TW201320928A - Chair - Google Patents

Abstract

A chair comprises a seat shell 3 and a backrest 2. A cushion 11 is laid on the seat shell 8, and the backrest 2 is constructed of the cushions 11a, 12 laid on vertically separated back shells 9, 10. The seat shell 8 and the lower back shell 9 are connected integrally by side hinge parts 14 on both sides, and a slit 15 is left between the side hinge parts 114 on both sides. A bending point 14a is arranged at the front end of each side hinge part 14, and therefore the whole backrest 2 sinks and reclines simultaneously with respect to the rear end of the seat 2. The cushion 11 is coupled integrally with the lower back cushion 11a.

Description

椅子 chair

本申請案之發明係有關椅座與靠背成連續之外觀之搖椅。 The invention of the present application relates to a rocking chair that has a continuous appearance of the seat and the backrest.

在形成椅座與靠背為連續之外觀之椅子中有座殼板與背殼板一體連結而全體露出之類型，以及鋪設緩衝墊於座殼板及背殼板之類型。座殼板及背殼板露出之類型係大多構造簡單，大多不具備有搖動功能。 In the chair which forms a continuous appearance of the seat and the backrest, there is a type in which the shell plate and the back shell are integrally joined to each other, and the type of the cushion is applied to the seat shell and the back shell. The types of exposed shell plates and back shell sheets are mostly simple in construction, and most of them do not have a shaking function.

另一方面，鋪設緩衝墊於殼板之類型大多具備有搖動功能，其例子記載於專利文獻1、2中。其中，專利文獻1之椅子雖然作成藉由靠背之向後傾動，椅座亦向後傾動，由於藉由椅座之向後傾動之狀態使靠背之向後傾動之狀態變大，因此，於座殼板與背殼板之交界部設有開縫，設定成座殼板與背殼板之交界部容易變形。 On the other hand, the type in which the cushion is placed on the shell is often provided with a rocking function, and examples thereof are described in Patent Documents 1 and 2. In the chair of Patent Document 1, the seat is tilted backward by the backrest, and the seat is tilted backward by the state in which the seat is tilted backward. Therefore, the seat back and the back are enlarged. The joint portion of the shell plate is provided with a slit, and is set to be easily deformed at the boundary portion between the seat shell plate and the back shell plate.

另一方面，於專利文獻2中，設定成當靠背後傾時，椅座係側面姿勢幾乎未改變下些許前進，因此，為容許靠背之向後傾動，形成跨座殼板及背殼板的二個開縫，設定成座殼板與背殼板的交界部容易產生變形。 On the other hand, in Patent Document 2, it is set such that when the backrest is tilted backward, the side posture of the seat is almost unchanged, and therefore, the backrest is tilted backward to form the straddle shell and the back panel. The slit is set to be easily deformed at the boundary between the seat shell and the back shell.

[先行技術文獻] [Advanced technical literature] [專利文獻] [Patent Literature]

[專利文獻1]日本專利特開昭63-23620號公報 [Patent Document 1] Japanese Patent Laid-Open Publication No. SHO 63-23620

[專利文獻2]日本專利第2592108號公報 [Patent Document 2] Japanese Patent No. 2592108

於專利文獻1、2中，背殼板係雖藉由與座殼板之連結部之變形而向後傾，惟由於支持背殼板之背架之轉動支點係普通較背殼板之下端更靠近下方，因此，使背殼板之向後傾動跟從於背架之向後傾動為有一定的限度，從而，有後傾角度不可能變為很大的問題。亦即，由於背殼板之彎曲支點與轉動支點不同，因此，無法輕易地使之搖動。特別是搖動時，椅座係不會後傾而僅後退移動或被固定情況下，難以使背殼板毫無困難地地向後傾動。 In Patent Documents 1 and 2, the back shell plate is inclined backward by deformation of the joint portion with the seat shell plate, but since the pivot point of the back frame supporting the back shell plate is generally closer to the lower end of the back shell plate Below, therefore, there is a limit to tilting the back panel back and tilting backward from the back frame, so that there is a problem that the back tilt angle cannot become large. That is, since the bending fulcrum of the back shell is different from the pivot point, it cannot be easily shaken. In particular, when the rocking is performed, the seat base does not tilt backward and only moves backward or is fixed, and it is difficult to tilt the back shell back without difficulty.

本申請案之發明係有鑑於此種現狀而完成者，其目的之一在於即使是背座一體方式之椅子，仍儘可能擴大靠背之後傾角度，提高舒適性能。 The invention of the present application has been completed in view of such a situation, and one of its objects is to increase the comfort angle of the backrest as much as possible even in the chair of the back seat integrated type.

雖然樹脂製殼板係一般藉由使用成形機之射出成形法來製造，惟，由於當座殼板全體與背殼板全體連結成一體時，在藉由射出成形法來製造之中，由於投影面積非常地大，因此，不得不使用鎖模能力較大的大型成形機來製造，如此，不單僅因高價設備，而製造成本亦變高，且準備煩瑣，並成形機的使用預約塞滿，而無法如期製造的情形亦變多。 Although the resin shell plate is generally produced by an injection molding method using a molding machine, since the entire shell plate and the back shell are integrally joined together, they are manufactured by injection molding, due to projection. Since the area is extremely large, it has to be manufactured using a large-sized molding machine having a large mold clamping capability. Thus, not only is the expensive equipment, but the manufacturing cost is also high, and the preparation is cumbersome, and the use of the molding machine is filled up. There are also many cases where it is impossible to manufacture as scheduled.

更且，雖然在椅子中備齊有如像是低背、中背、高背之靠背高度不同者，惟由於在一體成形殼板全體之方式中，須就每個種類之椅子準備金屬模具，因此，亦有商品群全體之成 本變高的問題。本申請案之發明係目的之一亦在於改善有關如此之成形之問題。 Moreover, although the height of the backrest of the low back, the middle back, and the high back is different in the chair, since the metal mold is required for each type of chair in the manner of integrally forming the outer panel, , there are also all the product groups This becomes a high problem. One of the objects of the invention of the present application is also to improve the problems associated with such formation.

更且，本申請案之發明係目的之一亦在於，在連動於靠背之向後傾動而使椅座後退中，簡化此連動機構，一面使靠背之背面部簡單明瞭，一面確保靠背之較高的支持強度。此外，本申請案包含甚多有關椅子之改良構造，其目的之一亦在於提供此等經改良之構成。 Furthermore, one of the objects of the invention of the present application is to simplify the interlocking mechanism while tilting the backrest to move the seat back, thereby simplifying the interlocking mechanism and ensuring a high backrest while making the back portion of the backrest simple and clear. Support strength. Moreover, the present application contains a number of improved configurations for chairs, one of which is to provide such improved construction.

本申請案之發明係形成椅座與靠背為連續之外觀，上述靠背係安裝於背架可向後傾動地連結於上述椅座或配置於其下方之底座之基本構造。且，所謂「形成椅座與靠背為連續之外觀」包含形成椅座與靠背為一體連續之外觀的情形，以及椅座與靠背雖為個別構造卻相互貼緊之情形。 The invention of the present application forms a continuous appearance of the seat and the backrest, and the backrest is attached to the basic structure in which the back frame is tiltably coupled to the seat or the base disposed below the back frame. Further, the phrase "formation that the seat and the backrest are continuous" includes a case where the seat and the backrest are integrally formed in a continuous manner, and the seat and the backrest are closely attached to each other although they are individual structures.

而且，本申請案之發明於上述基本構成中包含涵蓋多方面的構成，第1發明係於上述基本構成中上述椅座具有上面鋪設座緩衝墊之樹脂製座殼板，另一方面，上述靠背具備前面鋪設背緩衝墊之樹脂製背殼板，上述座殼板與背殼板係利用鉸鏈手段以容許上述背殼板相對於上述座殼板之後端全體地產生下降之方式來連結。 Further, the invention of the present application includes a configuration that covers a plurality of aspects in the above-described basic configuration. In the above-described basic configuration, the seat has a resin seat plate on which a seat cushion is laid, and on the other hand, the backrest The resin backing plate is provided with a back cushion, and the seat shell and the back shell are connected by a hinge means to allow the back shell to be lowered relative to the rear end of the seat shell.

第1發明係如例示於第2~第10發明，可作各種展開。其中，於第2發明中，上述背殼板係全體成為一體構造，或分成上下複數個零件而相互連結，另一方面，上述鉸鏈手段係 以配置於上述座殼板及背殼板之左右端部之側鉸鏈部所構成，在上述左右側鉸鏈部間之部位，於上述座殼板之後端與背殼板之下端之間空出細長之開縫。 The first invention is exemplified in the second to tenth inventions, and can be variously developed. In the second aspect of the invention, the entire back shell layer is integrally formed or divided into a plurality of upper and lower parts, and the hinge means is connected to each other. The side hinge portion disposed at the left and right end portions of the seat shell plate and the back shell plate is formed at a position between the left and right side hinge portions, and is elongated between the rear end of the seat shell plate and the lower end of the back shell plate The slit.

第3發明係在第2發明中於上述座殼板之後端與背殼板之下端之間設置有左右兩端部沿前後方向為長形、且呈全體俯視向前凹入之形態之開縫，因此，上述座殼板之後端與背殼板之下端係經由位於上述開縫之左右外側之上述側鉸鏈部連結成為一體，上述側鉸鏈部之彎曲支點位於較上述座殼板之後端更靠近面前。 According to a third aspect of the invention, in the second aspect of the invention, the left and right end portions are provided with a slit formed in a front-rear direction in the front-rear direction between the rear end of the seat shell and the lower end of the back shell, and are recessed in a plan view in a front view. Therefore, the rear end of the seat shell and the lower end of the back shell are integrally joined via the side hinge portion located on the left and right outer sides of the slit, and the bending fulcrum of the side hinge portion is located closer to the rear end of the seat shell before.

第4發明係明確地指出椅座與靠背之動作關係者，在第1至第3發明中任一發明之中，上述背架向後傾動自如地連結於配置在上述椅座下方之底座，上述座殼板係以當上述背架向後傾動時被向後拉而後退移動之方式被上述底座所支持著。 According to a fourth aspect of the invention, in the first aspect of the invention, the back frame is slidably coupled to a base disposed under the seat, and the seat is The shell plate is supported by the base in such a manner that the back frame is pulled back and moved backward when tilting backward.

第5發明係在第4發明之中，適當地具體化連動機構者，於此發明中，上述底座係具有至少後端緣沿左右方向為長之形態之本體部，以及自上述本體部向後突出之背支持部，於上述本體部，腳支柱被固定，同時，上述椅座可前後移動地被支持著，另一方面，上述背架係具有位於在上述底座中之本體部之後方、沿左右方向為長的基部，將上述背架之基部向後傾動自如地連結於上述底座之背支持部，同時，上述椅座直接或經由中間支持體連結於在上述背架中之基部之左 右側部。 According to a fifth aspect of the invention, in the fourth aspect of the invention, the interlocking mechanism is appropriately embodied. In the invention, the base has a body portion in which at least the rear end edge is long in the left-right direction, and the rear portion protrudes rearward from the main body portion. The back support portion is fixed to the main body portion, and the seat is supported by the front and rear movements. On the other hand, the back frame is located behind the main body portion of the base. a base having a long direction, the base of the back frame is slidably coupled to the back support portion of the base, and the seat is coupled to the base of the base in the back frame directly or via an intermediate support Right side.

第6發明係於靠背之構造具有特徵者，在第1至第3發明中任一發明，上述背殼板係由一體連結於上述座殼板之下部背殼板與重疊配置於其上之上部背殼板所分離構成，此等上部背殼板之下端與下部背殼板之上端連結，更且，上述上部背殼板與下部背殼板分別安裝於上述背架。 According to a sixth aspect of the invention, in the first aspect of the invention, the back cover plate is integrally coupled to the lower back plate of the seat plate and overlapped on the upper portion thereof The back shell plate is separated, and the lower end of the upper back shell is connected to the upper end of the lower back shell, and the upper back shell and the lower back shell are respectively mounted on the back rack.

第7發明係適當地具體化第6發明者，在此發明中，下部背緩衝墊鋪設在上述下部背殼板之前面，與上述下部背緩衝墊分離之上部背緩衝墊鋪設於上部背殼板之前面，上述座緩衝墊與下部背緩衝墊係為一體接連，且上述座緩衝墊與下部背緩衝墊係以一體接連之表皮材所覆蓋。 According to a seventh aspect of the invention, the sixth inventor is appropriately embodied. In the invention, the lower back cushion is laid on the front surface of the lower back shell, and the lower back cushion is separated from the upper back cushion to be laid on the upper back shell. In the foregoing, the seat cushion and the lower back cushion are integrally connected, and the seat cushion and the lower back cushion are covered by an integrally connected skin material.

第8發明係適當地具體化第7發明者，於此發明中，上述座緩衝墊與下部背緩衝墊係藉由***成形安裝於上述座殼板與下部背殼板，上述座緩衝墊與下部背緩衝墊相互連結之部分係自上述座殼板與下部背殼板間之開縫延展至裏側。 According to a seventh aspect of the present invention, in the seventh invention, the seat cushion and the lower back cushion are attached to the seat shell plate and the lower back shell plate by insert molding, and the seat cushion and the lower portion are provided. The portions in which the back cushions are coupled to each other are extended from the slit between the seat shell plate and the lower back shell plate to the inner side.

第10發明係亦適當地具體化第7發明者，在此發明中，上述表皮材係由覆蓋上述座緩衝墊之座被覆部及自上方被覆上述殼板及背緩衝墊之袋狀之背被覆部所構成，兩者係一體連結，使上述座被覆部之前緣及左右側緣及背被覆部之下端緣轉入至上述座殼板之下面，於此窄幅帶狀之緣構件被固定著，並將上述緣構件卡止於座殼板之下面。 According to a tenth aspect of the present invention, in the seventh aspect of the invention, the surface material is covered by a seat covering portion covering the seat cushion and a bag-shaped back covering the shell plate and the back cushion from above. a narrow portion of the seat cover portion and the left and right side edges and the lower edge of the back cover portion are transferred to the lower surface of the seat shell plate, and the narrow strip-shaped edge member is fixed And the above-mentioned edge member is locked under the seat plate.

