512377 A7 B7 五、發明説明（1 ) 【發明所屬之技術領域】 (請先閱讀背面之注意事項再填寫本頁) 本發明係關於一種熱應動開關，特別是，關於一種藉 由雙金屬片的熱應動使可動接點反轉，從而使電氣接點打 開或閉合的開關結構。 【以往的技術】 熱應動開關，係被設有可動電極和固定電極，與電氣 設備的電路相連接而對這電氣設備進行保護。上述可動電 極，係將幾張熱膨脹係數不同的金屬片合倂在一起的熱應 動元件（雙金屬）來作成可動片；而上述固定電極則是與 可動電極一起構成常閉接點式電路的。 經濟部智慧財產局員工消費合作社印製 也就是說，由於與電氣設備的電路相連接的熱應動開 關是在過大的電流流過這電氣設備時，或周圍溫度·非常高 時，由雙金屬的彎曲反轉作用而將開關接點打開，就會切 斷向電氣設備的供電。而且，透過上述的切斷對電氣設備 的供電、使周圍溫度下降，由此使雙金屬自動重定，使開 關接點再次閉合、再開始對電氣設備供電，因此能有防止 危險發生的作用，而且能使電氣設備經常在規定的溫度範 圍內動作。 而且，已知一種技術被製作成：與雙金屬並列地設置 的作爲過電流保護電路的電阻，在施加額定値以上的過剩 電壓而流過過剩電流時，由這電阻燒斷而使電路斷開，從 而保護電氣設備。 作爲這種以往的熱應動開關的結構，係在由合成樹脂 本纸張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） -4- 512377 A7 B7 五、發明説明（2 ) (請先閱讀背面之注意事項再填寫本頁) 等絕緣材料形成有底箱形的殼體的內底面上，以一定的間 隔’使一對由導電性金屬構成的固定端子被對向配設著。 其中’在一方的固定端子上形成固定接點，另一方的固定 端子上懸臂狀地緊固著雙金屬片，而在該雙金屬片的一端 側上緊固著可動接點。 而且’上述可動接點，是能與上述固定接點相接觸或 分離地’以一定的間隔、被對向地配設著，在上述雙金屬 片的中央形成圓頂狀的反轉部，這個反轉部做成能根據溫 度的變化而反轉。另外，在平常的狀態下，上述可動接點 會與上述固定接點接觸著，使開關電路成爲接通的狀態。 又’上述雙金屬片，係以雷射焊接等方法緊固在上述 固定端子上，而作爲進行雷射焊接的位置，係透過上述反 轉部而被形成於與上述可動接點對向著的另一端側上。此 外’還安裝著板狀的蓋子，其覆蓋住收容著上述雙金屬片 的殼體的開口部。 經濟部智慧財產局員工消費合作社印製 爲了將上述這樣的雙金屬片緊固在上述固定端子上， 如第1 0圖所示、使用雙金屬吸引夾具5 1將緊固著上述 可動接點的上述雙金屬片定位在上述殼體的規定位置上， 重合在上述固定端子上後裝入；在下一個工程中，用雷射 照射裝置5 2、從殼體的上面側、進行雷射焊接而加以裝 配。 另外，在圖中、5 3係表示將多個殻體連續形成帶狀 的帶材、5 4是裝配裝置的導引件、5 5是裝配裝置的支 柱、5 6是裝配裝置的基底。 本紙張尺度適用中國國家標準（〇见）八4規格（210父297公釐）. 512377 A7 B7 五、發明説明（3 ) 【發明所欲解決的課題】 可是，在製造上述以前的熱應動開關中，在將固定端 子和雙金屬片進行雷射焊接時，因爲在熔融金屬時會發生 金屬的飛散，而這飛散的金屬會殘留在殼體內的底部，所 以爲了將其淸除，就必需進行淸洗等別的工程，因此裝配 也就變得煩雜，產生了無法以低價進行製造的問題。 又，爲了因應開關殼體小型化，在以往的熱應動開關 的裝配中，並不能將雙金屬吸引夾具5 1和雷射照射裝置 5 2以互不干涉地配置在同一位置上。所以在把雙金屬片 裝到殼體內之後，必須使工件朝箭頭Y方向輸送到雷射照 射裝置5 2的配置位置，由這移動就有可能會引起雙金屬 片的位置偏移。 因此，爲了解決上述現有技術存在的問題，本發明的 目的，係提供一種使用雙金屬片的熱應動開關的結構，在 將雙金屬片組裝到殼體而雷射焊接到固定端子時，可防止 因金屬溶化而産生飛散的熱應動開關的結構。 本發明的另一目的，是提供一種以高精度地組進雙金 屬片之熱應動開關。 【用以解決課題之手段】 爲達到上述目的，在本發明中作爲第一手段之熱應動 開關，其特徵在於，具備：有底狀的殼體；配設在該殻體 的內底面上的固定接點；具有能夠隨著溫度而反轉的反轉 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） ""-- -6 - (請先閲讀背面之注意事項再填寫本頁} •裝 訂 經濟部智慧財產局員工消費合作社印製 512377 A7 ____B7 五、發明説明（4 ) (請先閱讀背面之注意事項再填寫本頁) 部、在一端緊固著能與上述固定接點相接觸或脫離的可動 接點的雙金屬片；與該雙金屬片的另一端重合而成懸臂狀 加以緊固、而且配設在上述殼體的內底面上的固定端子； 其中’在上述殼體的底部，對應上述固定端子和雙金屬片 的重合部位，形成能從殼體的外底面照射雷射的開口部。 又，於上述固定端子和雙金屬片重合的部位，係從上 述殼體的開口部側朝殼體內側、形成尖細狀的焊接部；該 焊接部通過上述固定端子而被形成在上述雙金屬片的厚度 範圍內。 又，上述開口部是在上述殼體成形時、設置在殼體底 部上的上述固定端子導引銷的銷迹。 【發明之實施形態】 經濟部智慧財產局員工消費合作社印製 下面，第1圖〜第9圖表示了本發明的實施例。第1 圖是將熱應動開關蓋子卸掉後狀態的平面圖。第2圖是表 示第1圖所示的熱應動開關的在將蓋子卸掉後狀態的剖面 圖。第3圖是表示第1圖所示的熱應動開關的在將蓋子卸 掉後狀態的配置著固定接點和固定端子的殼體的平面圖。 第4圖是表示第1圖所示的熱應動開關的在將蓋子卸掉後 狀態的配置著固定接點和固定端子的殼體的剖面圖。第5 圖是表示第1圖所示的熱應動開關的在將蓋子卸掉後狀態 的配置著固定接點和固定端子的殼體的下視圖。第6圖是 表示第1圖所示的熱應動開關的緊固著可動接點狀態下的 雙金屬片的平面圖。第7圖是表示第1圖所示的熱應動開 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） 512377 A7 _ B7 五、發明説明（5) 關的緊固著可動接點狀態下的雙金屬片的正視圖。第8圖 是表示本發明的固定端子和雙金屬片的接合狀態的示意圖 。第9圖是表示本發明的將雙金屬片裝到殻體裏時、與固 定端子的接合工程的示意圖。 圖中、殻體1是用合成樹脂等絕緣材料做成上面開口 的箱狀。在這個殻體1的內底部上設置著下述的各個端子 ，各個端子的一個端部從上述殼體1的兩個側面向外方伸 出。而且在上述殼體1的內底面的中央部位設置著支持突 起部1 a，它從殼體1的內底面突出成半球狀。 又，在上述殻體1的一端，還形成長方形狀的溝部 1 b，下述雙金屬片5的伸出臂部5 b會被卡合而被加以 導引於該溝部1 b。 又，在上述殼體1的底部，被設置著從外底面側起， 到達下述各個端子的內表面之開口部1 c、1 d。開口部 1 c、1 d，係在將各個端子***成形於上述殼體1內時 ，被設置於用來對各個端子進行定位之成形金屬模的導引 銷的銷迹（銷落區）。 第1端子2，是用黃銅等導電性金屬材料做成平板狀 。在這第1端子2的一端設有固定接點3，係由凸出於上 述殼體1的內底面表面上的小圓形平面所構成；在這第1 端子2的另一端上，被設有從上述殼體1的側面部向外方 伸出，與其他電氣設備的電路等連接之連接端子部2 b。 又，在上述第1端子2上’在上述固定接點3和上述 連接端子部2 b之間，在上述固定接點3附近被設有較寬 本紙張尺度適用中國國家標準（CNS ) Α4規格（210Χ297公釐） ί請先閲讀背面之注意事唄再填寫本頁〕 訂 —0. 經濟部智慧財產局員工消費合作社印製 -8 - 512377 經濟部智慧財產局員工消費合作社印製 A7 __ B7_五、發明説明（6 ) 狀的窗孔部2 c。這個窗孔部2 c是沿著上述第1端子2 的縱長方向、在通過上述固定接點3的中心線上形成；而 且在上述第1端子2的幅度方向上，將上述窗孔部2 c的 幅度做成比上述固定接點3的外周幅度還寬。上述窗孔部 2 c是與上述固定接點3的外周對齊，並圍繞著它旋轉切 進而形成。 又，在上述第1端子2上，包含上述窗孔部2 c的部 分上還設有傾斜部2 d，透過該傾斜部2 d，形成將上述 固定接點3和上述連接端子部2 b相連接的結構。在將上 述第1端子2裝配到上述殻體1上時，上述傾斜部2 d係 被埋設裝配在上述殼體1的內底部上。 第2端子4，也同樣地由黃銅等導電性金屬材料形成 平板狀。在這第2端子4的一端上，係以沖壓機等使其壁 厚偏斜而形成突出部4 a，該突出部4 a會構成爲固著於 下述雙金屬片5的一端部的熔接部。在這第2端子4的另 一端上，設有從上述殼體1的側面部向外方伸出而與其他 電氣設備的電路等連接之連接端子部4 b。 在上述第2端子4上、在緊固下述的雙金屬片5的上 述突出部4 a和上述連接端子部4 b之間的、上述突出部 4 a的附近設有幅度較寬的窗孔部4 c。這個窗孔部4 c 係沿著上述第2端子4的縱長方向、在通過上述突出部 4 a的中心線上形成；而且在上述第2端子4的幅度方向 上，將上述窗孔部4 c的幅度做成比上述突出部4 a的幅 度還寬。上述窗孔部4 c是與上述突出部4 a的外周對齊 (請先閱讀背面之注意事項再填寫本頁) •裝·512377 A7 B7 V. Description of the invention (1) [Technical field to which the invention belongs] (Please read the precautions on the back before filling out this page) The present invention relates to a thermally actuated switch, and in particular, to a method using a bimetal The thermal response of the switch structure causes the movable contact to be reversed, so that the electrical contact is opened or closed. [Previous technology] The thermal switch is provided with a movable electrode and a fixed electrode, and is connected to the electrical equipment circuit to protect the electrical equipment. The movable electrode is made of several thermally responsive elements (bimetals) with different thermal expansion coefficients of metal pieces to form a movable piece. The fixed electrode forms a normally closed contact circuit together with the movable electrode. . Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. That is, the thermal switch connected to the electrical equipment circuit is made of bimetal when excessive current flows through the electrical equipment, or when the ambient temperature is very high. When the switch contacts are opened by the bending reversal effect, the power supply to the electrical equipment will be cut off. In addition, by cutting off the power supply to the electrical equipment and lowering the ambient temperature, the bimetal is automatically reset, the switch contacts are closed again, and the power supply to the electrical equipment is restarted. Therefore, it can prevent danger from occurring, and Can make electrical equipment often operate within a specified temperature range. In addition, a technique is known in which a resistor provided as an overcurrent protection circuit in parallel with a bimetal is used, and when an excess current flows when an excess voltage of 値 or more is applied, the resistance is blown to open the circuit. To protect electrical equipment. As the structure of this kind of conventional thermal switch, it is based on the paper size of synthetic resin which is in accordance with Chinese National Standard (CNS) A4 (210X 297 mm) -4- 512377 A7 B7 V. Description of the invention (2) ( Please read the precautions on the back before filling in this page.) A pair of fixed terminals made of conductive metal are arranged opposite each other at regular intervals on the inner bottom surface of the bottom box-shaped housing made of insulating materials. . Among them, a fixed contact is formed on one fixed terminal, a bimetal is fastened to the other fixed terminal in a cantilever shape, and a movable contact is fastened on one end side of the bimetal. In addition, the "movable contact can be in contact with or separated from the fixed contact" is arranged at a certain interval and facing each other, and a dome-shaped reversal portion is formed in the center of the bimetal. The reversing section is configured to be reversible in accordance with a change in temperature. In addition, in a normal state, the movable contact is in contact with the fixed contact, and the switch circuit is turned on. The above-mentioned bimetal is fastened to the fixed terminal by a method such as laser welding, and as a position for laser welding, it is formed on the other side facing the movable contact through the reversing portion. One end on the side. In addition, a plate-shaped cover is attached to cover the opening of the case that houses the bimetal. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs in order to fasten the bimetal as described above to the fixed terminal, as shown in FIG. 10, a bimetal attracting clamp 51 is used to fasten the movable contact. The bimetal is positioned at a predetermined position on the casing, and is superimposed on the fixed terminal, and then loaded; in the next process, a laser irradiation device 5 is used. 2. Laser welding is performed from the upper side of the casing. assembly. In the figure, reference numerals 5 and 3 indicate strips in which a plurality of shells are continuously formed into a strip, 54 is a guide of the assembly device, 55 is a post of the assembly device, and 56 is a base of the assembly device. This paper size is in accordance with Chinese National Standards (see 0) 8.4 specifications (210 father 297 mm). 512377 A7 B7 V. Description of the invention (3) [Questions to be solved by the invention] However, before manufacturing the above-mentioned thermal response In the switch, when the fixed terminal and the bimetal sheet are laser-welded, metal scattering occurs when the metal is molten, and the scattered metal remains on the bottom of the case. Therefore, it is necessary to remove the metal Since other processes such as rinsing are performed, assembling becomes complicated, and there is a problem that it cannot be manufactured at a low price. Furthermore, in order to cope with the miniaturization of the switch housing, in the assembly of the conventional thermally actuated switch, the bimetallic suction jig 51 and the laser irradiation device 52 cannot be arranged at the same position without interference. Therefore, after the bimetal is installed in the housing, the workpiece must be transported to the position of the laser irradiation device 52 in the direction of arrow Y. This movement may cause the position of the bimetal to be shifted. Therefore, in order to solve the problems in the prior art mentioned above, the object of the present invention is to provide a structure of a thermally actuated switch using a bimetallic piece. When the bimetallic piece is assembled into a housing and the laser is welded to a fixed terminal, Structure to prevent thermally actuated switches from scattering due to metal melting. Another object of the present invention is to provide a thermally actuated switch incorporating dual metal pieces with high accuracy. [Means to solve the problem] In order to achieve the above-mentioned object, the thermal switch as the first means in the present invention is characterized by comprising: a bottom-shaped case; and a heat-resisting switch disposed on the inner bottom surface of the case. Fixed contact with inversion that can be reversed with temperature The paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) " "--6-(Please read the precautions on the back first Refill this page} • Binding printed by 512377 A7 ____B7 of the Intellectual Property Bureau of the Ministry of Economic Affairs, the employee ’s cooperative. V. Description of the Invention (4) (Please read the precautions on the back before filling this page) A fixed metal contact bi-metal piece with a movable contact that is in contact with or disengaged; a fixed terminal that overlaps with the other end of the bi-metal piece to form a