200536585 ⑴ 九、發明說明 【發明所屬之技術領域】 本發明係關於適用於游泳術或游泳比賽等的泳鏡。 【先前技術】 市面上早已提出許多種泳鏡，這些泳鏡包含：一對透 鏡單元；一鼻帶，用以連接個別透鏡單元的內端；一頭帶 B ，用以連接個別透鏡單元的外端；及帶扣，係攜帶在頭帶 上且可用於調整頭帶的長度。例如’在日本未審查專利申 請案公告第2 0 0 2 - 4 5 4 3 9號案中所揭示的泳鏡，係在一對透 鏡單元的個別外端上設有頭帶引導與突起，兩者一起合作 而作爲帶扣之用。從泳鏡穿戴者頭部後面向前延伸的頭帶 會繞過個別的頭帶引導，以便界定出摺返次段（turnback subsegment)。這些揺返次段各形成有多數在頭帶的縱向 設置的通孔，使得藉由將每個突出插入其中一通孔內，就 φ 可以調整頭帶的長度。上述專利案中所揭示的泳鏡中，僅 藉由將帶扣的頭帶之突起插入頭帶通孔中所選擇的適當一 通孔內，就可以調整頭帶的長度。然而，假如突起插入得 不恰當的話，頭帶仍然會有從透鏡單元的一或兩外端處鬆 開的可能。此外，當泳鏡戴在穿戴者頭上時，張力會傾向 集中於圍繞著插入的突起之通孔周圍。在重複使用泳鏡之 後，這種張力的局部集中現象有時候會導致泳鏡周圍的斷 裂。 200536585 (2) 【發明內容】 有鑒於上述問題，本發明的目的是要增進先前的泳鏡 ’例如上述專利案所揭示的泳鏡，一方面使得繞過個別透 鏡單元的外端且摺返回來的頭帶，能防止從一或兩端上掉 落，且另一方面，能保護通孔周圍附近的過度損壞。 根據本發明，可藉由在泳鏡上的增進而達成上述目的 。此種泳鏡包含一對透鏡單元、一鼻帶及一頭帶，其中透 • 鏡單元的個別內端係藉由插入鼻帶內而彼此相連，且透鏡 單元的個別外端係藉由插入可調整長度的頭帶內而彼此相 連。 以下爲本發明的增進之處：當戴在穿戴者頭部周圍時 ，頭帶具有縱向正對的尾端區段。每個區段均通過一帶扣 的多數導引狹中所選擇的一適當狹縫，而導引至被組合的 一透鏡單元之外端上，然後在此外端摺返回來，以便從頭 部前方指向後方，而界定出一朝帶扣延伸的折返次段。折 Φ 返次段係被導引通過一適當的導引狹縫，且同時形成在帶 扣上的一突起係以可拆卸的方式裝入折返次段的多數通孔 中所選定的一適當通孔內，其中這些通孔係斷斷續續地設 置在折返次段的縱向上，致使在突出的前方，折返次段可 以緊密地重疊住朝頭部前方延伸的尾端區段之剩餘部位。 藉由本發明的泳鏡，從頭部前面向後延伸的頭帶之每 個尾端區段之折返次段，在位於突起朝頭部前面旁邊的一 位置上形成有多數通孔，且帶扣的一突起係插入到這些通 孔的一適當通孔內。此外，折返次段緊密地重疊住朝頭部 -5- 200536585 (3) 前方延伸的尾端區段之剩餘部位。當戴上此泳鏡時，施加 於頭帶上的張力不僅能被插入選定的通孔內之突起所吸收 ，而且還可以藉由折返次段以及彼此之間緊密重疊的尾端 區段之剩餘部位所吸收。在這種泳鏡的情形中，即使當突 起插入通孔的程度不夠完全時，也不需要擔心頭帶會從一 或兩個透鏡單元上掉落。 根據本發明一較佳實施例，頭帶的尾端區段分別形成 • 有厚次段（thick subsegment)，各延伸在頭帶的一整個寬 度上，且這些厚構件係斷斷續續地設置在頭帶的縱向上。 在根據本發明的泳鏡中，即使當張力施加於具有突起 插入通孔周圍內的頭帶上時，也不用擔心通孔周圍會損壞 ，這是因爲頭帶在通孔附近具有厚次段。 根據本發明另一較佳實施例，在每個尾端區段中，朝 向頭部前面延伸的剩餘部位當受到導引通過導引狹縫時， 此剩餘部位從頭帶的縱向上看來會產生一有角度的姿勢， Φ 且折返次段的厚次段受到擠壓而從頭部後面朝頭部前面緊 靠著此角度部位。 在根據此實施例的泳鏡中，在尾端區段的折返次段上 之一厚次段，能夠擠壓緊靠著在從頭部後面向前延伸的剩 餘尾端區段上之角度部。藉由這樣獨特的裝置，當戴上泳 鏡時，施加於頭帶上的張力能藉由彼此重疊的厚區段與角 度部所吸收，使得具有通孔插入的通孔周圍不會受到此張 力的影響。因此，不需要擔心在重複使用同一泳鏡之後， 可能對頭帶通孔的周圍造成損害。 -6 - 200536585 (4) 【實施方式】 以下’從伴隨附圖所作之說明中，將能完全了解本發 明泳鏡的細節。 圖1中以立體圖顯示的泳鏡1包含一對透鏡單元2、一 鼻帶3及一頭帶4。每個透鏡單元2包含：一透鏡6，係由聚 碳酸酯樹脂或丙烯酸酯樹脂等硬樹脂製成；一框架，係與 透鏡6 —體成形模製，及一墊8，係由矽樹脂、氨基鉀酸酯 ® 或天然橡膠等柔軟彈性材質製成，且用以與泳鏡穿戴者形 成防水的緊密接觸。框架7具有內端1 1與外端1 2，其中內 端係放置在朝向穿戴者的鼻子（未顯示）旁邊，而外端係放 置在朝向穿戴者的耳朵旁邊。較佳的鼻帶3係以可拆卸的 方式裝配至個別透鏡單元2的內端1 1上，以便將個別透鏡 單元2的兩個內端1 1彼此間接地連接起來。頭帶4係用以放 置在穿戴者頭部周圍，且當從放置在頭部周圍的狀態下看 來，包含：放置在頭部背面的一中間區段1 6、從頭部背面 ® 朝前延伸的兩正對尾端區段1 7，及裝配至個別尾端區段1 7 上的帶扣18。每個尾端區段17當通過一帶引導19之後，包 含一再度朝頭部背面延伸的摺返次段2 1。摺返次段2 1形成 有多數通孔22，係斷斷續續地設置在頭帶4的縱向上。每 個帶扣1 8是由聚碳酸酯樹脂、丙烯酸酯樹脂或AB S樹脂 等硬樹脂製成，且設有一突起23，用於可拆卸式地插入其 中一通孔2 2內。 圖2是沿著圖1中線II-II所作之剖面圖，顯示局部的 泳鏡1，且圖3是一立體圖，顯示一帶扣1 8。在泳鏡1中， 200536585 (5) 透1¾單兀2係與墊8 一體成形模製，因此墊8不可能會與透 鏡單兀2分離。裝配至頭帶4上的每一帶扣1 8在第一框架區 段3 1與弟二框架區段32之間界定出一空間，其中第一框架 區段31與第二框架區段32藉由第一支柱33與第二支柱34而 分割成第〜、第二、第三導引空間26，27, 27，當從穿戴 者頭部後面向前看時是以此順序排列。參考圖3，第一框 架區段31、第二框架區段32、第一支柱33與第二支柱34各 ® 於垂直方向上延伸，這些部位在其上端與下端分別整體地 連接到第三框架區段35a與第四框架區段35b，其中第三 框架區段35a與第四框架區段35b在頭帶4的縱向上彼此是 平行延伸。第一框架區段3 1形成有突起2 3，此突起包含一 橢圓頂部（參閿圖1)與一長度爲L的圓柱柄。參考圖2，頭 帶4的每個尾端區段]7首先在結合的帶扣丨8內側向前延伸 ，然後受到引導通過較寬的第一導引空間26及較窄的第二 導引空間27。之後，此尾端區段17在結合的透鏡單元2外 • 端上摺返。尾端區段1 7的摺返次段2 1是從帶扣1 8內側導引 通過第三導引空間28，此空間具有與第一導引空間26大致 相等的寬度。然後，形成在帶扣18上的突起23會插入其中 一通孔2 2內，這些通孔係沿著更往後延伸的尾端區段I 7之 一區段上設置。突起23從第一框架區段3 1以垂直於此區段 3 1的方向延伸，用以調整頭帶的長度，且同時作爲穩定摺 返次段2 1用的一擋止件。 圖4是一立體圖，顯示構成頭帶4的一尾端區段丨7。此 尾端區段17具有外表面17a、內表面17b及尾端表面17 c, -8- 200536585 (6) 其中尾端區段17具有交替設置的薄與厚區段，以便界定出 凹凸狀的外表面17a及平滑的內表面17b。每個厚次段41 在尾端區段17的整個寬度上延伸，且其尾端表面17c描繪 出梯形或圓形且具有一切換處（switch) W。每個厚次段41 形成有從外表面17a穿過內表面17b的通孔22，且這些厚 次段分別有助於提升沿著個別通孔2 2周圍的尾端區段1 7之 強度。較佳的厚次段4 1之厚度T大致上對應於突起2 3的柄 φ 37之長度L，且通孔22的直徑大致上會對應於柄37的直徑 。