A7 A7 ，經 濟 郏 慧 財 局 M 赀 合 作 社 印 製 B7 五、發明説明（1 ) [發明領域] 本發明為關於保護電路之斷路器，尤其關於其基座與 外蓋之組合構成。 [以往技術丨 以往之技術依據第4圖至苐9圖說明。 第4圖為表示於日本之實開平5-66857號公報之斷路 器之基座與外蓋之組合前之狀態之透視圖，第5圖為第4 圖之A-A線剖視圖，第6圖為第4圖所示斷路器之主要部 分分解透視圖，第7圖為第4圖之B_B線剖視圖。 第4圖中’ 1為收容有圖無表示之開關機構及多數對 之開關接點之合成樹脂等絕緣材料所形成之箱型容器狀之 斷路器之基座。圖所示之基座丨中配置有二極之開關機 構’因此設置二個用以使其相互間絕緣之間隔壁2〇、2 1。 在第4圖及第6圖中，10為端子部，分別由銅或銅合 金製成之導體所形成之端子板2,銅或銅合金製成之導體 ’所形成之無銲接端子3，及端子螺絲4構成。 第4圖中’ 5為由合成樹脂等絕緣材料形成之外蓋， 係以由前述基座1之上方閉合外蓋之方式組合。 再者在第4圖中’6為附槽外部導體，係夾於端子螺 絲4與端子板2之間，而與端子板2電氣連接。7為無槽 外部導體，係夹於端子板2與無銲接端子3之間，而與端 子板2電氣連接。 在第6圖’為施行相互間之絕緣，而配置於基座1之 中央長邊方向之間隔壁20、21之箱外部側設有具凸部之基 本紙張尺度適用中围國家梯準（CNS > Α4^ ( 210χ297公缝） 311040 (請先聞讀背面之注意事項再填寫本頁) 434619 A7 B7 五、發明説明（2 ) 座側卡扣部1 b、1 b。 並且’ lc為決定端子板2之位置之承受座，id為插入 外部導體所需之導體插入孔，le為與前述承受座lc共同 決定端子板2之位置所需之垂直承受座，lf為相當於基座 1内面之基座内面β 3為無銲接端子，插谈於端子板2之水平下部2a，使 用端子螺絲4貫穿端子板2之水平上部2b之貫穿孔2c， 鎖緊螺絲部3a而與之組合成一體，即構成端子部ι〇β 此種端子部10’係以端子板2之垂直下部2d位於基 座1之承受座lc上的方式組入，並以基座丨之基座内面 If、承受座lc、垂直承受座ie與後述之外蓋之抵壓部5b 等加以保持，而以即使有力作用於外部導體6或7時端子 部10亦不移動之方式固定。 5 a為設置在外蓋5之外蓋側卡扣部，本例中其上係配 設有與設置在一方之間隔壁20之基座側卡扣部1 b之凸部 相配合之孔》5b為抵壓端子板2之垂直上部2e以固定端 子板2之抵壓部。 在於包括前述之基座1及外蓋5之斷路器中，外蓋5 之外蓋側卡扣部5a，以第5圖所示之卡鈎長度（L1)之部分 變形，而與收容開關機構等（圖無表示）之基座1之基座卡 扣部lb嵌合（以下稱此種嵌合為卡扣配合），由此使基座1 與外蓋5組合成一體。 第8圖為表示斷路器連接有附槽外部導體6之狀態之 刻視圖在端子螺絲4與端子板2之水平上部2b之間插入外 (請先閱讀背面之注意事項再填寫本頁) ,ΤΓ 線、 經濟部智慧財產局員工消资合作社印製 本紙張尺度通用中國菌家揉準（CNS ) Α4規格（2】ΟΧ297公釐） 2 311040 B7 五、發明説明（3 ) 部導體6之槽部，藉由端子螺絲4鎖緊於無銲接端蚤3之 螺絲部3a，可以使附槽外部導體6電氣連接於端子板2。 再者，第9圖為表示外部導體7連接於斷路器之狀態 之剖視圖，透過基座！之導體插入孔ld，在無銲接端二 與端子板2之水平下部2a之間插入外部導體7之前端部， 藉由端子螺絲4鎖緊於無銲接端子3之螺絲部3a，可以使 外部導體7電氣連接於端子板2。 [欲解決之問題] 、 在前所述構成之斷路器中，如第8圖之箭頭所示，對 附槽外部導體6施加過大作屋力時，由於附槽外部導體6 向上推壓外蓋5卡扣配合即脫開.，而有外蓋5自基座1脫 離’外蓋側卡扣部5 a或基座側卡扣部1 b破損之問題。 再者’如第9圖之箭頭所示，對插入於導體插入孔id 之外部導體7施加過大的作用力時，透過端子板2對抵壓 端子板2而固定之外蓋5之抵壓部5b施力，而有外蓋5 自基座1脫離’外蓋側卡扣部5a或基座側卡扣部lb破損 之問題。 經 濟 部 慧 財 產 局 A 工 消 合 再 社 印 製 再者’如第5圖所示’在斷路器之手柄（圖無表示）之 操作時’對外蓋5施加如箭頭方向之作用力，則具有電源 側或負載側之單方之外蓋側卡扣部撓曲，相反側之外蓋 侧卡扣部5a與基座側卡扣部a之卡鈎長度（L1)消失，而 使外蓋5容易脫落之問題。 本發明之目的在於提供解決前述問題，外蓋5不容易 由基座1脫落’或外蓋側卡扣部5a或基座側卡扣部lb不 本紙張尺度通用中而 311040 434619 A7 B7 五、發明説明（4 ) 容易破損之斷路器。 [解決問題之手段] 申請專利範圍第1項之發明，係具備有使間隔壁介於 中間而設有多數端子部之基座，及藉卡扣配合而固定於前 述基座之外蓋之斷路器，其特徵在於：具有沿前述外蓋之 裝設方向地設於前述間隔壁之插入凹部，以及設於前述外 蓋而在裝設外蓋時嵌合於前述插入凹部之插入凸部。 申請專利範圍第2項之發明，係在申請專利範圍第1 項之斷路器中，卡扣配合係藉基座側卡扣部與外蓋側卡扣 部之兹合而形成，前述基座側卡扣部設置於鄰接插入凹部 之位置’前述外蓋側卡扣嵌部設置於鄰接前述插入凸部之 位置。 申請專利範圍第3項之發明，係在申請專利範圍第i 項或第2項之斷路器中’外蓋在外蓋側卡扣部與外蓋之底 面之間與該底面平行之方向上設置有緩衝開縫。 [圖式簡單說明] 第1圖係表示外蓋與基座之組合前之狀態之斷路器之 透視圖。 第2圖係第1圖之C-C線剖視圏。 第3圖係第1圖所不斷路器之負載側視圖。 第4圖係表示以往之斷路器之基座與外蓋組合前之狀 態之透視圖， 第5圖係第4圓之A-A線剖視圖。 第6圖係第4圊所示斷路器之主要部分的分解透視圖。 ----------系-- ί、 (請先聞讀背面之注意事續再填寫本頁) -Φ Γ 經濟部智慧財產局員工消費合作社印製 本紙張尺度通用中國國家揉準（CNS > Α4規格（2丨0Χ297公簸） 4 311040 經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明説明（5 ) 第7圖係第4圖之B-B線剖視圖。 第8圖係表示以往之斷路器連接有附槽外部導體之狀 態之剖視圖。 第9圖係表示以往之斷路器連接有外部導體之狀態之 剖視圖。 [符號說明] 1 基座 lb 基座側卡扣部 If 基座内部 lh 縱側面 li 橫侧面 3 無銲接端子 5 外蓋 5a 外蓋側卡扣部 5b 抵壓部 5d 角部 5e 前端部 5f 外蓋底面 5g 緩衝開縫 6 附槽外部導體 7 外部導體 10 端子部 20 > 21 基座間隔壁（間隔壁） 30 ' 31 插入槽（插入凹部) 40、41 外蓋間隔壁（插入凸部） [實施例] 實施例1 實施例1係包括：外蓋5，係藉卡扣配合而固定於基 座1;以及多數之端子部1〇,係並列配置於基座1内；並 配設有凹設於基座1之作為插入凹部之插入槽3〇、31，以 及可嵌入該插入槽30、31地凸設於前述外蓋之作為插入凸 部之外蓋間隔壁40、4 1 ’以在並列配置於前述基座丨内之 端子部10之相互間作遮蔽。 尽..