1358998 開孔351 連接件41 後端部412 鎖固裝置60 鎖固孔62 外型體64 彈性緩衝機構40 前端部411 彈性件42 鎖固面61 鎖固件63 八 i本化學式時，請揭示最能顯示發明特徵化 學式：（無）1358998 Opening 351 Connector 41 Rear end portion 412 Locking device 60 Locking hole 62 External body 64 Elastic cushioning mechanism 40 Front end portion 411 Elastic member 42 Locking surface 61 Locking member 63 When this formula is used, please reveal the best Display the characteristic chemical formula of the invention: (none)
九、發明說明： 【發明所屬之技術領域】 ，發明係有關一種辦公椅頭枕組，尤指一 架；間；置一彈性緩衝機構以使頭枕具有彈= =果，當坐者頭部i然枕靠在頭枕面或當坐者由坐姿^ 篗成斜躺或平躺姿狀態時，可緩衝坐者頭所受 自動調整頭枕面之正向位置，以提昇頭枕Nine, the invention description: [Technical field of the invention], the invention relates to an office chair headrest group, especially one; between; an elastic buffer mechanism to make the headrest have a bullet = = fruit, when the seater's head i The pillow rests on the headrest face or when the seater is in a reclining or lying position by sitting posture ^, it can buffer the positive position of the headrest face automatically adjusted by the seat head to lift the headrest
【先前技術】 一立參考圖1所示，其係習知一具有頭枕之辦公椅立體 示意圖。一辦公椅1所使用之頭枕組1〇一般包含一頭枕 11及一支架12，該支架12之上端與頭枕11之背面或底面 相連結’其下端則鎖固在椅背13之背面14之近上緣處， 使頭枕組10可女裝在椅背13上適位處供坐者頭部可枕靠 在頭枕面111上。而就目前市面上辦公椅使用之頭枕組 而言，該頭枕組10之功能性設計相當有限，大部分偈限 在外觀形狀之人體工學設計或頭枕之高低調整功能， 如：頭枕之外層以軟質墊體如泡棉體等作成以增加坐者 頭部枕靠在頭枕11上之舒適性，或將頭枕11之頭枕面 3 1358998 111設計為中央内凹弧面以使坐者頭部可穩定枕靠而 免向兩側滑落；或將頭枕組10之頭枕u及支架12 # 計以使頭枕11具有高低調整功能供可隨坐者二= 合不时材）而調整頭枕之高低位置。然、以頭枕组⑴ 之使用情況而論，頭枕U之緩衝效果及頭枕u相對於[Prior Art] As shown in Fig. 1, a stereoscopic schematic view of an office chair having a headrest is known. The headrest group 1 used in an office chair 1 generally includes a headrest 11 and a bracket 12, the upper end of which is coupled to the back or bottom surface of the headrest 11 and the lower end of which is locked to the back of the seat back 13 14 Near the upper edge, the headrest group 10 can be worn on the seat back 13 for the seater's head to rest on the headrest face 111. As for the headrest group used in the office chair currently on the market, the functional design of the headrest group 10 is rather limited, and most of them are limited to the ergonomic design of the appearance shape or the height adjustment function of the headrest, such as: The outer layer of the pillow is made of a soft cushion body such as a foam body to increase the comfort of the seat head pillow against the headrest 11, or the head pillow face 3 1358998 111 of the headrest 11 is designed as a central concave curved surface. The head of the occupant can be stabilized against the two sides and can be prevented from slipping to the sides; or the headrest of the headrest group 10 and the bracket 12 can be used to make the headrest 11 have the height adjustment function for the occupant 2 = ) adjust the height of the headrest. However, in terms of the use of the headrest group (1), the cushioning effect of the headrest U and the headrest u are relative to
