JP2023127028A

JP2023127028A - folding chair

Info

Publication number: JP2023127028A
Application number: JP2022030548A
Authority: JP
Inventors: 徳隆陳; Delong Chen; 品頤陳; Pin-Yi Chen; 品翰陳; Pin-Han Chen
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-03-01
Filing date: 2022-03-01
Publication date: 2023-09-13

Abstract

To provide a folding chair allowing a user to perform a changeover operation with one hand.MEANS: A folding chair changed over between a deployed state and a stored state according to a distance between a pair of left/right support units 31, comprises a linkage mechanism 6, the linkage mechanism 6 including an actuation unit 61 disposed between the pair of left/right support units 31, a swinging link 62 pivoted on both the actuation unit 61 and one support unit 31, and an interlocking link 63 whose one end is pivoted on any one of movable sleeves 312 of the pair of left/right support units 31, and whose other end is pivoted on the actuation unit 61, the folding chair is so configured that the pair of left/right support units 31 moves toward or away from each other by interlock between the actuation unit 61 and the swinging link 62 according to vertical movement of the actuation unit 61.SELECTED DRAWING: Figure 6

Description

本発明は、折り畳み椅子に関する。 FIELD OF THE INVENTION The present invention relates to a folding chair.

図１～図４に従来の折り畳み椅子の一例が示されている。図示のように、該従来の折り畳み椅子は、背もたれ手段１１と、該背もたれ手段１１の両側にそれぞれ枢支されている支持手段１２と、該背もたれ手段１１及び２つの支持手段１２に装着されたシート手段１３と、２つの支持手段１２の間に取り付けられたサポータ手段１４と、を備えている。該背もたれ手段１１は上下に延伸する左右一本ずつの背もたれロッド１１１と、互いに枢接し、該左右一本ずつの背もたれロッド１１１の間の距離に応じて揺動する２本の後側サポータ１１２と、を有する。各支持手段１２は、いずれも互いに揺動可能に枢支し合う２本のサイドサポータ１２１を有する。サポータ手段１４は、互いに揺動可能に枢支し合う２本の前側サポータ１４１を有する。 An example of a conventional folding chair is shown in FIGS. 1 to 4. As shown, the conventional folding chair includes a backrest means 11, support means 12 respectively pivoted on both sides of the backrest means 11, and a seat attached to the backrest means 11 and the two support means 12. means 13 and support means 14 mounted between the two support means 12. The backrest means 11 includes backrest rods 111 on the left and right that extend vertically, and two rear supports 112 that pivot with each other and swing according to the distance between the backrest rods 111 on the left and right. , has. Each of the support means 12 has two side supports 121 that pivotably support each other so as to be able to swing. The supporter means 14 has two front supports 141 that pivotably support each other.

この構成により、該従来の折り畳み椅子は左右一本ずつの背もたれロッド１１１の間の距離に応じて、図１～図３に示される展開状態と、図４に示される収納状態との間に切り替えられるが、この切り替え操作は操作者が左右一本ずつの背もたれロッド１１１を両手でそれぞれ保持することを前提としており、片手で切り替え操作が可能な折り畳み椅子が望まれている。 With this configuration, the conventional folding chair can be switched between the unfolded state shown in FIGS. 1 to 3 and the stowed state shown in FIG. 4 depending on the distance between the backrest rods 111 on each side. However, this switching operation assumes that the operator holds the backrest rods 111, one on the left and one on the left, with both hands, and a folding chair that can be operated with one hand is desired.

また、図１～図４に示されるような従来の折り畳み椅子は、特許文献１にも記載されている。 Furthermore, conventional folding chairs as shown in FIGS. 1 to 4 are also described in Patent Document 1.

台湾実用新案登録第Ｍ３８０７５０号明細書Taiwan Utility Model Registration No. M380750

上記のように、本発明は片手で切り替え操作が可能な折り畳み椅子の提供を目的とする。 As mentioned above, the present invention aims to provide a folding chair that can be switched with one hand.

