201244848 六、發明說明： 【發明所屬之技術領域】 本發明係關於一種盲鉚釘緊固裝置，尤其關於一種位於 盲鉚釘緊固裝置之前端部之頭件。 【先前技術】 盲鉚釘緊固裝置包括：中空之頭件罩（nose housing)，其 用以收容盲柳釘；頭件（nosepiece)，其設置於頭件罩之前 端且包含用以***盲鉚釘之芯軸之插通孔；顎夾套（jaw case)，其與頭件之後方鄰接且可前後移動地設置於頭件罩 内，並具有以内徑朝向前端變小之方式形成之内周面；顎 夾（jaw) ’其以夾持***至插通孔之盲鉚釘之芯軸之方式設 置於顎夾套内’且具有可滑動地與顎夾套之内周面接觸之 外周面；及顎夾推進器（jaw pusher)，其與顆夾之後方鄰接 地設置於頭件罩内，且將顎夾向前方推壓；藉由使顎夾套 相對於插通孔向後方移動而縮小顎夾之内徑，使顎夾夾持 盲鉚釘之芯轴，進而於夾持芯軸之狀態下使顎夾套及顎夾 向後方移動，藉此切斷盲鉚釘之芯軸，而利用盲鉚釘之鉚 釘本體將被緊固構件緊固。 為藉由盲鉚釘緊固裝置將盲鉚釘緊固於被緊固構件，而 將盲鉚釘之芯軸***至緊固裝置之頭件之插通孔中，且將 鉚釘本體安裝成自頭件突出之狀態’於此狀態下以將鉚釘 本體***至被緊固構件之安裝孔中之方式定位緊固裝置， 繼而使緊固裝置進行動作，將芯轴以使其斷裂之程度強力 拔出，使鉚釘本體之套管膨大變形而將盲鉚釘緊固於被緊 I62850.doc 201244848 收隹於。斷裂之芯軸係向盲鉚釘緊固裝置之後方排出並 、；收集器中。此時，顎央套恢復至原始位置以安裝下 古：盲鉚釘。此時’因顎央為保持有斷裂芯軸之狀態，故 芯轴之一部分會自頭件突出。因此，於空油麗式緊固 :中ϋ由氣麼抽吸斷裂芯轴並將其向後方排出。又， ，置有用以防止鉚釘***時之脫落之保持機構。於空油壓 $置中作為該鉚釘保持機構，通常使用藉由氣麼 行之抽〇及《而，因於保持期間始終需要氣麼而不經 濟。又’於電動式緊固裝置中，由於難以產生抽吸力，故 而必需以其他方法進行保持。 根據先前之技術，作為保持鉚釘之機構，存在頭件之盲 鉚釘插通孔巾安裝有可㈣地對f鉚釘之4進行彈性保 持之彈性環者（專利文獻丨）。 又，作為保㈣釘之機構，存在如下者：包括抵接於所 ***之鉚釘之芯軸而卡止鉚釘之芯軸之卡止機構，且該卡 止機構包含以自頭件之外周面到達插通孔之方式設置之插 入孔、***至***孔中之螺栓、及推壓螺栓頭之彈性環 (專利文獻2)。 進而，作為保持鉚冑之機肖，存在藉由氣Μ抽吸保持柳 釘者（專利文獻3)。 [先行技術文獻] [專利文獻] [專利文獻1]曰本專利特開平6-262290號公報 [專利文獻2]曰本專利特開2008-168324號公報 162850.doc 201244848 [專利文獻3]曰本專利實公昭55-38603號公報 【發明内容】 [發明所欲解決之問題] 專利文獻1及2之鉚釘保持機構中，由於彈性環係自頭件 之外周面朝向插通孔對盲鉚釘之心轴垂直地施加彈性力， 故而施加於向***方向移動之盲鉚釘之彈性力與施加於向 與***方向為相反方向移動之盲鉚釘上之彈性力相同。因 此，雖可於***時保持鉚釘，但於緊固後則無法防止芯軸 之犬出》若為防止芯軸之突出而增大彈性力，則鉚釘之插 入變得困難。又，於專利文獻3中，由於係藉由氣壓抽吸 保持鉚釘，故而不經濟。 又，無淪是任一者之專利文獻之技術，其目的均僅為保 持鉚釘，而未將防止突出作為目的。若僅有鉚釘保持功 能，則於緊固後會頻繁地產生芯轴之突出。若於芯軸突出 之狀態下保持鉚釘，則存在難以安裝下一個鉚釘之課題。 因此，本發明之目的在於提供一種可容易地將盲鉚釘插 入頭件内且可保持該鉚釘於安裝前不脫落，並防止緊固後 之斷裂芯軸之突出的盲鉚釘緊固裝置。 [解決問題之技術手段] 成上述目的，根據本發明，提供一種盲鉚釘緊固裝 置π其包括.中空之頭件罩，其用以收容盲鉚釘；頭件， 访、又置於頭件罩之前端，且具有用以插人盲鉚釘之芯轴之 =孔；顎夾套’其與頭件之後方鄰接，可前後移動地設 ;頊件罩内，並具有以内徑朝向前端變小之方式形成之 162850.doc 201244848 内周面’顆夾其以夾持插人至插通孔之盲鉚釘之芯轴之 方式設置於顎夾套内，且具有可滑動接觸於顎夾套之内周 面接觸之外周® ;及韻失推進器，其與顆夾之後方鄰接而 設置於頭件罩内，且將顎失向前方推壓；#由使顎夾套相 對於插通孔向《方移動而縮小㈣之内徑，使帛爽爽持盲 鉚釘之芯軸，進而於夾持芯軸之狀態下使顎夾套及顎失向 後方移動，藉此切斷盲鉚釘之芯軸，而利用盲鉚釘之鉚釘 本體將被緊固構件緊固；該盲鉚釘緊固裝置之特徵在於， 其包括：孔穴，其設置於形成上述頭件之插通孔之内壁； 卡止機構，其收容於該孔穴中；及推壓機構，其自頭件之 外壁朝向内壁彈性地推壓上述卡止機構，使卡止機構之一 β分自内壁向插通孔突出；上述孔穴自上述内壁朝向外壁 相對於插通孔向斜後方延伸，且上述孔穴之向插通孔開口 之前端係以上述卡止機構向插通孔突出但不會脫出之方式 狹窄地形成。 根據本發明之實施形態，上述卡止機構可為球狀構件、 圓柱狀構件或螺栓狀構件，上述球狀構件可為鋼珠。又， 上述推壓機構可為彈性環或彈簧，上述彈性環可為〇型環。 [發明之效果] 根據本發明，由於收容卡止機構之孔穴係自頭件之内壁 朝亡外壁相對於插通孔向斜後方延伸，故而卡止機構藉由 向***方向移動之盲鉚釘之芯軸之前端可容易地向斜後方 移動。與此相對，對於向***方向之相反方向移動之芯 轴’卡止機構之向斜後方之移動變得困難，因此芯轴之移 1628S0.doc 201244848 動被卡止機構實質地阻止。即，緊固後之芯軸將卡止機構 上推所需之力大於***之芯軸將卡止機構上推所需之力。 因此，根據本發明’可容易地將盲鉚釘***頭件内，且可 保持***之盲鉚釘不會自緊固裝置脫落。又，由於緊固後 之芯軸將卡止機構上推所需之力大於緊固後由顎夾所保持 之芯軸打開該顎夾所需之力，故而可防止緊固後之芯軸之 突出。若芯軸咬住顎夾、因而打開顎夾所需之力變得過大 之清形時，卡止機構只要自芯轴被施加較大之力，即可於 孔穴内向斜後方移動，故而緊固後之芯軸可將卡止機構上 推。因此，緊固後之芯軸會自頭件突出，故而不會破壞緊 固裝置。 ' 【實施方式】 以下，-面參照圖式—面對本發明之—實施形態進行說 明。圖1係表示本發明之一實施形態之盲鉚冑緊固裝置之 整體之剖。X ’圖2及圖3係表示圖以盲柳釘緊固裝 置之前端部之部分剖面圖。 如該等圖所示’於盲鉚釘緊固裝置i之前端部設置有用 以收容盲鉚釘之中空之頭件罩2，於頭件罩2之前端設置有 頭件3 1件3具有用以***盲柳釘4之芯轴5之_孔6。 如圖2所示1鉚釘4以鉚釘本體及芯軸5構成，而頭件3 係如圖3所不般’以利用頭件3之前端擋住鉚釘本體钝而僅 將芯轴5收容於插通孔6中之方式構成1失套7與頭件以 後方鄰接而設置於頭件罩2内。顆夹套7可前後移動，且具 有以内徑朝向前端變小之方式形成之内周自。