Dim也相當重要，此兩項因素影響頭枕J 用之舒適度甚巨，上述之正向係指坐者頭部枕靠在頭枕 面111上時之作用力方向，也就是頭枕面的垂直 向’因此該正向位置係指頭枕面U1相對於 向距離或頭枕面與椅背13之間的正向距離者但 習知頭枕組10之功能性設計顯然無法滿足或達成上述兩 項關鍵^因素之舒適度要求。當使用者坐下後其頭部向 後要枕靠在頭枕11上時，坐者頭部與頭枕u之間常容易 產生一撞擊作用（如一般坐者常習慣性貿然向後枕靠在 頭枕11上），致頭枕之反作用力相對容易造成坐者頭部 的損傷或不舒服感，雖然頭枕外層設有軟質墊體，但A 緩衝效果並不足；又當坐者頭部枕靠在頭枕^上，坐者 頭部會對頭枕11產生一作用力（受壓力），頭枕u相對 也對坐者頭部產生一反作用力（反壓力）而壓迫頭部， 而該作用力或反作用力之大小因人而異，如男女體型有 別’各人之肩頸部至頭部之弧線也有所不同，且各人頭 部大小及形狀也有不同，因此頭枕U讓人最感覺舒服的 正向位置（參考前述說明）也因人而異；又在坐姿狀態 時，該頭枕11之反作用力（反壓力）不會太大，但當^ 者由坐姿改變成斜躺或平躺姿態時（即椅背13向後調整 仰度），依力學分析結果該反作用力（反壓力）會隨著 ，背13仰躺角度加大（以坐姿時椅背13之角度當作〇計 f)而相對變大（即坐者頭部之重力枕靠在頭枕U上的 分力會逐漸變大），此時頭枕11讓坐者最感覺舒服的正 4 ^358998 向位置也會相對改變；然而習知頭枕組1〇在安裝後， 頭枕11之正向位置即相對固定，無法因應不同坐者之身 ϊ 頸部至頭部之弧線及頭部大小形狀）而改 ^她也無法隨坐者由坐姿改為斜躺或平躺姿態而改 使頭枕達成最佳舒適度之使用要求；當坐者 當正向位置之頭枕面上時，頭枕11所產生的 乍用力吊會壓迫頭部而造成不舒服感，甚至影 神經而造成頸部酸痛。由上所知，習知頭枕u ^ 1 法對頭枕11之反作用力產生有效之緩衝： 向位置，尤其在仰躺姿態時不舒服感或酸 痛感將更加明顯，大大影響該頭枕组1 ，是習知辦公椅頭枕組10之=二°==解 作用力造成頭部不舒服感的問 Ρ係針對習知辦公椅頭枕結構的缺點而設計者。 【發明内容】 辦八要目的乃在於提供一種具彈性緩衝效果之 7 A椅頭枕組，包含一支架及一頭枕，該支架 ΪΓί椅背之背面近上緣處，支架向上延伸並使其上端 背之前方以連結支撐在頭枕之背面板上，、使S 2之ft面位於椅背之上緣上方適位處供坐者頭部枕 媳i頭枕之背面板與支架之上端部之間設置-可萚5構，該彈性緩衝機構係利用彈性件構成，供 I稭，性件之變形以吸收或緩衝頭枕面之受壓力；其/、 頭部貿然:枕靠在頭枕面時或椅背由坐姿改變 平躺狀態致坐者頭部枕靠在頭枕面之受 面：反;乍用衝機構之緩衝功能以緩衝頭枕 動㈣m2 (反壓力），並可配合受壓力的大小而自 00員枕面之正向位置，藉以增進頭枕之緩衝效果， 5 1358998 ϊ 並提昇頭枕在坐姿、斜躺或平躺姿態下使用之舒適度。 【實施方式】 為使本發明更加明確詳實，茲舉一較佳實施例並配 合下列圖示，將本發明之結構及其技術特徵詳述如後： ， 參考圖2、3、4所示，其分別係本發明具彈性緩 衝，果之辦公椅頭枕組一實施例之立體示意圓、立體分 解示意圖及動作狀態側面示意圖。本發明具彈性緩衝效 ，之辦公椅頭枕組2係安裝在椅背13上適位處供坐者頭 部枕靠，主要包含一頭枕2〇、一支架30及一彈^緩衝機 構40，其中，該頭枕2〇可設計為一殼體結構，由一頭枕 面21及一背面板22組成；該背面板22之内面約_央位置 處設有一室間23，該室間23中設有一橫向槽形座％及一 穿孔26，並利用一相配合之外蓋25鎖固在室間23外部， 使該，形座24上可活動嵌設一連接件41之前端部411 , 並使該連接件41之後端部412由穿孔26向後伸出，藉以 巧頭枕20可相對於連接件4〇之後端部412在一縱向角度 範圍内活動樞轉，也就是當連接件4〇之後端部412固定 日，，該頭枕20可縱向在一角度範圍内活動樞轉如圖4之 ^頭Β所示，以配合不同坐者之頭部枕靠其上如圖4之 箭頭B’所示，使頭枕2〇可符合人體工學設計。 該支架30係一縱向長條形管狀體或桿體，形狀不 拘，其上端部31係向前連結支撐頭枕2〇，該上端部31設 有土間°卩311 ，该空間部311之截面形狀與連接件41 之後端部412之一段截面形狀對應配合，如本實施例該 工間邛311之截面形狀為三角形，使連接件々I之後端部 m活？ί設在上端部31之空間部311内並穩定前後 向;月動，支架30之下端部32末端係鎖固在椅背13之背面 ’本實施例係利用一鎖固塊60先鎖固在椅 旁13之是面14上，該鎖固塊6〇 一侧（面向椅背13之背面 6 Ξ 61上設有複數個鎖固孔62供可藉鎖固件63 /'、，糸穿過以將鎖固塊60鎖固在椅背13之背面14 側之之：=i2可配合套設在鎖固塊60另-^ _ ，64上，並可藉由一固定螺絲322穿過下端部 科_ a 位孔321以將下端部32與鎖固塊60鎖固成一 = 就疋使支架30藉該鎖固塊6〇而鎖固在椅背13之背 該^性緩衝機構40係設置在頭枕20與支架30之上端 二夕^ *係利用一•或以上之彈性件構&，該彈性 不限制如可為彈簧、彈片或其它具有藉變形以 j =弹力之物件，供可藉彈性件之變形以吸收或緩衝頭 受坐者頭部枕靠之作用力；本實施例之彈性緩衝機 主要包含一連接件41及一彈性件42，其中，該彈性 ^42係一線圈式壓縮彈箐，套設在支架30之上端部31之 空間部3U内且其末端421定位住以形成一停止端；該 連接件41係以其前端部411活動嵌設在頭枕20内部之槽 形座24内，而其後端部412由穿孔26向後伸出並活動套 入支架30之上端部31之空間部311内，並使連接件“之 後端部412可抵靠在彈性件42之頭端422上且不會由空 間部311脫出如圖4所示，其中，藉該空間部311之截 面形狀與連接件後端部412之一段截面形狀之間的對應 配合，使連接件41之後端部412可在空間部311内穩定 前後向滑動。當頭枕20受到坐者頭部枕靠之作用力時， 頭枕20會壓迫連接件41向後以同步壓迫彈性件42之頭端 422向後，迫使彈性件42彈性壓縮如圖4中箭頭a所示 而產生緩衝效果；當頭枕20之受壓作用力消失時，該彈 性件42又可回復原狀以使頭枕2〇也回復原來位置。藉 此，當坐者坐上座椅後其頭部貿然向後枕靠在頭枕2〇時 如圖6所示，此時坐者頭部與頭枕2〇之間容易產生一撞 1358998 用二if坐者將椅背13由坐姿調整成斜躺狀態如圖 仰並圖未示），坐者頭部也隨著椅背後 具吝斗枕〇上此時坐者頭部與頭枕20之間也容 r少二ΐ擊Ϊ用’且頭部枕靠在頭枕20上的作用力 力在頭枕20上的分力）也隨著椅背u斜 (以坐姿時近垂直狀之椅背13角度當〇計 41鐘,’〒可藉由該彈性緩衝機構40之連接件 、 產生壓縮效果，使頭枕20與支架30之間產Dim is also very important. These two factors affect the comfort of the headrest J. The positive direction refers to the direction of the force when the seater's headrest rests on the headrest surface 111, that is, the headrest surface. The vertical direction 'thus the forward position is the relative distance between the headrest face U1 relative to the distance or the headrest face and the seat back 13, but the functional design of the known headrest set 10 clearly fails to meet or achieve the above two The comfort factor of the key factor. When the user sits down and the head rests backwards on the headrest 11, the impact between the head of the person and the headrest u is often easy to occur (for example, the average person often habitually leans