第11發明係第1發明或第5發明之展開例，在此發明中， 上述背架係具有位於上述靠背之左右側部之後面之左右背支柱，另一方面，於上述背殼板前面重疊配置補強板，上述補強板、背殼板與左右背支柱藉螺絲一體鎖緊連結。 The eleventh invention is an expanded example of the first invention or the fifth invention, and in the invention, The back frame has left and right back pillars located behind the left and right side portions of the backrest, and on the other hand, a reinforcing plate is disposed on the front surface of the back shell plate, and the reinforcing plate, the back shell plate and the left and right back pillars are integrally locked by screws. link.

於本申請案之發明中，由於背殼板係其全體相對於座殼板的後端全體地下降移動(亦即，為靠背係相對於椅座一面下降一面後傾)，因此，即使將背架之後傾中心(轉動支點)位在較背殼板之後端更下方(或面前)，仍可毫無困難地搖動靠背。亦即，一面保持椅座與靠背之一體性，一面可使靠背以盡可能大的角度毫無困難地後傾，結果，儘管是椅座與靠背為一體化之外觀的椅子，卻可提高在搖動狀態下的舒適性。 In the invention of the present application, since the entire back panel is entirely lowered relative to the rear end of the seat panel (that is, the backrest is lowered with respect to the side of the seat), even if the back is The rear tilting center (rotating fulcrum) of the frame is located below (or in front of) the rear end of the backing plate, and the backrest can still be shaken without difficulty. That is, while maintaining the physical strength of the seat and the backrest, the backrest can be tilted back without difficulty at the largest possible angle. As a result, although the chair and the backrest are integrated, the chair can be improved. Comfort in the state of shaking.

當作為鉸鏈手段係，例如亦可於左右中間部設置鉸鏈部，在此情況下，因為須在防止就座者之體壓直接施加於鉸鏈部之狀態下確保連結功能及變形功能，因此，會有設計很麻煩，且同時構造亦產生複雜化之問題。對此，當作為鉸鏈手段之構成如第2發明，若採用左右側鉸鏈部，由於就座人之身體之體壓不會施加於側鉸鏈部上，因此，有設計容易並可簡化構造之優點。 In the case of the hinge means, for example, a hinge portion may be provided in the left and right intermediate portions. In this case, since the connection function and the deformation function are ensured while preventing the body pressure of the seated person from being directly applied to the hinge portion, There are problems with the design being cumbersome and complicated at the same time. On the other hand, as a configuration of the hinge means, according to the second aspect of the invention, if the left and right hinge portions are used, since the body pressure of the seated person is not applied to the side hinge portion, there is an advantage in that the design is easy and the structure can be simplified. .

雖然亦可個別製造座殼板及背殼板而以銷等加以連結，惟當如第3發明，若採用座殼板與背殼板之下端經由側鉸鏈部一體連接之構造(亦即，至少背殼板之下部與座殼板一體成形之構造)時，有可減輕構件管理的勞力和時間，同時可節 省連結作業之勞力和時間的優點。又由於側鉸鏈部之彎曲點係位在較座殼板之後端更靠近面前，因此，可一方面使背殼板之至少下部與座殼板成為一體成形品，一方面確實地實現在搖動之際背殼板相對於座殼板之後端全體地產生下降。 Although the seat shell plate and the back shell plate may be separately manufactured and joined by pins or the like, as in the third invention, the lower end of the seat shell plate and the back shell plate are integrally connected via the side hinge portion (that is, at least When the lower part of the back shell plate is integrally formed with the seat shell plate, there is a labor and time for reducing the management of the components, and at the same time The advantages of labor and time in connecting provinces. Moreover, since the bending point of the side hinge portion is closer to the front end than the rear end of the seat shell plate, on the one hand, at least the lower portion of the back shell plate and the seat shell plate can be integrally formed, and on the one hand, the rocking is surely realized. The back shell plate is entirely lowered relative to the rear end of the seat shell.

且在如第3發明，在至少背殼板之下部與座殼板一體成形之情況下，若靠背因人的憑靠而容易扭曲變形時，即有損身體的穩定性，同時有亦於鉸鏈部施加過大負荷而容易斷裂之虞。就此點，如實施形態，若設置補強用側肋於側鉸鏈部，即可提高側鉸鏈部之形狀保持性，可確保身體的支持穩定性，同時，抑制如扭轉之外力作用於側鉸鏈部，可提高耐久性。 Further, in the third invention, in the case where at least the lower portion of the back shell plate is integrally formed with the seat shell plate, if the backrest is easily twisted and deformed by the human backing, the stability of the body is impaired, and the hinge is also present at the hinge. The part is over-loaded and easily broken. In this regard, according to the embodiment, if the side rib for reinforcement is provided to the side hinge portion, the shape retainability of the side hinge portion can be improved, and the support stability of the body can be ensured, and at the same time, the force such as torsion can be suppressed from acting on the side hinge portion. Improves durability.

雖然椅座係亦可作為在搖動時不動的固定式，如第4發明，若採用連動於靠背之向後傾動而椅座後退之連動方式時，有抑制搖動時之身體伸展，並可以更加提高舒適性之優點。 Although the seat system can also be used as a fixed type that does not move when rocking, as in the fourth invention, if the interlocking mode in which the seat back is tilted and the seat back is reversed, the body stretching during the shaking can be suppressed, and the comfort can be further improved. The advantage of sex.

而且，在如第4發明椅座與靠背為連動之構成之情況下，當採用第5發明時，儘管為簡單構造，底座與背架卻可充分確保其左右橫寬。因此，可一方面穩定地保持著椅座與靠背，一方面使椅座與靠背產生連動。又由於底座之背支持部係位於腳支柱之後方，因此，腳支柱不會成為妨礙背架之向後傾動。 Further, in the case where the seat of the fourth invention is interlocked with the backrest, when the fifth invention is employed, the base and the back frame can sufficiently ensure the lateral width of the left and right sides despite the simple structure. Therefore, on the one hand, the seat and the backrest can be stably held, and on the other hand, the seat and the backrest can be interlocked. Moreover, since the back support portion of the base is located behind the foot support, the foot support does not hinder the backward tilting of the back frame.

雖然亦可一體成形背殼板全體及座殼板，惟由於此情形需 要很大的成形機，因此，成本很高，同時，有無法及時製造的可能性。對此，當如第6發明，將背殼板分割成上下來製造時，由於可使用廣為普及之成形機來製造，因此，可以抑制製造成本並及時製造。又，藉由事前準備複數種已改變上部背殼板之高度者，亦具有可簡單地應付靠背之高度變更的優點。 Although it is also possible to integrally form the entire back panel and the shell panel, it is necessary for this situation. A large forming machine is required, and therefore, the cost is high, and at the same time, there is a possibility that it cannot be manufactured in time. On the other hand, in the case of the sixth invention, when the back shell sheet is divided into up-and-down manufacturing, it can be manufactured by using a widely used molding machine, so that the manufacturing cost can be suppressed and the production can be performed in time. Moreover, by preparing a plurality of types of heights that have changed the upper back shell, it is also possible to easily cope with the change in the height of the backrest.

又由於分割成上下之背殼板係分別安裝於背架，因此，不會施加過大負荷於上下背殼板之連結部，不會因分割成形上下背殼板而發生強度降低的問題。更由於在搖動之際上下背殼板分別與背架一起後傾，因此，亦確保搖動之際背殼板之一體性，從而，上下背殼板相對作動，亦全無帶給使用者不舒適感的問題。 Further, since the back and outer shell plates which are divided into upper and lower sides are attached to the back frame, the connection portion between the upper and lower back shell plates is not excessively applied, and the strength of the upper and lower back shell sheets is not divided and the strength is lowered. Moreover, since the upper and lower back shells are respectively tilted back together with the back frame when shaking, it is also ensured that the back shell is one-piece in the shaking, so that the upper and lower back shells are relatively moved, and the belt is not comfortable to the user. Feelings of the problem.

又，在具有搖動功能使靠背後傾之情況下，當座緩衝墊及背緩衝墊為個別構件時，有在使用期間，於座緩衝墊與背緩衝墊之交界面發生高低差之虞，惟當採用第7發明時，由於背緩衝墊中的下部與座緩衝墊一體連結，因此，不會發生在使用期間於座緩衝墊與背緩衝墊之交界面出現高低差並損害美觀的問題。因此，品質面上亦為優異。 Moreover, in the case where the rocking function is used to tilt the backrest back, when the seat cushion and the back cushion are separate members, there is a difference in height between the seat cushion and the back cushion during use. According to the seventh aspect of the invention, since the lower portion of the back cushion is integrally coupled to the seat cushion, there is no problem that the height difference between the seat cushion and the back cushion is deteriorated during use and the appearance is impaired. Therefore, the quality surface is also excellent.

更且，當如第8發明，***成形緩衝墊於殼板時，由於緩衝墊經由開縫轉入座殼板及背殼板之裏側，因此，即使靠背之下端相對於椅座後端上下移動，仍不會發生緩衝墊的偏移，可確保保持形狀之特性。因此，可防止於使用期間，緩 衝墊產生凹陷的不當狀況。 Further, according to the eighth aspect of the invention, when the cushion is inserted into the casing, since the cushion is transferred to the inner side of the seat panel and the back panel via the slit, even if the lower end of the backrest moves up and down with respect to the rear end of the seat The cushion offset does not occur, ensuring the shape characteristics. Therefore, it can be prevented from being used during use. The pad creates an improper condition of the depression.

在背殼板分割成上下之情況下，雖然亦可成前視下部背殼板之上面與上部背殼板之下面成一直線狀的形態，惟當如本申請案第9發明，使上下背殼板利用凹凸形狀嵌合時，由於上下背殼板具有沿上下方向延伸之疊合面，因此，可提高連結強度。又可防止或抑制於表皮材起皺。 In the case where the back shell plate is divided into upper and lower sides, although the upper surface of the front lower back shell sheet and the lower surface of the upper back shell sheet may be formed in a straight line shape, as in the ninth invention of the present application, the upper and lower back shells are When the plate is fitted by the uneven shape, since the upper and lower back sheets have overlapping surfaces extending in the vertical direction, the joint strength can be improved. It can also prevent or inhibit the wrinkles of the skin material.

雖然於例如日本實用新案登錄公報第3031082中記載著於表皮材中構成靠背之部位成袋狀，惟當作為表皮材之固定手段例如使用紐線、金屬線時，有安裝作業煩瑣，且同時表皮材之張力難以一定的問題。就此點，當如第10發明，使用帶狀之緣構件時，可極簡單地進行表皮材之安裝，並同時將對於表皮材之張力產生一定，並可使品質產生穩定。 In Japanese Patent Application Laid-Open No. 3031082, for example, it is described that the portion constituting the backrest in the surface material is formed into a bag shape. However, when a fastening means for the surface material is used, for example, a wire or a metal wire is used, the mounting work is troublesome and the skin is simultaneously provided. The tension of the material is difficult to solve. In this regard, according to the tenth invention, when the belt-shaped edge member is used, the attachment of the surface material can be extremely easily performed, and at the same time, the tension with respect to the surface material can be made constant, and the quality can be stabilized.

根據如第11發明，由於藉由補強板的存在，可防止應力集中於特定部位，因此，即使背殼板係樹脂製，仍不會產生過厚，並可提高背殼板之強度。 According to the eleventh aspect of the invention, since the stress is concentrated on the specific portion by the presence of the reinforcing plate, even if the backing plate is made of a resin, the thickness is not excessively increased, and the strength of the backing plate can be improved.

其次，根據圖式來說明本申請案之發明的實施形態。於以下說明中為特定出方向而使用「前後」、「左右」用詞，此用詞普通以就座人之方向為基準。然而，前視係指與就座人對向之方向。雖然也使用「內」「外」用詞，卻於前視中，以面向椅子中心之方向為向內，於前視中，以自椅子中心朝左右外側之方向為向外。 Next, an embodiment of the invention of the present application will be described based on the drawings. In the following description, the words "before and after" and "left and right" are used for specific directions. This term is generally based on the direction of the seated person. However, the front view refers to the direction opposite the seated person. Although the words "inside" and "outside" are also used, in the forward view, the direction toward the center of the chair is inward, and in the front view, the direction from the center of the chair toward the left and right outside is outward.

(1).椅子概要 (1). Chair summary

首先，根據圖1~圖6，說明椅子之概要。本實施形態適用於旋轉椅子，如圖1所示，椅子具有：身體承受部3，係由椅座1與靠背2連成一體；腳裝置5，係具有腳支柱4；底座6，係安裝於腳支柱4之上端；以及背架7，係向後傾動自如地連結於底座6。腳裝置5係具有沿放射方向延伸之岐足，於各歧足之前端設置腳輪。底座6及背架7係鋁模鑄品或樹脂成形品。 First, an outline of a chair will be described with reference to Figs. 1 to 6 . This embodiment is applicable to a rotating chair. As shown in FIG. 1, the chair has a body receiving portion 3 which is integrally formed with the seat back 1 and a backrest 2; the foot device 5 has a foot support 4; and the base 6 is attached to The upper end of the leg strut 4 and the back frame 7 are rotatably coupled to the base 6 in the rearward direction. The foot device 5 has a foot that extends in the radial direction, and casters are provided at the front end of each of the arms. The base 6 and the back frame 7 are aluminum die casts or resin molded articles.