上記問題点に鑑みて、本発明は、
背もたれフレームと、該背もたれフレームに取り付けられる左右１つずつのサイドフレームと、前記背もたれフレームと前記左右１つずつのサイドフレームとに取り付けられるシート手段と、前記背もたれフレームに取り付けられるリンケージ機構と、を備えた折り畳み椅子であって、
前記背もたれフレームは、左右一対の支持ユニットを有し、各前記支持ユニットは、いずれも上下に延伸するメイン背もたれロッドと、該メイン背もたれロッドに取り付けられて該メイン背もたれロッドに沿って摺動可能な可動スリーブと、該メイン背もたれロッドの下端に取り付けられる第１の下端枢支ブロックと、を有しており、
前記左右１つずつのサイドフレームは、前記左右一対の支持ユニットにそれぞれ取り付けられ、且つ、いずれも、
後端が対応する前記支持ユニットが有する前記可動スリーブに枢支される第１のサイド揺動ロッドと、
後端が対応する前記支持ユニットが有する前記第１の下端枢支ブロックに枢支される第２のサイド揺動ロッドと、
第１のサイド揺動ロッドの前記後端の反対側にある前端に枢支され、対応する前記メイン背もたれロッドの下端に取り付けられる前記第１の下端枢支ブロックの前側にある第２の下端枢支ブロックと、
前記第２のサイド揺動ロッドの前記後端の反対側にある前端に枢支され、対応する前記メイン背もたれロッドに取り付けられる前記可動スリーブの前側にある前端枢支ブロックと、を有しており、
各前記サイドフレームにおいて、前記第１のサイド揺動ロッドと前記第２のサイド揺動ロッドはそれぞれの中間部分において互いに枢接しており、
前記リンケージ機構は、前記左右一対の支持ユニットがそれぞれ有する前記メイン背もたれロッドの間に配置される作動ユニットと、前記作動ユニットと１つの前記メイン背もたれロッドとの両方に枢支される揺動リンクと、一端が前記左右一対の支持ユニットのいずれか１つの前記可動スリーブに枢支され、他端が前記作動ユニットもしくは前記揺動リンクに枢支される連動リンクと、を有し、前記作動ユニットの上下移動に応じて、前記作動ユニットと前記揺動リンクとの連動により、前記左右一対の支持ユニットが互いに接近、もしくは離れるように動いて折り畳み状態の切り替えができるように構成された折り畳み椅子を提供する。 In view of the above problems, the present invention
A backrest frame, one left and right side frame attached to the backrest frame, a seat means attached to the backrest frame and the left and right side frames, and a linkage mechanism attached to the backrest frame. A folding chair equipped with
The backrest frame has a pair of left and right support units, each of which includes a main backrest rod that extends vertically, and a main backrest rod that is attached to the main backrest rod and is slidable along the main backrest rod. a movable sleeve and a first lower end pivot block attached to the lower end of the main backrest rod;
The left and right side frames are respectively attached to the pair of left and right support units, and each of the side frames includes:
a first side swinging rod whose rear end is pivotally supported by the movable sleeve of the corresponding support unit;
a second side swing rod whose rear end is pivotally supported by the first lower end pivot block of the corresponding support unit;
a second lower end pivot on the front side of said first lower end pivot block pivoted to a front end opposite said rear end of a first side swing rod and attached to a lower end of said corresponding main backrest rod; A support block,
a front end pivot block on the front side of the movable sleeve that is pivoted to a front end opposite the rear end of the second side swing rod and attached to the corresponding main backrest rod; ,
In each of the side frames, the first side swing rod and the second side swing rod are pivotally connected to each other at their intermediate portions,
The linkage mechanism includes an actuation unit disposed between the main backrest rods of the pair of left and right support units, and a swing link pivotally supported by both the actuation unit and the one main backrest rod. an interlocking link, one end of which is pivotally supported by the movable sleeve of any one of the pair of left and right support units, and the other end of which is pivotally supported by the actuation unit or the swing link; Provided is a folding chair configured such that, in response to vertical movement, the pair of left and right support units move toward or away from each other by interlocking the actuating unit and the swinging link, thereby switching the folding state. do.

上記構成により、本発明に係る折り畳み椅子は、片手で作動ユニットを保持して上下に動かすことにより、左右一対の支持ユニットがそれぞれ有するメイン背もたれロッドの間の距離が変えられるので、片手で切り替え操作が可能な折り畳み椅子を提供することができる。 With the above configuration, in the folding chair according to the present invention, by holding the operating unit with one hand and moving it up and down, the distance between the main backrest rods of the pair of left and right support units can be changed, so switching can be performed with one hand. Folding chairs can be provided.