back to the head) Pillow 11), the reaction force of the headrest is relatively easy to cause damage or discomfort of the head of the person. Although the outer layer of the headrest is provided with a soft cushion body, the A cushioning effect is insufficient; On the headrest ^, the head of the occupant exerts a force (pressure) on the headrest 11, and the headrest u also exerts a reaction force (back pressure) on the head of the occupant to press the head, and the force is pressed. Or the magnitude of the reaction force varies from person to person, such as the size of men and women. The curves of the neck and head of each person are different, and the size and shape of each head are different. Therefore, the headrest U makes people feel the most. The comfortable positive position (refer to the foregoing description) also varies from person to person; in the sitting position, the reaction force (reverse pressure) of the headrest 11 is not too large, but when the person is changed from sitting to reclining or flat When lying down (ie, the back of the chair 13 is adjusted backwards), according to the results of mechanical analysis The reaction force (reverse pressure) will be relatively larger as the back 13 reclining angle is increased (in the sitting position of the seat back 13 as a squat f) (ie, the gravity head of the occupant's head rests on the headrest U The force component on the upper part will gradually become larger. At this time, the headrest 11 will make the seater feel the most comfortable 4 ^ 358998 position will also change relatively; however, the conventional headrest group 1 〇 after installation, the headrest 11 is positive The position is relatively fixed, and it is not possible to change the shape of the neck to the arc of the head and the shape of the head according to the body of the different person. The pillow achieves the best comfort requirement; when the seater is in the head position of the head position, the force generated by the headrest 11 will force the head to cause discomfort, and even the nerves cause the neck. Sore. As can be seen from the above, the conventional headrest u ^ 1 method effectively buffers the reaction force of the headrest 11: the discomfort or soreness is more obvious to the position, especially in the reclining posture, which greatly affects the headrest group 1 It is the designer of the office chair headrest group 10 = two ° = = solution to the head discomfort caused by the shortcomings of the conventional office chair headrest structure. SUMMARY OF THE INVENTION The purpose of the eighth is to provide a 7 A headrest pillow set with elastic cushioning effect, comprising a bracket and a headrest, the bracket is located at the upper edge of the back of the chair back, the bracket extends upward and the upper end thereof The front side of the back is supported on the back panel of the headrest, so that the ft surface of the S 2 is located above the upper edge of the back of the seat for the back panel of the headrest of the seat and the upper end of the bracket. Between the two, the elastic buffer mechanism is constructed by an elastic member for the deformation of the straw to absorb or cushion the pressure of the headrest surface; and// the head is rash: the