於顎爽套7 162850.doc 201244848 内設置有用以夾持自頭件3之插通孔6***之盲鉚釘4之芯 軸5的顎夾8。顎夾8具有可滑動接觸於顎夾套7之内周面之 外周面。顎夾推進器9與顎夾8之後方鄰接而設置於頭件罩 2内。顎夾推進器9將顎夾8向前方推壓，使其與顎夾套7之 内周面接觸。 如圖2及圖3之放大部分剖面圖所示，於形成頭件3之插 通孔6之内壁設置有孔穴1〇，於該孔穴中收容有鋼珠u。 於頭件之外壁呈環狀地設置有凹槽13，且其一部分面向孔 穴10。於該凹槽13中設置有〇型環12，該〇型環12自外壁 朝向内壁彈性地推壓鋼珠U，使鋼珠丨丨之一部分自内壁向 插通孔突出。如箭頭A所示，孔穴1〇自上述内壁朝向外壁 相對於插通孔向斜後方延伸。藉由該構造，鋼珠u被盲鉚 釘4之芯轴5上推時，可如箭頭B所示般於孔穴中向斜後方 移動。 其次，一面與先前之空油壓式盲鉚釘緊固裝置之動作進 行對比，一面對本發明之一實施形態之盲鉚釘緊固裝置之 動作進行說明。 圖4及圖5係用以分別對本發明之一實施形態之盲柳釘緊 固裝置及先前之空油Μ式盲斜p釘緊固$置之動作進行說明 的與圖2相同之部分剖面圖。於圖4及圖5中，（a)、⑺）、 (C)、（D)、（Ε)分別表示盲鉚釘緊固裝置之盲鉚釘安裝前之 處於原始位置之狀態、盲鉚釘安裝時之狀態、盲鉚釘緊固 時之狀態、為進行下一個緊固作業而恢復至原始位置時之 狀態、及芯軸排出時之狀態。 162850.doc 201244848 首先，對本發明之一實施形態之盲鉚釘緊固裝置之動作 進行說明，於圖4(A)中，盲鉚釘緊固裝置處於原始位置， 於該原始位置，為使盲鉚釘容易***，顎夾套7位於頭件 罩2之前方，顎夾8抵接於頭件3之後端部而無法向前方移 動，且顎夾8之内徑變得較大。此時，鋼珠丨丨被〇型環丨之彈 性地推壓，其一部分突出至頭件3之插通孔6内。 於圖4(B)中，將盲鉚釘4之芯軸5自插通孔6***並將芯 軸5收容於内徑變大之顎夾8之間。此時，藉由***之芯轴 5將鋼珠11上推’鋼珠11如箭頭c所示般於孔穴1〇中自頭件 3之内壁朝向外壁而向斜後方移動。於該構造中，自芯軸5 之移動方向來看鋼珠11可向斜前方向移動，因此可以較輕 之力***芯軸5。由於利用〇型環對鋼珠丨丨施加有彈性力， 故而藉由鋼珠11保持***之芯軸5。 於圖4(C)中’向後方驅動顎夾套7，藉此顎夾8之内徑變 小’顎夾8夾持芯軸5，若於此狀態下進一步向後方驅動顎 夾套7，則將芯軸5向箭頭D之方向拉拽而使鉚釘本體之套 管膨大變形，將盲鉚釘4緊固於被緊固構件後，芯軸5斷 裂。若芯轴5斷裂，則鋼珠11恢復至圖4(A)所示之位置， 因此鋼珠11之一部分向插通孔6内突出。 於圖4(D)中，為進行下一個緊固作業，顎夾套7如箭頭e 所示般向前方移動。此時’由於斷裂之芯軸5係於由顎夾8 夾持之狀態下向前方移動，故而會抵接於向插通孔6内突 出之鋼珠11。由於怒軸將鋼珠11上推所需之力大於由顎夾 8所夾持之芯轴5打開該顆夾8所需之力，故而芯轴5向前方 162850.doc 201244848 之移動被鋼珠11阻止’而如箭頭F所示般向後方被推回。 於圖4(E)中’藉由***下一個盲鉚釘4而將斷裂之芯軸5 向後方推入，繼而重複圓4(b)至圖4(E)之步驟》 其次’對先前之空油壓式盲鉚釘緊固裝置之動作進行說 明’於圖5(A)中’盲鉚釘緊固裝置處於原始位置，於該原 始位置，顎夾套7位於前方，顎夾8被推壓至頭件後端部， 且顎夾8之内徑變大。 於圖5(B)中’將盲鉚釘4之芯軸5自插通孔6***並將芯 軸5收容於内徑變大之顎夾8之間。於該狀態下***有盲鉚 釘4 ’***之芯軸5係與圖4(B)不同地藉由利用氣壓之抽吸 作用而保持於插通孔6内。 於圖5(C)中’向後方驅動顎夾套7,藉此顎夾8之内徑變 小’顆夾8夾持芯軸5 ’若於此狀態下向後方驅動顎夾套 7’則將芯轴5向箭頭D之方向拉拽而使鉚釘本體之套管膨 大變形’將盲鉚釘4緊固於被緊固構件後，芯軸5斷裂。 於圖5(D)中’顎夾套7如箭頭E所示般向前方移動。此 時’由於斷裂之芯軸5係於由顎夾8夾持之狀態下向前方移 動’故而與圖4(D)不同地，芯軸5暫時向前方突出。 其後’於圖5(E)中，顎夾套7向前方移動而恢復至圖 5(A)所示之原始位置，顎夾8抵接於頭件後端部而内徑變 大，從而芯軸5自顎夾8脫離。不同於圖4(E)，突出之芯轴 5係藉由利用氣壓之抽吸作用而向後方移動並排出。 【圓式簡單說明】 圖1係表示本發明之一實施形態之盲鉚釘緊固裝置之整 162850.doc • 10· 201244848 體之剖面囷。 圖2係表示圖丨之盲鉚釘緊固裝置之前端部分及***前之 盲鉚釘的圖1之放大部分剖面圖。 圖3係表示圖2之盲柳釘緊固裝置中***有盲柳釘之狀態 的放大部分剖面圖。 圖4係表示本發明之一實施形態 作的斑阁1+ ¥鲫釘緊固裝置之動 作的與圖1相同之部分剖面圖。 緊^固装置之動作的與 【主要元件符號說明】 圖5係表示先前之空油壓式盲鲫釘 圖4相同之部分剖面圖。 1 盲鉚釘緊固裝置 2 頭件罩 3 頭件 4 盲鉚釘 4a 鉚釘本體 5 芯軸 6 插通孔 7 顎夾套 8 顎失 9 顆夾推進器 10 孔穴 11 鋼珠 12 〇型環 13 凹槽 162850.doc201244848 VI. Description of the Invention: [Technical Field] The present invention relates to a blind rivet fastening device, and more particularly to a head member located at a front end of a blind rivet fastening device. [Prior Art] A blind rivet fastening device includes: a hollow nose housing for receiving a blind rivet; a nosepiece disposed at a front end of the head cover and including a blind rivet for insertion a through hole of the mandrel; a jaw case which is disposed adjacent to the rear of the head piece and is movable back and forth in the head cover, and has an inner peripheral surface formed to have a smaller inner diameter toward the front end a jaw that is disposed in the jaw sleeve