藉由這樣的尺寸關係，能確保當突起23插入通孔22內時 ，突起23的頂部36會與柄37產生緊密接觸，如圖2所示。 從圖2也可以淸楚看出，在突起23的附近，從第一導引空 間2 6向前延伸到第二導引空間2 7內之厚次段4 1的一部位 41a會受到擠壓’而緊靠著來自後方的頭帶4之尾端區段 1 7的一部位4 2。如此特殊的頭帶4設計，能確保當泳鏡1戴 上穿戴者頭部時，以箭頭A所示方向（參閱圖2 )施加於摺 Φ 返次段2 1上的任何張力均能可靠地被尾端區段1 7的該部位 4 2所吸收，其中厚次段4 1在整個摺返次段2〗的寬度上係受 到擠壓而緊靠著該部位42。因此，不需要擔心這樣的張力 會集中於突起2 3所插入的通孔2 2周圍，導致此周圍的損壞 。於是，不需要擔心摺返次段2 1會在通孔2 2附近受損。因 爲張力在摺返次段2 1的整個寬度上已經被可靠地吸收了， 所以也不需要擔心摺返次段21會在通孔22附近產生局部拉 伸。要知道的是本發明的實施方式也可以將具有厚次段4 1 的頭帶4替換成不具有任何厚次段4 1的扁平頭帶4。雖然如 -9- 200536585 (7) 此一來雖未像圖1的泳鏡1 一般如此有效，但是在這樣的替 換實施例中’當泳鏡1戴在穿戴者的頭上時，也可藉由扁 平尾端區段17本身的重疊而可靠地吸收產生出來的張力， 如此一來，仍可以避免插入的突起23對通孔22周圍產生惱 人的張力集中現象。 圖5是類似於圖3的一圖，顯示另一實施例的一帶扣。 此實施例也可以倂入本發明的泳鏡1。此種帶扣1 8與上述 • 實施例的帶扣18不同之處，在於突起23是形成於第二支柱 3 4上。在採用此種帶扣1 8的泳鏡1中，厚次段4 1的一部位 41b(參閱圖2)係受到擠壓而緊靠著來自前方的一部分摺返 次段17，藉此防止張力集中於插入突起23的通孔22周圍’ 然而，此實施例並未像圖3的帶扣1 8之情形如此有效。 本發明能提供一種增進的泳鏡’不需要擔心頭帶可能 會從個別透鏡單元的外端鬆開。 # 【圖式簡單說明】 圖1是一立體圖，顯示一泳鏡； 圖2是沿著圖1中線II-II所作之剖面圖； 圖3是~立體圖，顯不一*帶扣， 圖4是一立體圖，顯不頭帶的一部分，及 圖5是類似於圖3的一圖，顯示另一實施例的一帶扣。 【主要元件符號說明】 1 泳鏡 -10- 200536585200536585 九 IX. Description of the invention [Technical field to which the invention belongs] The present invention relates to swimming goggles suitable for swimming or swimming competitions. [Prior art] Many types of swimming goggles have been proposed on the market. These swimming goggles include: a pair of lens units; a nose band for connecting the inner ends of individual lens units; and a headband B for connecting the outer ends of individual lens units. ; And a buckle, which is carried on the headband and can be used to adjust the length of the headband. For example, the swimming goggles disclosed in Japanese Unexamined Patent Application Publication No. 2002- 4 5 4 3 9 are provided with headband guides and protrusions on the respective outer ends of a pair of lens units. Work together as a buckle. Headbands that extend forward from behind the goggles wearer's head will be guided around individual headbands to define a return subsegment. Each of these return sections is formed with a plurality of through holes provided in the longitudinal direction of the headband, so that by inserting each protrusion into one of the through holes, the length of the headband can be adjusted by φ. In the swimming goggles disclosed in the above patents, the length of the headband can be adjusted only by inserting the protrusion of the headband of the buckle into an appropriate through-hole selected from the through-holes of the headband. However, if the protrusion is not inserted properly, the headband may still be loosened from one or both outer ends of the lens unit. In addition, when the goggles are worn on the wearer's head, the tension tends to be concentrated around the through hole surrounding the inserted protrusion. This localized concentration of tension can sometimes cause cracks around the goggles after repeated use of the goggles. 200536585 (2) [Summary of the invention] In view of the above problems, the purpose of the present invention is to improve the previous swimming goggles, such as the swimming goggles disclosed in the above patents, on the one hand, to bypass the outer end of the individual lens unit and return it The headband can prevent falling from one or both ends, and on the other hand, can prevent excessive damage around the through hole. According to the present invention, the above-mentioned object can be achieved