M366109 五、新型說明： 【新型所屬之技術領域】 本創作涉及一種USB應用裝置，尤其涉及一種小型化的 USB應用裝置。 【先前技術】 USB ( Universal Serial Bus )傳輸介面由於具備有可提供 ' 使用者在使用上的便捷性、擴充性與高速傳輸等優點’因此 φ 被廣泛的應用於各種電腦週邊裝置、資訊家電產品與消費性 電子產品中，例如USB隨身碟，USB藍芽轉接器，是現今工 作場合與家庭生活中不可缺少的傳輸介面工具。 一種USB應用裝置之改良結構，如台灣專利第1288315 號，其主要以一 PCB電路板作為一連接頭之PCB承載板’PCB 承載板之頂表面係可用以承載複數個第一連接端子，而PCB 承載板之底表面與連接頭之外殼層之間則自然形成有一板底 φ 夾層，板底夾層内部可用以固設有至少一電子元件，藉此以 選擇是否縮減一 USB電子應用模組之長度’或是增加USB電 子應用模組之工作效能。另外，板底夾層内可選擇設有至少 一可與該承载板連接之支擇構造、前端保護層及其組合式之 其中之一者。藉此，該支撐構造"Sf穩固該底板夾層之結構， 防止該底板夾層受力變形之情形發生，該前端保護層可保護 該底板夾層内部之電子元件，亦 < 強化底板失層之結構。 惟，上述USB應用裴置的前端保護層與支撐構造設置於 M366109 底板夾層的邊緣，僅能支撐電路板的前端邊緣與側邊邊緣， 底板夾層的中間部分沒有任何支撐結構，當USB應用裝置插 設於上述電子產品時，對接連接器施加於電路板上的力量大 多集中在電路板中間部份，在長時間使用後，電路板中間部 份較容易因遭受外力而結構變形，進而造成USB應用裝置之 功能失常。 緣是，本創作人有感上述缺失之可改善，乃特潛心研究， 終於提出一種設計合理且有效改善上述缺失之本創作。 【新型内容】 本創作的主要目的係提供一種小型化的USB應用裝置， 可有效分散外部所施加的力量。 為實現上述目的，本創作USB應用裝置包括外殼體、電 路板與柔性承載體，外殼體設有收容電路板的容置空間，電 路板設有頂面與底面，電路板頂面設有若干接觸端子，柔性 承載體收容於外殼體的容置空間内，並設置於外殼體與電路 板底面之間，以承載電路板。 當USB應用裝置插接於對接連接器時，對接連接器施加 力量於電路板的第一端部，使其偏移並擠壓柔性承載體，柔 性承載體可在受力後產生變形，以承載電路板並分散電路板 上的力量，避免力量過於集中而損壞電路板。 【實施方式】 為詳細說明本創作之技術内容、構造特徵、所達成的目 M366109 的及功效，以下茲例舉實施例並配合圖式詳予說明。 請參閱第―圖與第二圖，第—圖係本創作腦應用裝置 100第-實施例之立體組合圖，第二圖係第一圖之立體分解 圖。腦應用裝置_為—USB界面與無線傳輸界面轉接裝 置，無線傳輸介面可為藍芽界面、RFID界面、wiFi界面、M366109 V. New Description: [New Technology Field] This creation relates to a USB application device, and more particularly to a miniaturized USB application device. [Prior Art] The USB (Universal Serial Bus) transmission interface is widely used in various computer peripheral devices and information home appliances because it has the advantages of 'convenience, expandability, and high-speed transmission.' And consumer electronics, such as USB flash drives, USB Bluetooth adapters, are indispensable transport interface tools in today's workplace and family life. An improved structure of a USB application device, such as Taiwan Patent No. 1288315, which mainly uses a PCB circuit board as a connector for a PCB carrier board. The top surface of the PCB carrier board can be used to carry a plurality of first connection terminals, and the PCB carries Between the bottom surface of the board and the outer layer of the connector, a bottom φ interlayer is naturally formed, and the inside of the bottom layer can be used to fix at least one electronic component, thereby selecting whether to reduce the length of a USB electronic application module. Or increase the working efficiency of the USB electronic application module. Alternatively, at least one of a support structure, a front end protective layer, and a combination thereof that can be coupled to the carrier plate can be selected in the bottom interlayer. Thereby, the support structure "Sf stabilizes the structure of the bottom plate interlayer to prevent the deformation of the bottom plate sandwich