200404127 Ο) 玖、發明說明 (發明說明應敘明：發明所屬之技術領域、先前技術、内容、實施方式及圖式簡單說明） [技術領域] 本發明係關於一種抽芯鉚釘，由鉚釘本體和插入鉚釘本 體之中空孔的長形芯軸構成，強力拉動芯軸而使鉚釘本體 軸部擴徑變形’藉由該變形軸部部分和凸緣而安裝在板件 等被鎖接構件。尤其’本發明之抽芯柳釘係一種適於鎖接 在被鎖接構件為電器設備或電路基板等，以塑膠成形，會 因為強大鎖接力而有造成破破裂、白痕之虞之構件。 [先前技術] ' 習知眾所週知之抽芯鉚釘，具備：中空之金屬製鉚針本 體，由軸部及該軸部-端之凸緣構成；金屬製芯軸，比插 入鉚釘本體之中空孔的該鉚釘本體長；且芯軸之形成在一 端的頭部，以和鉚釘本體之凸緣位於相反之㈣端的 插入，強力拉動芯轴使鉚釘本體轴部擴徑變形，藉由該傲 形軸部部分和凸緣而安裝在板件等被鎖^ 昭一】。號公報揭示有該抽芯柳針之一例。且中= 抽芯鉚釘中，拉動芯軸時，芯麵頭 又 軸部從端部擴徑變形。作 ㈣曰使鉚釘本體 单妒砧” 仁4餸形為了在本體外周部形成 千i的丈形，鉚接初期會在被鎖接構件形忐浐Λ & 4 早之庫* ,4#斤丄 只狡得仔形成施加如打入楔 μ力（t、後力）。被鎖接構件剛性 軸部以被鎖接構件之4 。、，自於鉚釘本體 半發生強大麼接力邊=/刀為起點而拱徑，因此鉚接後 相反地，剛性低的被 虫入刀里在接。 被鎖接構件）較兮柙， 木人树脂或邊緣距離小的 )#“亥楔子形狀變形之摒徑力弱，而會與鉚針本 (2) (2)200404127 ::拱徑-起擴張，進—步芯軸頭部伸入鉚钉本 ，200404127 0) 玖, description of the invention (the description of the invention should state: the technical field, the prior art, the content, the embodiments and the drawings of the invention are briefly explained) [Technical Field] The invention relates to a core rivet, which consists of a rivet body and The elongated mandrel inserted into the hollow hole in the rivet body is strongly pulled to deform the shaft portion of the rivet body to expand and deform. The deformed shaft portion and flange are mounted on a locked member such as a plate. In particular, the wicking nail of the present invention is a member suitable for being locked to a locked member such as an electrical device or a circuit board, which is formed of plastic, which may cause breakage and white marks due to strong locking force. [Prior art] '' The well-known core rivet, which includes: a hollow metal rivet needle body, which is composed of a shaft portion and a flange at the end of the shaft portion; The rivet body is long; and the head of the mandrel is formed at one end to be inserted at the opposite end to the flange of the rivet body. The mandrel is strongly pulled to deform and expand the shaft portion of the rivet body. Parts and flanges while being mounted on plates etc. are locked ^ Shoichi]. The gazette discloses an example of the cored willow needle. And the middle = in the core rivet, when the mandrel is pulled, the mandrel head and the shaft portion expand and deform from the end. In order to form a single jealous anvil on the body of the rivet, the shape of the ren is formed in the outer periphery of the body. At the initial stage of rivet, the shape of the locked member will be 忐 浐 Λ & 4 Zaoku *, 4 # catty. Only the tricks are formed, such as driving the wedge μ force (t, rear force). The rigid shaft of the locked member is 4 of the locked member.... Since the half of the rivet body is strong, the relay edge = / knife is The starting point is the arch diameter, so after the riveting, on the contrary, the low-rigidity insects are inserted into the knife. The locked components) are more sloppy, the wood resin or the edge distance is smaller) Weak, but it will expand with the rivet pin (2) (2) 200404127 :: arch diameter-from the expansion, into the step-the head of the mandrel extends into the rivet pin,
被鎖接構件遭致損壞。 P 為：解決如上述問題點’曰本特開昭6i_m =芯柳釘’係以解決造成鎖接不良之方式形成: 二會穿通被鎖接構件之安裝孔。因此，芯轴轴 =部和頭部之間形成有不分開之第2小徑部，鉚釘本= 軸軸部之第2小徑部位置形成有縮徑部，：公 ，：：所圖示，拉動芯轴時，從鉚釘本體軸部之縮徑部起 凸緣側之鉚釘本體軸部部分劇烈 3分進-步縮徑變形，即使塑膠構件等剛二= 穿通該安裝孔。且，由於㈣本體轴部之縮I部 而搶接在芯軸軸部之第2小徑部，因&分開 心由碩部及短轴部部分在㈣了本體㈣ 防止鎖接後發生雜音。 亏风不二轉， [發明所欲解決問題] 上述μ週知之抽芯鉚釘適料將塑膠製品安裝在板件 …但’隨著最近安裝技術之高密度化，剛性低的塑 =得更料，出現了會因為強力鎖接力而有造成破裂、、 ::虞之構件’如此之構件上不期望有上述抽芯鉚釘之 ::=。例如’鉚釘本體轴部在凸緣和溝之間的被鎖 籌：中拱徑，被鎖接構件遭致損壞。若減弱鎖接力以免 貝展被鐵接構件，則有壓接力亦變弱，或無法固接芯轴頭 部之問題。因此，期待出現-種可確實地鎖接在被鎖接構 (3) 200404127 明續頁 件且不會造成破裂、白痕之抽芯鉚_。 曰本特開平7_1807!2號公報揭示有 釘。該抽芯鉚釘之鉚 附釘帽之抽芯鉚 體軸部形成有月、、盖“ 者靖形塑膠針帽。鉚釘本 ，钉帽以===形f有嵌合在該周溝之突起 帽之抽芯鉚4了亦如公報^圖^1^之方式形成。該附有釘 釘本體軸部部分會擴張，：協動周溝和芯軸之間的鉚 在被鎖接構件…，不適 性低的塑膠構件等。曰本特開平 種鉚釘本體軸部形成2個周溝之㈣ =有 報之圖2至BI 4沉-^ β抽Ά鉚釘如公 视心0 2至圖4所不，2個周溝之間的鉚 張’與凸緣協動而以強大鎖接力安裝在被J接構：分= ，该抽芯鉚釘亦不適於有造成破裂、白 塑膠構件等。 