氏张尺皮通用肀國囷家揉率（CNS ) A4規格（2丨0x297公釐） 311040 ----------扯衣------，玎------0 (請先閱讀背面之注意事項再填寫本頁) 4346 1 9 A7 --------B7_ 五、發明説明（6 ) 再者’卡扣配合係藉基座側卡扣部lb、lb與外蓋侧卡 扣部5a、5a之嵌合而形成，前述一方之基座側卡扣部lb 配置在相鄰於插入槽30之位置，另一方之基座側卡扣部 lb配置在相鄰於插入槽31之位置，前述一方之外蓋側卡 扣部5a配置在相鄰於外蓋間隔壁4〇之位置，另一方之外 蓋側卡扣部5a配置在相鄰於外蓋間隔壁41之位置。 再者’在外蓋側卡扣部5a及5a與外蓋底面5f之間， 在與該外蓋底面5f平行之方向分別配置開縫5g、5g。 以下依據第1圖至第3圖說明本實施例1。 第1圖為表示組合基座與外蓋前之狀態之斷路器的透 視圖’第2圖為第1圖之C_C線剖視圖，第3囷為第1圖 所示斷路器之負載側視圖。 並且，圖中與以往之斷路器相同或相當部分附以相同 符號，並省略其說明β 在第1圖及第2圖中，30、31為分別配置於基座1之 中央長邊方向之兩端側之間隔壁20、21所各自形成的作為 插入凹部之插入槽’其係在組合外蓋5時，分別供設於外 蓋5側之作為插入凸部之外蓋間隔壁4〇、4 1沿組裝方向插 入0 在本例中’由於係由基座1上方以蓋之狀態組合外蓋 5’因此入槽30、31係在基座側間隔壁20、21之寬度内形 成為由其上端側向下端側即向垂直方向穿設之孔，本例中 係形成為窄的矩形孔狀β對應於此，另一方之外蓋側間隔 壁40、41形成為由外蓋5之底面“垂直向下延伸之突起， (請先閱讀背面之注意事項再填寫本頁} -. 訂. 經濟部智慧財產局員工消費合作社印製 本紙張尺度朝 ( CNS ) ( 210X297^ ) 6 311040 . h 經濟部智慧財產局.0.工消費合作社印製 A7 B7 五、發明説明（7 〉 在本例中形成為板狀。 形成於該外蓋5之板狀之外蓋間隔壁40、41，係以與 插入槽30、31之縱側面lh及插入槽30、31之橫側面Η 在插入狀態緊密接合之方式形成為外蓋間隔壁40、41 之角部’ 5e為外蓋間隔壁40、41之前端部。5g係在外蓋 側卡扣部5a與外蓋底面5f之間沿著外蓋底面5f或平行於 外蓋底面5f而配置之緩衝開缝。 在前述斷路器中，在外蓋5裝設於收容有開關機構等 (圖無表示）之基座i之情況下，首先使外蓋側間隔壁40、 41之前端部5e、5e分別嵌合於配置在基座1之插入槽30、 31 ’外蓋間隔壁40、41在插入槽30、31之縱側面ih及橫 側面1 i之引導下插入，外蓋側卡扣部5 a與基座側卡扣部 lb成為卡扣配合，外蓋5即固定於基座i。 益且’成為卡扣配合時由於設置有緩衝開缝5g，因此 使外蓋側卡扣部5a撓曲，可以圓滑地施行基座側卡扣部 lb之卡扣配合動作。 再者，外蓋間隔壁40、41與插入溝30、31之嵌合部 尺寸在插入狀態下係以互相間之間隙儘量小的方式形成， 因此例如過大的作用力以第8圖之箭頭所示的方向施加於 附槽外部導體6時，由於該作用力施加於外蓋5前外蓋間 隔壁40、41之角部5d係頂接於基座I之縱側面u，因此 作用力不直接施加於外蓋側卡扣部5a » 再者’例如過大的作用力以第9圖之箭頭所示的方向 施加於外部導體7時，該作用力施加於抵壓部前外蓋5 各紙張尺度適用㈣國家縣（CNS) A規^ (2IGx297公着 311040 ----------种衣-------ΪΤ------1 (請先閲讀背面之注意事項再填寫本頁) 434619 A7 B7 五、發明説明（8 ) " 之前端部5e頂接於基座1之橫側面U，作用力則不直接 施加於外蓋側卡扣部5a。 再者，操作手柄時，過大的作用力以第5圖之箭頭所 示的方向施加於外蓋5之情況下，由於角部5(1頂接於基座 1之縱側面lh’可以確保外蓋側卡扣部5a與基座側卡扣部 lb之卡鈎長度L1。 再者，由於外蓋間隔壁40、41係在垂直方向延伸，可 充分配合插入槽30、31與插入深度之尺寸而與之嵌合，故 饭使收容於基座1之開關接點（圖無表示）因關斷大電流時 所產生之氣體之壓力，而使外蓋5上浮時，亦可碟保其與 插入槽30、31之栽合。..A7 A7, printed by the Economic and Social Finance Bureau M 赀 Cooperative Agency B7 V. Description of the Invention (1) [Field of the Invention] The present invention relates to a circuit breaker for a protection circuit, and particularly to a combination of a base and a cover thereof. [Previous technology 丨 The past technology is explained based on Figs. 4 to 9]. FIG. 4 is a perspective view showing a state before the combination of the base and the outer cover of the circuit breaker of Shikai Hei 5-66857 in Japan. FIG. 5 is a cross-sectional view taken along line AA in FIG. 4 and FIG. An exploded perspective view of the main part of the circuit breaker shown in FIG. 4, and FIG. 7 is a sectional view taken along line B_B in FIG. 4. In the fourth figure, "1" is a base of a box-shaped container-shaped circuit breaker formed of an insulating material such as a switch mechanism not shown in the figure and a plurality of pairs of switch contacts. In the base shown in the figure, a two-pole switching mechanism is provided, so two partition walls 20 and 21 are provided to insulate them from each other. In FIGS. 4 and 6, 10 is a terminal portion, a terminal plate 2 formed by a conductor made of copper or a copper alloy, and a solderless terminal 3 formed by a conductor made of copper or a copper alloy, and The terminal screw 4 is configured. In the fourth figure, reference numeral 5 denotes an outer cover formed of an insulating material such as a synthetic resin, and is assembled by closing the outer cover from above the base 1. In the fourth figure, '6' is a slotted external conductor, which is sandwiched between the terminal screw 4 and the terminal plate 2 and is electrically connected to the terminal plate 2. 