in a manner that clamps a mandrel inserted into the blind rivet of the insertion hole and has a circumferential surface that slidably contacts the inner circumferential surface of the jaw sleeve; a jaw pusher, which is disposed adjacent to the rear of the clip in the head cover, and pushes the clip forward; and reduces the jaw by moving backward with respect to the insertion hole The inner diameter of the clip is such that the jaw clamps the mandrel of the blind rivet, and then the jaw and the jaw are moved rearward in the state of clamping the mandrel, thereby cutting the mandrel of the blind rivet and using the blind rivet The rivet body will be fastened by the fastening member. To fasten the blind rivet to the fastened member by the blind rivet fastening device, insert the mandrel of the blind rivet into the insertion hole of the head piece of the fastening device, and install the rivet body to protrude from the head piece In this state, the fastening device is positioned such that the rivet body is inserted into the mounting hole of the member to be fastened, and then the fastening device is operated to strongly pull out the mandrel to the extent that it is broken. The casing of the rivet body is inflated and the blind rivet is fastened to the tightened I62850.doc 201244848. The broken mandrel is discharged to the blind rivet fastening device and in the collector. At this point, the shackle is restored to its original position to install the next: blind rivets. At this time, a part of the mandrel protrudes from the head piece because the state of the core is maintained. Therefore, in the air oil type fastening: the middle jaw is sucked by the air to break the mandrel and discharge it to the rear. Further, a holding mechanism for preventing the rivet from falling off when inserted is provided. For the rivet holding mechanism, the rivet holding mechanism is usually used for squeezing by gas and "and because the gas is always required during the holding period, it is not economical." Further, in the electric fastening device, since it is difficult to generate the suction force, it is necessary to hold it by other methods. According to the prior art, as a mechanism for holding the rivet, the blind rivet insertion burr having the head piece is provided with an elastic ring capable of elastically holding the f rivet 4 (Patent Document 丨). Further, as a mechanism for securing the nail, there is a locking mechanism including a mandrel that abuts against a mandrel of the inserted rivet and locks the rivet, and the locking mechanism includes the outer peripheral surface of the self-heading An insertion hole provided in a through hole, a bolt inserted into the insertion hole, and an elastic ring that presses the bolt head (Patent Document 2). Further, as a mechanism for holding the riveting, there is a person who holds the rivet by suction of the air (Patent