又之慮之剛性低的 日本實開平6 _ 7 8 6〗㈣公報所揭示之抽㈣釘 2個被鎖接構件，以可在鎖接 ’、衣 =:離凸Γ被鎖接構件。該抽芯鉚釘之鉚釘本體軸 f到端部’僅形成2個被鎖接構件厚度 且形成比另一軸部部分容易變形。拉動芯轴 =开4㈣分Μ作用，使該薄壁部分擴 住受形，但2個被鎖接構件厚度部分之鉚釘本體軸部部分不 =該”中，進一步拉動時，如公報之段落編號_ 所记載，芯軸藉由壁厚變化所造叙急義擊力而分開，2 個被鎖接構件厚度部分之鉚釘本體轴部部分仍舊保持不變 (4) (4)200404127Damage to the locked components. P is: To solve the above-mentioned problems, ‘Yi Benkai 6i_m = core rivet’ is formed in a way to solve the problem of poor locking: Second, it will pass through the mounting hole of the locked member. Therefore, a second small-diameter portion is formed between the mandrel shaft = portion and the head, and the rivet is formed at the position of the second small-diameter portion of the shaft portion. When pulling the mandrel, the rivet body shaft part on the flange side is sharply 3-pointed from the reduced-diameter part of the rivet body shaft-step shrinkage deformation, even if the plastic member and so on = pass through the mounting hole. In addition, because of the shrinkage of the main body shaft portion, the second small diameter portion of the mandrel shaft portion is grabbed, and the main body and the short shaft portion are separated from the main body and the main shaft portion to prevent noise from occurring after locking. . Deficiencies have not changed, [the problem to be solved by the invention] The above-mentioned well-known core rivets are suitable for installing plastic products on boards ... but 'with the recent increase in the density of mounting technology, low-rigidity plastic = more material It appears that there will be cracks due to the strong locking force, and the :: Yu's member 'is not expected to have the above core pulling rivet on such a member :: =. For example, the shaft of the rivet body is locked between the flange and the groove: the middle arch diameter, and the locked member is damaged. If the locking force is weakened to prevent the iron-clad members from being welded, the crimping force will become weak, or the head of the mandrel cannot be fixed. Therefore, it is expected that a kind of core riveting _ which can be reliably locked in the locked structure (3) 200404127 will be continued without causing cracks and white marks. Japanese Patent Publication No. 7_1807! 2 discloses nails. The core part of the rivet body with the rivet cap of the core rivet is formed with a plastic needle cap with a moon shape and a cap shape. In the rivet book, the cap has a protrusion fitted in the circumferential groove in the shape of === The core rivet 4 of the cap is formed in the same manner as in the bulletin ^ Figure ^ 1 ^. The shaft part of the body with the nail is expanded: the rivet between the perimeter groove and the mandrel is locked to the locked member ..., Plastic components with low discomfort, etc. The shaft of the rivet body of this Japanese special Kaiping rivet forms two perimeter grooves = Figure 2 to BI 4 Shen-^ β pumping rivets as shown in Figure 2 to Figure 4 No, the rivets between the two perimeter grooves are installed in the joint structure with a strong locking force in conjunction with the flanges: min =, this core rivet is not suitable for causing cracks, white plastic components, etc. Japan ’s Shikaihei 6_ 7 8 6】, which is considered to be low in rigidity, has two bolt-locked members disclosed in the bulletin, so that the bolt-locked members can be locked in the lock. The rivet body rivet shaft f to the end portion only forms the thickness of two locked members and is more easily deformed than the other shaft portion portion. Pulling the mandrel = opens 4㈣minutes M to expand the thin-walled portion. It is deformed, but the rivet body shaft part of the thickness part of the two locked members is not equal to this. When it is further pulled, as described in the paragraph number _ of the bulletin, the mandrel is created by the change in wall thickness. Separated by the impact force, the rivet body shaft part of the thickness part of the two locked members remains unchanged (4) (4) 200404127