如由圖2、3可理解，身體承受部3係具有殼板以及與其一體成形之緩衝墊。殼板係具有構成椅座1之座殼板8、一體連結於座殼板8之後部之下部背殼板9以及形體相異於下部背殼板9之上部背殼板10，上部背殼板10之下端部連結於下部背殼板9之上端部。因此，藉由上下背殼板9、10構成靠背2之殼板。殼板8、9、10係樹脂成形品。 As can be understood from Figures 2 and 3, the body receiving portion 3 has a shell plate and a cushion integrally formed therewith. The shell plate has a seat shell plate 8 constituting the seat 1, a back shell plate 9 integrally joined to the lower portion of the seat shell plate 8, and a back shell plate 10 having a shape different from the upper back shell plate 9, and an upper back shell plate The lower end portion of the lower portion 10 is joined to the upper end portion of the lower back shell plate 9. Therefore, the shell of the backrest 2 is constituted by the upper and lower back shell sheets 9, 10. Shell plates 8, 9, and 10 are resin molded articles.

且針對背殼板使用之「下部」、「上部」用詞係用來明確指出分成上下之二元件，而非用來明確指出高度位置。因此，若有如本實施形態以上部背殼板10構成靠背2之大部分(70~80%左右)之情形，即會有以下部背殼板9構成靠背2之大部分之情形，亦可有上下背殼板9、10各成一半高度左右之情形。 The words "lower" and "upper" used for the back shell are used to clearly indicate the two components above and below, rather than to clearly indicate the height position. Therefore, if the upper back panel 10 constitutes most of the backrest 2 (about 70 to 80%) as in the present embodiment, the lower back panel 9 may constitute most of the backrest 2, and there may be The upper and lower back shells 9, 10 are each about half the height.

如於圖3(B)中所示，緩衝墊係分離成對應座殼板8及下部背殼板9之下部緩衝墊11以及對應上部背殼板10之上部 背緩衝墊12之構造。因此，與下部背殼板9之前面產生重疊之下部背緩衝墊11a一體形成於下部緩衝墊11。此等之緩衝墊11、12係分別***殼板8、9、10而***成形。如由圖5可理解，下部緩衝墊11係成覆蓋座殼板8及下部背殼板9表面之全體，同時以捲入至座殼板8及下部背殼板9之終緣部之裏側之方式而成形。另一方面，上部背緩衝墊12係成形成包住上部背殼板10之前面及後面之全體。 As shown in FIG. 3(B), the cushion is separated into a cushion portion 11 corresponding to the lower shell plate 8 and the lower back shell plate 9 and the upper portion of the corresponding upper back shell plate 10 The construction of the back cushion 12. Therefore, the lower back cushion 11a is integrally formed with the lower back surface of the lower back shell 9 in the lower cushion 11. These cushions 11, 12 are inserted into the shell plates 8, 9, 10, respectively, and are inserted and formed. As can be understood from FIG. 5, the lower cushion 11 is formed to cover the entire surface of the seat shell 8 and the lower back shell 9, and is wound into the inner side of the end edge portion of the seat shell 8 and the lower back shell 9. Formed by the way. On the other hand, the upper back cushion 12 is formed so as to surround the entire front and rear surfaces of the upper back shell 10.

身體承受部3係具有一體構造之表皮材13，表皮材13之中位於靠背2之部位係形成為自上方整個包圍背殼板9、10及其表裏之緩衝墊11、12之袋狀，表皮材13中對應椅座1之部位係自座殼板8之外周向下朝內被捲入。 The body receiving portion 3 has a skin material 13 having an integral structure, and a portion of the skin material 13 located at the backrest 2 is formed in a bag shape which surrounds the back shell sheets 9, 10 and their cushions 11 and 12 from above. The portion of the material 13 corresponding to the seat 1 is drawn inwardly from the outer periphery of the seat panel 8.

座殼板8與下部背殼板9僅經由位於左右兩側之側鉸鏈部14連結成一體，座殼板8與下部背殼板9係在左右側鉸鏈部14之間被開縫15所分斷。因此，下部背殼板9(靠背2)係可藉由側鉸鏈部14之變形，相對於座殼板8(相對於椅座1)，相對地向後傾動。 The seat shell 8 and the lower back shell 9 are integrally joined only via the side hinge portions 14 on the left and right sides, and the seat shell 8 and the lower back shell 9 are separated by the slit 15 between the left and right hinge portions 14. Broken. Therefore, the lower back shell 9 (backrest 2) can be relatively tilted backward relative to the seat shell 8 (relative to the seat 1) by the deformation of the side hinge portion 14.

開縫15係形成為其左右兩端部向面前延伸之俯視U字形，因此，側鉸鏈部14係成為前後較長之形態，彎曲點14a位於前端。因此，側鉸鏈部14之彎曲點14a係位於較座殼板8之後端更面前，其結果，容許下部背殼板9則相對於座殼板8之後端全體產生下降(沉入)。 The slit 15 is formed in a U-shape in a plan view in which the left and right end portions thereof extend in the front direction. Therefore, the side hinge portion 14 is formed to have a long front and rear direction, and the bending point 14a is located at the front end. Therefore, the bending point 14a of the side hinge portion 14 is located more forward than the rear end of the seat panel 8, and as a result, the lower back shell 9 is allowed to fall (sink) with respect to the entire rear end of the seat panel 8.

如於圖2、4中所示，底座6係成大致於俯視不為方形且 上下開口之框構造，因此，具有後構件6a、左右側構件6b及前構件6c，此等後構件6a、左右側構件6b及前構件6c構成底座6之本體部。於後構件6a之左右中間部開設有腳支柱安裝孔17，同時，於後構件6a之後端部形成使背支持部18向後突出之狀態，背架7以左右橫長之管製支軸19可轉動地連結於背支持部18。 As shown in Figures 2 and 4, the base 6 is generally not square in plan view and Since the frame structure of the upper and lower openings is provided, the rear member 6a, the left and right side members 6b, and the front member 6c are provided, and the rear member 6a, the left and right side members 6b, and the front member 6c constitute the main body portion of the base 6. A leg strut mounting hole 17 is formed in the left and right intermediate portions of the rear member 6a. At the same time, the rear end portion 6a is formed in a state in which the back support portion 18 is protruded rearward. The back frame 7 is supported by the left and right horizontally long support shafts 19. The back support portion 18 is rotatably coupled.

於底座6之後面與背架7之下部前端之間之中且背支持部18之左右兩側，如由圖1(B)可理解，雖然空出有空間，此空間之間隔卻設定成即使在因搖動而背架7傾動狀態下，仍保持較一般成人之手指更大之尺寸的大小。因此，即使人的指尖***底座6與背架7間之間隙，仍不會被夾住。且，如於圖6中所示，底座6之後構件6a係形成向上開口之中空狀，於其內部形成肋。於後構件6a上面安裝有底座蓋6d。 Between the rear surface of the base 6 and the front end of the lower portion of the back frame 7, and the left and right sides of the back support portion 18, as can be understood from Fig. 1(B), although there is space for vacancy, the space is set to even In the state in which the back frame 7 is tilted due to shaking, it still maintains a size larger than that of a general adult finger. Therefore, even if the fingertip of the person is inserted into the gap between the base 6 and the back frame 7, it is not caught. Further, as shown in Fig. 6, the member 6a after the base 6 is formed into a hollow shape which is open upward, and ribs are formed inside thereof. A base cover 6d is attached to the rear member 6a.

如於圖2、4中所示，前後長形之軌道構件20前後滑動自如地安裝於底座6之左右側構件6b，座殼板8前後移動自如地安裝於軌道構件20。軌道構件20係抵抗裝於其內之彈簧21而後退移動。雖然軌道構件20為中間支持體之一例子，卻亦可為一體形成相互嵌合之軌道構件於座殼板8及底座6。又亦可利用中間支持體之一例子之中間板來支持座殼板，前後滑動自如地安裝中間板於底座6。 As shown in FIGS. 2 and 4, the front and rear elongated rail members 20 are slidably attached to the left and right side members 6b of the base 6, and the seat panel 8 is movably attached to the rail member 20 in the front and rear. The rail member 20 moves backward against the spring 21 housed therein. Although the rail member 20 is an example of the intermediate support body, it is also possible to integrally form the rail members that are fitted to each other on the seat panel 8 and the base 6. Alternatively, the intermediate plate of one example of the intermediate support may be used to support the seat pan, and the intermediate plate may be slidably attached to the base 6 in the front and rear.

例如，如於圖2(A)中所示，背架7具有構成其下端之左右橫長之基部22，此基部22之左右中間部利用支軸19，經 由軸承架23連結於底座6之背支持部18。又，同樣地，如由圖2(A)可理解，於在背架7中之基部22的左右兩端部，突設有向上之軸承肋25(位於設在軌道構件20後端之左右軸承部24間)，軌道構件20之軸承部24與背架7之軸承肋25以左右橫長之銷26來連結。 For example, as shown in FIG. 2(A), the back frame 7 has a base portion 22 which constitutes the left and right lateral lengths of the lower end thereof, and the left and right intermediate portions of the base portion 22 are supported by the support shaft 19, The back support portion 18 of the base 6 is coupled to the bearing frame 23. Further, similarly, as can be understood from FIG. 2(A), the upper and lower end portions of the base portion 22 in the back frame 7 are provided with upward bearing ribs 25 (located on the left and right bearings provided at the rear end of the rail member 20). In the portion 24, the bearing portion 24 of the rail member 20 and the bearing rib 25 of the back frame 7 are connected by the left and right horizontally long pins 26.

如於圖2(A)中所示，於在背架7中之基部22的左右兩端部，一體形成背支柱27(略微向後後退之後向上立起)，上部背殼板10以螺絲(小螺絲)29鎖緊連結於突面部28(向前突設於背支柱27之上端部)。左右背支柱27係配置於靠背2之左右側端部的後面。因為，靠背2之背面係大幅地露出，因此感覺上很簡單明瞭。 As shown in FIG. 2(A), the back pillars 27 are integrally formed at the left and right end portions of the base portion 22 in the back frame 7, which are vertically erected rearward, and the upper back shell plate 10 is screwed (small). The screw 29 is locked and coupled to the convex portion 28 (protruding forwardly at the upper end of the back post 27). The left and right back pillars 27 are disposed behind the left and right end portions of the backrest 2. Because the back of the backrest 2 is largely exposed, it is very simple and straightforward.

例如，如於圖3中所示，在上部背殼板10之前面下部形成向前開口之左右橫長之凹處30，金屬製(鋼板製)之橫長補強板31嵌入凹處30。於補強板31膨出形成左右橫長肋，螺絲29螺入形成於補強板31之凸出成形部32。因此，背支柱27、上部背殼板10與補強板31以螺絲(小螺絲)29一起鎖住。 For example, as shown in FIG. 3, the left and right horizontally long recesses 30 of the front opening are formed in the lower portion of the front surface of the upper back shell plate 10, and the horizontally long reinforcing plate 31 made of metal (made of a steel plate) is fitted into the recess 30. The reinforcing plate 31 is swelled to form left and right horizontally long ribs, and the screw 29 is screwed into the convex forming portion 32 formed on the reinforcing plate 31. Therefore, the back pillar 27, the upper back shell 10 and the reinforcing plate 31 are locked together by screws (small screws) 29.

於背支柱27之上端一體形成在左右向外彎曲之後延伸至面前之形狀之肘本體33，於肘本體33安裝著覆蓋其上面全體之肘蓋34。於肘蓋34一體形成自後方覆蓋背支柱27上部之向下後壁34a。 An elbow body 33 extending in the shape of the front face is formed integrally at the upper end of the back strut 27, and an elbow cover 34 covering the entire upper surface thereof is attached to the elbow body 33. The elbow cover 34 is integrally formed with a downward rear wall 34a covering the upper portion of the back post 27 from the rear.

(2).底架與背架之連結部 (2). The joint between the chassis and the back frame

其次，亦參照圖7以下之圖式，說明各部位之詳細。首先，說明底座6與背架7之連結部。 Next, the details of each part will be described with reference to the drawings of Fig. 7 and below. First, the connection portion between the base 6 and the back frame 7 will be described.

雖如上述，背架7之左右中間部經由軸承架23連結於底座6之背支持部18，卻如於圖9(B)(D)中所明示，軸承架23不能左右偏移地嵌入之凹處36形成於背架7之基部22，自上方***背架7之基部22之小螺絲37被螺入軸承架23。支軸19係貫通設於底座6之背支持部18之左右軸承部18a，藉由背架7之凹處36保持不能左右鬆脫。 As described above, the left and right intermediate portions of the back frame 7 are coupled to the back support portion 18 of the base 6 via the bearing frame 23, but as clearly shown in FIG. 9(B) and (D), the bearing frame 23 cannot be embedded in the right and left direction. A recess 36 is formed in the base portion 22 of the back frame 7, and a small screw 37 inserted into the base portion 22 of the back frame 7 from above is screwed into the bearing frame 23. The support shaft 19 penetrates the left and right bearing portions 18a provided on the back support portion 18 of the base 6, and is held by the recess 36 of the back frame 7 so as not to be loosened left and right.

如於圖9(D)中所示，軸承架23係呈具有上板及背面板之逆L形，且於背面板之下端具有向面前突出之限制片23a。另一方面，嵌入安裝彈性支持體38於在底座6中之背支持部18之內部，當軸承架23因搖動而轉動時，其限制片23a接觸彈性支持體38。彈性支持體38係為附頭銷狀之形態，左右配置2個。 As shown in Fig. 9(D), the bearing frame 23 has an inverted L shape having an upper plate and a rear plate, and has a restricting piece 23a protruding toward the front at a lower end of the back plate. On the other hand, the elastic supporting body 38 is fitted and mounted inside the back supporting portion 18 in the base 6, and when the bearing frame 23 is rotated by the shaking, the regulating piece 23a contacts the elastic supporting body 38. The elastic support body 38 is in the form of a pin-shaped pin, and two of them are arranged on the left and right.