従来の折り畳み椅子の構成例の展開状態が示される斜視図である。FIG. 2 is a perspective view showing an example of the configuration of a conventional folding chair in an unfolded state. 従来の折り畳み椅子の構成例の展開状態が示される斜視図である。FIG. 2 is a perspective view showing an example of the configuration of a conventional folding chair in an unfolded state. 従来の折り畳み椅子の構成例の展開状態が示される背面図である。FIG. 2 is a rear view showing an example of the configuration of a conventional folding chair in an unfolded state. 従来の折り畳み椅子の構成例の収納状態が示される背面図である。FIG. 2 is a rear view showing an example of the configuration of a conventional folding chair in a stored state. 本発明に係る折り畳み椅子の第１の構成例の展開状態が示される斜視図である。1 is a perspective view showing a first configuration example of a folding chair according to the present invention in an expanded state; FIG. 本発明に係る折り畳み椅子の第１の構成例の展開状態が示される斜視図である。1 is a perspective view showing a first configuration example of a folding chair according to the present invention in an expanded state; FIG. 本発明に係る折り畳み椅子の第１の構成例の展開状態が示される側面図である。1 is a side view showing a first configuration example of a folding chair according to the present invention in an unfolded state; FIG. 本発明に係る折り畳み椅子の第１の構成例の展開状態が示される背面図である。FIG. 2 is a rear view showing the unfolded state of the first configuration example of the folding chair according to the present invention. 本発明に係る折り畳み椅子の第１の構成例の収納状態が示される側面図である。FIG. 2 is a side view showing the first configuration example of the folding chair according to the present invention in a stored state. 本発明に係る折り畳み椅子の第１の構成例の収納状態が示される背面図である。FIG. 2 is a rear view showing a stored state of the first configuration example of the folding chair according to the present invention. 本発明に係る折り畳み椅子の第２の構成例の展開状態が示される背面図である。FIG. 7 is a rear view showing a second configuration example of the folding chair according to the present invention in an expanded state. 本発明に係る折り畳み椅子の第２の構成例の収納状態が示される背面図である。FIG. 7 is a rear view showing a second configuration example of the folding chair according to the present invention in a stored state. 本発明に係る折り畳み椅子の第３の構成例の展開状態が示される背面図である。FIG. 7 is a rear view showing a third configuration example of the folding chair according to the present invention in an unfolded state.

以下は各図面を参照して本発明に係る折り畳み椅子の各構成例についてより詳細に説明する。 Hereinafter, each structural example of the folding chair according to the present invention will be explained in more detail with reference to the drawings.

図５～図１０に本発明に係る折り畳み椅子の第１の構成例が示されている。図示のように、該折り畳み椅子は、背もたれフレーム３と、該背もたれフレーム３に取り付けられる左右１つずつのサイドフレーム４と、該背もたれフレーム３に取り付けられるリンケージ機構６と、該背もたれフレーム３と該左右１つずつのサイドフレーム４とに取り付けられるシート手段８と、を備える。なお、以下の説明で用いる左右とは、椅子の背面側から見た場合の左右である。 5 to 10 show a first configuration example of a folding chair according to the present invention. As shown in the figure, the folding chair includes a backrest frame 3, one side frame 4 on each side attached to the backrest frame 3, a linkage mechanism 6 attached to the backrest frame 3, and a linkage mechanism 6 attached to the backrest frame 3. It is provided with seat means 8 attached to one side frame 4 on each side. Note that the left and right used in the following description are the left and right when viewed from the back side of the chair.

背もたれフレーム３は、左右一対の支持ユニット３１を有し、各支持ユニット３１は、いずれも上下に延伸するメイン背もたれロッド３１１と、該メイン背もたれロッド３１１に取り付けられて該メイン背もたれロッド３１１に沿って摺動可能な可動スリーブ３１２と、該メイン背もたれロッド３１１の下端に取り付けられる第１の下端枢支ブロック３１３と、を有するように構成されている。 The backrest frame 3 has a pair of left and right support units 31, and each support unit 31 includes a main backrest rod 311 that extends vertically, and a main backrest rod 311 that is attached to the main backrest rod 311 and extends along the main backrest rod 311. It is configured to have a slidable movable sleeve 312 and a first lower end pivot block 313 attached to the lower end of the main backrest rod 311.