cantilever shape and is fastened, and is arranged on the inner bottom surface of the housing; An opening is formed at the bottom of the housing corresponding to the overlapping portion of the fixed terminal and the bimetal. The opening can be irradiated with laser light from the outer bottom surface of the housing. In addition, at the portion where the fixed terminal and the bimetal overlap, A tapered welding portion is formed from the opening portion side of the casing toward the inside of the casing, and the welding portion is formed within the thickness range of the bimetal sheet by the fixed terminal. The opening portion is formed in the casing. The pin of the fixed terminal guide pin provided on the bottom of the housing during the forming of the body. [Embodiment of the invention] Printed below by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, the first to ninth figures show the present invention Fig. 1 is a plan view of the state of the thermal switch when the cover is removed. Fig. 2 is a sectional view of the state of the thermal switch shown in Fig. 1 after the cover is removed. The figure is a plan view showing a case where the fixed contact and the fixed terminal are arranged in a state where the cover is removed after the cover of the thermally actuated switch shown in Fig. 1. Fig. 4 is a view showing the thermal response shown in Fig. 1. Sectional view of a switch housing with fixed contacts and fixed terminals in the state after the cover is removed. Figure 5 shows the heat switch in the state shown in Figure 1 after the cover is removed. For fixed contacts and fixed terminals Bottom view. Figure 6 is a plan view showing the bimetal sheet with the movable contact fastened to the thermally actuated switch shown in Figure 1. Figure 7 is a diagram showing the thermally actuated switch shown in Figure 1 This paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) 512377 A7 _ B7 V. Description of the invention (5) The front view of the bimetal sheet with the movable contact secured. Figure 8 is FIG. 9 is a schematic view showing a state of joining the fixed terminal and the bimetal piece of the present invention. FIG. 9 is a schematic view showing a joining process with the fixed terminal when the bimetal piece is installed in the case of the present invention. In the figure, the case 1 It is made of insulating material such as synthetic resin and has a box shape with an open top. The following terminals are provided on the inner bottom of this case 1. One end of each terminal is outward from the two sides of the case 1. Reach out. A support protrusion 1a is provided at the center of the inner bottom surface of the casing 1, and it protrudes from the inner bottom surface of the casing 1 into a hemispherical shape. Furthermore, a rectangular groove portion 1b is formed at one end of the casing 1, and the protruding arm portion 5b of the bimetal 5 described below is engaged and guided to the groove portion 1b. Further, openings 1 c and 1 d are provided on the bottom of the case 1 from the outer bottom surface side to the inner surfaces of the respective terminals described below. The openings 1 c and 1 d are provided on the pins (pin drop areas) of the guide pins of the forming die for positioning the terminals when the respective terminals are inserted into the housing 1 and formed. The first terminal 2 is formed in a flat plate shape from a conductive metal material such as brass. A fixed contact 3 is provided at one end of the first terminal 2 and is composed of a small circular plane protruding from the inner bottom surface of the above-mentioned housing 1. On the other end of the first terminal 2, a fixed contact 3 is provided. There is a connection terminal portion 2 b which protrudes outward from the side portion of the casing 1 and is connected to a circuit or the like of another electric device. Further, on the first terminal 2, a wider paper size is provided between the fixed contact 3 and the connection terminal portion 2 b near the fixed contact 3, and the Chinese national standard (CNS) A4 standard is applied. (210 × 297 mm) ί Please read the notes on the reverse side before filling out this page] Order—0. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs -8-512377 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 __ B7 _Fifth, the description of the invention (6) -like window hole 2c. This window hole portion 2 c is formed along the longitudinal direction of the first terminal 2 on the center line passing through the fixed contact 3; and the window hole portion 2 c is formed in the width direction of the first terminal 2. The width is made wider than the outer circumference of the fixed contact 3. The window hole portion 2c is formed by being aligned with the outer periphery of the fixed contact 3 and rotating and cutting around it. In addition, the first terminal 2 is further provided with an inclined portion 2 d at a portion including the window hole portion 2 c, and the fixed contact 3 and the connection terminal portion 2 b are formed through the inclined portion 2 d. Connected structure. When the first terminal 2 is mounted on the casing 1, the inclined portion 2d is buried and mounted on the inner bottom of the casing 1. Similarly, the second terminal 4 is formed in a flat plate shape from a