layer, the front end protective layer can protect the electronic components inside the bottom plate interlayer, and also the structure of the bottom plate lost layer is strengthened . However, the front end protection layer and the support structure of the above USB application device are disposed on the edge of the M366109 backplane interlayer, and can only support the front edge and the side edge of the circuit board, and the middle portion of the bottom plate interlayer does not have any supporting structure when the USB application device is inserted. When the electronic product is installed, the force applied to the circuit board by the docking connector is mostly concentrated in the middle portion of the circuit board. After a long time of use, the middle portion of the circuit board is more likely to be deformed due to external force, thereby causing USB application. The function of the device is abnormal. The reason is that this creator feels that the above-mentioned deficiency can be improved, and he is devoted to research, and finally proposes a creation that is reasonable in design and effective in improving the above-mentioned defects. [New Content] The main purpose of this creation is to provide a miniaturized USB application that effectively dissipates the forces applied from the outside. To achieve the above object, the USB application device of the present invention comprises an outer casing, a circuit board and a flexible carrier. The outer casing is provided with a receiving space for accommodating the circuit board. The circuit board is provided with a top surface and a bottom surface, and the top surface of the circuit board is provided with several contacts. The terminal, the flexible carrier is received in the accommodating space of the outer casing, and is disposed between the outer casing and the bottom surface of the circuit board to carry the circuit board. When the USB application device is plugged into the docking connector, the docking connector applies a force to the first end of the circuit board to offset and squeeze the flexible carrier, and the flexible carrier can be deformed after being loaded to carry The board dissipates the power on the board to avoid over-concentration and damage to the board. [Embodiment] In order to explain in detail the technical contents, structural features, and the achieved effects of the present invention, the embodiments are described in detail below with reference to the drawings. Please refer to the first and second figures. The first figure is a three-dimensional combination diagram of the first embodiment of the present brain application device, and the second figure is a perspective exploded view of the first figure. The brain application device is a USB interface and a wireless transmission interface switching device, and the wireless transmission interface can be a Bluetooth interface, an RFID interface, a wiFi interface,