by improvement on swimming goggles. This swimming goggle includes a pair of lens units, a nose band and a headband, wherein the individual inner ends of the lens unit are connected to each other by being inserted into the nose band, and the individual outer ends of the lens unit are adjustable by being inserted Length headbands are connected inside each other. The following is an improvement of the present invention: When worn around the wearer's head, the headband has a tail section that is vertically oriented. Each section is guided to the outer end of a combined lens unit through an appropriate slit selected from the majority of the guide slits of a buckle, and then folded back at the outer end to point from the front of the head Rear, and defines a turn-back subsection that extends towards the buckle. The return section is guided through an appropriate guide slit, and a protrusion formed on the buckle at the same time is detachably installed in a suitable passage selected in most of the through holes of the return section. Inside the holes, these through-holes are intermittently arranged in the longitudinal direction of the turn-back subsection, so that in the front of the protrusion, the turn-back subsection can closely overlap the remaining part of the tail section extending forward of the head. With the swimming goggles of the present invention, a plurality of through holes are formed at a position of the rear end of each headband extending backward from the front of the head, and the buckle A protrusion is inserted into an appropriate through hole of these through holes. In addition, the turn-back sub-section closely overlaps the remaining portion of the tail section extending forward of the head -5- 200536585 (3). When wearing this swimming goggle, the tension applied to the headband can be absorbed not only by the protrusion inserted into the selected through hole, but also by the reentry of the secondary section and the remaining end sections that closely overlap each other. Absorbed by the site. In the case of such swimming goggles, there is no need to worry about the headband falling off one or two lens units even when the protrusion is not sufficiently inserted into the through hole. According to a preferred embodiment of the present invention, the tail end sections of the headband are respectively formed with thick subsegments, each extending over the entire width of the headband, and these thick members are intermittently disposed on the headband Vertical. In the swimming goggles according to the present invention, even when tension is applied to the headband having protrusions inserted around the through-hole, there is no need to worry about damage around the through-hole because the headband has thick sections near the through-hole. According to another preferred embodiment of the present invention, in each tail end section, when the remaining portion extending toward the front of the head is guided through the guide slit, the remaining portion will appear from the longitudinal direction of the headband. In an angled posture, Φ and the thick sub-fold of the turn-back sub-section are squeezed from the back of the head toward the front of the head against this angle. In the swimming goggles according to this embodiment, one thick sub-segment