また、背もたれフレーム３は、下端が左側の支持ユニット３１の有する第１の下端枢支ブロック３１３に枢支され、該下端の反対側の上端が右側の支持ユニット３１の有する可動スリーブ３１２に枢支される第１の後側揺動ロッド３２１と、下端が右側の支持ユニット３１の有する第１の下端枢支ブロック３１３に枢支され、該下端の反対側の上端が左側の支持ユニット３１の有する可動スリーブ３１２に枢支される第２の後側揺動ロッド３２２と、を更に有し、第１の後側揺動ロッド３２１と第２の後側揺動ロッド３２２とはそれぞれの中間部分において互いに枢接している。 Further, the backrest frame 3 has a lower end pivoted to a first lower end pivot block 313 of the left support unit 31, and an upper end opposite to the lower end pivoted to a movable sleeve 312 of the right support unit 31. A first rear swing rod 321 whose lower end is pivoted to a first lower end pivot block 313 of the right support unit 31, and whose upper end opposite to the lower end is pivoted to a first lower end pivot block 313 of the left support unit 31. It further includes a second rear swing rod 322 that is pivotally supported by the movable sleeve 312, and the first rear swing rod 321 and the second rear swing rod 322 are arranged at respective intermediate portions. are adjacent to each other.

左右１つずつのサイドフレーム４は、左右一対の支持ユニット３１にそれぞれ取り付けられ、且つ、いずれも、後端が対応する支持ユニット３１が有する可動スリーブ３１２に枢支される第１のサイド揺動ロッド４１と、後端が対応する支持ユニット３１が有する第１の下端枢支ブロック３１３に枢支される第２のサイド揺動ロッド４２と、第１のサイド揺動ロッド４１の前記後端の反対側にある前端に枢支される第２の下端枢支ブロック４３と、第２のサイド揺動ロッド４２の後端の反対側にある前端に枢支される前端枢支ブロック４４と、を有するように構成されている。また、第１のサイド揺動ロッド４１と第２のサイド揺動ロッド４２とはそれぞれの中間部分において互いに枢接している。 The left and right side frames 4 are each attached to a pair of left and right support units 31, and each has a first side swing whose rear end is pivotally supported by a movable sleeve 312 of the corresponding support unit 31. a second side swing rod 42 whose rear end is pivotally supported by a first lower end pivot block 313 of the corresponding support unit 31; A second lower end pivot block 43 pivoted to the front end on the opposite side, and a front end pivot block 44 pivoted to the front end on the opposite side to the rear end of the second side swing rod 42. It is configured to have. Further, the first side swing rod 41 and the second side swing rod 42 are pivotally connected to each other at their intermediate portions.

リンケージ機構６は、左右一対の支持ユニット３１がそれぞれ有するメイン背もたれロッド３１１の間に配置され、略水平に延伸する棒状体に形成される作動ユニット６１と、それぞれ作動ユニット６１と各メイン背もたれロッド３１１との両方に枢支される２本の揺動リンク６２と、それぞれ一端が各支持ユニット３１の可動スリーブ３１２に枢支され、他端が作動ユニット６１に枢支される２本の連動リンク６３と、を有し、作動ユニット６１の上下移動に応じて、作動ユニット６１と揺動リンク６２との連動により、左右一対の支持ユニット３１が互いに接近、もしくは離れるように動くように構成されている。 The linkage mechanism 6 is arranged between the main backrest rods 311 of the left and right pair of support units 31, and includes an actuation unit 61 formed in a rod-shaped body extending substantially horizontally, and an actuation unit 61 and each main backrest rod 311, respectively. and two interlocking links 63 whose one end is pivoted to the movable sleeve 312 of each support unit 31 and the other end is pivoted to the actuation unit 61. The pair of left and right support units 31 are configured to move toward or away from each other in accordance with the vertical movement of the operation unit 61 by interlocking the operation unit 61 and the swing link 62. .