7 is a slotless external conductor, which is sandwiched between the terminal board 2 and the solderless terminal 3, and is electrically connected to the terminal board 2. In Figure 6 ', for the purpose of insulation between each other, the basic paper size with projections on the outer side of the boxes 20 and 21 arranged in the central long side direction of the base 1 is suitable for the China National Standards (CNS) > Α4 ^ (210 × 297 cm) 311040 (Please read the precautions on the back before filling out this page) 434619 A7 B7 V. Description of the invention (2) Seat-side buckle parts 1 b, 1 b. And 'lc is the decision The receiving seat at the position of the terminal board 2, id is a conductor insertion hole required for inserting an external conductor, le is a vertical receiving seat required to determine the position of the terminal board 2 together with the aforementioned receiving seat lc, and lf is equivalent to the inner surface of the base 1. The inner surface β 3 of the base is a solderless terminal. It is inserted into the lower horizontal portion 2a of the terminal plate 2. The terminal screw 4 is used to penetrate the through hole 2c of the horizontal upper portion 2b of the terminal plate 2. The screw portion 3a is locked and integrated into one. That is, the terminal portion 10 ′ is constituted. Such a terminal portion 10 ′ is assembled in such a manner that the vertical lower portion 2d of the terminal plate 2 is located on the receiving seat lc of the base 1, and the inner surface of the base If, the receiving seat lc, the vertical receiving seat ie and the pressing part 5b of the outer cover to be described later, etc. It is fixed in such a manner that the terminal portion 10 does not move even when it is strongly applied to the external conductor 6 or 7. 5 a is provided on the cover side of the outer cover 5 and in this example is provided with and arranged on one side. The hole 5b corresponding to the convex portion of the base side buckling portion 1 b of the partition wall 20 is a pressing portion that presses the vertical upper portion 2 e of the terminal plate 2 to fix the pressing portion of the terminal plate 2. It includes the aforementioned base 1 and the outside. In the circuit breaker of the cover 5, the outer cover 5 of the outer cover side buckle portion 5a is deformed by a part of the hook length (L1) shown in FIG. 5 and is similar to the base for housing the switch mechanism (not shown). The base buckle part 1 of the base 1 is fitted (hereinafter, this fitting is referred to as a snap fit), so that the base 1 and the outer cover 5 are integrated into one. Figure 8 shows that the circuit breaker is connected with a