conductive metal material such as brass. A protruding portion 4 a is formed on one end of the second terminal 4 by deflection of the wall thickness by a punch or the like. The protruding portion 4 a is configured to be welded to one end portion of the bimetal 5 described below. unit. The other end of the second terminal 4 is provided with a connection terminal portion 4b which protrudes outward from the side surface portion of the case 1 and is connected to a circuit or the like of another electric device. A wide window is provided in the second terminal 4 near the protruding portion 4 a between the protruding portion 4 a and the connecting terminal portion 4 b to which the bimetal 5 described below is fastened. Part 4 c. The window hole portion 4 c is formed along the longitudinal direction of the second terminal 4 and on the center line passing through the protruding portion 4 a. The window hole portion 4 c is formed in the width direction of the second terminal 4. The width is made wider than the width of the protrusion 4a. The window hole 4 c is aligned with the outer periphery of the protrusion 4 a (please read the precautions on the back before filling this page)
、1T L# 本紙張尺度適用中國國家標準（CNS ) Α4規格（210X 297公釐） -9- 512377 A7 _ B7 ____ 五、發明説明（7) ，並圍繞著它旋轉切進而形成。 又，在上述第2端子4上，在包含上述窗孔部4 c的 部分上還設有傾斜部4 d，透過該傾斜部4 d，形成將上 述用於固緊雙金屬片5的突出部4 a和上述連接端子部 4 b相連接的結構。在將上述第2端子4裝配到上述殼體 1上時，上述傾斜部分4 d係被埋設裝配在上述殼體1的 內底部上。 如上所述，由於在上述第1和第2端子2、4上，藉 由裝設上述窗孔部2 c、4 c，而在例如輸送時或裝配時 ，使外力作用在上述連接端子部2 b、4 b上，即使有沿 板厚方向的彎曲應力等作用在這些連接端子部2 b、4 b 上，也可由上述窗孔部2 c、4 c將這應力斷開，因此能 .緩和外部應力對下述的雙金屬片5、與可動接點6’的緊固 部和固定接點3的影響，能減少對各個接點部發生位移的 影響，從而能製得溫度特性穩定的熱應動開關。 由於在包含上述窗孔部2 c、4 c的部分上設有傾斜 部2 d、4 d，而且將這傾斜部2 d、4 d部分埋設地裝 配在上述殼體1的內底部上，因此能使上述第1和第2端 子2、4的埋設部分加長；由於並沒有增大上述殼體1的 外形就能牢牢地固定，所以能適於小型化。而且在進行 焊時能防止熔劑侵入到內部。 雙金屬片5 ’係由例如電阻高的材料構成的高膨脹係 數材料、和電阻低的材料構成的低膨脹係數材料等2種熱 膨脹係數不同的金屬材料疊層接合成平板狀。構成該雙金 本紙張尺度適用中國國家標準（CNS )八4規格（210X297公釐）--- -10- (請先閱讀背面之注意事項再填寫本頁) 一裝· 訂 經濟部智慧財產局員工消費合作社印製 512377 A7 B7 五、發明説明（8) (請先閱讀背面之注意事項再填寫本頁) 屬片5自由端的一端上，能與上述固定接點3連接或脫開 、而由銀、氧化錫等構成的可動接點6，係用電氣焊接等 方法緊固著的。另一方面，另一端則用雷射焊接等方法、 緊固在上述第2端子4上所設置的上述突出部4 a上，這 時，由於上述第2端子4與上述雙金屬片5另一端的結合 部位不是整個表面，只用上述突出部4 a的部分結合，所 以在使上述雙金屬片5進行反轉動作時就不會影響動作特 性。 又，在上述雙金屬片5的中央部分，形成用來助長反 轉作用的鼓出的圓頂狀之反轉部5 a，它，由於形成這個 反轉部5 a，因而能確實可靠地保持上述雙金屬片5的溫 度特性，即、能確實可靠地進行根據溫度的反轉動作。 經濟部智慧財產局員工消費合作社印製 又，在上述雙金屬片5的另一端，在與上述第2端子 4的固緊位置的外側上，形成沿著與上述反轉部5 a形成 位置的相反一側伸出的伸出臂部5 b。該伸出臂部5 b是 在連接上述可動接點6和上述第2端子4緊固部的中心線 的垂直方向上，分別朝平面方向相對，形成一對伸出的狀 態。 又，在上述伸出臂部5 b的自由端上，在相對著的兩 個側面的兩側上形成弧狀鼓出的卡合突部5 c，藉由該卡 合突部5 c與上述殼體1上述溝部1 b的內壁部的卡合’ 就可將上述雙金屬片5導引到上述殻體1上。 又，在上述雙金屬片5的反轉部5 a和伸出臂部5 b 之間，被形成有作爲與上述第2端子4的接合部位之平坦 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） -11- 512377 A7 B7 五、發明説明（9) 部5 d。 (請先閲讀背面之注意事項再填寫本頁) 這種情況下，上述伸出臂部5 b，由於係透過與上述 第2端子4的緊固部，被延伸設置在與上述反轉部5 a的 形成位置之相反側上，所以在將上述雙金屬片5裝配到上 述殼體1裏時，能防止上述雙金屬片5的反轉部5 a的變 形，能輕易地進行裝配。 又，在上述伸出臂部5 b的自由端上，在相對著的兩 個側面的兩側上形成弧狀鼓出的卡合突部5 c，由於這個 卡合突部5 c與上述殼體1的上述溝部1 b的內壁部相卡 合，所以能有效地抑制上述雙金屬片5朝回轉方向的移動 ，能提高定位精度。 蓋子7，是用合成樹脂等絕緣材料被形成爲略呈板狀 ，被裝配在上述殼體1的開口部上，能防止塵埃和氣體對 被配設在上述殼體1內部的上述第1、第2端子2.、4、 上述雙金屬片5、上述可動接點6和固定接點3等的影響 〇 下面，說明具有上述結構的本發明熱應動開關的裝配 〇 經濟部智慧財產局員工消費合作社印製 首先，對一張以預定間隔形成導孔的帶狀金屬板進行 沖壓成形，將形成的上述第1、第2端子2、4，用嵌入 成形等方法，成一體地埋設在上述殻體1的內底部上，將 多個殼體1形成帶狀地連續形成的帶材1 1。這時，上述 各個端子2、4上，固緊上述雙金屬片5的一個端部而構 成焊接部的突出部4 a，在上述殼體1的內底面的預定位 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） " -12 - 512377 經濟部智慧財產局員工消費合作社印製 A7 B7五、發明説明（1() 置上，必須確實地凸出顯示出來，爲了使成形時不會受到 充塡於金屬模腔室內的樹脂的樹脂壓力而擺動，藉由設置 在圖中未示的金屬模（下模）上的端子導引用的導引銷， 從上述殻體1的底面側導引到裏面，該導引銷的銷迹就會 作爲上述開口部1 c、1 d而被形成在上述殼體1的底面 上。 接著’用雙金屬裝入夾具1 2吸附上述雙金屬片5的 平坦部5 d (參照第2圖、第6圖）地加以保持，在上述 殼體1上，使上述固定接點3和可動接點6相對著，而且 在一個端部與上述第2端子4的突出部4 a重合狀態下， 將上述雙金屬片5裝配到上述殼體1裏。此時，在上述雙 金屬片5上，在與上述可動接點6的緊固方向相反側上， 而且是沿著與縱長方向相垂直的方向上伸出所形成的伸出 臂部5 b ;藉由該伸出臂部5 b與上述殼體1的上述溝部 1 b相卡合，而將上述雙金屬片5導引到上述殻體1。 在此，在雙金屬裝入夾具1 2的前端係被設有擋板8 ，在將雙金屬片5裝入並加以保持的狀態下，擋板8係抵 接於與殼體1的開口部1 c位置相對應的雙金屬片5的平 坦部5 d。 接著，如第8圖和第9圖所示，從上述殼體1的上表 面開口側到上述雙金屬片5的一個端部上表面上，在焊接 時對雙金屬片5進行固定和吸熱的擋板8抵接的狀態下； 從上述殼體1的底面上所形成的上述開口部1 c，將利用 雷射照射裝置1 3所形成的焊接用的雷射X照射到上述固 本紙張尺度適用中國國家標準( CNS )八4規格（210X 297公釐） - (請先閱讀背面之注意事項再填寫本頁) _裝- 訂 --·«. -13- 512377 A7 B7 五、發明説明（11) 定端子4的底面上，使上述雙金屬片5與上述固定端子4 的突出部4 a相接合。圖中的1 4是表示裝配裝置的導引 器’ 1 5是裝配裝置的支柱，1 6是裝配裝置的底座。 迫時，如第8圖所示，藉由雷射照射而焊接的焊道所 構成的焊接部9，雖然會在固定端子4和雙金屬片5重合 的部分上，從殼體1的上述開口部1 c側朝殼體1的內側 ’被形成爲尖細的形狀，但由於由上述擋板8對這焊接部 9進行吸熱，因而雖然通過上述固定端子4，但沒到達上 述雙金屬片5的表面，能防止形成焊接不良的貫通孔的發 生’能形成穩定的焊入深度，從而能得到穩定的接合強度 〇 又’雖然在進行雷射焊接過程中，在將金屬熔融時會 發生金屬的飛散，但是在上述結構中，在將.上述雙金屬片 5與上述固疋i/而子4接合時’由於是從上述殼體1的底面 上所形成的上述開口部1 c、將焊接用的雷射X照射到上 述固定端子4的底面上，使上述雙金屬片5與上述固定端 子4的突出部4 a相接合，因而在殼體1內不會發生金屬 的飛散，不必進行將其淸除用的淸洗等工程。 又，因爲是從上述殼體1的底面上形成的上述開口部 1 C、將焊接用的雷射X照射到上述固定端子4的底面上 ，使上述雙金屬片5與上述固定端子4的突出部4 a相接 合，所以在與上述的將雙金屬片5裝入到殼體1之相同的 工程中、能將上述雙金屬片5與上述固定端子4相接合， 不會由於輸送而引起雙金屬片5的位置偏移，而能以高精 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） (請先閲讀背面之注意事項再填寫本頁) _裝· 訂 經濟部智慧財產局員工消費合作社印製 -14- 512377 A7 B7 五、發明説明（ 度地進行裝配。再者，可以使裝配工程變得簡單容易，而 能降低成本。 I-----Γ--*·裝 (請先閎讀背面之注意事項再填寫本頁) 接著’將上述蓋子7裝到上述殼體1開口部的上面側 ’從帶材1 1上將各個熱應動開關切斷而加以分離，由此 結束裝配工作。 下面’說明上述的本發明熱應動開關的動作。 在常溫和通常的使用溫度下，使被相互對向配置的上 述可動接點6和上述固定接點3相互接觸，則接點就成爲 接通的狀態。當由於某種原因，溫度從該狀態開始上升的 g舌’緊固著上述可動接點6的上述雙金屬片5上所設置的 反轉部5 a，就會隨著溫度的上升而進行反轉動作。這時 ’使緊固在上述雙金屬片5上的上述可動接點6，與上述 雙金屬片5 —起被驅動，從上述固定接點3離開，形成接 點斷開的狀態。這時，反轉了的上述雙金屬片5的上述反 轉部5 a，其鼓出部會反轉，而朝向上述固定接點3的方 向’亦即，朝著上述殼體1的內底面的方向突出。 經濟部智慧財產局員工消費合作社印製 而且，若是溫度從這狀態開始下降而回到原來的常溫 的話，上述雙金屬片5的上述反轉部5 a就會隨著溫度的 下降而使反轉部5 a回復，朝向與上述固定接點3的相反 方向突出，因而會使上述可動接點6與上述固定接點3相 接觸，形成接點被接通的狀態，回復到初始的狀態。 