pillow rests on the headrest surface When the seat back or the seat back is changed from the sitting position, the headrest of the seater is placed on the headrest surface of the headrest: reverse; the cushioning function of the punching mechanism is used to cushion the headrest movement (4) m2 (reverse pressure), and can be combined with the pressure The size of the occupant's pillow is used to enhance the cushioning effect of the headrest, 5 1358998 ϊ and enhance the comfort of the headrest in sitting, reclining or lying posture. [Embodiment] In order to make the present invention more clear and detailed, the structure and technical features of the present invention are described in detail below with reference to the following drawings: Referring to Figures 2, 3, and 4, They are respectively a flexible buffer of the present invention, a three-dimensional schematic circle of the embodiment of the office chair headrest group, a schematic exploded view and a side view of the action state. The utility model has the elastic buffering effect, and the office chair headrest group 2 is installed on the seat back 13 at a suitable position for the seater's head pillow, and mainly comprises a headrest 2〇, a bracket 30 and a bombing mechanism 40. The headrest 2 can be designed as a shell structure, and is composed of a headrest surface 21 and a back panel 22; the inner surface of the back panel 22 is provided with a chamber 23 at a central position, and the chamber 23 is provided There is a transverse trough seat % and a perforation 26, and is locked to the outside of the chamber 23 by a matching outer cover 25, so that the front end portion 411 of the connecting member 41 is movably embedded on the shape seat 24, and The rear end portion 412 of the connecting member 41 projects rearwardly from the through hole 26, whereby the headrest 20 can be pivotally moved relative to the rear end portion 412 of the connecting member 4, within a longitudinal angle range, that is, when the connecting member 4 is rearward. The portion 412 is fixed for a day, and the headrest 20 can be pivoted in a longitudinal direction within a range of angles as shown in FIG. 4 to match the headrest of different occupants on the headrest of FIG. It shows that the headrest 2〇 can be ergonomically designed. The bracket 30 is a longitudinally elongated tubular body or a rod body, and has an outer shape. The upper end portion 31 is coupled to the front head support 2〇, and the upper end portion 31 is provided with a soil 卩311, and the cross-sectional shape of the space portion 311. Corresponding to the cross-sectional shape of one end portion 412 of the connecting member 41, as in the embodiment, the cross-sectional shape of the workpiece 311 is triangular, so that the end portion m after the connecting member 活I is alive. ί is disposed in the space portion 311 of the upper end portion 31 and stabilizes the front and rear direction; the moon movement, the end portion of the lower end portion 32 of the bracket 30 is locked on the back surface of the seat back 13 'This embodiment is first locked by a locking block 60 The side of the chair 13 is on the face 14, and the side of the locking block 6 is provided with a plurality of locking holes 62 for the