slotted external conductor. The engraved view of the state of 6 is inserted between the terminal screw 4 and the horizontal upper part 2b of the terminal board 2 (please read the precautions on the back before filling this page). It is printed by the ΓΓ line, the staff of the Intellectual Property Bureau of the Ministry of Economic Affairs The size of this paper is generally CNS Standard A4 (2) 0 × 297 mm 2 311040 B7 V. Invention The groove part of the conductor (6) is fixed to the screw part 3a of the non-welded end flea 3 by the terminal screw 4, so that the external conductor 6 with the groove can be electrically connected to the terminal board 2. Furthermore, FIG. 9 is A cross-sectional view showing the state where the external conductor 7 is connected to the circuit breaker. Through the conductor insertion hole ld of the base! Insert the front end of the external conductor 7 between the non-welded end 2 and the horizontal lower part 2a of the terminal board 2. 4 Tighten the screw part 3a of the non-welded terminal 3, so that the external conductor 7 can be electrically connected to the terminal board 2. [Problems to be solved] In the circuit breaker configured as described above, as shown by the arrow in Fig. 8 When excessive force is applied to the external conductor 6 with groove, the external conductor 6 with the groove pushes up the outer cover 5 to be snap-fitted, and the outer cover 5 is released from the base 1 and the outer cover side buckle is released. The part 5 a or the base-side buckle part 1 b is damaged. Furthermore, as shown by the arrow in FIG. 9, when an excessive force is applied to the outer conductor 7 inserted in the conductor insertion hole id, the terminal plate 2 is pressed against the terminal plate 2 to fix the pressing portion of the outer cover 5. 5b exerts a force, and there is a problem that the outer cover 5 is disengaged from the base 1 and the outer cover-side engaging portion 5a or the base-side engaging portion 1b is damaged. A printed by the Industrial and Commercial Bureau of the Ministry of Economic Affairs and Industry Co., Ltd., as shown in Figure 5, 'When the handle of the circuit breaker (not shown) is operated', the force applied to the outer cover 5 in the direction of the arrow has The one-side outer cover-side buckle portion of the power source side or the load side is bent, and the hook length (L1) of the outer side cover-side buckle portion 5a and the base-side buckle portion a disappears, making the outer cover 5 easy. The problem of falling off. The purpose of the present invention is to provide solutions to the aforementioned problems, the outer cover 5 is not easy to fall off from the base 1 ', or the outer cover-side latching portion 5a or the base-side latching portion lb is not in common with the paper size, and 311040 434619 A7 B7 V. Description of the invention (4) A circuit breaker which is easily damaged. [Means for Solving the Problem] The invention according to the first scope of the patent application is provided with a base with a plurality of terminal portions