針對在上述本發明的熱應動開關的結構，在上述雙金 屬片5的中央部上，由於被形成有隨著溫度變化而進行反 轉時，能助長反轉作用的鼓出的圓頂狀反轉部5 a，所以 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -15- 512377 A7 _______B7 五、發明説明（1 能確實地進行反轉動作。 (請先閱讀背面之注意事項再填寫本頁) 另外’在上述殼體1的內底面上被設置有上述支持突 起部1 a。因此，當溫度下降時，萬一上述反轉部5 a因 溫度漸漸地變化（漸冷）而不反轉就回復的話，由於上述 ‘反轉部5 a係抵接於該支持突起部1 a，因而能使上述可 動接點6與上述固定接點3的接觸保持成離開的狀態，能 防止當溫度上升而再度反轉的情況下，所發生可動接點6 與固定接點3的接點振顫。 【發明的效果】 經濟部智慧財產局員工消費合作社印製 如上所述’本發明的熱應動開關，係具備有··設有有 底狀的殼體、和被配設在該殼體的內底面上的固定接點、 和具有能隨著溫度而反轉的反轉部、和在一端緊固著能與 固定接點接觸或分離的可動接點的雙金屬片、和與該雙金’ 屬片的另一端重合而成懸臂狀地加以固緊並且被配設在殼 體的內底面上的固定端子；在殼體的底部，由於形成與固 定端子和雙金屬片的重合部相對應而可以從殼體的外底面 進行雷射照射的開口部，所以與從殼體的上面開口側來照 射雷射而接合的結構相比，在殼體內不會發生金屬飛散， 而且不需要進行將其淸除的淸洗等工程。 又，在與將雙金屬片裝入殻體的相同工程中，由於可 以將雙金屬片和固定端子接合，因而不會由輸送而引起雙 金屬片的位置偏移、而能以高精度地裝配。並且使裝配工 程變得簡單、容易，能降低成本。 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） -16- 512377 A7 B7 五、發明説明（1今 又’在固定端子和雙金屬片的重合部位上，從殼體的 開口部側朝殻體內側，被形成有呈尖細狀的焊接部，由於 這個焊接部會通過固定端子而被形成在雙金屬片的厚度範 圍之內，所以能防止焊接部發生焊接不良的貫通孔，而能 形成穩定焊入深度，從而能得到穩定的接合強度。 又，由於開口部是在殼體成形時，就被設置在殼體底 部上的固定端子導引銷的銷迹，所以在殼體上沒必要形成 別的雷射照射用的開口部，從而使結構變得簡單。 【圖面之簡單說明】 第1圖是表示作爲本發明1個實施例的熱應動開關在 將蓋子卸掉後狀態的平面圖。 第2圖是表示第1圖所示的熱應動開關在將蓋子卸掉 後狀態的剖面圖。 第3圖是表示第1圖所示的熱應動開關在將蓋子卸掉 後狀態的配置著固定接點和固定端子的殼體的平面圖。 第4圖是表示第1圖所示的熱應動開關在將蓋子卸掉 後狀態的配置著固定接點和固定端子的殼體的剖面圖。 第5圖是表示第1圖所示的熱應動開關的在將蓋子卸 掉後狀態的配置著固定接點和固定端子的殼體的下視圖。 第6圖是表示第1圖所示的熱應動開關的緊固著可動 接點狀態下的雙金屬片的平面圖。 第7圖是表示第1圖所示的熱應動開關的緊固著可動 接點狀態下的雙金屬片的正視圖。 本紙張尺度適用中國國家梂李（CNS ) A4規格（21〇'〆297公釐） —-----^---^-- (請先閲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 -17 - 512377 A7 B7 五、發明説明（1与 第8圖是表示本發明的固定端子和雙金屬片的接合狀 態的示意圖。 第9圖是表示本發明的將雙金屬片裝到殻體裏時、與 固定端子的接合工程的示意圖。 第1 0圖是表示以前的將雙金屬片裝到殼體裏時、與 固定端子的接合工程的示意圖。 【符號說明】 1、殻體。la、支持突起部。lb、溝部。lc、 開口部。1 d、開口部。2、第一端子。2 b、連接端子 部。2 c '窗孔部。2 d、傾斜部。3、固定接點。4、 第二端子（固定端子）。4a、突出部。4b、連接端子 部。4 c、窗孔部。4 d、傾斜部。5、雙金屬片。5 a 、反轉部。5b、伸出臂部。5c、卡合突部。5d、平 坦部。6、可動接點。7、蓋子。8、擋板。9、焊接部 。1 1、帶材。1 2、夾具。1 3、雷射照射裝置。1 4 、導引器。15、支柱。16、底座。X、雷射光。 —----rj_裝-- (請先閲讀背面之注意事項再填寫本頁)、 1T L # This paper size is in accordance with China National Standard (CNS) A4 specification (210X 297 mm) -9- 512377 A7 _ B7 ____ 5. Description of the invention (7), and cut around it to form. Further, the second terminal 4 is further provided with an inclined portion 4 d at a portion including the window hole portion 4 c, and the protruding portion for fixing the bimetal 5 is formed through the inclined portion 4 d. 4 a is connected to the connection terminal 4 b. When the second terminal 4 is mounted on the casing 1, the inclined portion 4d is buried and mounted on the inner bottom of the casing 1. As described above, since the window holes 2 c and 4 c are installed on the first and second terminals 2 and 4, an external force is applied to the connection terminal 2 during transportation or assembly, for example. b, 4 b, even if a bending stress in the thickness direction acts on these connection terminal portions 2 b, 4 b, the stress can be cut off by the above-mentioned window hole portions 2 c, 4 c, so it can be relieved. The influence of the external stress on the bimetal 5 described below, the fastening portion with the movable contact 6 ', and the fixed contact 3 can reduce the influence of displacement on each contact portion, so that a heat with stable temperature characteristics can be obtained. Response switch. Inclined portions 2 d and 4 d are provided on a portion including the window hole portions 2 c and 4 c, and the inclined portions 2 d and 4 d are partially embedded and assembled on the inner bottom of the housing 1. The embedded portions of the first and second terminals 2 and 4 can be lengthened. Since the outer shape of the case 1 can be firmly fixed without being enlarged, it can be suitable for miniaturization. In addition, it is possible to prevent the flux from entering the inside during welding. The bimetal 5 'is a flat plate formed by laminating two kinds of metal materials having different thermal expansion coefficients, such as a high expansion coefficient material composed of a material having a high electrical resistance and a low expansion coefficient material composed of a material having a low electrical resistance. The size of the double gold paper is applicable to China National Standard (CNS) 8-4 specifications (210X297 mm) --- -10- (Please read the precautions on the back before filling this page) Printed by the employee consumer cooperative 512377 A7 B7 V. Description of the invention (8) (Please read the precautions on the back before filling this page) The free end of the metal piece 5 can be connected to or disconnected from the fixed contact 3 described above. The movable contact 6 made of silver, tin oxide, or the like is fastened by a method such as electric welding. On the other hand, the other end is fastened to the protruding portion 4 a provided on the second terminal 4 by a method such as laser welding. At this time, since the second terminal 4 and the other end of the bimetal 5 are on the other end, The bonding portion is not the entire surface, and only the portion of the protruding portion 4a is used for bonding. Therefore, when the bimetal 5 is reversed, the operation characteristics are not affected. In addition, a bulged dome-shaped reversing portion 5 a is formed in the central portion of the bimetal 5 to promote the reversing action. Since the reversing portion 5 a is formed, it can be reliably held reliably. The temperature characteristic of the bimetal 5 described above, that is, the inversion operation