Document 3). [Patent Document 1] [Patent Document 1] Japanese Patent Laid-Open No. Hei 6-262290 (Patent Document 2) Japanese Patent Laid-Open Publication No. 2008-168324 No. 162850.doc 201244848 [Patent Document 3] [Problem to be Solved by the Invention] In the rivet holding mechanism of Patent Documents 1 and 2, since the elastic ring is from the outer peripheral surface of the head member toward the insertion hole to the center of the blind rivet The shaft exerts an elastic force perpendicularly, so that the elastic force applied to the blind rivet moving in the insertion direction is the same as the elastic force applied to the blind rivet moving in the opposite direction to the insertion direction. Therefore, although the rivet can be held at the time of insertion, it is impossible to prevent the mandrel of the mandrel after fastening. If the elastic force is increased to prevent the protrusion of the mandrel, the insertion of the rivet becomes difficult. Further, in Patent Document 3, since the rivet is held by air pressure suction, it is not economical. Further, innocent is the technique of any of the patent documents, and the purpose thereof is only to maintain the rivet, and the purpose of preventing the protrusion is not made. If only the rivet retains the function, the protrusion of the mandrel is frequently generated after tightening. If the rivet is held while the mandrel is protruding, there is a problem that it is difficult to mount the next rivet. SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a blind rivet fastening device which can easily insert a blind rivet into a head member and which can prevent the rivet from falling off before installation and prevent protrusion of the broken mandrel after fastening. [Technical means for solving the problem] In the above object, according to the present invention, there is provided a blind rivet fastening device π which comprises a hollow head cover for receiving a blind rivet; a head piece, an access, and a head cover The front end has a hole for inserting a mandrel of a blind rivet; the 颚 ferrule 'is adjacent to the rear of the head piece and can be moved forward and backward; the inside of the 罩 罩 , has a smaller inner diameter toward the front end Forming the 162850.doc 201244848 inner peripheral surface 'slips are placed in the 颚 ferrule in the manner of clamping the mandrel inserted into the blind rivet of the through hole, and have an inner circumference slidably contacting the 颚 ferrule Surface contact outer circumference®; and rhyme loss propeller, which is placed adjacent to the rear of the clip and placed in the head cover, and pushes the smash to the front; #由使颚套向插孔孔向方方Moving and narrowing the inner diameter of (4), so that the core of the blind rivet is refreshed, and then the jaw and the cymbal are moved backwards in the state of clamping the mandrel, thereby cutting the mandrel of