この第１の構成例において、リンケージ機構６が有する各揺動リンク６２は、作動ユニット６１に枢支される第１の端部６２１と、該第１の端部６２１の反対側にある第２の端部６２２と、該第１の端部６２１と第２の端部６２２との間にある中間部６２３と、を有し、第２の端部６２２で対応するメイン背もたれロッド３１１に枢支される。 In this first configuration example, each swing link 62 of the linkage mechanism 6 has a first end 621 pivoted to the actuation unit 61 and a second end 621 opposite to the first end 621. and an intermediate portion 623 between the first end 621 and the second end 622, the second end 622 being pivoted to the corresponding main backrest rod 311. be done.

可動スリーブ３１２と第１の下端枢支ブロック３１３との形状については特に制限はなく、サイドフレーム４の第１のサイド揺動ロッド４１と第２のサイド揺動ロッド４２や、第１の後側揺動ロッド３２１と第２の後側揺動ロッド３２２とを同時に枢支可能な形状であればよい。 There are no particular restrictions on the shapes of the movable sleeve 312 and the first lower end pivot block 313, and the shapes of the movable sleeve 312 and the first lower end pivot block 313 are not limited to the shapes of the first side swing rod 41 and the second side swing rod 42 of the side frame 4, or the first rear side Any shape is sufficient as long as it can pivot the swing rod 321 and the second rear swing rod 322 at the same time.

該折り畳み椅子はさらに、下端が左側のサイドフレーム４が有する第２の下端枢支ブロック４３に枢支され、該下端の反対側の上端が右側のサイドフレーム４が有する前端枢支ブロック４４に枢支される第１の前側揺動ロッド５１と、下端が右側のサイドフレーム４が有する第２の下端枢支ブロック４３に枢支され、該下端の反対側の上端が左側のサイドフレーム４が有する前端枢支ブロック４４に枢支される第２の前側揺動ロッド５２と、を更に有し、第１の前側揺動ロッド５１と第２の前側揺動ロッド５２とはそれぞれの中間部分において互いに枢接している。 The folding chair further has a lower end pivoted to a second lower end pivot block 43 of the left side frame 4, and an upper end opposite to the lower end pivoted to a front end pivot block 44 of the right side frame 4. The first front swing rod 51 is supported, and the lower end is pivotally supported by a second lower end pivot block 43 that the right side frame 4 has, and the upper end opposite to the lower end is held by the left side frame 4. It further includes a second front swing rod 52 that is pivotally supported by the front end pivot block 44, and the first front swing rod 51 and the second front swing rod 52 are mutually disposed at their intermediate portions. It is centrally connected.

左右１つずつのサイドフレーム４が有する第２の下端枢支ブロック４３と前端枢支ブロック４４との形状についても特に制限はなく、サイドフレーム４の第１のサイド揺動ロッド４１と第２のサイド揺動ロッド４２や、第１の前側揺動ロッド５１と第２の前側揺動ロッド５２とを同時に枢支可能な形状であればよい。 There is no particular restriction on the shape of the second lower end pivot block 43 and the front end pivot block 44 that each of the left and right side frames 4 have. Any shape is sufficient as long as it can pivot the side swing rod 42, the first front swing rod 51, and the second front swing rod 52 at the same time.

また、この第１の構成例において、シート手段８は、左右１つずつの前端枢支ブロック４４及び左右１つずつのメイン背もたれロッド３１１に取り付けられるシート部８１と、シート部８１から上方へ延伸して先端が左右１つずつのメイン背もたれロッド３１１それぞれの上端に取り付けられる背もたれ部８２とを有する。 In addition, in this first configuration example, the seat means 8 includes a seat portion 81 attached to the front end pivot blocks 44 on each left and right and one main backrest rod 311 on each left and right, and a seat portion 81 extending upward from the seat portion 81. It has a backrest part 82 whose tips are attached to the upper ends of each of the main backrest rods 311, one on the left and one on the left.