雖然如於圖13(B)中所示，支軸19係貫通軸承架23之側板23a，同時嵌入底座6之背支持部18之左右軸承部18a，樹脂製軸襯39、40嵌入軸承架23之側板23a及底座6之軸承部18a。 Although the support shaft 19 penetrates the side plate 23a of the bearing frame 23 and is fitted into the left and right bearing portions 18a of the back support portion 18 of the base 6, the resin bushings 39, 40 are embedded in the bearing frame 23 as shown in Fig. 13(B). The side plate 23a and the bearing portion 18a of the base 6.

雖然如此，當使用樹脂製軸襯39、40時，支軸19之旋轉變為平滑，同時亦有可防止摩擦聲音之優點，卻因與支軸19之相對移動、與軸承架23及軸承部18a之相對移動，而有軸襯39、40產生摩擦而發生樹脂粉之虞。因此，於本實 施形態中，如圖13(B)，於軸承架23之側板23b的下端彎曲形成左右向外突出之收粉片23c。因此，假設即使樹脂製軸襯39、40產生摩擦而掉落粉塵，仍因其粉塵貯存於側板23b內，而不會有樹脂粉掉在地板而破壞美觀的問題。於圖2(B)中未顯示收粉片23c。 Nevertheless, when the resin bushings 39, 40 are used, the rotation of the support shaft 19 becomes smooth, and there is also an advantage of preventing the friction sound, but the relative movement with the support shaft 19, the bearing frame 23 and the bearing portion The relative movement of 18a occurs, and the bushings 39, 40 are rubbed to cause a flaw in the resin powder. Therefore, in this reality In the embodiment, as shown in Fig. 13(B), the lower end of the side plate 23b of the bearing frame 23 is bent to form a powder collecting sheet 23c which protrudes left and right outward. Therefore, it is assumed that even if the resin bushings 39, 40 are rubbed and the dust is dropped, the dust is stored in the side plates 23b, and there is no problem that the resin powder falls on the floor and the appearance is deteriorated. The powder collecting sheet 23c is not shown in Fig. 2(B).

(3).支持機構部 (3). Supporting Department

其次，說明以軌道構件20為中心之支持機構部。如圖8、10、11所示，軌道構件20係板金製，成向下開口之溝道狀(溝形)形態，於座殼板8左右各設一對自左右兩側包圍軌道構件20之向下限制肋41。 Next, a support mechanism portion centering on the rail member 20 will be described. As shown in Figs. 8, 10, and 11, the rail member 20 is made of sheet metal and has a channel-like (groove-shaped) shape that is open downward. A pair of left and right sides of the seat shell plate 8 surround the rail member 20 from the left and right sides. The ribs 41 are restricted downward.

如於圖10(B)中所示，自內外接近軌道構件20之定位肋42一體設於向下限制肋41，且形成於向下限制肋41之卡合爪44自下方與切出形成於軌道構件20之前後長形之止動片43產生接觸。因此，座殼板8保持成相對於軌道構件20不能向上脫離，且同時座殼板8與軌道構件20雖只是若干可沿前後方向產生相對移動。 As shown in FIG. 10(B), the positioning rib 42 that approaches the rail member 20 from the inside and the outside is integrally provided to the downward restricting rib 41, and the engaging claw 44 formed in the downward restricting rib 41 is formed from the lower side and the cut-out. The track member 20 is brought into contact with the front elongated stopper piece 43. Therefore, the seat panel 8 is held so as not to be detachable upward relative to the rail member 20, and at the same time, the seat panel 8 and the rail member 20 are only relatively movable in the front-rear direction.

如於圖8中明示，左右橫長之導銷45不能前後移動地***通於軌道構件20之前端部，導銷45係插通導孔47，該導孔47形成於固定在底座6之側導件6b之導引體46。導孔47形成為前後長形之長孔，因此，軌道構件20與座殼板8可一起前後滑動。 As clearly shown in FIG. 8, the left and right laterally long guide pins 45 are inserted into the front end portion of the rail member 20 so as not to be movable back and forth, and the guide pin 45 is inserted through the guide hole 47 formed in the base 6 The guide body 46 of the side guide 6b. The guide hole 47 is formed as an elongated hole which is long in the front and rear, and therefore, the rail member 20 and the seat panel 8 can slide back and forth together.

導引體46之前部係嵌入突設於底座6之側導件6b之台錐 形突面體48，以小螺絲固定於此突面體48。因此，於導引體46之前部，嵌入突面體48之孔49向下開口。又，於導引體46之下面形成四方框狀定位突起46a，另一方面，於底座6之側導件6b開設有定位突起46a恰好嵌入之長方形定位孔46b。於底座6之側構件6b，一體形成自外側保護軌道構件20之前後長形之堤岸部51。 The front portion of the guiding body 46 is embedded in the taper of the side guide 6b protruding from the base 6. The shaped body 48 is fixed to the projecting body 48 with small screws. Therefore, in the front portion of the guide body 46, the hole 49 of the insertion projection body 48 is opened downward. Further, a quadrangular positioning projection 46a is formed on the lower surface of the guide body 46. On the other hand, the side guide 6b of the base 6 is provided with a rectangular positioning hole 46b into which the positioning projection 46a is fitted. The side member 6b of the base 6 is integrally formed with a bank portion 51 which is formed in a front and rear shape from the outer side of the outer rail member 20.

於構成軌道構件20之左右側板20a(例如參照圖8)之前端並於下端部突設若干尺寸之前突起52，且包含前突起52之軌道構件20之前端部下面係構成隨著側視向面則前高度變高之前傾斜面53。另一方面，於導引體46形成軌道構件20之前突起52無法上下移動地嵌入之左右前卡合溝54。且前卡合溝54的下面係形成與前傾斜面53重疊之傾斜面，於前卡合溝54之上部位係形成隨著側視向面前變高之傾斜導引面55。此等前突起52等之意義說明於後。 A plurality of size front protrusions 52 are formed at the front end of the left and right side plates 20a (see, for example, FIG. 8) constituting the rail member 20, and a plurality of front protrusions 52 are protruded from the lower end portion, and the front end portion of the rail member 20 including the front protrusions 52 is formed along the side viewing surface. Then, the front surface height becomes high before the inclined surface 53. On the other hand, the left and right front engagement grooves 54 are fitted into the protrusions 52 before the guide member 46 forms the rail member 20. An inclined surface that overlaps the front inclined surface 53 is formed on the lower surface of the front engagement groove 54, and an inclined guide surface 55 that becomes higher in front of the front side is formed in the upper portion of the front engagement groove 54. The meaning of these front protrusions 52 and the like is explained later.

例如於圖8中所示，前部彈簧支座50安裝於軌道構件20中的大致前後中間部，上述彈簧(壓縮螺旋彈簧)21藉由前部彈簧支座50從面前側支持著。於軌道構件20之側板20a中安裝前部彈簧支座50的部位係形成向後側開口之切開部56，自下方將突設於前部彈簧支座50之左右側面之葉片57***切開部56之前端緣56a與後側之止動片43之間。葉片57成具有向前突出部之俯視L形之形態，因此，前部彈簧支座50保持不能左右偏移。 For example, as shown in Fig. 8, the front spring holder 50 is attached to substantially the front and rear intermediate portions of the rail member 20, and the spring (compression coil spring) 21 is supported from the front side by the front spring holder 50. The portion where the front spring holder 50 is attached to the side plate 20a of the rail member 20 is formed as a cut-out portion 56 that opens to the rear side, and the blade 57 projecting from the left and right sides of the front spring holder 50 is inserted into the cut portion 56 from below. The front end edge 56a is between the front end edge 56a and the rear side stop piece 43. The blade 57 has a shape in which the forward projection is L-shaped in plan view, and therefore, the front spring holder 50 is kept from being displaced left and right.

前部彈簧支座50之下面係形成前視向下凸出之彎曲面50a，因此，於底座6之側導件6b係形成對應前部彈簧支座50之彎曲面50a之向上凹入之導溝58。 The lower surface of the front spring support 50 forms a curved surface 50a that protrudes downward in the front view. Therefore, the side guide 6b of the base 6 forms an upward concave guide corresponding to the curved surface 50a of the front spring support 50. Ditch 58.

彈簧21係藉由後部彈簧支座61從後面支持。後部彈簧支座61係成向下開口之中空狀形態，自上方嵌入形成於底座6之側導件6b之支持突起62。因此，例如即使為樹脂製，仍確實保持不能前後偏移。又於後部彈簧支座61之下端係一體形成向內突出之凸緣片61a，凸緣片61a以小螺絲固定於底座6。 The spring 21 is supported from the rear by a rear spring mount 61. The rear spring holder 61 is formed in a hollow shape that is opened downward, and the support protrusion 62 formed on the side guide 6b of the base 6 is fitted from above. Therefore, for example, even if it is made of a resin, it is surely prevented from shifting back and forth. Further, a flange piece 61a projecting inwardly is integrally formed at a lower end of the rear spring holder 61, and the flange piece 61a is fixed to the base 6 with a small screw.

且，於前後部彈簧支座50、61係設置有保持彈簧21不能偏移之錐(台錐狀)之突起。因此，在組裝之際，彈簧21與彈簧支座50、61自動地保持同心。雖然如圖3，於後部彈簧支座61之面前安裝著用以解除腳支柱4之上鎖之昇降操作槓桿63，卻因與本申請案無直接關係而省略說明。 Further, the front and rear spring holders 50, 61 are provided with protrusions that prevent the spring 21 from being deflected by the taper (the taper shape). Therefore, the spring 21 and the spring holders 50, 61 are automatically kept concentric at the time of assembly. Although the lifting operation lever 63 for releasing the lock on the foot support 4 is attached to the front spring support 61 in front of the rear spring support 61, the description is omitted because it is not directly related to the present application.

如前面說明，於軌道構件20之後端部係形成軸承部24，軸承部24藉由連結銷26連結於背架7之軸承肋25。此點明示於圖7。亦即，如於圖7中所示，背架7之軸承肋25係形成俯視剖面向內開口溝形(字形)，樹脂製輔助軸承64嵌入其內部，軸襯65被分別嵌入軸承部24。又，於軌道構件20之後端彎曲形成接近軸承肋25之前面之向下止動片66。 As described above, the bearing portion 24 is formed at the rear end portion of the rail member 20, and the bearing portion 24 is coupled to the bearing rib 25 of the back frame 7 by the joint pin 26. This point is clearly shown in Figure 7. That is, as shown in FIG. 7, the bearing ribs 25 of the back frame 7 are formed in a plan view in the shape of an inwardly open groove ( The font-shaped auxiliary bearing 64 is embedded in the inside thereof, and the bushing 65 is fitted into the bearing portion 24, respectively. Further, the rear end of the rail member 20 is bent to form a downward stopper piece 66 which is close to the front surface of the bearing rib 25.

(4).軌道構件之連結步驟(組裝步驟) (4). Connecting step of the rail member (assembly step)

其次，以軌道構件20之安裝為中心來說明組裝步驟的一部分。如由圖12可理解，當以軌道構件20連結底座6與背架7時，首先，固定導引體46及後部彈簧支座61於底座6，其次，固定軌道構件20、前部彈簧支座50及彈簧21於底座6，其次，藉導銷45連結軌道構件20之前端部於導引體46，此後，藉連結銷26連結軌道構件20之後端於背架7之軸承肋25。 Next, a part of the assembly procedure will be described centering on the mounting of the rail member 20. As can be understood from FIG. 12, when the base member 6 and the back frame 7 are coupled by the rail member 20, first, the guide body 46 and the rear spring holder 61 are fixed to the base 6, and secondly, the rail member 20 and the front spring holder are fixed. 50 and the spring 21 are on the base 6, and secondly, the front end of the rail member 20 is joined to the guide body 46 by the guide pin 45. Thereafter, the rail member 20 is coupled to the bearing rib 25 of the back frame 7 by the joint pin 26.

其次，雖然當就座人憑靠於靠背2時，靠背2將彈簧21壓縮變形而後傾，卻因在搖動之際，彈簧21自尚未完全壓縮狀態開始壓縮時，在少許的力量下彈簧21即產生壓縮，因此，靠背2則急遽後傾而危險。因此，須施加初期荷重(預張力)於彈簧21。亦即，在裝上軌道構件20之狀態下，彈簧21須壓縮至某一程度。就此而言，雖然亦可使用專用夾具，一面保持向後推壓軌道構件20之狀態，一面插通導銷45於導引體46，其作業性卻不佳。 Secondly, although the seat back 2 compresses and deforms the spring 21 when the seated person leans against the backrest 2, the spring 21 is under a little force when the spring 21 starts to compress from the state of being not fully compressed at the time of shaking. Compression is generated, so the backrest 2 is dangerously sloping backwards. Therefore, an initial load (pretension) must be applied to the spring 21. That is, the spring 21 must be compressed to a certain extent in the state in which the rail member 20 is attached. In this regard, although the dedicated jig can be used, while the rail member 20 is pressed rearward, the guide pin 45 is inserted into the guide body 46, which is inferior in workability.

對此，本實施形態藉由設於軌道構件20之前端之前突起52等之作用，只要向下壓緊軌道構件20，即可成壓縮彈簧21之狀態而裝上軌道構件20。 On the other hand, in the present embodiment, by providing the projections 52 and the like before the front end of the rail member 20, the rail member 20 can be attached to the state of the compression spring 21 by pressing the rail member 20 downward.