WiMax界面與ZigBee界面等。腦應用裝置1〇〇設有外殼體 2及收容於外殼體2内的電路板4與承載體6，外殼體2由絕 緣本體8、蓋體1〇、與金屬外殼12所組成。 請-併參閱第三圖、第四圖與第九圖，絕緣本體8設有 第一側壁14、第二側壁16、底壁18、頂壁2〇、固定壁22、 第一前側壁24、第二前側壁26與前底壁28。第一側壁14、 第二側壁16、底壁18與頂壁2〇構成一本體容置空間3〇與一 後端開口 32。 固定壁22由頂壁2G内壁面朝向底壁18延伸，本實施例 中，固定壁22垂直延伸於頂壁2〇前端，固定壁22兩側邊分 別連接第-卿14與第二㈣16，第—側壁14、第二側壁 底2 18與固疋壁22之間構成一前端開口 34。第一前侧 壁24、第二前側壁26與前底壁28分別延伸於第一側壁14前 端、第二側壁16前端與底壁18前端，並構成—前端容置空 1 36第剷側壁24與第二前側壁26具有相同高度，並低 於第一側壁14與第二侧壁16。 第一側壁14之内側壁面與第二側壁16之内側壁面分別 M366109 設有導接槽38(圖中僅顯示第二側壁16内側壁面的導接槽 38)。底壁18與頂壁20之外壁面分別設有一對卡接槽40，頂 壁20與固定壁22連接處的外壁面設有與卡接槽40相互對齊 的第一導引部42。 前底壁28的外側壁面設有與卡接槽40相互對齊的第二 導引部44。本實施例中，第一導引部42為一斜面，第二導引 部44為導引槽，第二導引部44 一端連通前底壁28前緣，另 一端朝向底壁18延伸，第一前側壁24内壁面設有一凸塊46。 第一側壁14後端與第二側壁16後端之頂部與底部分別 設有固定孔48，固定孔48開設於絕緣本體8之後端開口 32 邊緣。本實施例中，前底壁28前端垂直延伸有朝上的前擋壁 50,前擋壁50兩側分別連接第一前側壁24與第二前側壁26, 並於連接處設有第三導引部52,前擋壁50頂部設有第四導引 部54，本實施例中，第三導引部52與第四導引部54分別為 一弧面，絕緣本體8係以塑膠射出成型製成。 請參閱第五圖，係蓋體10的立體視圖。蓋體10設有本 體56、固定柱58與支持部60，本體56呈板狀，本體56周 緣的形狀相對應於絕緣本體8後端開口 32的形狀。本實施例 中，絕緣本體8的後端開口 32形狀大致呈矩形，所以本體56 相對應地呈矩形板狀。 固定柱58的位置對應於絕緣本體8後端開口 32邊緣之 固定孔48的位置，本實施例中，固定孔48設置於絕緣本體8 M366109 之第一側壁14與第二側壁16的後端頂部與後端底部，所以 固定柱58分別設置於本體56兩側的頂部與底部。支持部60 與固定柱58皆設置於本體56同一面。本實施例中，支持部 60呈柱狀，蓋體10係以塑膠射出成型製成。WiMax interface and ZigBee interface. The brain application device 1 is provided with an outer casing 2 and a circuit board 4 and a carrier 6 housed in the outer casing 2. The outer casing 2 is composed of an insulating body 8, a cover 1 and a metal casing 12. Please refer to the third, fourth and ninth views, the insulating body 8 is provided with a first side wall 14, a second side wall 16, a bottom wall 18, a top wall 2, a fixed wall 22, a first front side wall 24, The second front side wall 26 and the front bottom wall 28. The first side wall 14, the second side wall 16, the bottom wall 18 and the top wall 2'' define a body receiving space 3'' and a rear end opening 32. The fixed wall 22 extends from the inner wall surface of the top wall 2G toward the bottom wall 18. In this embodiment, the fixed wall 22 extends perpendicularly to the front end of the top wall 2, and the two sides of the fixed wall 22 are connected to the first and second (four) 16, respectively. - A front end opening 34 is formed between the side wall 14, the second side wall bottom 2 18 and the solid wall 22. The first front side wall 24, the second front side wall 26 and the front bottom wall 28 respectively extend from the front end of the first side wall 14, the front end of the second side wall 16 and the front end of the bottom wall 18, and constitute a front end receiving space 136. It has the same height as the second front side wall 26 and is lower