形，2個被鎖接構件藉由鉚釘本體軸部之薄壁部分之擴徑變 形部分和凸緣而互相連結。然後，由於確保住被鎖 厚度部分之長度的鉚釘本體軸部部分不會變形，因此相對 於-方之被鎖接構件，可使另-方被鎖接構件在芯轴本體 軸部周圍旋轉。言玄公報記載之抽芯柳針亦可用力有造成破 裂、白痕之虞之剛性低的塑膠構件等，此時，由於鉚釘本 體軸部不會在被鎖接構件厚度部分擴徑變形，因此認為可 避免對被鎖接構件發生強大鎖接力作用。但，該抽：鉚釘 丁本體軸部<端部（與凸緣相反之端部），必須形成— 二驟1: Γ部。因此，必須有用於形成薄壁部之設備或 乂驟，就生產性而言效率不佳且會提高抽芯鉚針之價格。 被明之目的在以低價提供—種可確實地鎖接在 鎖接構件且不會造成破裂、白痕之抽芯鉚針。 [解決問題方案] ^達成相關㈣，本發明提供—種抽芯鉚釘，且備· 本體，由軸部及該軸部—端之凸緣構成；芯軸 頭部，，釘本體之二反::： 件，其特徵 之面形成斜面，該斜面從比該鉚二:::軸：端相對 徑部朝向比該鉚針本體軸部内徑小二軸::：大徑之大 釘本體軸部之外周 ：之心軸軸心前述鉚 足則述凸緣起，在與前述被鎖接構 (5) (5)200404127 ^厚度相等之位置或略微偏離之位置，形成有周方向之 :目：之抽芯鉚釘中，拉動芯軸時，芯軸頭 ==從端部擴徑變形。此時之擴徑起點為柳釘本 广均二：周溝部分。因此，無論有無被鎖接構件 -只也以周溝為起點開始拱徑。由 在與被鎖接構件相楚斗、，# 门/再 < 位置。又疋 被鎖接Μ杜# 專或較其略微上部，因此拱徑部連接在 =構件日”拱徑部會擴大成充分之徑 接力作用且d ，幾乎都發生當作垂直方向之壓 形成”接：積大，因此被鎖接構件不會損壞，並可 鉚釘之鉚釘本體軸部=二；：不：具備使該抽芯 粹僅將3、、# π ^ 成所疋長度溥壁之步驟及設備，純 、σ溝形成在鉚釘本體軸部外周面之所定位置 因此其製造簡單，可用低價提供抽芯鉚釘 即了， 二，可卿頭部之斜面形成圓錐形。且 轴部外周簡單地將前述周溝形成在柳釘本體 [實施方式] 表：=說明本發明之-種實施型態。圖1 之抽芯鉚釘鉚= 中’抽芯鉚釘1具備中空之金屬製鉚釘:’體:3; :1及圖2 轴較:， 、、良衣k，鉚釘本體2以鋁製造。 200404127 ⑻ ，鉚釘本體2由軸部5和軸部5 一端之大徑凸緣6構成，全體 形成中空且以收容芯軸3之方式形成，凸緣6反側之鉚釘本 體軸部之端部7開口。圖示之鉚釘本體2中，凸緣6形成圓形 ’軸部5形成圓冑筒形體。如圖i及圖2所圖#，芯轴3由較 、卻釘本體軸彳5長许多之軸部9，和較柳釘本體轴部$之端部 7大拴之頭邛1〇形成，頭部1〇和軸部9之交界部分由較另一 轴部部分小捏之分關邱八 立 炙刀開邛刀11形成。小徑之分開部分11係任 :、位置，但形成在實施型態所示之位置時，由於分開後之 心轴3可回收在鎖接工具之回收箱，因此芯轴3大部分可回 收，而得以維持高回收率。芯軸軸部9形成有小徑之第2小 分13’鄰接在分開部分u且較分開部分大徑，但較另 # 軸軸邠部分小徑。芯軸軸部9之長度從鉚釘本體凸緣6 :二？突出部分之長度形成可充分把持在鎖接工具(不圖 之把持構件。且前端形成尖細以易於插入鎖接工具 本發明+，芯軸頭部10之與柳釘本體 形成斜面-該斜面從與該柳針本體轴部 相專的大徑部朝向比鉚釘本體軸部 师施型態中為分開部分⑴。該斜面為任音轴 但以形成圓錐形則可簡單地形成為佳。但 ， 錐形二或亦可形成從大徑部連結在芯軸軸部心::成角 狀。猎由該斜面14強力拉動芯軸軸部時〜形 會使端部7發生擴徑變形作用。 、了本體軸部5 且，㈣本體2之轴部5外周面，從凸緣6起，在被鎖接構 200404127 ⑺ 等之位置或較其略微偏離之位置，形成有沿著 例如二=2。鉚釘本體軸部外周面之所定位置， 叮错由滾壓或拉延而簡單地形成該周溝" 設成使該鉚釘軸部部分較其 =15衣 強度，且當作鉚針本體軸部5之擴徑變 連鉚釘^可梅構件之第2被鎖接構件 構1鎖Γ1Γ構件。此時，周溝15僅第1被鎖接 午矛弟2破鎖接構件合併之板厚相等之長 形成在偏離凸緣6之位置。該等被鎖接構件形= 已收谷鉚釘本體軸部5之 ::接構件之狀態，將抽芯鉚釘〗插入;; 為前頭’將鉚釘本體2之軸部5插入被鎖接構 1插入安衣壯A &緣6接面為止。該插入可用手將抽芯鉚釘 且之狀亦可在抽芯柳釘1之芯轴轴部9保持在鎖接工 ιίίΓΓ抽芯鉚釘1保持在鎖接工具時保持在該狀態 把持ΓΓΙ1插入安裝孔時，在芯轴3之轴部9的部分 =鎖接工具前端之狀態，使鎖接工具動作，芯 9 以❹㈣㈣分開之程度強力拉動。 # <7軸邛4軸頭部10之斜面14會使鉚釘本體軸 侧擴徑變形’該變形將到達鉚針本體軸部5之周 溝1 5的部分。兮讲和山 “ .. r Μ 私中’在鉚釘本體擴徑部充分擴徑之狀 =以Μ接被鎖接構件之方式設定周溝之位置。此時，鉚 :本體之耐力和被鎖接構件之耐力相加，較其前端之凸緣6 1之、部釘本體軸部部分幾乎不會變形。因A，抽芯鉚釘1 -11 - 200404127 發明說明續頁 之鉚針本體軸部5在被鎖接構件之厚度部分（周溝i5和凸緣 ^的。卩刀）不會擴徑變形，可避免對被鎖接構件發生強大 拱徑力作用。因而，即使被鎖接構件係薄的塑膠構件，變 开^應力亦幾乎不會在該構件發生作用，而不會在被鎖接構 ，造成破裂、白痕。^，假設被鎖接構件因為垂直方向之 麼接力造成之變形而造成破裂、白痕時，可藉由降㈣接 力之方式而降低芯軸分開力。再者，由於從周溝”起，端 4 7側之鉚釘本體軸部部分，以非常低的力量擴徑變形，因 此可確實地鎖接。然後，由於僅在抽芯鉚釘之芯軸頭部形 狀和鉚針本體軸部形成周溝即可，因此其製造亦簡單，可 用低價提供抽芯鉚釘。 參圖3至圖7，並配合比較例說明關於實際實行之實施 例。圖3(A)表示鉚釘本體軸部未形成周溝之比較例所相關 之$芯鉚釘，圖3(B)表示形成有周溝15之本發明所相關之 。、印釘圖5至圖7中，亦表示各圖之⑷為比較例之抽芯 、P ’丁 —各圖之（B)為本發明之實施例所相關之抽芯鉚釘。 已實施之抽芯鉚釘之材料係鉚釘本體為鋁合金，芯軸由 硬鋼線作成。且，各尺寸係鉚釘本體軸部長度為“匪， 凸緣為直偟6.4 mm，厚度〇·9 _之圓形，周溝㈠之位置形 成在從凸緣面起4.〇麵之位置。本發明之實施例中形成有 周f ^，但比較例中未形成有周溝。芯軸之從凸緣突出之 軸邛部分的長度形成26 mm，芯軸頭部之斜面傾斜，對鉚 釘本體軸部端部之端面設定成約3〇度。該等尺寸係用於比 車乂研九本發明之參考，本發明無意限定於此。 (9) (9)200404127 圖4之圖表表不鎖接比較例之抽芯鉚釘時的行程長度 (顏）對芯轴拉力（kN)之特性曲線（實線），和鎖接本發明所 相關之抽心鉚釘知的行程長度（咖）對怒轴拉力㈣）之特性 曲線（虛線）。藉由鎖接工具緩緩地拉動芯轴，在超過4麵 而接近5 mm之處，拉力急遽地下降而在分開部分分開，表 示兀成鎖接作業。分剖開時的最大拉力在2⑽和之 間的私度’抽芯鉚釘則設定成以比較弱的力量分開。該圖 表中，C所表示之行程長度係比較例之抽芯鉚釘和本發明之 抽亀之行程長度差。圖4之圖表為本發明之抽芯鉚釘藉 交：=芯鉚針短的行程長度完成分開，即鎖接作 邛。卩 U王短的部分表示芯轴頭部未伸入鉚釘本體軸 能圖之圖表之°點中的鉚釘本體軸部擴徑變形狀 :抽：比較例之抽芯鉚釘，嶋示本發明所相關 之圖二二鎖接構件17為塑膠構件。將芯軸拉動至圖4 圖表之D點蚪，芯軸頭部之斜面會使鉚4太 部側擴徑變形使柳釘本體轴部從端 侧平穩地變形。二二Γ例 知該變形係於凸緣 打入棋子之方%Γ 對於容易破裂之被鎖接構件以 。相對地，⑻irv形成在被鎖接構件施加強大棋徑力 部之擴徑變开/ 月所相關之抽芯鉚釘中，鉚钉本體軸 <擴k夂形，係變形到鉚釘本 部分，在該部分變一：： 、之凸緣侧之鉚針本體轴部部分幾乎不變形。 -13- 200404127 (ίο) 相對&較例中’芯軸頭部從周溝之某位置進一牛伸 =之鉚釘本體轴部’造成被鎖接構 ：：入 圖6表示圖4之圖表之e點中的鎖接後之鉚針本in 徑變形狀態。圖6(A)表干^点丨七1 體轴口p擴 1 )表不比較例之抽芯鉚釘，（B)表示太於 明所相關之抽芯鉚針。