on the turn-back sub-segment of the tail end section can be pressed against the angle portion on the remaining tail end section extending forward from the back of the head. With such a unique device, when the goggles are worn, the tension applied to the headband can be absorbed by the thick sections and angle portions overlapping each other, so that the tension around the through-hole with the through-hole insertion is not subject to this tension. Impact. Therefore, there is no need to worry about damaging the surroundings of the through hole of the headband after repeatedly using the same goggles. -6-200536585 (4) [Embodiment] The details of the goggles of the present invention will be fully understood from the following description accompanying the drawings. The swimming goggle 1 shown in a perspective view in FIG. 1 includes a pair of lens units 2, a nose band 3, and a head band 4. Each lens unit 2 includes: a lens 6 made of hard resin such as polycarbonate resin or acrylate resin; a frame formed integrally with the lens 6 and a pad 8 made of silicone resin, Made of soft and elastic materials such as urethane® or natural rubber, and used to make waterproof, close contact with the goggle wearer. The frame 7 has an inner end 11 and an outer end 12 where the inner end is placed next to the wearer's nose (not shown) and the outer end is placed next to the wearer's ear. The preferred noseband 3 is detachably assembled to the inner ends 11 of the individual lens units 2 so as to indirectly connect the two inner ends 11 of the individual lens units 2 to each other. The headband 4 is placed around the wearer's head, and when viewed from the state of the head, it includes: a middle section 16 placed on the back of the head, and 6 extending from the back of the head forward The two are opposite the end section 17 and the buckle 18 assembled to the individual end section 17. Each trailing end section 17, after passing through a belt guide 19, includes a turn-back section 21 which again extends toward the back of the head. The turn-back subsection 21 is formed with a plurality of through-holes 22 and is intermittently provided in the longitudinal direction of the headband 4. Each buckle 18 is made of a hard resin such as polycarbonate resin, acrylic resin, or AB S resin, and is provided with a protrusion 23 for detachably inserting one of the through holes 22 therein. Fig. 2 is a cross-sectional view taken along the line II-II in Fig. 1, showing a part of the swimming goggles 1, and Fig. 3 is a perspective view showing a buckle 18. In swimming goggles 1, 200536585 (5) through 1¾ unit 2 is integrally molded with the pad 8 so it is impossible for the pad 8 to be separated from the lens unit 2. Each buckle 18 fitted to the headband 4 defines a space between the first frame section 31 and the second frame section 32, wherein the first frame section 31 and the second frame section 32 are formed by The first pillar 33 and the second pillar 34 are divided into first, second, and third guide spaces 26, 27, and 27, and are arranged in this order when viewed from behind the head of the wearer. Referring to FIG. 3, the first frame section 31, the second frame section 32, the first pillar 33 and the second pillar 34 each extend in a vertical direction, and these portions are integrally