亦即，當在以後部彈簧支座61支持彈簧21狀態下向下壓住軌道構件20時，由於彈簧21成已伸張狀態，因此，軌道構件20之前突起52接觸導引體46之傾斜導面55，卻因前突起52之下面亦傾斜，當向下強壓軌道構件20時，藉由傾 斜面53、55之導引作用，軌道構件20一面壓縮彈簧21而後退，一面下降，當完成壓下時，前突起52藉由彈簧21的力量來前進，而嵌入前卡合溝54。 That is, when the rail member 20 is pressed downward in a state where the rear spring holder 61 supports the spring 21, since the spring 21 is in the extended state, the front projection 52 of the rail member 20 contacts the inclined guide surface of the guide body 46. 55, but because the underside of the front protrusion 52 is also inclined, when the rail member 20 is strongly pressed downward, by tilting With the guiding action of the inclined faces 53, 55, the rail member 20 is retracted while being compressed by the spring 21, and is lowered. When the pressing is completed, the front projection 52 is advanced by the force of the spring 21, and is inserted into the front engaging groove 54.

因此，於本實施形態中，在施加預張力於彈簧21之狀態下裝上軌道構件20，卻不使用特別夾具而簡單地被實現。又由於當導銷45插通導引體46時，軌道構件20保持不能鬆脫，同時，即使軌道構件20之前端及後端之任一者欲被舉起，軌道構件20仍保持不能立起，因此，以連結銷26連結於背架7之軸承肋25之作業亦可安全地進行。 Therefore, in the present embodiment, the rail member 20 is attached while the pretension is applied to the spring 21, but it is simply realized without using a special jig. Further, since the rail member 20 remains undetachable when the guide pin 45 is inserted through the guide body 46, the rail member 20 remains unable to stand up even if either of the front end and the rear end of the rail member 20 is to be lifted. Therefore, the work of connecting the bearing ribs 25 of the back frame 7 with the joint pins 26 can be performed safely.

如上述，當安裝軌道構件20時，雖然就正規作業而言，最後進行利用連結銷26於背架7之連結，惟可以考慮到因作業者之失誤，在先前進行利用連結銷26之連結之後，強拉軌道構件20後退而裝上於底座6。此時，當在壓縮彈簧21之狀態下，軌道構件20向上轉動時，而有彈簧21之彈性力一口氣被釋放而構件散開之虞。 As described above, when the rail member 20 is attached, the connection of the joint pin 26 to the back frame 7 is finally performed for the normal operation, but it is considered that the operator has made a mistake after the previous connection by the joint pin 26 The strong pull rail member 20 is retracted and mounted on the base 6. At this time, when the rail member 20 is rotated upward in the state of the compression spring 21, the elastic force of the spring 21 is released and the member is dissipated.

針對此點，如上述，於軌道構件20之後端設置向下之止動片66來應付。亦即，如由圖7(C)所示一點鏈線可理解，假設即使軌道構件20以連結銷26為中心欲彈起轉動，仍因止動片66抵接軸承肋25之前端而無法彈起轉動，因此，假設即使發生組裝順序的錯誤，仍可防止構件散開而成為危險之狀態。 In response to this, as described above, a downward stopper piece 66 is provided at the rear end of the rail member 20 to cope. That is, as can be understood from the point chain shown in Fig. 7(C), it is assumed that even if the rail member 20 is to be rotated about the joint pin 26, the stopper piece 66 cannot abut against the front end of the bearing rib 25. Rotation is performed, and therefore, it is assumed that even if an error in the assembly sequence occurs, the member can be prevented from being scattered and become a dangerous state.

(5).靠背之構造 (5). The structure of the backrest

其次，說明靠背2之構造。例如於圖2、3中所示，於側鉸鏈部14除了其前端形成向上突出之側肋68，藉此，使彎曲點14a位於側鉸鏈部14之前端部。藉由側肋68之補強效果，下部背殼板9的剛性提高(難以扭曲)。 Next, the configuration of the backrest 2 will be described. For example, as shown in Figs. 2 and 3, the side hinge portion 14 is formed with an upwardly projecting side rib 68 except for its front end, whereby the bending point 14a is located at the front end portion of the side hinge portion 14. By the reinforcing effect of the side ribs 68, the rigidity of the lower back shell 9 is increased (it is difficult to twist).

例如於圖14中所示，在下部背殼板9及上部背殼板10之背面形成縱橫延伸之多數補強肋69，於補強肋69所圍之多數部位開設有窗孔70。如上述，於上下背殼板9、10，在其前面及裏面兩者***成形緩衝墊12、11，在***成形之際，樹脂材料係通過窗孔70，轉入至背殼板9、10的裏面。 For example, as shown in FIG. 14, a plurality of reinforcing ribs 69 extending in the longitudinal direction and the transverse direction are formed on the back surface of the lower back shell 9 and the upper back shell 10, and a window hole 70 is formed in a plurality of portions surrounded by the reinforcing ribs 69. As described above, in the upper and lower back shell plates 9, 10, the forming cushions 12, 11 are inserted in the front and the back thereof, and at the time of insert molding, the resin material is transferred to the back shell sheets 9, 10 through the window holes 70. Inside.

如上述，上部背殼板10係構成靠背2之全部高度之中相當大的部分(7成左右)。於上部背殼板10的下面及下部背殼板9的上面分別形成疊合部肋板(疊合面)71、72，於上部背殼板10的下面向下突設有位於左右中間部之中央卡合突起73、位於左右兩端部之側卡合突起74以及位於中央卡合突起73與側卡合突起74間之中間定位突起75。 As described above, the upper back shell panel 10 constitutes a relatively large portion (about 70%) of the entire height of the backrest 2. On the lower surface of the upper back shell plate 10 and the upper surface of the lower back shell plate 9, overlapping ribs (lamination faces) 71, 72 are respectively formed, and the lower left portion of the upper back shell plate 10 is protruded downwardly at the left and right intermediate portions. The center engaging projections 73, the side engaging projections 74 located at the left and right end portions, and the intermediate positioning projections 75 located between the center engaging projections 73 and the side engaging projections 74.

另一方面，如圖3(A)及圖15，於下部背殼板9的上部係成向上開口狀態形成有中央卡合突起73嵌入之中央袋部76、側卡合突起74嵌入之側袋部77以及中間定位突起75嵌入之中間袋部78。如於圖15中所示，於中央卡合突起73形成傾斜向上突出之卡合爪73a，此卡合爪73a自下方鉤扣卡合於設在中央袋部76之中央卡合孔76a。 On the other hand, as shown in Fig. 3 (A) and Fig. 15, the upper portion of the lower back cover 9 is formed with the central pocket portion 76 in which the central engagement projection 73 is fitted and the side pocket in which the side engagement projection 74 is fitted. The portion 77 and the intermediate positioning portion 75 are fitted into the intermediate pocket portion 78. As shown in FIG. 15, the central engaging projection 73 is formed with an engaging claw 73a that protrudes obliquely upward, and the engaging claw 73a is engaged with the central engaging hole 76a provided in the central pocket portion 76 from the lower hook.

同樣地，於側卡合突起74係形成傾斜向上突出之卡合爪 74a，此卡合爪74a自下方鉤扣設於側袋部77之側卡合孔77a。中央卡合突起73係成向後側倒下之姿勢，側卡合突起74成向面前側倒下之姿勢。 Similarly, the side engaging projections 74 form an engaging claw that protrudes obliquely upward. 74a, the engaging claw 74a is hooked from the lower side to the side engaging hole 77a of the side pocket portion 77. The center engagement protrusion 73 is in a posture in which it is lowered toward the rear side, and the side engagement protrusion 74 is in a posture in which it is lowered toward the front side.

如於圖15(A)中所示，假設於上部背殼板10與下部背殼板9間空出間隔的情形，當側卡合突起74與下部背殼板9之間隔尺寸為E1，中央卡合突起73與下部背殼板9之間隔尺寸為E2，中間定位突起75與下部背殼板9之間隔尺寸為E3時，成E1<E2<E3之關係。因此，各突起73、74、75係按側卡合突起74、中央卡合突起73、中間定位突起75之順序嵌入至下部背殼板9。 As shown in Fig. 15(A), assuming that the upper back panel 10 and the lower back panel 9 are spaced apart from each other, when the side engaging projection 74 and the lower back panel 9 are spaced apart from each other by E1, the center is The distance between the engaging projection 73 and the lower back shell 9 is E2, and when the spacing between the intermediate positioning projection 75 and the lower back panel 9 is E3, E1 < E2 < E3. Therefore, the projections 73, 74, and 75 are fitted to the lower back shell 9 in the order of the side engaging projections 74, the center engaging projections 73, and the intermediate positioning projections 75.

例如圖15(A)(亦參照圖3)，於前視中，下部背殼板9之疊合部肋板72係包含其中間部之相當範圍成向下凹入之形狀，另一方面，上部背殼板10之疊合部肋板71係包含其左右中間部之相當範圍成向下突出之形狀。 For example, in Fig. 15(A) (also referring to Fig. 3), in the front view, the overlapping portion rib 72 of the lower back shell 9 includes a shape in which the middle portion thereof is recessed downwardly, and, on the other hand, The overlapping portion rib 71 of the upper back shell 10 includes a shape in which the right and left intermediate portions are in a range that protrudes downward.

亦即，上下背殼板9、10之疊合面係成凹凸狀態。而且，在下部背殼板9中之疊合部肋板72之凹部72a之內側面72b係成傾斜，中間袋部78係形成跨凹部72a之底面72c及傾斜狀內側面72b之狀態。另一方面。上部背殼板10中疊合部肋板71之凸部71a之外側面71b係亦成傾斜，中間定位突起75係形成跨凸部71a之下面71c及傾斜狀外側面71b之狀態。 That is, the overlapping surfaces of the upper and lower back sheets 9, 10 are in an uneven state. Further, the inner side surface 72b of the concave portion 72a of the overlapping portion rib 72 in the lower back shell plate 9 is inclined, and the intermediate pocket portion 78 is formed to extend across the bottom surface 72c of the concave portion 72a and the inclined inner side surface 72b. on the other hand. The outer side surface 71b of the convex portion 71a of the overlapping portion rib 71 in the upper back shell plate 10 is also inclined, and the intermediate positioning projection 75 is formed to extend across the lower surface 71c of the convex portion 71a and the inclined outer side surface 71b.

例如於圖16(A)中所示，上部背殼板10之下部係於俯視 中成向前凹狀而凹入，因此，配置於上部背殼板10之下部之補強板31於俯視中亦呈向前凹狀而彎曲。亦即，補強板31之中包含其中間部之相當大範圍係形成於俯視中呈左右橫長直線狀延伸之基部，惟靠近左右兩端之某程度之範圍形成向面前側彎曲之傾斜部31a，更於傾斜部31a之前端形成於俯視中呈左右橫長之端部31b。而且，凸出成形部32向前突設於端部31b，螺絲29自後方螺入形成於凸出成形部32之陰螺紋。 For example, as shown in FIG. 16(A), the lower portion of the upper back shell 10 is attached to the top. The center plate is recessed in the forward direction and is recessed. Therefore, the reinforcing plate 31 disposed at the lower portion of the upper back shell plate 10 is also concavely curved in a plan view. In other words, a substantial portion of the reinforcing plate 31 including the intermediate portion thereof is formed in a base portion extending linearly in a horizontally long direction in a plan view, but a certain extent to the left and right ends forms an inclined portion 31a bent toward the front side. Further, the front end of the inclined portion 31a is formed at an end portion 31b which is horizontally long and left in plan view. Further, the convex molding portion 32 is protruded forward from the end portion 31b, and the screw 29 is screwed into the female screw formed in the convex molding portion 32 from the rear.

如於圖14~16中所示，在上部背殼板10係形成背支柱27之突面部28嵌入之支承座79。又，於背支柱27中在突面部28處之背面係形成螺絲27的頭埋入之埋頭鑽孔80。而且，埋頭鑽孔80及螺絲27的頭為肘蓋34之後壁34a所覆蓋。因此，可防止美觀的惡化。 As shown in Figs. 14 to 16, the upper back shell plate 10 forms a support seat 79 into which the projection portion 28 of the back stay 27 is fitted. Further, in the back pillar 27, a countersunk hole 80 in which the head of the screw 27 is buried is formed on the back surface of the projection portion 28. Moreover, the head bore 80 and the head of the screw 27 are covered by the wall 34a behind the elbow cover 34. Therefore, the deterioration of the appearance can be prevented.

如於圖2(A)中所示，於背支柱27之前面之中在上下大致中間高度位置係突設有側視向上鉤狀之下部卡合爪81。另一方面，如於圖9(A)中所示，在下部背殼板9的裏面係形成自上方嵌入下部卡合爪81之向上開口之袋狀之下部支承部82。因此，下部背殼板9亦前後不能背離地連結於背支柱27。下部背殼板9與背支柱27雖亦可用小螺絲鎖緊連結，惟當如本實施形態，採用卡合爪81與支承部82構成之嵌合式卡合手段時，有組裝簡單且同時背支柱27之背面為簡單明瞭的優點。 As shown in FIG. 2(A), a side view-up hook-shaped lower engaging claw 81 is protruded from the front surface of the back stay 27 at a substantially upper intermediate height position. On the other hand, as shown in Fig. 9(A), a bag-shaped lower portion supporting portion 82 which is fitted upwardly from the upper engaging claw 81 is formed in the inner side of the lower back shell 9. Therefore, the lower back shell 9 is also joined to the back pillar 27 without being separated from each other. The lower back shell plate 9 and the back strut 27 can be locked and fastened by small screws. However, when the engaging engagement means formed by the engaging claws 81 and the support portion 82 is used as in the present embodiment, the assembly is simple and the back post is simultaneously provided. The back of the 27 is a simple and clear advantage.