圖6(Β)表示抽芯鉚釘 ^ 料被鎖接構件厚度部分幾乎不變形，避免對㈣ ^生強大拱役力作用，同時從周溝起，端部側之鉚釘 之抽破裂、白痕之狀態。相對地，圖6(a)比較例 开 釘中，柳釘本體轴部在被鎖接構件厚度部分亦變 會劇烈變形。°右侧之騎本體軸部在被鎖接構件厚度部分 :7(A)、(B)係從上部看圖6㈧、⑻之鎖接後之抽芯鉚釘 t視圖。圖7(A)比較例之抽㈣Μτ在塑膠製被鎖接構件 ^成破裂18。相對地，圖7(Β)本發明之抽怒柳針，得知 ?當地鎖接在塑膠製被鎖接構件17而不會造成破裂、白痕The two to-be-locked members are connected to each other by an enlarged-diameter deformed portion and a flange of the thin-walled portion of the shaft portion of the rivet body. Then, since the shaft portion of the rivet body that secures the length of the locked thickness portion is not deformed, the other locked member can be rotated around the shaft portion of the mandrel body relative to the locked member. The cored willow needles described in the Yanxuan Bulletin can also be applied to low-rigidity plastic components that may cause cracks and white marks. At this time, the shaft portion of the rivet body will not expand and deform in the thickness of the locked component. It is considered that a strong locking force effect on the locked members can be avoided. However, the pumping: rivet body shaft portion < end portion (end opposite to the flange) must be formed-second step 1: Γ section. Therefore, it is necessary to have equipment or steps for forming a thin-walled part, which is inefficient in terms of productivity and increases the price of a core pulling rivet. The stated purpose is to provide a rivet pin that can be securely locked to a locking member without causing cracks and white marks, at a low price. [Solution to the problem] ^ Achieving the relevant problem, the present invention provides a kind of core-pulling rivet, and the main body is composed of a shaft portion and a flange at the end of the shaft portion; ::: The characteristic surface of the piece forms an inclined surface. The inclined surface faces from the rivet 2 ::: shaft: the opposite diameter portion of the end faces the inner diameter of the rivet pin body shaft smaller than the second axis ::: the large nail body shaft portion Outer perimeter: The axis of the mandrel and the aforementioned riveting foot are described by the flange, and formed at a position equal to the thickness of the locked structure (5) (5) 200404127 ^ or slightly deviated from the position in the circumferential direction: In the core pulling rivet, when the mandrel is pulled, the mandrel head == expands and deforms from the end. At this point, the starting point of the diameter expansion is the rivet nail, Guang Jun No. 2: Zhougou. Therefore, regardless of whether or not the members are locked-the arch diameter is only started from the perimeter. By fighting with the locked component, # 门 / 再 < position. It is also locked by Μ 杜 # or slightly above it, so the arch diameter part is connected to the component day. "The arch diameter part will expand to a sufficient diameter relay effect and d, almost all occur as a vertical pressure formation." Connection: large, so the locked member will not be damaged, and the rivet body shaft portion of the rivet can be two; No: equipped with the step of making the core-drawing only 3, # π ^ into the wall of the length And equipment, pure and sigma grooves are formed at predetermined positions on the outer peripheral surface of the shaft portion of the rivet body, so its manufacturing is simple, and core rivets can be provided at a low price. Second, the inclined surface of the head of the rivet is formed into a conical shape. In addition, the aforementioned peripheral groove is simply formed in the rivet body on the outer periphery of the shaft portion. [Embodiment] Table: = Explains one embodiment of the present invention. Core rivet rivet in Figure 1 = Medium ’Core rivet 1 has a hollow metal rivet: 'body: 3;: 1 and Figure 2 Axis comparison:, ,, good clothes k, rivet body 2 is made of aluminum. 