図７～図１０に示されるように、本発明の折り畳み椅子の第１の構成例では、図７及び図８に示される展開状態において、リンケージ機構６が有する作動ユニット６１を上方へ引き上げると、２本の揺動リンク６２の各背もたれロッド３１１にそれぞれ枢支される端部が互いに接近するように２本の揺動リンク６２が揺動し、そして２本の連動リンク６３に関しても、それぞれの各可動スリーブ３１２に枢支される端部が互いに接近するように揺動するようになるので、この揺動リンク６２と連動リンク６３との揺動により、左右一対の支持ユニット３１がそれぞれ有するメイン背もたれロッド３１１は互いに接近するように動き、よって図９及び図１０に示される収納状態に切り替えることができる。また、図９及び図１０に示される収納状態において、リンケージ機構６が有する作動ユニット６１を下方へ引き下げると、同じく揺動リンク６２と連動リンク６３との連動により、左右一対の支持ユニット３１がそれぞれ有するメイン背もたれロッド３１１は互いに離れるように動くので、図７及び図８に示される展開状態に切り替えることができる。 As shown in FIGS. 7 to 10, in the first configuration example of the folding chair of the present invention, when the operating unit 61 of the linkage mechanism 6 is pulled upward in the unfolded state shown in FIGS. 7 and 8, The two swing links 62 swing so that the ends of the two swing links 62 pivoted on the respective backrest rods 311 approach each other, and the two interlocking links 63 also swing. Since the ends pivoted on each movable sleeve 312 swing toward each other, the swing of the swing link 62 and the interlocking link 63 causes the main The backrest rods 311 can be moved closer together and thus switched to the stowed state shown in FIGS. 9 and 10. In addition, in the stored state shown in FIGS. 9 and 10, when the operating unit 61 of the linkage mechanism 6 is pulled down, the pair of left and right support units 31 are moved by the same movement of the swing link 62 and the interlock link 63. The main backrest rods 311 having the main backrest rods 311 move away from each other so that they can be switched to the deployed state shown in FIGS. 7 and 8.

従って、作動ユニット６１を片手で操作するだけで、展開状態と収納状態との間の切り替え操作が可能な折り畳み椅子を提供することができる。 Therefore, it is possible to provide a folding chair that can be switched between the unfolded state and the stored state simply by operating the actuating unit 61 with one hand.

図１１と図１２に本発明の折り畳み椅子の第２の構成例が示されている。図示のように、この第２の構成例はリンケージ機構６の構成が第１の構成例と異なるので、以下ではこの相違点について詳しく説明する。 A second configuration example of the folding chair of the present invention is shown in FIGS. 11 and 12. As shown, the second configuration example differs from the first configuration example in the configuration of the linkage mechanism 6, and this difference will be explained in detail below.

本発明の折り畳み椅子の第２の構成例におけるリンケージ機構６は、左右一対の支持ユニット３１がそれぞれ有するメイン背もたれロッド３１１の間に配置される作動ユニット６１と、それぞれ作動ユニット６１と各メイン背もたれロッド３１１との両方に枢支される２本の揺動リンク６２と、それぞれ一端が各支持ユニット３１の可動スリーブ３１２に枢支され、他端が揺動リンク６２に枢支される２本の連動リンク６３と、を有し、特に、この構成例では、各揺動リンク６２は、作動ユニット６１に枢支される第１の端部６２１と、該第１の端部６２１の反対側にある第２の端部６２２と、該第１の端部６２１と第２の端部６２２との間にある中間部６２３と、を有し、中間部６２３で対応する前記メイン背もたれロッド３１１に枢支され、各連動リンク６３は、対応する可動スリーブ３１２に枢支される一端を有する第１のリンク部６３１と、第１のリンク部６３１に枢接され、第１のリンク部６３１より短く、且つ、揺動リンク６２の第２の端部６２２に枢支される前記他端を有する第２のリンク部６３２と、を有する。 The linkage mechanism 6 in the second configuration example of the folding chair of the present invention includes an actuation unit 61 disposed between the main backrest rods 311 of the pair of left and right support units 31, and an actuation unit 61 and each main backrest rod. 311, and two interlocking links, one end of which is pivoted to the movable sleeve 312 of each support unit 31, and the other end of which is pivoted to the swing link 62. links 63; in particular, in this configuration, each swing link 62 has a first end 621 pivoted to the actuating unit 61 and an opposite end of the first end 621; a second end 622 and an intermediate section 623 between the first end 621 and the second end 622, the intermediate section 623 being pivoted to the corresponding main backrest rod 311; Each interlocking link 63 includes a first link part 631 having one end pivotally supported by the corresponding movable sleeve 312, and a first link part 631 that is pivotally connected to the first link part 631, is shorter than the first link part 631, and , a second link portion 632 having the other end pivotally supported by the second end portion 622 of the swing link 62.