according to the temperature can be performed reliably and reliably. Printed by the Consumers ’Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, on the other end of the bimetal 5 and on the outer side of the fastening position with the second terminal 4, a formation along the position formed with the reversing part 5a is formed The projecting arm portion 5b projecting on the opposite side. The projecting arm portions 5b are opposed to each other in a plane direction in a vertical direction connecting the center line of the movable contact 6 and the fastening portion of the second terminal 4, respectively, and form a pair of projecting states. In addition, on the free end of the protruding arm portion 5 b, arc-shaped bulging engagement protrusions 5 c are formed on both sides of two opposite side surfaces, and the engagement protrusions 5 c and the above-mentioned The engagement of the inner wall portion of the groove portion 1 b of the case 1 can guide the bimetal 5 to the case 1. In addition, a flat surface is formed between the reversing portion 5 a of the bimetal 5 and the extending arm portion 5 b as a joint portion with the second terminal 4. The paper size is in accordance with the Chinese National Standard (CNS) A4 standard. (210X 297 mm) -11- 512377 A7 B7 V. Description of the invention (9) Section 5 d. (Please read the precautions on the back before filling in this page.) In this case, the extended arm portion 5 b is extended to the reversed portion 5 because it passes through the fastening portion with the second terminal 4. a is formed on the opposite side of the formation position, so when the bimetal 5 is assembled into the housing 1, deformation of the reversed portion 5a of the bimetal 5 can be prevented, and assembly can be easily performed. In addition, on the free end of the protruding arm portion 5b, arc-shaped bulging engagement protrusions 5c are formed on both sides of the two opposite side surfaces. Since the engagement protrusions 5c and the shell are formed, The inner wall portions of the groove portion 1 b of the body 1 are engaged with each other, so the movement of the bimetal 5 in the turning direction can be effectively suppressed, and positioning accuracy can be improved. The cover 7 is formed into a plate-like shape using an insulating material such as synthetic resin, and is mounted on the opening portion of the casing 1 to prevent dust and gas from damaging the first and first portions disposed inside the casing 1. The influence of the second terminals 2., 4, the above-mentioned bimetal 5, the above-mentioned movable contact 6, and the above-mentioned fixed contact 3. The assembly of the thermal switch of the present invention having the above-mentioned structure will be described below. Printing by consumer cooperatives First, a strip-shaped metal plate formed with guide holes at predetermined intervals is press-formed, and the formed first and second terminals 2 and 4 are embedded in the above by integral molding or the like. On the inner bottom portion of the casing 1, a plurality of casings 1 are formed into a strip 11 continuously formed in a strip shape. At this time, on each of the terminals 2 and 4, one end of the bimetal sheet 5 is fastened to form a protruding portion 4 a constituting a welding portion, and the predetermined size of the paper on the inner bottom surface of the housing 1 is in accordance with Chinese national standards ( CNS) A4 specification (210X297 mm) " -12-512377 Printed by A7 B7, Consumer Cooperative of Intellectual Property Bureau of the Ministry of Economic Affairs V. Invention Description (1 () must be prominently displayed on the display. It does not oscillate under the resin pressure of the resin filled in the cavity of the metal mold, and it is guided from the bottom surface of the casing 1 by the guide pin that is provided by the terminal guide provided on a metal mold (lower mold) not shown in the figure. When the side is guided to the inside, the pin of the guide pin is formed on the bottom surface of the housing 1 as the openings 1 c and 1 d. Then, the bimetal is inserted into the jig 12 to adsorb the bimetal. The flat portion 5 d (see FIG. 2 and FIG. 6) of the sheet 5 is held, and the fixed contact 3 and the movable contact 6 are opposed to each other on the housing 1, and at one end thereof are opposed to the first contact 5. When the protrusions 4a of the two terminals 4 are overlapped, the double gold The sheet 5 is assembled into the case 1. At this time, the bimetal sheet 5 is extended on the side opposite to the fastening direction of the movable contact 6 and extends in a direction perpendicular to the longitudinal direction. The formed extension arm portion 5 b is engaged with the groove portion 1 b of the housing 1 by the extension arm portion 5 b to guide the bimetal 5 to the housing 1. Here, A baffle 8 is provided at the front end of the bimetal loading jig 12. In a state where the bimetal 5 is loaded and held, the baffle 8 is in contact with the opening 1c of the housing 1. The flat portion 5 d of the bimetal 5 corresponding to the position. Next, as shown in FIG. 8 and FIG. 9, from the open side of the upper surface of the case 1 to the upper surface of one end of the bimetal 5 In a state in which the baffle plate 8 that fixes and absorbs the