200404127 ⑻, the rivet body 2 is composed of the shaft portion 5 and the large-diameter flange 6 at one end of the shaft portion 5. The whole is formed hollow and is formed to accommodate the mandrel 3. The end portion 7 of the shaft portion of the rivet body on the opposite side of the flange 6 Opening. In the rivet body 2 shown in the figure, the flange 6 is formed in a circular shape, and the shaft portion 5 is formed in a rounded cylindrical shape. As shown in FIG. I and FIG. 2, the mandrel 3 is formed by a shaft portion 9 which is much longer than the nail body shaft 彳 5 and a head 邛 10 which is larger than the end portion 7 of the nail body shaft portion $. The boundary portion between the head portion 10 and the shaft portion 9 is formed by a part that is smaller than the other shaft portion, Guan Qiubali, and a razor blade 11. The separated part 11 of the small diameter is any position, but when it is formed at the position shown in the implementation form, since the separated mandrel 3 can be recovered in the recovery box of the locking tool, most of the mandrel 3 can be recovered. It is possible to maintain a high recovery rate. The mandrel shaft portion 9 is formed with a second small portion 13 'having a small diameter, which is adjacent to the divided portion u and has a larger diameter than the divided portion, but has a smaller diameter than the other #axis shaft 邠 portion. The length of the mandrel shaft portion 9 is from the rivet body flange 6: two? The length of the protruding part forms a gripping member that can be fully gripped on the locking tool (not shown.) And the tip is formed to be sharp to facilitate the insertion of the locking tool. The invention +, the mandrel head 10 forms an inclined surface with the rivet body-the inclined surface starts from The large-diameter portion that is specific to the shaft portion of the willow needle body is a separate part in the shape of the shaft portion of the rivet body. The inclined surface is any tone shaft but can be easily formed by forming a conical shape. However, the cone The second shape may also be formed from the large-diameter portion to the center of the mandrel shaft :: angled. When the mandrel shaft portion is strongly pulled by the inclined surface 14 ~, the shape will cause the end portion 7 to expand and deform. The main shaft portion 5 and the outer peripheral surface of the shaft portion 5 of the ㈣ body 2 are formed along the flange 6 at positions such as the locked structure 200404127 ⑺ or slightly deviated therefrom. The fixed position of the outer peripheral surface of the shaft portion of the body is simply formed by rolling or drawing. The quotient is set so that the shaft portion of the rivet is stronger than it = 15, and is regarded as the shaft portion of the rivet needle body. 5 Expanded variable rivets ^ Kemei member 2 second locked member structure 1 lock Γ1Γ member At this time, only the first plate that is locked by the first locked Wumeidi 2 and the combined thickness of the broken connecting members is formed at a position deviating from the flange 6. The shape of these locked members = the rivet body shaft received Part 5 :: In the state of the connecting member, insert the blind rivet ;; For the front end, insert the shaft part 5 of the rivet body 2 into the locked structure 1 and insert it into the A & A edge 6. The insertion The rivet can be pulled by hand, and the shape can also be maintained at the lock shaft of the core rivet 1 of the rivet 1. The ΓΓ core rivet 1 is kept in the state when the rivet 1 is held in the locking tool. When the ΓΓ1 is