the blind rivet, and Fastening the fastened member with a rivet body of a blind rivet; features of the blind rivet fastening device The method includes: a hole disposed in an inner wall of the insertion hole forming the head member; a locking mechanism received in the hole; and a pressing mechanism elastically pushing the outer wall from the outer wall of the head member toward the inner wall The locking mechanism causes one of the locking mechanisms to protrude from the inner wall toward the insertion hole; the hole extends obliquely rearward from the inner wall toward the outer wall with respect to the insertion hole, and the hole is open to the front end of the insertion hole The locking mechanism is formed to be narrowly formed so as to protrude into the insertion hole but does not come out. According to an embodiment of the present invention, the locking mechanism may be a spherical member, a cylindrical member or a bolt-like member, and the spherical member may be a steel ball. Further, the pressing mechanism may be an elastic ring or a spring, and the elastic ring may be a 〇-shaped ring. [Effects of the Invention] According to the present invention, since the hole for accommodating the locking mechanism extends obliquely rearward from the inner wall of the head member toward the outer wall of the head member with respect to the insertion hole, the locking mechanism is moved by the core of the blind rivet in the insertion direction. The front end of the shaft can be easily moved obliquely rearward. On the other hand, it becomes difficult to move the rearward of the mandrel's locking mechanism moving in the opposite direction to the insertion direction, so that the movement of the mandrel is substantially blocked by the locking mechanism. That is, the force required to push up the locking mechanism by the tightened mandrel is greater than the force required to push the locking mechanism up by the inserted mandrel. Therefore, according to the present invention, the blind rivet can be easily inserted into the head member, and the blind rivet which can be kept inserted does not fall off from the fastening device. Moreover, since the force required for the tightening of the mandrel to push up the locking mechanism is greater than the force required to open the jaw by the mandrel held by the jaw after tightening, the mandrel after fastening can be prevented. protruding. If the mandrel bites the clamp and the force required to open the clamp becomes excessively clear, the locking mechanism can be moved obliquely backward in the hole as long as a large force is applied from the mandrel, so that the fastening mechanism is fastened. The rear mandrel pushes up the locking mechanism. Therefore, the tightened mandrel protrudes from the head piece, so that the fastening device is not damaged. [Embodiment] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view