than the first side wall 14 and the second side wall 16. The inner side wall surface of the first side wall 14 and the inner side wall surface of the second side wall 16 are respectively provided with guiding grooves 38 (only the guiding grooves 38 of the inner side wall surface of the second side wall 16 are shown). A pair of engaging grooves 40 are respectively defined in the outer wall surface of the bottom wall 18 and the top wall 20, and the outer wall surface at the junction of the top wall 20 and the fixed wall 22 is provided with a first guiding portion 42 which is aligned with the engaging groove 40. The outer side wall surface of the front bottom wall 28 is provided with a second guiding portion 44 which is aligned with the engaging groove 40. In this embodiment, the first guiding portion 42 is a sloped surface, the second guiding portion 44 is a guiding groove, and the second guiding portion 44 has one end communicating with the front edge of the front bottom wall 28 and the other end extending toward the bottom wall 18, A convex block 46 is disposed on an inner wall surface of a front side wall 24. The rear end of the first side wall 14 and the top and bottom of the rear end of the second side wall 16 are respectively provided with fixing holes 48, and the fixing holes 48 are formed at the edge of the rear end opening 32 of the insulating body 8. In this embodiment, the front end wall 28 has a front end wall 50 extending upwardly from the front end of the front bottom wall 28, and the first front side wall 24 and the second front side wall 26 are respectively connected to the two sides of the front side wall 50, and a third guide is provided at the joint. In the embodiment, the third guiding portion 52 and the fourth guiding portion 54 are respectively a curved surface, and the insulating body 8 is formed by plastic injection molding. production. Please refer to the fifth figure, which is a perspective view of the cover 10. The cover 10 is provided with a body 56, a fixing post 58 and a support portion 60. The body 56 has a plate shape, and the shape of the periphery of the body 56 corresponds to the shape of the rear end opening 32 of the insulative housing 8. In this embodiment, the rear end opening 32 of the insulative housing 8 has a substantially rectangular shape, so that the body 56 has a rectangular plate shape correspondingly. The position of the fixing post 58 corresponds to the position of the fixing hole 48 at the edge of the rear end opening 32 of the insulative housing 8. In the embodiment, the fixing hole 48 is disposed at the top end of the first side wall 14 and the second side wall 16 of the insulative housing 8 M366109. And the bottom of the rear end, so the fixing posts 58 are respectively disposed at the top and the bottom of both sides of the body 56. The support portion 60 and the fixing post 58 are disposed on the same surface of the body 56. In this embodiment, the support portion 60 has a columnar shape, and the cover body 10 is formed by injection molding of plastic.