inserted into the mounting hole, In the part of the shaft portion 9 of the mandrel 3 = the state of the front end of the locking tool, the locking tool is moved, and the core 9 is pulled strongly to the extent that the ❹㈣㈣ is separated. # ≪ 7 邛 4 The inclined surface 14 of the shaft head 10 will cause Deformation of the rivet body shaft-side diameter expansion 'This deformation will reach the part of the peripheral groove 15 of the rivet body shaft portion 5. Xishan Heshan ".. r Ｍ 私 中' is fully expanded in the rivet body diameter expansion portion = Set the position of the perimeter groove in the manner of M connecting the locked members. At this time, riveting: the endurance of the body and the endurance of the locked members are added, Compared with the front end of the flange 61, the part of the shaft part of the nail body is hardly deformed. Because of A, the core rivet 1 -11-200404127 Description of the invention The thickness of the shaft body part 5 of the rivet pin on the continuation page is in the thickness of the locked member Parts (peripheral groove i5 and flange ^. Trowel) will not be expanded and deformed, which can avoid strong arch force on the locked member. Therefore, even if the locked member is a thin plastic member, it will open ^ The stress also hardly acts on the member, and it will not cause cracks or white marks on the locked structure. ^, Suppose that the cracked or white marks are caused by the deformation of the locked member due to the vertical force. The mandrel splitting force can be reduced by reducing the stern force. In addition, since the shaft portion of the rivet body at the end 4 and 7 sides is expanded and deformed with a very low force from the peripheral groove, it can be reliably locked. Pick up. Then, since the peripheral groove can be formed only in the shape of the mandrel head of the core rivet and the shaft portion of the rivet needle body, the manufacture is also simple, and the core rivet can be provided at a low cost. Referring to Fig. 3 to Fig. 7 and a comparative example, an example of actual implementation will be described. FIG. 3 (A) shows a $ core rivet related to a comparative example in which a peripheral groove is not formed on the shaft portion of the rivet body, and FIG. 3 (B) shows a related aspect of the present invention in which a peripheral groove 15 is formed. Figures 5 to 7 of the nails also indicate that the core of each figure is a core pulling of a comparative example, and P 'D— (B) of each figure is a core pulling rivet related to the embodiment of the present invention. The material of the core rivet that has been implemented is that the rivet body is aluminum alloy, and the mandrel is made of hard steel wire. In addition, the length of the shaft portion of each rivet body is "band, the flange is round with a straight 6.4 mm, and the thickness is 0.9 mm. The position of the circumferential groove is formed at a position 4.0 plane from the flange surface. In the embodiment of the present invention, a circle f ^ is formed, but a circumferential groove is not formed in the comparative example. The length of the shaft ridge portion of the mandrel protruding from the flange is 26 mm, and the inclined surface of the mandrel head is inclined to the rivet body. The end face of the end of the shaft portion is set to about 30 degrees. These dimensions are used as a reference for the present invention. The present invention is not intended to be limited to this. (9) (9) 200404127 The chart in Figure 4 is not locked. The characteristic curve (solid line) of the stroke length (color) of the comparative example for the core pulling rivet to the mandrel pulling force (kN), and the known stroke