(6).緩衝墊‧表皮材 (6). Cushion ‧ skin material

其次，補足說明緩衝墊11、12及表皮材13。雖然如上述，上部背殼板10與下部背殼板9具有凹凸而嚙合，卻因上下緩衝墊11、12亦成與上下背殼板9、10一致之形狀，因而，此等上下緩衝墊11、12亦具有凹凸而嚙合。又如上述，座殼板8及下部背殼板9藉由下部緩衝墊11一體地被覆蓋。亦即，下部緩衝墊11以跨越開縫15之狀態來前後展開。 Next, the cushions 11, 12 and the skin material 13 will be described. Although the upper back shell 10 and the lower back shell 9 have irregularities and meshes as described above, since the upper and lower cushions 11 and 12 also have the same shape as the upper and lower back shells 9, 10, the upper and lower cushions 11 are provided. 12 also has irregularities and meshes. Further, as described above, the seat panel 8 and the lower back panel 9 are integrally covered by the lower cushion 11. That is, the lower cushion 11 is deployed back and forth in a state of crossing the slit 15.

茲於圖13(C)中顯示表皮材13之粗略展開圖。表皮材13係一體接連構成椅座1之部分之平片部13a與構成靠背2之部分之袋狀部13b。樹脂片製細長緣構件86藉由縫接等固定於平片部13a之前端緣和左右兩端緣及袋狀部13b之下端緣。於緣構件86分散開設有複數個孔87，另一方面，於座殼板8的下面突設有緣構件86之孔87進入之鉤狀卡合爪88。 A rough development of the skin material 13 is shown in Fig. 13(C). The skin material 13 is integrally formed with a flat portion 13a constituting a portion of the seat 1 and a pocket portion 13b constituting a portion of the backrest 2. The resin sheet-made elongated edge member 86 is fixed to the front edge and the left and right end edges of the flat sheet portion 13a and the lower edge of the bag-like portion 13b by sewing or the like. A plurality of holes 87 are dispersed in the edge member 86, and a hook-shaped engaging claw 88 into which the hole 87 of the edge member 86 is inserted is protruded from the lower surface of the seat plate 8.

表皮材13亦係背座一體方式，由於構成座1之部分及構成靠背2之部分於側視中成彎曲，因此，容易發生鬆弛。因此，在位於表皮材13中椅座1與靠背2之連接部處及位於靠背2上部之部位，分別藉由縫接等，來固定拉入用片材89，將此安裝於上部背殼板10。因此，在設置拉入用片材89之處所，於緩衝墊11、12形成切痕。 The skin material 13 is also a back seat integrated type, and since the portion constituting the seat 1 and the portion constituting the backrest 2 are bent in a side view, slack is likely to occur. Therefore, the sheet 89 for drawing is fixed by the seaming or the like at the joint portion between the seat 1 and the backrest 2 and the portion at the upper portion of the backrest 2, respectively, and is attached to the upper back panel. 10. Therefore, in the place where the pull-in sheet 89 is provided, the cushions 11 and 12 form a cut.

如於圖17(B)(C)中所示，於上部背殼板10係形成拉入用片材89自表面側被***之橫長溝90(亦參照圖2(A))，於橫 長溝90設置有卡合爪92，其嵌入設於拉入用片材89之孔91。 As shown in Fig. 17 (B) and (C), the upper back panel 10 is formed with a horizontally long groove 90 into which the drawing sheet 89 is inserted from the front side (see also Fig. 2(A)). The long groove 90 is provided with an engaging claw 92 that is fitted into a hole 91 provided in the sheet 89 for drawing.

如於圖16(B)中所示，於表皮材13，藉由縫接等一體設置嵌入支承座79之環狀樹脂板83。因此，表皮材13正確地被定位。且於圖16(A)中雖未顯示環狀樹脂板83，實際上，環狀樹脂板83及表皮材13夾在支承座79與突面部28之間。 As shown in Fig. 16(B), in the skin material 13, an annular resin plate 83 fitted into the support seat 79 is integrally provided by sewing or the like. Therefore, the skin material 13 is correctly positioned. Further, although the annular resin sheet 83 is not shown in FIG. 16(A), the annular resin sheet 83 and the surface material 13 are actually interposed between the support base 79 and the projection portion 28.

(7).總結 (7). Summary

如由圖6及圖20(A)可容易理解，當就座人憑靠於靠背2時，靠背2係抵抗彈簧21而以支軸19為中心後傾，同時，椅座1係藉連結銷26向後拉伸而後退移動。於此情況下，由於在椅座1之後端與下部背殼板9之前端之間形成開縫15，因此，容許下部背殼板9相對於座殼板8之後端下降移動，藉此，順利地進行靠背2之搖動。特別是由於側鉸鏈部14前端之彎曲點14a遠較座殼板8之後端位於更靠近面前處，因此，毫無困難地進行靠背2的向後傾動。 As can be easily understood from FIG. 6 and FIG. 20(A), when the seated person leans against the backrest 2, the backrest 2 is tilted rearward about the support shaft 19 against the spring 21, and the seat 1 is coupled by the joint pin. 26 is stretched backwards and moved backwards. In this case, since the slit 15 is formed between the rear end of the seat 1 and the front end of the lower back panel 9, the lower back panel 9 is allowed to descend relative to the rear end of the seat panel 8, thereby smoothly The backrest 2 is shaken. In particular, since the bending point 14a at the front end of the side hinge portion 14 is located closer to the front than the rear end of the seat panel 8, the backward tilting of the backrest 2 is performed without difficulty.

且，亦可不設置側肋68於側鉸鏈部14，使側鉸鏈部14全體產生彎曲變形。或者，亦可於側鉸鏈部14中的後半左右形成側肋68，使側鉸鏈部14中的前半左右產生撓曲變形。亦即，側鉸鏈部14變形之範圍(前後長度)可任意設定。 Further, the side ribs 68 may not be provided to the side hinge portions 14, and the entire side hinge portions 14 may be bent and deformed. Alternatively, the side ribs 68 may be formed on the right and left sides of the side hinge portion 14, and the first half of the side hinge portions 14 may be flexibly deformed. That is, the range in which the side hinge portion 14 is deformed (the length of the front and rear) can be arbitrarily set.

於本實施形態中，雖然屬於軌道構件20與背架7之連結部之連結銷26係位於自支軸19之軸心向正上方延伸之中心線O之稍微面前，惟設定成在搖動之際，連結銷26移動至 夾中心線O之前後對稱位置。因此，搖動之際，軌道構件20之後端上下移動之尺寸係被抑至最低限度。其結果，不採取用以容許上下移動於軌道構件20與前後彈簧支座50、61間之特別手段，惟可在軌道構件20與前後彈簧支座50、61間之鬆動範圍內，進行軌道構件20之後退移動。 In the present embodiment, the connecting pin 26 belonging to the connecting portion between the rail member 20 and the back frame 7 is located slightly in front of the center line O extending from the axial center of the support shaft 19, but is set to be rocking. , the joint pin 26 moves to Clamp the centerline O before and after the symmetrical position. Therefore, the size of the rear end of the rail member 20 is reduced to the minimum when rocking. As a result, a special means for allowing up and down movement between the rail member 20 and the front and rear spring supports 50, 61 is not employed, but the rail member can be carried out within the loose range between the rail member 20 and the front and rear spring supports 50, 61. 20 moves back.

亦即，雖然藉由背架7之向後傾動，連結銷26沿上下方向移動，惟由於導銷45之高度位置一定，因此，若假設連結銷26之上下移動尺寸為大時，即會因軌道構件20一面大幅地變化姿勢一面後退，而產生須採取使前後彈簧支座50、61亦與軌道構件20一起上下移動之手段之虞，如此，構造即複雜化，惟，於本實施形態中，由於在搖動之際，連結銷26之上下移動尺寸極小，軌道構件20之姿勢變化係藉由該軌道構件20與前後彈簧支座50、61間之間隙來被吸收，因此，構造不會複雜化，可確保搖動功能。 That is, although the connecting pin 26 is moved in the up and down direction by the backward tilting of the back frame 7, since the height position of the guide pin 45 is constant, if the upper and lower moving dimensions of the connecting pin 26 are assumed to be large, the track will be caused by the track. The member 20 is retracted while being largely changed in posture, and the means for moving the front and rear spring holders 50, 61 together with the rail member 20 is required. Thus, the structure is complicated, but in the present embodiment, Since the upper and lower movement dimensions of the coupling pin 26 are extremely small at the time of shaking, the posture change of the rail member 20 is absorbed by the gap between the rail member 20 and the front and rear spring holders 50, 61, so that the structure is not complicated. , to ensure the shaking function.

雖然導銷45係於導孔47之內部滑動，若搖動之際，導銷45碰撞導孔47之後端，即會有時而產生撞擊施加於就座人之身體，時而發生碰撞聲音而帶來不愉快的感覺之虞。另一方面，雖然引用圖9(C)(D)來說明，設置彈性支持體38於底座6之背支持部18，設定成與軸承架23之限制片23a接觸，惟設定成在導銷45已完成後退之前，限制片23a接觸彈性支持體38，而停止搖動。因此，可防止撞擊及撞擊聲音的產生。 Although the guide pin 45 slides inside the guide hole 47, if the guide pin 45 collides with the rear end of the guide hole 47 when shaking, there is a time when an impact is applied to the body of the seated person, and sometimes a collision sound occurs. Come to the unpleasant feeling. On the other hand, although the description is made with reference to FIG. 9(C)(D), the elastic support body 38 is provided on the back support portion 18 of the base 6, and is set to be in contact with the restriction piece 23a of the bearing frame 23, but is set to be in the guide pin 45. Before the retreat has been completed, the restriction piece 23a contacts the elastic support body 38, and the shaking is stopped. Therefore, the occurrence of impact and impact sound can be prevented.

雖然緩衝墊係亦可於座殼板8與下部背殼板9間分離，惟，於此情況下，有在使用椅子期間上下背殼板9、10之交界發生厚度方向之偏差(高低差)，外觀變為不佳之虞。對此，由於在本實施形態中，下部緩衝墊11係形成跨座殼板8及下部背殼板9之狀態，因此，即使持續使用，仍不會於椅座1與靠背2之交界部發生高低差，而品質優異。 Although the cushion can be separated between the seat panel 8 and the lower back panel 9, in this case, there is a deviation in the thickness direction (height difference) between the upper and lower back panels 9, 10 during use of the chair. The appearance becomes poor. On the other hand, in the present embodiment, the lower cushion 11 is in a state of forming the straddle shell 8 and the lower back panel 9, so that even if it is continuously used, it does not occur at the boundary between the seat 1 and the backrest 2. High and low, and excellent quality.

當上部背殼板10與下部背殼板9具有凹凸而疊合時，因上下背殼板10、9於經變化高度之位置被連結，而有可提高連結強度之優點。於此情況下，雖然在連結上下背殼板10、9中，若使卡合突起等數目為多時，即可提高連結強度，惟若為各卡合突起一齊嵌入下部背殼板9之構造，即會有難以定位的情形。對此，如參照圖15(A)所說明，設定成E1<E2<E3之關係，惟由於當嵌入左右二側卡合突起73時，其他之突起74、75則自動定位，因此，容易進行連結作業。 When the upper back shell sheet 10 and the lower back shell sheet 9 have irregularities and overlap, since the upper and lower back shell sheets 10 and 9 are joined at positions of varying heights, there is an advantage that the joint strength can be improved. In this case, in the case of connecting the upper and lower back shell sheets 10 and 9, when the number of the engaging projections or the like is large, the joint strength can be improved, but the structure in which the respective engaging projections are fitted into the lower back shell 9 together can be obtained. That will be difficult to locate. On the other hand, as described with reference to FIG. 15(A), the relationship of E1 < E2 < E3 is set, but when the left and right two-side engagement projections 73 are fitted, the other projections 74 and 75 are automatically positioned, which makes it easy to perform. Link the job.

又，於本實施形態中，由於下部背殼板9係藉由下部卡合爪81與下部支承部82之嵌合，連結於背支柱27，因此安裝強度高。又由於座殼板係為藉由自上方推入而安裝於軌道構件20者，因此，可大幅提高椅子組裝之生產效率。 Further, in the present embodiment, since the lower back shell 9 is fitted to the back support portion 27 by the fitting of the lower engagement claw 81 and the lower support portion 82, the attachment strength is high. Further, since the seat panel is attached to the rail member 20 by being pushed in from above, the production efficiency of the chair assembly can be greatly improved.

其次，緩衝墊係雖然亦可於座殼板8與下部背殼板9間分離，惟，於此情況下，有在使用椅子期間上下背殼板9、10之交界發生厚度方向之偏差(高低差)，外觀變為不佳之虞。對此，由於在本實施形態中，下部緩衝墊11係形成跨座殼 板8及下部背殼板9之狀態，因此，即使持續使用，仍不會於椅座1與靠背2之交界部發生高低差，而品質優異。 Secondly, although the cushion can be separated between the seat panel 8 and the lower back panel 9, in this case, there is a variation in the thickness direction at the boundary between the upper and lower back panels 9, 10 during use of the chair (high and low Poor), the appearance becomes poor. In this regard, in the present embodiment, the lower cushion 11 is formed as a straddle housing. Since the plate 8 and the lower back cover 9 are in a state, even if they are continuously used, there is no difference in height between the seat 1 and the backrest 2, and the quality is excellent.

由於緩衝墊11、12係***成形於殼板8、9、10，因此，補強板31係預先安裝於上部背殼板10。於此情況下，如圖19明示，補強板31係藉由設於上部背殼板10之突起94與設於補強板31之孔95之嵌合，而正確地被定位。又，如參照圖11(B)所說明，由於在表皮材13上係一體設置有嵌入上部背殼板10之支承座79之環狀樹脂板83，因此，表皮材13之後部係正確地被定位於上部背殼板10。當上部背殼板10與下部背殼板9具有凹凸而疊合時，因上下背殼板10、9係於經變化高度之位置被連結，而有可提高連結強度之優點。 Since the cushions 11 and 12 are inserted and formed in the shell plates 8, 9, and 10, the reinforcing plates 31 are attached to the upper back shell sheet 10 in advance. In this case, as shown in Fig. 19, the reinforcing plate 31 is correctly positioned by the fitting of the projection 94 provided on the upper back shell 10 and the hole 95 provided in the reinforcing plate 31. Further, as described with reference to Fig. 11(B), since the annular resin sheet 83 in which the support seat 79 of the upper back shell 10 is fitted is integrally provided on the surface material 13, the rear portion of the surface material 13 is correctly Located in the upper back shell plate 10. When the upper back shell sheet 10 and the lower back shell sheet 9 have irregularities and overlap, since the upper and lower back shell sheets 10 and 9 are joined at positions of varying heights, there is an advantage that the joint strength can be improved.