interposed between the partition walls and a circuit breaker fixed to the outer cover of the base by snap-fitting. The device is characterized by having an insertion recess provided on the partition wall along the installation direction of the outer cover, and an insertion projection provided on the outer cover and fitted into the insertion recess when the outer cover is installed. The invention of the second scope of the patent application is the circuit breaker of the first scope of the patent application, and the snap-fit is formed by the combination of the base-side buckle portion and the cover-side buckle portion. The buckling portion is provided at a position adjacent to the insertion recess. The aforementioned cover-side buckling insertion portion is provided at a position adjacent to the insertion projection. The invention in item 3 of the scope of patent application is provided in the circuit breaker of item i or item 2 of the scope of patent application. The outer cover is provided in a direction parallel to the bottom surface between the snap portion on the outer cover side and the bottom surface of the outer cover. Cushion slit. [Brief description of the drawings] Figure 1 is a perspective view of the circuit breaker showing the state before the combination of the cover and the base. Figure 2 is a sectional view taken along line C-C in Figure 1. Figure 3 is a side view of the load of the circuit breaker shown in Figure 1. Fig. 4 is a perspective view showing a state before a base and an outer cover of a conventional circuit breaker are assembled, and Fig. 5 is a cross-sectional view taken along line A-A of a fourth circle. Fig. 6 is an exploded perspective view of the main part of the circuit breaker shown in Fig. 4 (a). ---------- Department-- ί, (please read the notes on the reverse side and then fill out this page) -Φ Γ Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs, Consumer Cooperatives, Paper Size Universal China State Kneading Standard (CNS > Α4 specification (2 丨 0 × 297)) 4 311040 Printed by the Consumers ’Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 V. Description of the invention (5) Figure 7 is a sectional view taken along line BB in Figure 4. Figure 8 It is a sectional view showing a state where a conventional circuit breaker is connected with a slotted external conductor. FIG. 9 is a sectional view showing a state where a conventional circuit breaker is connected with an external conductor. [Description of symbols] 1 Base lb Base side buckle If Inside of the base lh Longitudinal side li Lateral side 3 No soldering terminal 5 Outer cover 5a Outer cover side snap portion 5b Pressing portion 5d Corner portion 5e Front end portion 5f Outer cover bottom surface 5g Buffer slit 6 External grooved conductor 7 External conductor 10 Terminal section 20 > 21 Base partition wall (partition wall) 30 '31 Insertion groove (insertion recess) 40, 41 Cover partition wall (insert projection) [Example] Example 1 Example 1 includes: outer cover 5 , Is fixed to the base 1 by a snap fit; and more The