length (coffee) of the core pulling rivet related to the locking of the invention ㈣) characteristic curve (dotted line). By slowly pulling the mandrel by the locking tool, at a place close to 5 mm over 4 sides, the pulling force drops sharply and separates at the separated part, indicating that the Wucheng locking operation is performed. The maximum tensile force when cutting is between 2⑽ and the degree of privacy. The core rivet is set to be relatively weak. The force is separated. In the chart, the stroke length indicated by C is the difference between the stroke length of the core pulling rivet of the comparative example and the pulling length of the present invention. The graph in Figure 4 is borrowed by the core pulling rivet of the present invention: = core rivet short The length of the stroke is separated, that is, the lock is used as a 邛. The short part of 王 U Wang indicates that the head of the mandrel does not extend into the rivet body shaft at the ° point of the graph of the rivet body shaft. For example, the core rivet is shown in Figure 22, the locking member 17 related to the present invention is a plastic member. Pull the mandrel to point D in the diagram in Figure 4, the inclined surface of the head of the mandrel will cause the rivet 4 to be too close to the side. The deformation of the enlarged diameter causes the shaft of the rivet body to deform smoothly from the end side. For example, Γ knows that the deformation is caused by the square of the peg into the chess piece% Γ For the locked members that are easy to break. In contrast, ⑻irv is formed at In the cored rivets related to the expansion and change of the locked member applying a strong chess force, the rivet body shaft < k-shaped is deformed to this part of the rivet, where it becomes one :: The shaft part of the rivet needle body on the flange side is hardly deformed. -13- 200404127 (ί ο) Relative & In the comparative example, 'the mandrel head is moved from a position in the perimeter of the ditch to a cow extension = the rivet body shaft' causes the locked structure :: Figure 6 shows the lock at point e in the graph of Figure 4 The rivet pin is in a deformed state after being connected. Figure 6 (A) Surface dry ^ point 丨 7 1 body shaft opening p expansion 1) The core rivet of the comparative example is shown, (B) indicates that the rivet is too relevant Core rivet pin. Figure 6 (B) shows the core rivet ^ The thickness of the locked member is hardly deformed to avoid strong arching force. At the same time, from the perimeter groove, the rivet on the end side is pulled out and broken. The state of white marks. On the other hand, in the nailing of the comparative example in Fig. 6 (a), the shaft portion of the rivet body will also deform sharply in the thickness of the locked member. ° The shaft portion of the riding body on the right is locked. Component thickness parts: 7 (A) and (B) are the t-views of the core- pull rivets after the locking of Fig. 6 (a) and (b) are viewed from the upper part. Fig. 7 (A) shows that the pumping unit τ in the comparative example breaks in the plastic locking member 18. In contrast, FIG. 7 (B) shows the irritated willow needle of the present invention. It is learned that the plastic material is locally locked on the plastic locked member 17 without causing cracks or white marks.
