自由端を第5リンクの前後に回動自在に連結して
、前記上リンクを固定柱への連結点を中心に下方に回転
したとき、各リンクが折り畳まれて第5リンクを引き込
みながら回転するようにしたものである。
Means for Solving the Problems> This invention was made to solve the above-mentioned FF1 problem, and it connects an upper link and a lower link to a fixed column so as to be vertically rotatable, and A rear end of a third link is rotatably connected to the free end of the link, a point near the center of the third link and a point near the center of the upper link are rotatably connected to each other, and the upper link A fourth link is rotatably connected to the free end of the link, and the free end of the third link and the free end of the fourth link are rotatably connected to the front and rear of the fifth link. When the links are rotated downward around the connection point to the fixed column, each link is folded and rotated while drawing in the fifth link.

く作用〉 この光明は上記の4fl造であるから、第5リンクにフ
ットレストを固定し、このフットレストを上げたとき水
平となるようにする。
Since this light is of the above-mentioned 4 fl structure, a footrest is fixed to the fifth link so that the footrest is horizontal when raised.

上記の状態からフットレストを下方に回動すると、上リ
ンク、下リンクが固定柱への連結軸を中心として下方へ
回動し、同時に第3リンクと第4リンクも回転するが、
下リンクが下方に回転すると、これに連結した第3リン
クが、下リンクとの連結軸を中心に上方に起き上がりな
がら下降し、かつ後退する。
When the footrest is rotated downward from the above state, the upper link and lower link rotate downward around the connecting shaft to the fixed column, and at the same time, the third and fourth links also rotate.
When the lower link rotates downward, the third link connected thereto rises upward about the connecting shaft with the lower link, descends, and retreats.

このように下リンクが下降しつつ上方に起き上がると、
第4リンクも上リンクとの連結軸を中心として上方に起
き上がりつつ下降し、かつ、後退する。
When the lower link descends and rises upwards like this,
The fourth link also rises upward and descends around the connecting shaft with the upper link, and then retreats.

従って、第3リンクと第4リンクの先端に回動自在に連
結されている第5リンクも上方に起き上がりつつ下降し
、かつ、後退するので、第5リンクに固定したフットレ
ストは、下方に回動しながら後退する。
Therefore, the fifth link, which is rotatably connected to the tips of the third and fourth links, also rises upward, descends, and retreats, so the footrest fixed to the fifth link rotates downward. while retreating.

この為、第5リンクに固定したフットレストが水平のと
き充分に長く延びるようにしてあっても、下降時におけ
る下降量は比較的少ないので、フットレストを下げても
、床面と干渉するようなことはない。
For this reason, even if the footrest fixed to the fifth link is extended sufficiently long when it is horizontal, the amount of descent when lowering is relatively small, so even if the footrest is lowered, it will not interfere with the floor surface. There isn't.

〈実施例〉 次に、この発明の実施例を添附図面の第1図ないし第3
図に基づいて説明する。
<Example> Next, an example of the present invention will be described with reference to FIGS. 1 to 3 of the attached drawings.
This will be explained based on the diagram.

図において、11は固定柱、12.13は該固定柱11
の上下に軸14.15で回動自在に結合した上リンクと
下リンクである。
In the figure, 11 is a fixed column, and 12.13 is the fixed column 11.
An upper link and a lower link are rotatably connected to the upper and lower sides of the shaft 14 and 15 by shafts 14 and 15.

該下リンク13の先端には第3リンク16の後端を軸1
7により回動自在に連結し、この第3リンク16の中間
部より若干後寄りと、前記上リンク12の中央より若干
前寄りの点を軸18により回動自在に連結する。該上リ
ンク12の先端部分は第3リンク1Gの外側にでている
The rear end of the third link 16 is connected to the shaft 1 at the tip of the lower link 13.
7, and a point slightly rearward from the middle of the third link 16 and a point slightly forward from the center of the upper link 12 are rotatably connected by a shaft 18. The tip portion of the upper link 12 is exposed outside the third link 1G.