terminal portion 10 is arranged side by side in the base 1; and is provided with insertion grooves 30 and 31 recessed in the base 1 as insertion recesses, and protrudingly inserted in the insertion grooves 30 and 31. The above-mentioned outer cover is used as an inserting projection, and the outer cover partition walls 40, 4 1 ′ are used to shield each other between the terminal portions 10 arranged side by side in the aforementioned base. Kneading rate (CNS) A4 specification (2 丨 0x297 mm) 311040 ---------- pull clothes ------, 玎 ------ 0 (Please read the precautions on the back first (Fill in this page again) 4346 1 9 A7 -------- B7_ V. Description of the invention (6) Furthermore, the 'snap fit' is based on the base side buckle parts lb, lb and the cover side buckle part 5a And 5a are formed by fitting, the base-side buckling portion lb of the aforementioned one is arranged adjacent to the insertion groove 30, and the other base-side buckling portion lb is arranged adjacent to the insertion groove 31, The aforementioned one-side cover-side engaging portion 5a is disposed adjacent to the outer-cover partition wall 40, and the other one-side cover-side engaging portion 5a is disposed adjacent to the outer-cover partition wall 41. Further, ' On the cover side, the buckling portions 5a and 5a and the outer Between the bottom surface 5f, slits 5g and 5g are arranged in a direction parallel to the bottom surface 5f of the cover. The first embodiment will be described below with reference to Figs. 1 to 3. Fig. 1 shows the front of the combined base and the cover. The perspective view of the circuit breaker in the state 'FIG. 2 is a cross-sectional view taken along the line C_C in FIG. 1, and FIG. 3 is a side view of the load of the circuit breaker shown in FIG. 1. Identical symbols are omitted and their descriptions are omitted. Β In the first and second figures, 30 and 31 are formed by the partition walls 20 and 21 respectively disposed on both ends of the central long side direction of the base 1. The insertion grooves of the insertion recesses are provided when the outer cover 5 is combined, and the outer cover partition walls 40, 4 which are provided as insertion protrusions on the side of the outer cover 5 are respectively inserted in the assembly direction. 0 In this example, The outer cover 5 'is assembled from the top of the base 1 in a cover state. Therefore, the grooves 30 and 31 are formed in the width of the base-side partition walls 20 and 21 to form holes vertically extending from the upper end side to the lower end side, that is, vertically. In this example, the narrow rectangular hole shape β corresponds to this, and the other side of the cover side partition wall 40, 41 shape Become a protrusion extending vertically downward from the bottom surface of the outer cover 5. (Please read the precautions on the back before filling out this page}-. Order. Printed by the Intellectual Property Bureau Staff Consumer Cooperatives of the Ministry of Economic Affairs (CNS) ( 210X297 ^) 6 311040. H Intellectual Property Bureau of the Ministry of Economic Affairs. 