この構成により、本発明の折り畳み椅子の第２の構成例では、図１１に示される展開状態において、リンケージ機構６が有する作動ユニット６１を下方へ引き下げると、２本の揺動リンク６２の各背もたれロッド３１１にそれぞれ枢支される端部が互いに接近するように２本の揺動リンク６２が揺動して左右一対の支持ユニット３１がそれぞれ有するメイン背もたれロッド３１１が互いに接近し、そして２本の連動リンク６３に関しても、２本の第１のリンク部６３１のそれぞれの各可動スリーブ３１２に枢支される端部がメイン背もたれロッド３１１の接近に応じて互いに接近すると共に、２本の第２のリンク部６３２が２本の揺動リンク６２の動きに応じて互いに接近するように揺動するので、図１１に示される展開状態から図１２に示される収納状態に切り替えることができる。また、図１２に示される収納状態において、リンケージ機構６が有する作動ユニット６１を上方へ引き上げると、同じく揺動リンク６２と連動リンク６３との連動により、左右一対の支持ユニット３１がそれぞれ有するメイン背もたれロッド３１１は互いに離れるように動くので、図１１に示される展開状態に切り替えることができる。 With this configuration, in the second configuration example of the folding chair of the present invention, when the operating unit 61 of the linkage mechanism 6 is pulled down in the unfolded state shown in FIG. The two swing links 62 swing so that the ends pivoted on the rods 311 approach each other, and the main backrest rods 311 of the left and right pair of support units 31 approach each other. Regarding the interlocking links 63, the ends of the two first link parts 631 that are pivotally supported by the respective movable sleeves 312 approach each other as the main backrest rod 311 approaches, and the two second Since the link portions 632 swing toward each other in accordance with the movement of the two swing links 62, it is possible to switch from the unfolded state shown in FIG. 11 to the stored state shown in FIG. 12. In addition, when the operating unit 61 of the linkage mechanism 6 is pulled upward in the stored state shown in FIG. 12, the main backrests of the pair of left and right support units 31 are also The rods 311 move away from each other so that they can be switched to the deployed state shown in FIG. 11.

図１３に本発明の折り畳み椅子の第３の構成例が示されている。図示のように、この第３の構成例では、第１の構成例におけるリンケージ機構６が有する連動リンク６３を片方の１本のみ有する構成も第１の構成例と同等な効果を発揮できることが示されている。 FIG. 13 shows a third configuration example of the folding chair of the present invention. As shown in the figure, the third configuration example shows that a configuration in which the linkage mechanism 6 in the first configuration example has only one interlocking link 63 on one side can also exhibit the same effect as the first configuration example. has been done.

以上、本発明の実施形態を説明したが、本発明はこれに限定されるものではなく、最も広い解釈の精神および範囲内に含まれる様々な構成として、全ての修飾および均等な構成を包含するものとする。 Although the embodiments of the present invention have been described above, the present invention is not limited thereto, and includes all modifications and equivalent configurations as various configurations included within the spirit and scope of the widest interpretation. shall be taken as a thing.

上記のように、本発明に係る折り畳み椅子は、片手で作動ユニット６１を保持して上下に動かすことにより、左右一対の支持ユニット３１がそれぞれ有するメイン背もたれロッド３１１の間の距離が変えられるので、片手で切り替え操作が可能な、従来より便利な折り畳み椅子を提供することができる。 As described above, in the folding chair according to the present invention, by holding the operating unit 61 with one hand and moving it up and down, the distance between the main backrest rods 311 of the pair of left and right support units 31 can be changed. It is possible to provide a folding chair that can be switched with one hand and is more convenient than before.

３背もたれフレーム
３１支持ユニット
３１１メイン背もたれロッド
３１２可動スリーブ
３１３第１の下端枢支ブロック
３２１第１の後側揺動ロッド
３２２第２の後側揺動ロッド
４サイドフレーム
４１第１のサイド揺動ロッド
４２第２のサイド揺動ロッド
４３第２の下端枢支ブロック
４４前端枢支ブロック
５１第１の前側揺動ロッド
５２第２の前側揺動ロッド
６リンケージ機構
６１作動ユニット
６２揺動リンク
６２１第１の端部
６２２第２の端部
６２３中間部
６３連動リンク
６３１第１のリンク部
６３２第２のリンク部
８シート手段
８１シート部
８２背もたれ部 3 Backrest frame 31 Support unit 311 Main backrest rod 312 Movable sleeve 313 First lower end pivot block 321 First rear swing rod 322 Second rear swing rod 4 Side frame 41 First side swing rod 42 Second side swing rod 43 Second lower end pivot block 44 Front end pivot block 51 First front swing rod 52 Second front swing rod 6 Linkage mechanism 61 Actuation unit 62 Swing link 621 First End portion 622 Second end portion 623 Intermediate portion 63 Interlocking link 631 First link portion 632 Second link portion 8 Seat means 81 Seat portion 82 Backrest portion