showing the entire blind rivet fastening device according to an embodiment of the present invention. X' Fig. 2 and Fig. 3 are partial cross-sectional views showing the front end portion of the blind rivet fastening device. As shown in the figures, a hollow head cover 2 for receiving a blind rivet is provided at the front end of the blind rivet fastening device i, and a head piece 31 is provided at the front end of the head cover 2 for inserting The blind rivet 4 has a core 5 of 5 holes. As shown in Fig. 2, the 1 rivet 4 is composed of a rivet body and a mandrel 5, and the head piece 3 is not as shown in Fig. 3, so that the rivet body is blocked by the front end of the head piece 3, and only the mandrel 5 is received in the insertion. In the hole 6, the cover sleeve 7 is disposed in the head cover 2 so as to be adjacent to the rear portion. The jacket 7 is movable forward and backward, and has an inner circumference formed such that the inner diameter becomes smaller toward the front end. A clamp 8 for clamping the core shaft 5 of the blind rivet 4 inserted from the insertion hole 6 of the head piece 3 is provided in the 颚 颚 set 7 162850.doc 201244848. The jaw 8 has an outer peripheral surface slidably contacting the inner peripheral surface of the jaw cover 7. The jaw pusher 9 is disposed adjacent to the rear of the jaw 8 and is disposed in the head cover 2. The jaw pusher 9 pushes the jaw 8 forward to bring it into contact with the inner peripheral surface of the jaw 7 . As shown in the enlarged partial cross-sectional view of Fig. 2 and Fig. 3, a hole 1 is formed in the inner wall of the insertion hole 6 forming the head member 3, and the steel ball u is accommodated in the hole. A groove 13 is provided in an annular shape on the outer wall of the head piece, and a part thereof faces the hole 10. A 〇-shaped ring 12 is provided in the groove 13, and the 〇-shaped ring 12 elastically urges the steel ball U from the outer wall toward the inner wall, so that a part of the steel ball shank protrudes from the inner wall toward the insertion hole. As indicated by the arrow A, the hole 1〇 extends obliquely rearward from the inner wall toward the outer wall with respect to the insertion hole. With this configuration, when the steel ball u is pushed up by the mandrel 5 of the blind rivet 4, it can be moved obliquely rearward in the hole as indicated by the arrow B. Next, the operation of the blind rivet fastening device according to an embodiment of the present invention will be described in comparison with the operation of the prior air hydraulic blind rivet fastening device. 