其次。如於圖17(A)中箭頭A所示，藉由拉入用片材89之拉伸，張力亦施加於下部緩衝墊11。於此情況下，如於圖17(A)中一點鏈線94所示，當上下緩衝墊11、12之交界面形成一直線狀時，因拉入用片材89之拉伸，下部緩衝墊11之左右端部發生向下被拉的現象，與表皮材13間空出間隙，因此，有於表皮材13上發生皺紋，又發生凹陷之情況。 Second. As shown by the arrow A in Fig. 17(A), the tension is also applied to the lower cushion 11 by the drawing of the pull-in sheet 89. In this case, as shown by the one-dot chain line 94 in Fig. 17(A), when the interface between the upper and lower cushions 11, 12 is formed in a straight line shape, the lower cushion 11 is pulled by the drawing sheet 89. The left and right end portions are pulled downward, and a gap is formed between the left and right end portions. Therefore, wrinkles are formed on the surface material 13, and a depression occurs.

就此點而言，如實施形態，當下部緩衝墊之左右側部向上突出時，即使因拉入用片材89之拉伸，張力亦作用於下部緩衝墊11中之下部背緩衝墊11a之左右側部11a’，於下部背緩衝墊11a之左右側部11a’，左右側部仍不易變形，因 此，不會發生可辨識程度之變形，因此，外觀為佳。且，雖然在拉入用片材89之周圍處表皮材13因被強拉而容易起皺，此皺紋之產生係可藉由貼上聚氨酯膠帶於拉入用片材89之周圍處來消除(不易變形，可抑制表皮材13的屈從變形)。 In this regard, as in the embodiment, when the left and right side portions of the lower cushion protrude upward, the tension acts on the lower back cushion 11a of the lower cushion 11 even by the stretching of the pull-in sheet 89. The side portions 11a' are not easily deformed on the left and right side portions 11a' of the lower back cushion 11a, because Therefore, deformation of the identifiable degree does not occur, and therefore, the appearance is good. Further, although the skin material 13 is easily wrinkled by being strongly pulled around the sheet 89 for drawing, the generation of the wrinkles can be eliminated by attaching a polyurethane tape to the periphery of the sheet 89 for drawing ( It is not easily deformed, and the deformation of the surface material 13 can be suppressed.

(8).其他 (8). Other

本申請案之發明亦可在上述實施形態以外，成各式各樣具體化。例如，座殼板與背殼板亦可使全體成為一體構造，相反地，亦可將座殼板分割成上下三個以上的構件。又，本申請案之發明亦可適用於搖動之際椅座不會後退的類型、搖動之際椅座一面後退一面後傾的類型。 The invention of the present application can be embodied in various forms in addition to the above-described embodiments. For example, the seat shell plate and the back shell plate may have an integral structure as a whole, and conversely, the seat shell plate may be divided into three or more members. Further, the invention of the present application can also be applied to a type in which the seat does not recede when rocking, and a type in which the seat is receded and tilted backward while rocking.

可將底座、背架等變更成種種形狀。作為將殼板分成複數個之情形之連結手段係不限於如實施形態，突起與袋部(嵌合孔)之組合，亦可例如使用嵌入雙方之連結棒、連結板。在採用突起與袋部(嵌合孔)之組合情況下，其位置關係可任意設定(亦可於個別零件形成突起與袋部)。 The base, the back frame, and the like can be changed into various shapes. The connecting means for dividing the shell plate into a plurality of pieces is not limited to the embodiment, and the combination of the protrusion and the bag portion (fitting hole) may be, for example, a connecting rod or a connecting plate in which both sides are fitted. In the case where a combination of a projection and a pocket portion (fitting hole) is employed, the positional relationship can be arbitrarily set (it is also possible to form a projection and a pocket portion in an individual part).

如於圖20(B)(C)中所示，當作為鉸鏈手段係亦可替代側鉸鏈部或添加上，採用向下大幅地突出之跨接部14’。跨接部14’係由於向下大幅地突出，因此下部背殼板9係可遍及全體，相對於座殼板8之後端大幅地沉入。 As shown in Fig. 20 (B) (C), when the side hinge portion can be replaced or added as a hinge means, the bridging portion 14' which is largely protruded downward is employed. Since the bridging portion 14' is largely protruded downward, the lower back shell plate 9 can be spread over the entire end with respect to the rear end of the seat shell panel 8.

(產業上之可利用性) (industrial availability)

本申請案之發明之實施品係可實際被製造。因此，可供產 業上來利用。 The embodiments of the invention of the present application can be actually manufactured. Therefore, available for production Industry to use.

1‧‧‧椅座 1‧‧‧ seat

2‧‧‧靠背 2‧‧‧ Backrest

3‧‧‧身體承受部 3‧‧‧ body support department

4‧‧‧腳支柱 4‧‧‧ foot pillar

5‧‧‧腳裝置 5‧‧‧ foot device

6‧‧‧底座 6‧‧‧Base

6a‧‧‧構成底座之本體部之後構件 6a‧‧‧ Components that form the body of the base

6b‧‧‧左右側構件 6b‧‧‧ left and right side members

6c‧‧‧前構件 6c‧‧‧front components

6d‧‧‧底座蓋 6d‧‧‧ base cover

7‧‧‧背架 7‧‧‧back frame

8‧‧‧座殼板 8‧‧‧Shell plate

9‧‧‧下部背殼板 9‧‧‧Lower back shell

10‧‧‧上部背殼板 10‧‧‧Upper back shell

11‧‧‧下部緩衝墊 11‧‧‧Lower cushion

11a‧‧‧下部背緩衝墊 11a‧‧‧ lower back cushion

11a’‧‧‧左右側部 11a’‧‧‧ left and right side

12‧‧‧上部背緩衝墊 12‧‧‧Upper back cushion

13‧‧‧表皮材 13‧‧‧Table material

13a‧‧‧平片部 13a‧‧‧Piece Department

13b‧‧‧袋狀部 13b‧‧‧ bag

14‧‧‧側鉸鏈部 14‧‧‧ Side hinges

14’‧‧‧跨接部 14’‧‧‧ bridging department

14a‧‧‧側鉸鏈部之彎曲點 14a‧‧‧Bending point of the side hinge

15‧‧‧開縫 15‧‧‧ slitting

18‧‧‧底座之背支持部(向後突出部) 18‧‧‧Back support of the base (backward projection)

18a‧‧‧軸承架 18a‧‧‧Bearing frame

20‧‧‧軌道構件 20‧‧‧ Track members

20a‧‧‧側板 20a‧‧‧ side panels

21‧‧‧彈簧 21‧‧‧ Spring

22‧‧‧基部 22‧‧‧ base

22a‧‧‧側板 22a‧‧‧ side panels

23‧‧‧軸承架 23‧‧‧ bearing frame

23a‧‧‧限制片 23a‧‧‧Limited

23b‧‧‧側板 23b‧‧‧ side panels

23c‧‧‧收粉片 23c‧‧‧Powder

24‧‧‧左右軸承部 24‧‧‧About the bearing department

25‧‧‧軸承肋 25‧‧‧ bearing ribs

26‧‧‧連結銷 26‧‧‧Links

27‧‧‧背支柱 27‧‧‧ Back pillar

28‧‧‧突面部 28‧‧‧Face

29‧‧‧螺絲(小螺絲) 29‧‧‧ screws (small screws)

30‧‧‧凹處 30‧‧‧ recess

31‧‧‧補強板 31‧‧‧ reinforcing plate

31a‧‧‧傾斜部 31a‧‧‧ inclined section

31b‧‧‧端部 31b‧‧‧End

32‧‧‧凸出成形部 32‧‧‧Protruding forming department

33‧‧‧肘本體 33‧‧‧ elbow body

34‧‧‧肘蓋 34‧‧‧ elbow cover

34a‧‧‧後壁 34a‧‧‧Back wall

36‧‧‧凹處 36‧‧‧ recess

37‧‧‧小螺絲 37‧‧‧Small screws

38‧‧‧彈性支持體 38‧‧‧elastic support

39‧‧‧軸襯 39‧‧‧ Bushing

40‧‧‧軸襯 40‧‧‧ Bushing

41‧‧‧向下限制肋 41‧‧‧ downward restraining ribs

42‧‧‧定位肋 42‧‧‧ positioning ribs

43‧‧‧止動片 43‧‧‧stop film

44‧‧‧卡合爪 44‧‧‧Card claws

45‧‧‧導銷 45‧‧‧Marketing

46‧‧‧導引體 46‧‧‧Guide

46a‧‧‧突起 46a‧‧‧ Protrusion

46b‧‧‧定位孔 46b‧‧‧Positioning holes

47‧‧‧導孔 47‧‧‧ Guide hole

48‧‧‧突面體 48‧‧‧Face

49‧‧‧孔 49‧‧‧ hole

50‧‧‧前部彈簧支座 50‧‧‧Front spring support

50a‧‧‧彎曲面 50a‧‧‧Curved surface

51‧‧‧堤岸部 51‧‧‧ Embankment

52‧‧‧前突起 52‧‧‧Pre-protrusion

53‧‧‧傾斜面 53‧‧‧Sloping surface

54‧‧‧前卡合溝 54‧‧‧Pre-engagement

55‧‧‧傾斜面 55‧‧‧Sloping surface

56‧‧‧切開部 56‧‧‧cutting department

56a‧‧‧前端緣 56a‧‧‧ front edge

57‧‧‧葉片 57‧‧‧ blades

58‧‧‧導溝 58‧‧‧Guide

61‧‧‧後部彈簧支承 61‧‧‧ Rear spring support

61a‧‧‧凸緣片 61a‧‧‧Flange piece

62‧‧‧支持突起 62‧‧‧Support protrusion

63‧‧‧昇降操作槓桿 63‧‧‧ Lifting operation lever

64‧‧‧輔助軸承 64‧‧‧Auxiliary bearing

65‧‧‧軸襯 65‧‧‧ Bushing

66‧‧‧止動片 66‧‧‧stop film

68‧‧‧側肋 68‧‧‧ Side ribs

69‧‧‧補強肋 69‧‧‧ reinforcing ribs

70‧‧‧窗孔 70‧‧‧ window hole

71、72‧‧‧疊合部肋板 71,72‧‧‧Folding ribs

71a‧‧‧凸部 71a‧‧‧ convex

71b‧‧‧外側面 71b‧‧‧Outside

72a‧‧‧凹部 72a‧‧‧ recess

72b‧‧‧內側面 72b‧‧‧ inside

72c‧‧‧底面 72c‧‧‧ bottom

73‧‧‧中央卡合突起 73‧‧‧Central snap protrusion

73a‧‧‧卡合爪 73a‧‧‧Card claws

74‧‧‧側卡合突起 74‧‧‧ Side engagement protrusion

74a‧‧‧卡合爪 74a‧‧‧Card claws

75‧‧‧中間定位突起 75‧‧‧Intermediate positioning protrusion

76‧‧‧中央袋部 76‧‧‧Central Bag Department

76a‧‧‧中央卡合孔 76a‧‧‧Central snap hole

77‧‧‧側袋部 77‧‧‧Side bag department

78‧‧‧中間袋部 78‧‧‧Intermediate bag department

79‧‧‧支承座 79‧‧‧ support

80‧‧‧埋頭鑽孔 80‧‧‧Drilling

81‧‧‧下部卡合爪 81‧‧‧ Lower clamping claw

82‧‧‧下部支承部 82‧‧‧ lower support

83‧‧‧環狀樹脂板 83‧‧‧ annular resin board

86‧‧‧緣構件 86‧‧‧ Marginal components

87‧‧‧孔 87‧‧‧ hole

88‧‧‧卡合爪 88‧‧‧Card claws

89‧‧‧拉入用片材 89‧‧‧ Pulling sheet

90‧‧‧橫長溝 90‧‧‧横长沟

91‧‧‧孔 91‧‧‧ hole

92‧‧‧卡合爪 92‧‧‧Card claws

94‧‧‧突起 94‧‧‧ Protrusion

95‧‧‧孔 95‧‧‧ hole

圖1係顯示與實施形態相關之椅子之外觀之圖式，(A)係前視圖，(B)係側視圖，(C)係俯視圖，(D)係後視圖，(E)係部分立體圖。 Fig. 1 is a view showing the appearance of a chair relating to an embodiment, (A) is a front view, (B) is a side view, (C) is a plan view, (D) is a rear view, and (E) is a partial perspective view.

圖2(A)係全體之分離立體圖，(B)係倒轉底座之狀態之分離立體圖。 Fig. 2(A) is an exploded perspective view of the entire body, and Fig. 2(B) is an exploded perspective view showing the state of the inverted base.

圖3(A)係椅子之主要部分之部分省略立體圖，(B)係緩衝墊之分離立體圖。 Fig. 3(A) is a perspective view of a portion of a main part of the chair, and (B) is a perspective view of the cushion.

圖4係以椅座為中心之部分之側剖面圖。 Figure 4 is a side cross-sectional view of a portion centered on the seat.

圖5係主要顯示緩衝墊之配置關係之剖面圖。 Fig. 5 is a cross-sectional view mainly showing the arrangement relationship of the cushions.

圖6係縱剖側視圖(椅座於軌道構件處被切斷)。 Figure 6 is a longitudinal sectional side view (the seat is cut at the track member).