この上リンク12の先端に第4リンク19の後端を軸2
0により回動自在に連結し、前記第3リンク16の先端
と、第4リンク19の先端には第5リンク21の後端と
中間部とを軸22.23により回動自在に連結でる。そ
して、該第5リンク21上にフットレスト24を固定す
る。
Attach the rear end of the fourth link 19 to the tip of the upper link 12 on the shaft 2.
The rear end and intermediate portion of the fifth link 21 are rotatably connected to the tip of the third link 16 and the tip of the fourth link 19 by a shaft 22.23. Then, the footrest 24 is fixed on the fifth link 21.

第1図はフットレスト24を水平にして、固定柱11に
固定した座板25と同一水平面にした状態であり、この
状態からフットレスト24を下方に回動すると第2図の
ように上下のリンク12.13及び第3、第4リンク1
6.19並びに第5リンク21が折り畳まれてヘッドレ
スト24を下向きにする。
FIG. 1 shows a state in which the footrest 24 is horizontal and on the same level as the seat plate 25 fixed to the fixed column 11. When the footrest 24 is rotated downward from this state, the upper and lower links 12 are connected as shown in FIG. .13 and third and fourth links 1
6.19 and the fifth link 21 are folded so that the headrest 24 faces downward.

第3図は、各部の寸法の一例を示すもので、軸15.1
7間aは157關、軸14.18間すは1951wIn
1軸18.20間Cは80間、軸17.18e間は77
II1m、軸18.22間dは172nu++、軸20
.23間fは167mm、軸22.23間gは81間、
軸14.15間りは120關である。そして、軸14.
18を結ぶ線分と軸18.20を結ぶ線分のなず角度は
4°、軸17.18を結ぶ線分と軸18.22を結ぶ線
分のなす角度は7°である。
Figure 3 shows an example of the dimensions of each part.
7 space a is 157 degrees, axis 14.18 space is 1951wIn
C between 18 and 20 axes is 80, and 77 between axes 17 and 18e.
II1m, d between axis 18 and 22 is 172nu++, axis 20
.. f between 23 is 167 mm, g between axis 22 and 23 is 81,
The distance between the axes 14 and 15 is 120 degrees. and axis 14.
The angle between the line segment connecting axis 18 and the line segment connecting axis 18.20 is 4°, and the angle between the line segment connecting axis 17.18 and the line segment connecting axis 18.22 is 7°.

く効果〉 この発明は、上記の構造により以下に述べる効果がある
Effects> The present invention has the following effects due to the above structure.

即ち、フットレストを取付けた第5リンクは第3と第4
の2本のリンクで支えられ、この2木のリンクは固定柱
に支えられた上リンクと下リンクの2本のリンクに連結
することによりフットレストを固定柱上方から水平に延
ばした状態から、下方に回したとき、各リンクが折り畳
まれてフットレストを引き込みながら回動するので、従
来の一箇所の固定支点を中心に回動するものに比較して
、最下端の地上高が高くなる。
That is, the fifth link to which the footrest is attached is connected to the third and fourth links.
The footrest is supported by two links, and these two wooden links are connected to the two links, the upper link and the lower link, which are supported by the fixed column, so that the footrest can be moved downward from the horizontally extending position from above the fixed column. When turned, each link folds up and rotates while pulling in the footrest, resulting in a higher ground clearance at the lowest end compared to conventional systems that rotate around a single fixed fulcrum.