4 and FIG. 5 are partial cross-sectional views similar to FIG. 2 for explaining the operation of the blind rivet fastening device according to an embodiment of the present invention and the previous operation of the air slick blind p-nail fastening. . In FIGS. 4 and 5, (a), (7)), (C), (D), (Ε) respectively indicate the state in which the blind rivet of the blind rivet fastening device is in the original position before installation, and the blind rivet is installed. The state, the state when the blind rivet is tightened, the state when the blinding operation is restored to the original position, and the state when the mandrel is discharged. 162850.doc 201244848 First, the operation of the blind rivet fastening device according to an embodiment of the present invention will be described. In Fig. 4(A), the blind rivet fastening device is in the original position, and in the original position, the blind rivet is easy. Inserted, the 颚 ferrule 7 is located in front of the head cover 2, and the 颚 clip 8 abuts against the rear end portion of the head member 3 and cannot move forward, and the inner diameter of the cymbal holder 8 becomes larger. At this time, the steel ball cymbal is elastically pressed by the cymbal type ring, and a part thereof protrudes into the insertion hole 6 of the head piece 3. In Fig. 4(B), the mandrel 5 of the blind rivet 4 is inserted from the insertion hole 6 and the mandrel 5 is housed between the jaws 8 having an increased inner diameter. At this time, the steel ball 11 is pushed up by the inserted mandrel 5, and the steel ball 11 is moved obliquely rearward from the inner wall of the head piece 3 toward the outer wall in the hole 1 as indicated by an arrow c. In this configuration, the steel ball 11 can be moved in the obliquely forward direction from the moving direction of the mandrel 5, so that the mandrel 5 can be inserted with a light force. Since the elastic force is applied to the steel ball by the 〇-shaped ring, the inserted mandrel 5 is held by the steel ball 11. In Fig. 4(C), 'the cymbal sleeve 7 is driven rearward, whereby the inner diameter of the cymbal holder 8 becomes smaller', the cymbal 8 holds the mandrel 5, and if the yoke 7 is further driven rearward in this state, Then, the mandrel 5 is pulled in the direction of the arrow D to expand and deform the casing of the rivet body, and after the blind rivet 4 is fastened to the member to be fastened, the mandrel 5 is broken. When the mandrel 5 is broken, the steel ball 11 is restored to the position shown in Fig. 4(A), and thus a part of the steel ball 11 protrudes into the insertion hole 6. In Fig. 4(D), in order to perform the next fastening work, the 颚 jacket 7 is moved forward as indicated by an arrow e. At this time, since the broken mandrel 5 is moved forward while being sandwiched by the jaws 8, the steel ball 11 projecting into the insertion hole 6 is abutted. Since the force required to push the steel ball 11 up by the anger axis is greater than the force required to open the clamp 8 by the mandrel 5 held by the clamp 8, the movement of the mandrel 5 to the front 162850.doc 201244848 is blocked by the steel ball 11 'And pushed back to the rear as indicated by arrow F. In Fig. 4(E), the broken mandrel 5 is pushed backward by inserting the next blind rivet 4, and then the circle 4(b) is repeated to the step of Fig. 4(E). The operation of the hydraulic blind rivet fastening device will be described. 