0. Printed by the Industrial and Consumer Cooperative A7 B7 V. Description of the invention (7) In this example, it is formed into a plate shape. The plate-shaped outer cover partition walls 40 and 41 formed in the outer cover 5 are formed so as to be tightly engaged with the longitudinal side surfaces lh of the insertion grooves 30 and 31 and the lateral side surfaces 插入 of the insertion grooves 30 and 31 in the inserted state. The corner portion '5e of the cover partition walls 40 and 41 is a front end portion of the outer cover partition walls 40 and 41. 5g is a buffer slit that is arranged between the outer cover side snap portion 5a and the outer cover bottom surface 5f along the outer cover bottom surface 5f or parallel to the outer cover bottom surface 5f. In the aforementioned circuit breaker, when the outer cover 5 is mounted on a base i housing a switch mechanism or the like (not shown in the figure), the front end portions 5e and 5e of the outer cover-side partition walls 40 and 41 are respectively fitted to The partition walls 40 and 41 of the cover 1 disposed on the base 1 are inserted under the guidance of the longitudinal side ih and the lateral side 1 i of the insertion grooves 30 and 31, and the cover side latching portion 5 a and the base are inserted. The side buckle portion lb becomes a snap fit, and the outer cover 5 is fixed to the base i. Since it is provided with a buffer slit 5g when the snap-fit is performed, the outer cover-side snap portion 5a is flexed, and the snap-fit operation of the base-side snap portion lb can be smoothly performed. Furthermore, the dimensions of the fitting portions of the outer partition walls 40 and 41 and the insertion grooves 30 and 31 are formed so that the gap between them is as small as possible in the inserted state. Therefore, for example, an excessive force is indicated by an arrow in FIG. 8. When the direction shown in the figure is applied to the grooved external conductor 6, the force 5 is applied to the longitudinal side u of the base I because the force 5 is applied to the corner 5d of the front cover partition walls 40 and 41 of the cover 5. When applied to the outer cover side buckle portion 5a »Furthermore, for example, when an excessive force is applied to the outer conductor 7 in the direction shown by the arrow in FIG. 9, the force is applied to the front cover 5 of the pressing portion by each paper size. Applicable ㈣County and County (CNS) Regulation A ^ (2IGx297 Public Book 311040 ---------- Seed Clothing -------- ΪΤ ------ 1 (Please read the notes on the back first (Fill in this page again) 434619 A7 B7 V. Description of the invention (8) " The front end 5e is abutted on the lateral side U of the base 1, and the force is not directly applied to the cover side buckle 5a. Furthermore, When the handle is operated, when an excessive force is applied to the outer cover 5 in the direction shown by the arrow in FIG. 5, the corner portion 5 (1 abuts on the longitudinal side lh 'of the base 1) The hook length L1 of the