従って、フットレストを水平に延ばしたときに充分に長
くしても、これを下方に回して着座姿勢にした場合床面
と干渉しないので、歯科用の椅子理髪店、美容院の椅子
、手術台、リクライニング礪能付きの車椅子等のフット
レストとして利用すると効果的である。
Therefore, even if the footrest is long enough when extended horizontally, it will not interfere with the floor surface when turned downward to the sitting position, so it can be used in dental chairs, barber shops, beauty salon chairs, operating tables, etc. It is effective when used as a footrest for a wheelchair with a reclining function.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図はこの発明のフットレストm構の一実施例を示す
側面図、第2図は同上の折り畳み状態の側面図、第3図
は同上の各部の寸法の一例を示す側面図、第4図は従来
のフットレスト機構の一例を示す側面図である。 11・・・固定柱         12・・・上リン
ク13・・・下リンク 14、!5.17.18.20.22.23・・・軸!
6・・・第3リンク       19・・・第4リン
ク21・・・第5リンク       24・・・フッ
トレスト25・・・座板
Fig. 1 is a side view showing an embodiment of the m-structure footrest of the present invention, Fig. 2 is a side view of the same in the folded state, Fig. 3 is a side view showing an example of the dimensions of each part of the above, and Fig. 4. FIG. 2 is a side view showing an example of a conventional footrest mechanism. 11...Fixed pillar 12...Upper link 13...Lower link 14,! 5.17.18.20.22.23... Axis!
6...Third link 19...Fourth link 21...Fifth link 24...Footrest 25...Seat plate

Claims (1)

【特許請求の範囲】[Claims] 人体をのせた状態で人の姿勢を仰臥姿勢から着座姿勢に
変更させる機能を持つ機器において、固定柱に対して上
リンクと下リンクを上下に回動自在に連結し、該下リン
クの自由端に第3リンクの後端を回動自在に連結し、該
第3リンクの中央近傍の点と前記上リンクの中央近傍の
点を互いに回動自在に連結し、前記上リンクの自由端に
は第4リンクの後端を回動自在に連結し、前記第3リン
クの自由端と、前記第4リンクの自由端を第5リンクの
前後に回動自在に連結して、前記上リンクを固定柱への
連結点を中心に下方に回転させたとき、各リンクが折り
畳まれて第5リンクを引き込みながら回転するようにし
たことを特徴とするフットレスト機構。
In a device that has the function of changing the posture of a person from a supine position to a seated position with a human body on it, an upper link and a lower link are connected to a fixed column so as to be vertically rotatable, and the free end of the lower link is A rear end of the third link is rotatably connected to the rear end of the third link, a point near the center of the third link and a point near the center of the upper link are rotatably connected to each other, and the free end of the upper link has a The rear end of the fourth link is rotatably connected, the free end of the third link and the free end of the fourth link are rotatably connected to the front and rear of the fifth link, and the upper link is fixed. A footrest mechanism characterized in that when the footrest mechanism is rotated downward about a connection point to a pillar, each link is folded and the fifth link is rotated while being pulled in.
JP63178141A 1988-07-19 1988-07-19 Foot rest mechanism Granted JPH0229251A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63178141A JPH0229251A (en) 1988-07-19 1988-07-19 Foot rest mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63178141A JPH0229251A (en) 1988-07-19 1988-07-19 Foot rest mechanism

Publications (2)

Publication Number Publication Date
JPH0229251A true JPH0229251A (en) 1990-01-31
JPH0351420B2 JPH0351420B2 (en) 1991-08-06

Family

ID=16043359

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63178141A Granted JPH0229251A (en) 1988-07-19 1988-07-19 Foot rest mechanism

Country Status (1)

Country Link
JP (1) JPH0229251A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007097887A (en) * 2005-10-05 2007-04-19 Nisshin Iryoki Kk Wheelchair

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5649138A (en) * 1979-09-28 1981-05-02 Tokyo Shibaura Electric Co Ultrasonic probe

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5649138A (en) * 1979-09-28 1981-05-02 Tokyo Shibaura Electric Co Ultrasonic probe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007097887A (en) * 2005-10-05 2007-04-19 Nisshin Iryoki Kk Wheelchair

Also Published As

Publication number Publication date
JPH0351420B2 (en) 1991-08-06

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