圖7(A)係圖4之部分放大圖，(B)係顯示軌道構件與背架之連結狀態之剖面圖，(C)係(B)之C-C剖面圖。 Fig. 7(A) is a partial enlarged view of Fig. 4, (B) is a cross-sectional view showing a state in which the rail member and the back frame are coupled, and (C) is a C-C cross-sectional view of the system (B).

圖8(A)係以軌道構件為中心之部分之分離立體圖，(B)係椅座之支持構件之立體圖。 Fig. 8(A) is an exploded perspective view of a portion centered on the rail member, and (B) is a perspective view of the support member of the seat.

圖9(A)係座殼板及下部背殼板之立體圖，(B)係背架之部分立體圖，(C)係底座之部分立體圖，(D)係自(C)之D-D方向所視之組裝狀態之剖面圖。 Figure 9 (A) is a perspective view of the seat shell plate and the lower back shell plate, (B) is a partial perspective view of the back frame, (C) is a partial perspective view of the base, and (D) is viewed from the DD direction of (C) A sectional view of the assembled state.

圖10(A)係圖6之XA-XA剖面圖，(B)係圖6之XB-XB剖面圖。 Fig. 10(A) is a cross-sectional view taken along line XA-XA of Fig. 6, and Fig. 10(B) is a cross-sectional view taken along line XB-XB of Fig. 6.

圖11係圖6之XI-XI剖面圖。 Figure 11 is a cross-sectional view taken along line XI-XI of Figure 6.

圖12係用以顯示軌道構件之安裝順序之分離側視圖。 Figure 12 is a side elevational view showing the mounting sequence of the track members.

圖13(A)係在倒轉座殼板之狀態之分離立體圖，(B)係圖9(D)之XIIIB-XIIIB剖面圖，(C)係在表皮材之展開狀態之概略俯視圖。 Fig. 13(A) is a perspective view showing a state in which the seat pan is inverted, (B) is a cross-sectional view taken along line XIIIB-XIIIB of Fig. 9(D), and (C) is a schematic plan view showing a state in which the skin material is unfolded.

圖14係自後面所視殼板之分離立體圖。 Figure 14 is an exploded perspective view of the shell panel as seen from the back.

圖15(A)係背殼板之分離前視圖，(B)係在連結狀態之(A)之B-B剖面圖，(C)係在連結狀態之(A)之C-C剖面圖，(D)係在連結狀態之(A)之D-D剖面圖。 Fig. 15(A) is a front view of the separation of the back shell, (B) is a BB sectional view of the connected state (A), and (C) is a CC sectional view of the connected state (A), (D) DD cross-sectional view of (A) in the connected state.

圖16(A)係上部背殼板、補強板與背支柱之連結部之剖視圖，(B)係(A)處之上部背殼板之剖面圖。 Fig. 16(A) is a cross-sectional view showing the joint portion of the upper back shell plate, the reinforcing plate and the back pillar, and (B) is a cross-sectional view of the upper back shell plate at the (A).

圖17(A)係顯示殼板與緩衝墊之關係之分離前視圖，(B)係以下部背殼板之下端部為中心之縱剖前視圖，(C)係顯示緣構件之卡止狀態之縱剖面圖。 Fig. 17 (A) is a front view showing the separation of the shell plate and the cushion, (B) is a longitudinal sectional front view centering on the lower end portion of the lower back panel, and (C) is showing the locking state of the edge member. Longitudinal section view.

圖18(A)係上部背殼板與補強板之分離立體圖，(B)係自後方所視上部背殼板之下部之立體圖，(C)係(A)之C-C剖面圖。 Fig. 18(A) is an exploded perspective view of the upper back shell plate and the reinforcing plate, (B) is a perspective view of the lower portion of the upper back shell plate viewed from the rear, and (C) is a C-C cross-sectional view of the system (A).

圖19係上部背殼板與補強板背支柱之分離俯視剖面圖。 Figure 19 is a top plan cross-sectional view of the upper back shell and the reinforcing back pillar.

圖20(A)係用以說明動作之概略剖面圖，(B)係其他實施形態之部分俯視圖，(C)係(B)之C-C剖面圖。 Fig. 20(A) is a schematic cross-sectional view for explaining the operation, (B) is a partial plan view of another embodiment, and (C) is a C-C cross-sectional view of (B).

1‧‧‧椅座 1‧‧‧ seat

2‧‧‧靠背 2‧‧‧ Backrest

3‧‧‧身體承受部 3‧‧‧ body support department

8‧‧‧座殼板 8‧‧‧Shell plate

9‧‧‧下部背殼板 9‧‧‧Lower back shell

10‧‧‧上部背殼板 10‧‧‧Upper back shell

11‧‧‧下部緩衝墊 11‧‧‧Lower cushion

11a‧‧‧下部背緩衝墊 11a‧‧‧ lower back cushion

12‧‧‧上部背緩衝墊 12‧‧‧Upper back cushion

14‧‧‧側鉸鏈部 14‧‧‧ Side hinges

14a‧‧‧側鉸鏈部之彎曲點 14a‧‧‧Bending point of the side hinge

15‧‧‧開縫 15‧‧‧ slitting

30‧‧‧凹處 30‧‧‧ recess

31‧‧‧補強板 31‧‧‧ reinforcing plate

31a‧‧‧傾斜部 31a‧‧‧ inclined section

31b‧‧‧端部 31b‧‧‧End

32‧‧‧凸出成形部 32‧‧‧Protruding forming department

68‧‧‧側肋 68‧‧‧ Side ribs

71、72‧‧‧疊合部肋板 71,72‧‧‧Folding ribs

71a‧‧‧凸部 71a‧‧‧ convex

71b‧‧‧外側面 71b‧‧‧Outside

72a‧‧‧凹部 72a‧‧‧ recess

72b‧‧‧內側面 72b‧‧‧ inside

73‧‧‧中央卡合突起 73‧‧‧Central snap protrusion

74‧‧‧側卡合突起 74‧‧‧ Side engagement protrusion

75‧‧‧中間定位突起 75‧‧‧Intermediate positioning protrusion

76‧‧‧中央袋部 76‧‧‧Central Bag Department

77‧‧‧側袋部 77‧‧‧Side bag department

78‧‧‧中間袋部 78‧‧‧Intermediate bag department

90‧‧‧橫長溝 90‧‧‧横长沟

Claims (11)

一種椅子，係形成椅座與靠背連續之外觀，上述靠背係為安裝於背架(可向後傾動地連結於上述椅座或配置於其下方之底座)之構造，上述椅座係具有於上面鋪設座緩衝墊之樹脂製座殼板，另一方面，上述靠背係具備於前面鋪設背緩衝墊之樹脂製背殼板，上述座殼板與背殼板係利用鉸鏈手段以容許上述背殼板相對於上述座殼板之後端全體地產生下降之方式來連結。 A chair is formed to form a continuous appearance of a seat and a backrest, and the backrest is configured to be attached to a back frame (a base that can be tiltably coupled to the seat or disposed below), and the seat is laid on the seat The resin seat cover plate of the cushion pad, on the other hand, the backrest system is provided with a resin back cover plate on which the back cushion is laid in front, and the seat shell plate and the back shell plate are hinged to allow the back shell plate to be opposite The lower ends of the above-mentioned seat shells are integrally connected in a descending manner. 如申請專利範圍第1項之椅子，其中，上述背殼板係全體成為一體構造，或分割成上下複數個零件而相互連結；另一方面，上述鉸鏈手段係以配置於上述座殼板及背殼板之左右端部之側鉸鏈部所構成，在上述左右側鉸鏈部間之部位，於上述座殼板之後端與背殼板之下端之間空出細長之開縫。 The chair of claim 1, wherein the back cover plate is integrally formed or divided into a plurality of upper and lower parts and connected to each other; and the hinge means is disposed on the seat plate and the back The side hinge portion of the left and right end portions of the shell plate is formed with a slender slit between the rear end portion of the seat shell plate and the lower end portion of the back shell plate at a portion between the left and right side hinge portions. 如申請專利範圍第2項之椅子，其中，於上述座殼板之後端與背殼板之下端之間設置有左右兩端部沿前後方向為長形、且呈全體俯視向前凹入之形態之開縫，因此，上述座殼板之後端與背殼板之下端係經由位於上述開縫之左右外側之上述側鉸鏈部連結成為一體，上述側鉸鏈部之彎曲支點位於較上述座殼板之後端更靠近面前。 The chair of claim 2, wherein between the rear end of the seat shell and the lower end of the back shell, the left and right end portions are elongated in the front-rear direction and are recessed in a plan view. The slit is formed so that the rear end of the seat shell and the lower end of the back shell are integrally joined via the side hinge portion located on the left and right outer sides of the slit, and the bending fulcrum of the side hinge portion is located behind the seat shell The end is closer to the front. 如申請專利範圍第1至3項中任一項之椅子，其中， 上述背架向後傾動自如地連結於配置在上述椅座下方之底座，上述座殼板係以當上述背架向後傾動時被向後拉而後退移動之方式被上述底座所支持著。 A chair as claimed in any one of claims 1 to 3, wherein The back frame is slidably coupled to a base disposed under the seat, and the seat plate is supported by the base such that the back frame is pulled back and moved backward when the back frame is tilted rearward. 如申請專利範圍第4項之椅子，其中，上述底座係具有至少後端緣沿左右方向為長之形態之本體部，以及自上述本體部向後突出之背支持部，於上述本體部，腳支柱被固定，同時，上述椅座可前後移動地被支持著；另一方面，上述背架係具有位於在上述底座中之本體部之後方、沿左右方向為長的基部，將上述背架之基部向後傾動自如地連結於上述底座之背支持部，同時，上述椅座直接或經由中間支持體連結於在上述背架中之基部之左右側部。 The chair of claim 4, wherein the base has a body portion having a shape in which at least a rear end edge is long in a left-right direction, and a back support portion projecting rearward from the body portion, and the foot support is formed on the body portion Being fixed, at the same time, the seat can be supported to move forward and backward; on the other hand, the back frame has a base portion which is located behind the body portion in the base and is long in the left-right direction, and the base of the back frame is The back support portion of the base is detachably attached to the base, and the seat is coupled to the left and right side portions of the base portion of the back frame directly or via an intermediate support. 如申請專利範圍第1至3項中任一項之椅子，其中，上述背殼板係由一體連結於上述座殼板之下部背殼板與重疊配置於其上之上部背殼板所分離構成，此等上部背殼板之下端與下部背殼板之上端相連結，更且，上述上部背殼板與下部背殼板分別安裝於上述背架。 The chair of any one of claims 1 to 3, wherein the back shell plate is separated from the back shell plate integrally coupled to the lower portion of the seat shell plate and the upper shell back panel disposed thereon The lower end of the upper back shell is connected to the upper end of the lower back shell, and the upper back shell and the lower back shell are respectively mounted on the back rack. 如申請專利範圍第6項之椅子，其中，下部背緩衝墊鋪設在上述下部背殼板之前面，與上述下部背緩衝墊分離之上部背緩衝墊鋪設於上部背殼板之前面，上述座緩衝墊與下部背緩衝墊係為一體接連，且上述座緩衝墊與下部背緩衝墊係以一體接連之表皮材所覆蓋。 The chair of claim 6, wherein the lower back cushion is laid on the front surface of the lower back shell, and the upper back cushion is separated from the upper back cushion and laid on the front surface of the upper back shell. The pad and the lower back cushion are integrally connected, and the seat cushion and the lower back cushion are covered by the integrally connected skin material. 如申請專利範圍第7項之椅子，其中， 上述座緩衝墊與下部背緩衝墊係藉由***成形安裝於上述座殼板與下部背殼板，上述座緩衝墊與下部背緩衝墊相互連結之部分係自上述座殼板與下部背殼板間之開縫延展至裏側。 Such as the chair of claim 7 of the patent scope, wherein The seat cushion and the lower back cushion are mounted on the seat shell plate and the lower back shell plate by insert molding, and the portion of the seat cushion pad and the lower back cushion pad are connected to each other from the seat shell plate and the lower back shell plate The slit between the two extends to the inside. 如申請專利範圍第7項之椅子，其中，上述下部背殼板與下部背緩衝墊以及上部背殼板與上部背緩衝墊之疊合部於前視中呈相互嵌合之凹凸形狀。 The chair of claim 7, wherein the lower back shell and the lower back cushion and the overlapping portion of the upper back shell and the upper back cushion are in a concave-convex shape in which they are fitted to each other in a front view. 如申請專利範圍第7項之椅子，其中，上述表皮材係由覆蓋上述座緩衝墊之座被覆部及自上方被覆上述殼板及背緩衝墊之袋狀之背被覆部所構成，兩者係一體連結，使上述座被覆部之前緣及左右側緣及背被覆部之下端緣轉入至上述座殼板之下面，於此窄幅帶狀之緣構件被固定著，並將上述緣構件卡止於座殼板之下面。 The chair of claim 7, wherein the skin material is composed of a seat covering portion covering the seat cushion and a back cover portion covering the shell plate and the back cushion from above, both of which are The integral connection is such that the front edge and the left and right side edges of the seat covering portion and the lower edge of the back cover portion are transferred to the lower surface of the seat shell, and the narrow strip-shaped edge member is fixed, and the edge member is carded Stop below the seat plate. 如申請專利範圍第1或5項之椅子，其中，上述背架係具有位於上述靠背之左右側部之後面之左右背支柱，另一方面，於上述背殼板前面重疊配置補強板，上述補強板、背殼板與左右背支柱藉螺絲一體鎖緊連結。 The chair of claim 1 or 5, wherein the back frame has left and right back pillars located on a rear surface of the left and right side portions of the backrest, and a reinforcing plate is disposed on a front surface of the back shell plate. The plate, the back shell plate and the left and right back pillars are integrally locked by screws.