lockable fastener 63 /' on the back side 6 Ξ 61 facing the back 13 of the seat back 13 The locking block 60 is locked on the back side 14 side of the seat back 13: =i2 can be fitted on the locking block 60---, 64, and can pass through the lower end section by a fixing screw 322 _ a position hole 321 to lock the lower end portion 32 and the locking block 60 to one side. The bracket 30 is locked to the back of the seat back 13 by the locking block 6 该. The cushioning mechanism 40 is disposed at the head. The pillow 20 and the upper end of the bracket 30 are equipped with an elastic member and/or an elastic member. The elasticity is not limited to a spring, a spring piece or the like, and the elastic member can be elasticized. The elastic buffer of the embodiment mainly includes a connecting member 41 and an elastic member 42, wherein the elastic member 42 is deformed to absorb or buffer the force of the head of the head. A coil type compression magazine is sleeved in the space portion 3U of the upper end portion 31 of the bracket 30 and its end 421 is positioned to form a stop end; the connecting member 41 is movably embedded in the headrest 20 with its front end portion 411 The inner trough 24 is inside, and the rear end portion 412 is extended rearwardly by the through hole 26 and is movably fitted into the space portion 311 of the upper end portion 31 of the bracket 30, and the connecting member "the rear end portion 412 can abut against the elasticity. The head end 422 of the member 42 is not disengaged by the space portion 311 as shown in FIG. 4, wherein the cross-sectional shape of the space portion 311 and the corresponding cross-sectional shape of one end portion of the connector rear end portion 412 are such that The rear end portion 412 of the connecting member 41 can stably slide forward and backward in the space portion 311. When the headrest 20 is subjected to the force of the seat head pillow, the headrest 20 presses the connecting member 41 backward to synchronously press the head of the elastic member 42. The end 422 is backward, forcing the elastic member 42 to be elastically compressed as shown by the arrow a in FIG. 4 to generate a cushioning effect; when the pressing force of the headrest 20 is lost, the elastic member 42 can be restored to the original state so that the headrest 2 is also restored. Original position. By this, when the seater sits on the seat, his head rushes backwards. When the pillow is placed on the headrest 2 如图 as shown in Figure 6, at this time, the head of the occupant and the headrest 2 容易 are likely to have a collision. 1358998 The seat back 13 is adjusted from the sitting position to the reclining state by the two if squats. As shown in the figure, the head of the occupant also has a squat pillow on the back of the chair. At this time, the head between the occupant and the headrest 20 is also less than two smashes. The force exerted on the headrest 20 on the headrest 20 is also inclined with the back of the seat back (in the sitting position, the angle of the seat back 13 is approximately 41 minutes, '〒 can be used for the elastic cushioning The connecting member of the mechanism 40 produces a compression effect, so that the headrest 20 and the bracket 30 are produced.