connected to the third frame at the upper and lower ends thereof, respectively. The section 35 a and the fourth frame section 35 b, wherein the third frame section 35 a and the fourth frame section 35 b extend parallel to each other in the longitudinal direction of the headband 4. The first frame section 31 is formed with a protrusion 23, which includes an oval top (see Fig. 1) and a cylindrical shank having a length L. Referring to FIG. 2, each end section of the headband 4] 7 first extends forward inside the combined buckle 8 and is then guided through a wider first guide space 26 and a narrower second guide Space 27. This trailing end section 17 is then folded back on the outer end of the combined lens unit 2. The turn-back secondary section 21 of the trailing end section 17 is guided from the inside of the buckle 18 through a third guide space 28 having a width substantially equal to that of the first guide space 26. Then, the protrusion 23 formed on the buckle 18 is inserted into one of the through holes 22, and these through holes are provided along one of the tail end sections I 7 extending further rearward. The protrusion 23 extends from the first frame section 31 in a direction perpendicular to this section 31 to adjust the length of the headband and at the same time serves as a stopper for stably returning the secondary section 21. FIG. 4 is a perspective view showing a tail end section 7 constituting the headband 4. This tail end section 17 has an outer surface 17a, an inner surface 17b, and a tail end surface 17c, -8-200536585 (6) wherein the tail end section 17 has thin and thick sections arranged alternately so as to define a concave-convex shape The outer surface 17a and the smooth inner surface 17b. Each thick-thickness section 41 extends over the entire width of the trailing end section 17, and its trailing end surface 17c is depicted as a trapezoid or a circle and has a switch W. Each thick subsection 41 is formed with a through hole 22 from the outer surface 17a through the inner surface 17b, and these thick subsections respectively contribute to increasing the strength of the tail end section 17 along the periphery of the individual through hole 22. The thickness T of the preferred thick section 41 substantially corresponds to the length L of the shank φ 37 of the protrusion 23, and the diameter of the through hole 22 approximately corresponds to the diameter of the shank 37. With such a dimensional relationship, it can be ensured that when the protrusion 23 is inserted into the through hole 22, the top 36 of the protrusion 23 will come into close contact with the handle 37, as shown in FIG. 2. It can also be clearly seen from FIG. 2 that a portion 41 a of the thick sub-section 41 that extends forward from the first guide space 26 to the second guide space 27 near the protrusion 23 will be squeezed. 