bimetal 5 during welding is in contact; from the opening portion 1 c formed on the bottom surface of the housing 1, it is formed by a laser irradiation device 13 The laser X for welding is irradiated onto the above-mentioned solid paper. The standard of China National Standards (CNS) 8-4 (210X 297 mm)-(Please read first Note on the back, please fill in this page again.) _Installation-Order --- «. -13- 512377 A7 B7 V. Description of the invention (11) The bottom surface of the fixed terminal 4 is such that the above bimetal 5 and the fixed terminal 4 The protruding parts 4a are joined. Reference numerals 14 and 14 in the figure indicate guides of the assembling device, 15 are pillars of the assembling device, and 16 are bases of the assembling device. When pressed, as shown in FIG. The welding portion 9 formed by the welding bead welded by radiation is formed on the portion where the fixed terminal 4 and the bimetal 5 overlap, and is formed from the opening 1 c side of the case 1 toward the inside of the case 1. It has a tapered shape, but because the welding portion 9 absorbs heat by the baffle 8, although it passes through the fixed terminal 4, it does not reach the surface of the bimetal 5, which can prevent the formation of through holes with poor welding. 'It can form a stable welding depth, so that a stable joint strength can be obtained.' Also, although in the laser welding process, metal scattering occurs when the metal is melted, in the above structure, the above-mentioned double When the metal piece 5 is bonded to the above-mentioned fixing element 4 Then, from the opening portion 1 c formed on the bottom surface of the housing 1, a laser X for welding is irradiated to the bottom surface of the fixed terminal 4, so that the bimetal 5 and the protruding portion 4 of the fixed terminal 4 are irradiated. Since the a is bonded, metal scattering does not occur in the housing 1, and it is not necessary to perform a cleaning process for removing the metal. In addition, since the opening 1C formed on the bottom surface of the casing 1 irradiates the welding laser X to the bottom surface of the fixed terminal 4, the bimetal piece 5 and the fixed terminal 4 protrude. The part 4a is joined, so in the same process as the above-mentioned bimetallic piece 5 is incorporated into the housing 1, the bimetallic piece 5 and the fixed terminal 4 can be joined without causing bimetallicity due to transportation. The position of the metal piece 5 is shifted, and the Chinese National Standard (CNS) A4 specification (210X297 mm) can be applied to the high-definition paper size (please read the precautions on the back before filling this page) Printed by the Consumer Cooperatives of the Property Bureau -14- 512377 A7 B7 V. Description of the invention (Assemble properly. Furthermore, it can make the assembly process simple and easy and reduce costs. I ----- Γ-* · Installation (please read the precautions on the back before filling this page). Then 'attach the cover 7 to the upper side of the opening of the case 1' and cut off each thermal switch from the strip 11 Separation, thus ending the assembly work. The following description of the above The action of the thermal switch of the present invention. When the movable contact 6 and the fixed contact 3 arranged opposite to each other are brought into contact with each other at normal temperature and normal use temperature, the contacts will be turned on. When For some reason, the g tongue that has started to rise in temperature from this state fastens the reversing portion 5 a provided on the bimetal 5 of the movable contact 6 and reverses as the temperature rises. Action. At this time, the movable contact 6 fastened to the bimetal 5 is driven together with the bimetal 5 and separated from the fixed contact 3 to form a contact disconnected state. At this time, The bulged portion of the inverted portion 5 a of the inverted bimetal 5 is reversed and protrudes toward the fixed contact 3, that is, toward the inner bottom surface of the housing 1. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, and if the temperature drops from this state and returns to the original normal temperature, the reversing part 5 a of the bimetal 5 will be reversed as the temperature decreases. Turning part 5 a replied, facing the same as above The fixed contact 3 protrudes in the opposite direction, so that the movable contact 6 and the fixed contact 3 are brought into contact with each other to form a state where the contact is turned on and return to the initial state. In response to the thermal response of the present invention described above, The structure of the switch is that in the center of the bimetal 5, a dome-shaped reversing portion 5 a that can promote the reversing effect when the reversing is performed in accordance with the temperature change is formed. The scale is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) -15- 512377 A7 _______B7 V. Description of the invention (1 Reverse operation can be surely performed. (Please read the precautions on the back before filling in this page) In addition, ' The supporting protrusion portion 1 a is provided on the inner bottom surface of the case 1. Therefore, if the temperature of the reversing portion 5 a changes due to a gradual change in temperature (cold), and