二相對位移，進而達成緩衝效果以緩衝坐者頭部對頭 =20之撞擊力；進一步並可配合頭部枕靠在頭枕2〇上之 作用力的大小而自動調整頭枕2〇之正向位置，也就是舍 該作用力較大時其枕部2G之正向位置則因受壓縮而相& 降低，藉以提昇頭枕20在坐姿、斜躺或平躺姿態下使用 之舒適度。 “ 參考圖4、4Α所示，本實施例之支架3〇進一步可 設計為可伸縮調整之兩段式結構，包含一上段部33及一 下段部34，其係使上段部33套合在下段部34内1在該上 段部33底端可設一貫穿下段部34之橫向長開孔331 了該 橫向長開孔331内設有一壓縮彈簧71及二球體72分別^ 在壓力g彈簧71之兩末端；又在下段部34相對彈簧71伸縮 方向之一侧面上設置一開孔341 ，相對開孔341之另一 内側面342上設有一縱向排列之複數個弧形卡槽343， 再配合該開孔341設有一外蓋35，在外蓋35之^當位置 處設一開孔351以利用一螺絲344穿過開孔351而將外 蓋35與下段部34之開孔341對應鎖合；其中，球體72可 藉由壓縮該彈簧71之彈性而向外卡合一弧形卡槽343 中，藉以組成一具有彈性扣功能之彈性球形扣7〇 ;則藉 由該彈性球形扣70功能，使支架30之上段部33可在下段 部34内上、下滑動移位如圖4之箭頭C所示，以調整^ 8 1358998 度位置並選擇定位在其中一弧形卡槽343中，而達成頭 枕20之高度位置之調整功能。 參考圖5所示，本實施例之頭枕2〇之頭枕面。進一 ^可設具複數片鏤空狀之懸置片體27，該頭枕面21及盆 I置片體27可利用塑膠射出成型工藝一體成型，使由 懸置片體27的彈性作用，而可增進該頭枕20之Second relative displacement, and then achieve a buffering effect to cushion the impact of the head of the head against the head = 20; further can be adjusted with the force of the head pillow against the headrest 2 而 automatically adjust the positive direction of the headrest 2〇 The position, that is, when the force is large, the forward position of the pillow 2G is lowered by the compression, thereby improving the comfort of the headrest 20 in the sitting, reclining or lying posture. Referring to Figures 4 and 4, the bracket 3 of the present embodiment can be further configured as a telescopically adjustable two-stage structure, including an upper section 33 and a lower section 34, which is configured to fit the upper section 33 to the lower section. The inner portion of the upper portion 33 can be provided with a lateral long opening 331 extending through the lower portion 34. The lateral long opening 331 is provided with a compression spring 71 and two spherical bodies 72 respectively. An opening 341 is disposed on one side of the lower portion 34 opposite to the direction of expansion and contraction of the spring 71. The other inner side 342 of the opposite opening 341 is provided with a plurality of longitudinally arranged arcuate slots 343. The hole 341 is provided with an outer cover 35, and an opening 351 is formed at a position of the outer cover 35 to pass through the opening 351 by a screw 344 to lock the outer cover 35 with the opening 341 of the lower portion 34; The ball 72 can be outwardly engaged with an arcuate card slot 343 by compressing the elasticity of the spring 71 to form an elastic ball buckle 7 具有 having an elastic buckle function; The upper portion 33 of the upper portion 34 can be slidably displaced up and down in the lower portion 34 as shown by the arrow C in FIG. As shown, the adjustment position of the