Claims

A backrest frame, one left and right side frame attached to the backrest frame, a seat means attached to the backrest frame and the left and right side frames, and a linkage mechanism attached to the backrest frame. A folding chair equipped with
The backrest frame has a pair of left and right support units, each of which includes a main backrest rod that extends vertically, and a main backrest rod that is attached to the main backrest rod and is slidable along the main backrest rod. a movable sleeve and a first lower end pivot block attached to the lower end of the main backrest rod;
The left and right side frames are respectively attached to the pair of left and right support units, and each of the side frames includes:
a first side swinging rod whose rear end is pivotally supported by the movable sleeve of the corresponding support unit;
a second side swing rod whose rear end is pivotally supported by the first lower end pivot block of the corresponding support unit;
A second lower end on the front side of the first lower end pivot block pivoted to the front end opposite the rear end of the first side swing rod and attached to the lower end of the corresponding main backrest rod. pivot block,
a front end pivot block on the front side of the movable sleeve that is pivoted to a front end opposite the rear end of the second side swing rod and attached to the corresponding main backrest rod; ,
In each of the side frames, the first side swing rod and the second side swing rod are pivotally connected to each other at their intermediate portions,
The linkage mechanism includes an actuation unit disposed between the main backrest rods of the pair of left and right support units, and a swing link pivotally supported by both the actuation unit and the one main backrest rod. an interlocking link, one end of which is pivotally supported by the movable sleeve of any one of the pair of left and right support units, and the other end of which is pivotally supported by the actuation unit or the swing link; The folding chair is configured such that the pair of left and right support units move toward or away from each other in response to vertical movement by interlocking the actuating unit and the swinging link, thereby switching the folding state.

The swing link has a first end pivotally supported by the actuation unit, a second end opposite the first end, and a first end and a second end. 2. The folding chair of claim 1, further comprising: an intermediate section between the first and second ends of the folding chair;

The folding chair according to claim 2, wherein the other end of the interlocking link is pivotally supported by the actuating unit.

The swing link has a first end pivotally supported by the actuation unit, a second end opposite the first end, and a first end and a second end. an intermediate portion between the main backrest rod and the corresponding main backrest rod;
The interlocking link includes a first link portion having the one end pivotally supported by the corresponding movable sleeve, and the interlocking link is pivotally connected to the first link portion, is shorter than the first link portion, and has the one end that is pivotally supported by the corresponding movable sleeve. 2. The folding chair according to claim 1, further comprising: a first link portion having the other end pivotally supported by the second end portion of the movable link.

a first rear whose lower end is pivoted to the first lower end pivot block of one of the support units, and whose upper end opposite to the lower end is pivoted to the movable sleeve of the other support unit 31; a side swinging rod;
a second member whose lower end is pivoted to the first lower end pivot block of the other support unit, and whose upper end opposite to the lower end is pivoted to the movable sleeve of the one support unit; A rear swing rod, wherein the first rear swing rod and the second rear swing rod are pivotally connected to each other at intermediate portions thereof. The folding chair described in 1.

A first whose lower end is pivoted to the second lower end pivot block of one of the side frames, and whose upper end opposite to the lower end is pivoted to the front end pivot block of the other side frame. a front swinging rod;
a second whose lower end is pivoted to the second lower end pivot block of the other side frame, and whose upper end opposite to the lower end is pivoted to the front end pivot block of the one side frame; 2. A front swing rod, wherein the first front swing rod and the second front swing rod are pivotally connected to each other at intermediate portions thereof. The folding chair mentioned.

The seat means includes a seat portion attached to the front end pivot blocks on each side and the main backrest rods on each side;
The folding chair according to claim 1, further comprising a backrest portion extending upward from the seat portion and having distal ends attached to upper ends of each of the left and right main backrest rods.