'In Fig. 5(A), the blind blind rivet fastening device is in the original position. In the original position, the 颚 ferrule 7 is located at the front, and the 颚 clamp 8 is pushed to the head. The rear end portion of the piece, and the inner diameter of the jaw 8 becomes large. In Fig. 5(B), the mandrel 5 of the blind rivet 4 is inserted from the insertion hole 6 and the mandrel 5 is housed between the jaws 8 having an increased inner diameter. The mandrel 5 into which the blind rivet 4' is inserted in this state is held in the insertion hole 6 by the suction of the air pressure, unlike FIG. 4(B). In Fig. 5(C), 'the cymbal sleeve 7 is driven rearward, whereby the inner diameter of the yoke 8 becomes smaller'. The yoke 8 holds the mandrel 5'. If the yoke 7' is driven rearward in this state, The mandrel 5 is pulled in the direction of the arrow D to expand the casing of the rivet body. When the blind rivet 4 is fastened to the member to be fastened, the mandrel 5 is broken. In Fig. 5(D), the 颚 clip 7 is moved forward as indicated by the arrow E. At this time, since the broken mandrel 5 is moved forward while being sandwiched by the jaws 8, the mandrel 5 temporarily protrudes forward unlike FIG. 4(D). Thereafter, in FIG. 5(E), the jaw 7 is moved forward to return to the original position shown in FIG. 5(A), and the jaw 8 abuts against the rear end portion of the head member and the inner diameter becomes large, thereby The mandrel 5 is detached from the jaws 8. Unlike Fig. 4(E), the protruding mandrel 5 is moved rearward and discharged by suction by the air pressure. [Circular Simple Description] Fig. 1 is a cross-sectional view showing a blind rivet fastening device according to an embodiment of the present invention, 162850.doc • 10·201244848. Figure 2 is an enlarged partial cross-sectional view of Figure 1 showing the front end portion of the blind rivet fastening device of the figure and the blind rivet before insertion. Fig. 3 is an enlarged partial cross-sectional view showing a state in which blind rivets are inserted into the blind rivet fastening device of Fig. 2. Fig. 4 is a partial cross-sectional view similar to Fig. 1 showing the operation of the zebra 1+ 鲫 nail fastening device according to an embodiment of the present invention. [Embodiment of the operation of the tightening device] Fig. 5 is a cross-sectional view showing the same portion of the previous air hydraulic type blind pin. 1 blind rivet fastening device 2 head cover 3 head piece 4 blind rivet 4a rivet body 5 mandrel 6 insertion through hole 7 颚 jacket 8 颚 lost 9 clamp thruster 10 hole 11 steel ball 12 〇 type ring 13 groove 162850 .doc