height of the headrest 20 is adjusted by adjusting the position of the ^ 8 1358998 degree and selecting to be positioned in one of the curved card slots 343. Referring to Figure 5, the headrest of the present embodiment is The headrest surface can be provided with a plurality of hollowed-out suspension sheets 27, and the head pillow surface 21 and the basin I sheet body 27 can be integrally formed by a plastic injection molding process to make the elasticity of the suspension sheet body 27 Function, which can enhance the headrest 20
μ丄Ν现值苟丰發明的較佳實施例，對本發明而古 明性的，而非限制性的；本專業技術人員理解: 多月3要神和範圍内可對其進行許 護範^内4效變更，但都將落入本發明的保 【圖式簡單說明】 圖？ 有習知頭枕之辦公椅之立體示意圖。 圖2係本發明一實施例安裝在辦公椅上立體示 圖3係本發明辦公椅頭枕一實施例之立體分解示意 圖4係圖3之組合側面示意圖。 刀解不忍较佳 丄Ν 丄Ν 较佳 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明 发明The internal 4 effect changes, but all will fall into the protection of the present invention [simplified illustration] A three-dimensional schematic view of an office chair with a conventional headrest. 2 is a perspective view showing an embodiment of the present invention, which is mounted on an office chair. FIG. 3 is a perspective exploded view of an embodiment of the office chair headrest of the present invention. FIG. Knife can't bear
圖4Α係圖4之局部放大示意圓。 圖5係圖3中頭枕面之立體示意圖。 明之一使用狀態（坐姿）示意圖。 '、本發明之另一使用狀態（斜躺）示意圖。 頭枕組10 頭枕面111 椅背13 頭枕組2 頭枕面21 【主要元件符號說明】 辦公椅1 頭枕11 支架12 背面14 頭枕20 9 1358998 背面板22 槽形座24 穿孔26 支架30 空間部311 開孔321 上段部33 下段部34 内侧面342 螺絲344 開孔351 連接件41 後端部412 末端421 鎖固裝置60 鎖固孔62 外型體64 彈簧71 室間23 外蓋25 懸置片體27 上端部31 下端部32 固定螺絲322 長開孔331 開孔341 弧形卡槽343 外蓋35 彈性緩衝機構40 前端部411 彈性件42 頭端422 鎖固面61 鎖固件63 彈性球形扣70 球體72Figure 4 is a partially enlarged schematic circle of Figure 4. Figure 5 is a perspective view of the headrest face of Figure 3. One of the states of use (sitting posture). ', another schematic state of use (lying) of the present invention. Headrest set 10 Headrest 111 Backrest 13 Headrest set 2 Headrest 21 [Main component symbol description] Office chair 1 Headrest 11 Bracket 12 Back 14 Headrest 20 9 1358998 Back panel 22 Grooved seat 24 Perforated 26 Bracket 30 Space portion 311 Opening 321 Upper section 33 Lower section 34 Inner side 342 Screw 344 Opening 351 Connector 41 Rear end 412 End 421 Locking device 60 Locking hole 62 Outer body 64 Spring 71 Chamber 23 Cover 25 Suspension sheet 27 upper end portion 31 lower end portion 32 fixing screw 322 long opening 331 opening 341 curved card slot 343 outer cover 35 elastic buffer mechanism 40 front end portion 411 elastic member 42 head end 422 locking surface 61 locking member 63 elastic Ball buckle 70 ball 72