cover-side latching portion 5a and the base-side latching portion lb can be ensured. Moreover, since the cover partition walls 40 and 41 extend in the vertical direction, the insertion grooves 30, 31 and the insertion slots can be fully matched. Depth size fits it, so rice makes the switch contacts (not shown) housed in the base 1 due to the pressure of the gas generated when the large current is turned off, and the outer cover 5 can also be dished Make sure it fits into the insertion slots 30, 31 ..
[發明效果] 依據申請專利範圍第1項至第3項之發明，則過大作 用力施加於連接於端子部之外部導艘時_或操作手持時，過 大_作用力施加於外蓋之情況下，外蓋也不容易脫箨。 再者，因開關接點關斷大電流時所產生之氣體之壓力 而使外蓋上浮時’藉由插入凹部與插_入凸部之嵌合，可以 充分確保端子部相互間之爬電距離，故不會降低絕緣耐 力。 再者，依據申請專利範圍第2項之發明，則可以防止 外蓋側卡扣部或基座側卡扣部破損》 再者，由於在插入凸部受插入凹部之引導的同時使基 座側卡扣部與外蓋側卡扣部施行卡扣配合動作，可以使外 蓋裝設於基座之作業圓滑而且容易施行。 (請先閲讀背面之注意事項再填寫本頁) -策· 經濟部智慧財產局員工消费合作社印製 本紙張尺度適用中國國家棣準（CNS M4規格（210X297公釐） 8 311040 A7 B7 五、發明説明（9 ) 一 再者，依據申請專利範圍第3項之發明，則在卡扣配 合時由於緩衝開縫之作用使外蓋侧卡扣部之容易撓曲，故 可以容易而且圓滑施行外蓋裝設於基座之作業。 I---------1衣------1T------^ {請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 311040 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐）[Effects of the invention] According to the inventions in claims 1 to 3 of the scope of the patent application, when excessive force is applied to the external guide boat connected to the terminal section _ or when the handle is operated, excessive force is applied to the cover , The cover is not easy to detach. In addition, when the cover is floating due to the pressure of the gas generated when the switch contact is turned off, the mating distance between the terminal portions can be sufficiently ensured by the fitting of the insertion recess and the insertion_protrusion. , So it will not reduce the insulation endurance. Furthermore, according to the invention in the scope of patent application No. 2, it is possible to prevent the buckle portion on the cover side or the buckle portion on the base side from being damaged. Furthermore, since the insertion convex portion is guided by the insertion concave portion, the base side The snap-fitting action of the buckle part with the buckle part of the outer cover side can make the operation of installing the outer cover on the base smooth and easy to implement. (Please read the precautions on the back before filling out this page)-Policy · Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs, Consumer Cooperatives This paper is printed in accordance with China National Standards (CNS M4 specification (210X297 mm) 8 311040 A7 B7 V. Invention Explanation (9) Repeatedly, according to the invention in the scope of patent application No. 3, the buckle of the outer cover is easily bent due to the buffer slitting effect during the snap fit, so the outer cover can be easily and smoothly implemented. Operation on the pedestal. I --------- 1 clothing ------ 1T ------ ^ {Please read the precautions on the back before filling in this page) Intellectual Property of the Ministry of Economic Affairs Printed by the Bureau ’s Consumer Cooperatives 311040 This paper is sized for China National Standard (CNS) A4 (210X297 mm)