the temperature does not reverse, the reversing portion 5 a comes into contact with the supporting protrusion portion 1 a. Therefore, the contact between the movable contact 6 and the fixed contact 3 can be maintained in a separated state, and the contact between the movable contact 6 and the fixed contact 3 can be prevented from occurring when the temperature rises and reverses again. Tremor. [Effects of the Invention] The consumer cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs printed the above-mentioned 'Thermal switch according to the present invention, which is provided with a bottomed casing and a casing provided in the casing. A fixed contact on the inner bottom surface, a bidirectional metal piece having a reversing portion capable of reversing with temperature, and a movable contact fastened at one end to a contact or separation with the fixed contact, and the double contact '' The other end of the metal sheet overlaps to form a cantilevered fixed terminal and is arranged on the inner bottom surface of the housing; at the bottom of the housing, since the overlapping part of the fixed terminal and the bimetal sheet are formed to correspond Since the laser irradiation opening can be performed from the outer bottom surface of the casing, compared with the structure in which the laser is irradiated and joined from the upper opening side of the casing, metal scattering does not occur in the casing. Its eradication and washing works. In addition, in the same process as when the bimetal pieces are incorporated into the housing, the bimetal pieces can be joined to the fixed terminals, so that the bimetal pieces cannot be displaced due to transportation, and can be assembled with high accuracy. . And make the assembly process simple, easy, and reduce costs. This paper size applies to Chinese National Standard (CNS) A4 specification (210X 297 mm) -16- 512377 A7 B7 V. Description of the invention (1) 'On the overlapped part of the fixed terminal and bimetal, from the opening of the casing The welded part is formed toward the inner side of the housing and has a tapered welding part. Since this welded part is formed within the thickness range of the bimetal through the fixed terminal, it can prevent through-holes in the welded part from being defectively welded. In addition, a stable welding depth can be formed, so that a stable joint strength can be obtained. In addition, since the opening portion is a pin of a fixed terminal guide pin provided on the bottom of the housing when the housing is formed, It is not necessary to form another opening for laser irradiation on the body, thereby simplifying the structure. [Simplified description of the drawing] Fig. 1 shows a thermal switch as an embodiment of the present invention when the cover is removed. A plan view of the state after being dropped. Fig. 2 is a cross-sectional view showing the state of the thermal switch shown in Fig. 1 after the cover is removed. Fig. 3 is a view showing the state of the thermal switch shown in Fig. 1 when the cover is removed. After removal A plan view of the case where the fixed contact and the fixed terminal are arranged. FIG. 4 is a cross-sectional view of the case where the fixed contact and the fixed terminal are arranged after the cover of the thermal switch shown in FIG. 1 is removed. Fig. 5 is a bottom view of the housing in which the fixed contacts and the fixed terminals are arranged after the cover is removed, showing the thermally actuated switch shown in Fig. 1. Fig. 6 is a view showing the first figure. The plan view of the bimetal sheet with the movable contact fastened as shown in Fig. 7 is a bimetal sheet with the movable contact fastened as shown in Fig. 1 Front view. This paper size applies to Chinese National Plum (CNS) A4 specification (21〇'〆297mm) —----- ^ --- ^-(Please read the notes on the back before filling in this Page) Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs -17-512377 A7 B7 V. Description of the invention (Figures 1 and 8 are diagrams showing the joint state of the fixed terminal and bimetal of the present invention. It shows the joining process with a fixed terminal when the bimetal piece is mounted in a case of this invention Schematic diagram. Figure 10 is a schematic diagram showing the previous joint process with the fixed terminal when the bimetal was installed in the case. [Symbol Description] 1. Case. La, supporting protrusion. Ib, groove. Ic 1. Opening section. 1 d. Opening section. 2. First terminal. 2 b. Connecting terminal section. 2 c 'Window hole section. 2 d. Inclined section. 3. Fixed contact. 4. Second terminal (fixed terminal). ). 4a, protruding portion. 4b, connection terminal portion. 4c, window hole portion. 4d, inclined portion. 5, bimetal. 5a, reversing portion. 5b, extended arm portion. 5c, engagement. Projection. 5d. Flat. 6. Movable contact. 7. Cover. 8. Baffle. 9. Welding. 1 1. Strip. 1 2. Fixture. 1 3. Laser irradiation device. 1 4. Guide. 15. Pillars. 16. Base. X. Laser light. —---- rj_ 装-(Please read the precautions on the back before filling this page)
、1T 經濟部智慧財產局員工消費合作社印製 • Lr. 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） -18 -, 1T Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs • Lr. This paper size applies to China National Standard (CNS) A4 (210X 297 mm) -18-