'And it is close to a part 4 2 of the rear end section 17 of the headband 4 from the rear. Such a special design of the headband 4 can ensure that when the swimming goggle 1 is put on the wearer's head, any tension applied in the direction indicated by the arrow A (see FIG. 2) to the folding Φ return section 21 can be reliably It is absorbed by this part 4 2 of the tail end section 17, wherein the thick sub-section 41 is squeezed over the entire width of the turn-back sub-section 2 and abuts on this part 42. Therefore, there is no need to worry that such tension will be concentrated around the through hole 22 where the protrusion 23 is inserted, resulting in damage to the surrounding area. Therefore, there is no need to worry about the turn-back secondary section 21 being damaged near the through hole 22. Since the tension has been reliably absorbed over the entire width of the turn-back subsection 21, there is no need to worry about the partial return of the turn-back subsection 21 near the through hole 22. It should be understood that, in the embodiment of the present invention, the headband 4 having the thick subsection 41 can also be replaced with a flat headband 4 having no thick subsection 41. Although it is not as effective as -9-200536585 (7), it is not as effective as the swimming goggle 1 of FIG. 1, but in such an alternative embodiment, when the swimming goggle 1 is worn on the wearer's head, The flat tail end section 17 itself overlaps and reliably absorbs the generated tension. In this way, the annoying tension concentration phenomenon of the inserted protrusion 23 around the through hole 22 can still be avoided. Fig. 5 is a view similar to Fig. 3, showing a buckle according to another embodiment. This embodiment can also be incorporated into the swimming goggles 1 of the present invention. This type of buckle 18 is different from the buckle 18 of the above-mentioned embodiment in that the protrusion 23 is formed on the second pillar 34. In the swimming goggles 1 using such a buckle 18, a part 41b (see FIG. 2) of the thick subsection 41 is squeezed to fold back the subsection 17 next to a part from the front, thereby preventing tension Concentrated around the through hole 22 of the insertion protrusion 23 'However, this embodiment is not as effective as the case of the buckle 18 of FIG. The present invention can provide an improved swimming goggles' without worrying that the headband may be loosened from the outer end of the individual lens unit. # [Schematic description] Figure 1 is a perspective view showing a goggles; Figure 2 is a cross-sectional view taken along the line II-II in Figure 1; Figure 3 is a ~ perspective view showing a * belt buckle, Figure 4 Is a perspective view showing a part of the headband, and FIG. 5 is a view similar to FIG. 3 showing a buckle of another embodiment. [Description of main component symbols] 1 Swimming goggles -10- 200536585
(8) 2 透 鏡 單 元 3 鼻 帶 4 頭 帶 6 透 鏡 7 框 架 8 墊 11 內 端 12 外 端 16 中 間 段 17 尾 端 段 17a 外 表 面 17b 內 表 面 17c 尾 端 表 面 18 帶 扣 19 帶 導 引 2 1 摺 返 次 段 22 通 孔 23 突 起 26 第 — 導 引 空 間 27 第 二 導 引 空 間 28 第 二 導 引 空 間 3 1 第 —· 框 架 段 32 第 二 框 架 區 段 ο n J J 第 —- 支 柱 -11 200536585(8) 2 Lens unit 3 Nose strap 4 Headband 6 Lens 7 Frame 8 Pad 11 Inner end 12 Outer end 16 Middle section 17 Tail section 17a Outer surface 17b Inner surface 17c Tail surface 18 Buckle 19 Belt guide 2 1 Reentry secondary section 22 through hole 23 protrusion 26 first-guide space 27 second guide space 28 second guide space 3 1 first-frame section 32 second frame section ο n JJ first-pillar 11 200536585
34 35a 35b 3 6 3 7 4 1 4 1b34 35a 35b 3 6 3 7 4 1 4 1b
第二支柱 第三框架區段 第四框架區段 頂部 柄 厚次段 部位 部位Second pillar Third frame section Fourth frame section Top shank Thick subsection
-12 --12-