^此，、本發明之抽芯鉚釘可確實地鎖接在被鎖接構件而 不會造成破裂、白痕。 [發明功效] 依據本發明，由於拉動芯軸時，鉚釘本體軸部係以鉚釘 本體軸部之周溝部分為起點而發生擴徑㈣，幾乎不會超 出其以上而對凸緣側之鉚釘本體軸部部分發生擴徑變形作 2，因此可避免對被鎖接構件發生強大鎖接力作用，且， ^周溝起，可確貫地鎖接端部側之鉚釘本體軸部，使該抽 -14- 200404127 芯鉚釘之鉚釘本體軸部不須呈 …^ 驟及設傷，純粹僅在鉚釘本體㈣==長度之薄壁之步 周溝即可，其製造簡單， 周面之所定位置形成 [圖式簡單說明] 了用低價提供抽芯鉚釘。 圖1係本發明之一種實施^ The core rivet of the present invention can be reliably locked to the locked member without causing cracks and white marks. [Effects of the Invention] According to the present invention, when the mandrel is pulled, the rivet body shaft portion expands from the circumferential groove portion of the rivet body shaft portion as a starting point, and the diameter is enlarged. The shaft part undergoes a diameter expansion deformation of 2. Therefore, a strong locking force can be prevented from occurring on the member to be locked, and ^ around the groove, the shaft portion of the rivet body on the end side can be reliably locked, making the pumping- 14- 200404127 The shaft of the rivet body of the core rivet does not need to be… ^ Steps and injuries, it is purely only in the thin perimeter groove of the rivet body ㈣ == length, its manufacturing is simple, and the predetermined position of the peripheral surface is formed [ Brief description of the drawing] The core rivet is provided at a low price. Figure 1 is an implementation of the invention
，且係鉚釘本體之半截面示意圖：相關之抽芯鉚釘前視S 圖2係圖i之抽芯鉚針所使用之芯轴前視圖。 圖3(A)係鉚釘本體軸部未形And it is a half cross-sectional schematic diagram of the rivet body: the front view of the relevant cored rivet S Figure 2 is a front view of the mandrel used in the cored rivet pin of Figure i. Figure 3 (A) The shaft of the rivet body is not shaped
抽芯鉚釘部分前視圖，(B)係鉚釘本體軸 所相關之抽芯鉚針部分前視圖。 之本發明 圖4係鎖接圖3⑷比較例所相關之抽&鉚釘 轴拉力_之特性曲線(實線)，和鎖接圖』 所不之本务明所相關之抽芯鉚釘時 軸拉力_之特性曲線（虛線）之示意圖。長度（_)對芯 圖5係抽芯鉚針截面圖，表示圖4之圖表之d點中的柳釘 本體軸部擴徑變形狀態，（A)為比較例之抽芯鉚釘，（B)為 本發明所相關之抽芯鉚釘示意圖。 … 抽芯鉚釘鎖接完成後狀態之 釘之鉚釘本體軸部擴徑變形 關之抽芯鉚釘之鉚釘本體轴Front view of the part of the core rivet, (B) is the front view of the part of the core pin related to the shaft of the rivet body. Figure 4 of the present invention is the characteristic curve (solid line) of drawing & rivet shaft tension_ related to the comparative example of Fig. 3 锁 comparative example, and the drawing of the shaft is related to the core drawing rivet which is related to the locking diagram. _ The schematic diagram of the characteristic curve (dashed line). Length (_) for core Figure 5 is a cross-sectional view of a cored rivet pin, which shows the enlarged diameter and deformation state of the shaft portion of the rivet body at point d in the graph of Figure 4. (A) is a cored rivet of a comparative example, (B) This is a schematic diagram of a core rivet related to the present invention. … The diameter of the rivet body shaft of the rivet body after the core rivet is locked is enlarged and the diameter of the rivet body shaft of the rivet is closed
圖6係圖4之圖表之e點中的 示意圖，（A)為比較例之抽芯鉚 狀態截面圖，（B)為本發明所相 部擴徑變形狀態截面圖。 圖7(A)係從上部看圖6(A)比較例之抽芯鉚釘之俯視圖， (B)係從上部看圖6(B)本發明所相關之抽芯鉚釘之俯視圖。 -15- 200404127 發明說明續頁 (12) [圖式代表符號說明] 1 抽]1卵釘 2 鉚釘本體 3 芯軸 5 鉚釘本體軸部 6 凸緣 7 與凸緣反側之鉚釘本體軸部之端部 9 芯軸軸部 10 芯軸頭_部 11 分開部分 13 第2小徑部分 14 頭部之斜面 15 周溝 17 塑膠製被鎖接構件 18 破裂 -16-Fig. 6 is a schematic view at point e in the graph of Fig. 4, (A) is a cross-sectional view of a core-pulling riveting state of a comparative example, and (B) is a cross-sectional view of a diameter expanding and deforming state of the present invention. FIG. 7 (A) is a top view of the core rivet of the comparative example of FIG. 6 (A) viewed from the upper part, and (B) is a plan view of the core rivet of the present invention related to FIG. 6 (B) viewed from the upper part. -15- 200404127 Description of Invention Continued (12) [Description of Representation Symbols of the Drawings] 1 Draw] 1 Egg nail 2 Rivet body 3 Mandrel 5 Rivet body shaft portion 6 Flange 7 and the shaft portion of the rivet body on the opposite side of the flange End part 9 Mandrel shaft part 10 Mandrel head _ part 11 Divided part 13 Second small diameter part 14 Slope of the head 15 Perimeter groove 17 Plastic locking member 18 Rupture -16-