請參閱第六圖，電路板4設有相對的頂面62與底面64 及相對的第一端部66與第二端部68。電路板4位於頂面62 的第一端部66處設有四個接觸端子70，其功能分別為VCC 電源線路、GND電源線路、D+資料線路與D-資料線路，以符 合USB之標準規範。電路板4之底面64設有至少一積體電路 72 ( Integrated Circuit, 1C )，本實施例中，積體電路72設置於 第一端部66與第二端部68之間。 請一併參閱第七圖，係積體電路72之方塊圖。積體電路 72包括至少一 USB界面74、至少一無線傳輸界面76與一轉 換單元78，轉換單元78連接於USB界面74與無線傳輸界面 76之間，用以將USB界面74之資料轉成無線傳輸界面76之 資料，並將無線傳輸界面76之資料轉成USB界面74之資料。 積體電路72之USB界面74電性連接四個接觸端子70。 電路板4的頂面62在位於第二端部68處設有天線80， 其電性連接積體電路72之無線傳輸界面76,用以接收無線傳 輸界面76發出的資料並轉成無線訊號，並可接收無線訊號並 轉成資料送至無線傳輸界面76。 電路板4頂面62的中間部分與第一端部66底面64分別 M366109 設有多個電子元件82。為了提高天線80效能，電路板4的第 二端部68底面64相對於天線80設置位置的區域未設置任何 電子元件82，以避免對天線80產生電氣干擾。電路板4第一 端部66 —側邊設有定位槽84。 請參閱第八圖，金屬外殼12設有相對的頂板86與底板 88及相對的兩側板90，兩側板90分別連接於頂板86兩側與 底板88兩側。金屬外殼12的頂板86與底板88分別設有一 對卡榫92 (圖中僅表示頂板86之卡榫92)。 承載體6由柔性材質製成，可在受力後產生變形，以分 散力量，本實施例中，承載體6可為麥拉（Mylar)、橡膠或軟 性塑膠等。 當USB應用裝置100組裝時，先將承載體6設置於絕緣 本體8之前端容置空間36内，接著，電路板4由第一端部66 開始***絕緣本體8的後端開口 32，電路板4兩側邊分別卡 入於絕緣本體8的導接槽38内，藉由導接槽38導引，電路 板4可組裝於絕緣本體8中。 當電路板4完全收容於絕緣本體8内時，電路板4側邊 卡入於絕緣本體8的導接槽38内，以對電路板4定位，避免 電路板4相對於絕緣本體8產生上下方向位移。電路板4兩 側邊分別抵接絕緣本體8的第一側壁14内側壁面、第二側壁 16内側壁面、第一前側壁24内側壁面與第二前側壁26内側 壁面，以避免電路板4相對於絕緣本體8產生左右方向位移。 M366109 電路板4的第二端部68收容於絕緣本體8的本體容置空 間内，電路板4的第一端部66收容於絕緣本體8的前端 谷置空間36内，並設置於承載體6上方。承載體6覆蓋電路 板4的第一端部66底面64。絕緣本體8的凸塊46卡合於電 路板4的定位槽84 Θ，以對電路板4定位，避免電路板4相 對於絕緣本體8產生前後方向之位移。接觸端子70曝露於絕 緣本體8外部。 電路板4中間部分與積體電路72夾在絕緣本體8的前端 開口 34中，積體電路72可支撐電路板4，絕緣本體8的固定 壁22抵接電路板4的頂面62中間部分，藉此抵頂固定住電 路板4。 之後’蓋體10的固定柱58卡入絕緣本體8之固定孔48, 使蓋體10封住絕緣本體8之後端開口 32。蓋體1〇的支持部 60支撐電路板4的第二端部68，以加強電路板4之結構。蓋 體10的支持部60頂面與絕緣本體8的導接槽38位於同一平 面’以對電路板4定位，使電路板4水平置於絕緣本體8内 部。 硐後，電路板4的第一端部66及絕緣本體8的第一前側 壁24、第二前側壁26與前底壁28***金屬外殼12内，金屬 外殼12之卡92經由絕緣本體8的第一導引部42與第二導 引口M4導引了抓暢地卡合於卡接槽4〇 β，使絕緣本體8與 金屬外殼12相互固定結合。 M366109 最後，金屬外殼12包覆電路板4的第一端部66及絕緣 本體8的第一前側壁24、第二前側壁26與前底壁28，並一 起構成標準USB A-Type連接器，使USB應用裝置1可符合 USB標準規範，且金屬外殼12亦可提升USB應用裝置1〇〇 的結構強度。 當USB應用裝置1〇〇插接於對接連接器（圖中未示）時， 藉由絕緣本體8的第三導引部52與第四導引部54之導引， 對接連接器可流暢地被導引並***電路板4頂面62與金屬外 殼12之間的夾層中，使對接連接器的對接端子抵接電路板4 頂面62的接觸端子70。 當對接連接器抵接電路板4的第一端部66頂面62時， 對接連接器的對接端子會施加力量在電路板4的第—端部％ 上’電路板4的第—端部66受力後會朝絕緣本體8的前底壁 28偏移，並擠壓承載體6，而承載體6可在受力後產生變形， 以承載電路板4並分散接連接器所施加的力量。 請參閱第十圖 係本創作USB應用裝置1〇〇第二實施例 之立體組合圖。在本實施例中，絕緣本體8未設置前擋壁5〇， 承載體6可固定於絕緣本體8的前底壁28内壁面。當電路板 4完全收容於絕緣本體8内時，承載體6還可對電路板4定位。 當USB應用裴置1 〇〇插接於對接 耵接連接器時，承載體ό還 可保護電路板4底面的電子元件82，避备 Τ 避免電子元件82被對接 連接器破壞。 M366109 由以上結構說明後可知，當電路板4的第一端部66受到 外力，而朝絕緣本體8的前底壁28偏移並擠壓承載體6時， 承載體6可在受力後產生變％，以承載電路板4並分散外力， 避免外力過於集中進而損壞電路板4。另外，承载體6還可保 護電路板4底面的電子元件82,避免電子元件82被對接連接 器破壞。 【圖式簡單說明】 第一圖係本創作USB應用裝置第一實施例之立體組合 圖。 第二圖係本創作USB應用裝置第一實施例之立體分解 圖。 第三圖係本創作USB應用裝置第一實施例絕緣本體之局 部剖視圖。 第四圖係本創作USB應用裝置第一實施例絕緣本體之後 方視圖。 第五圖係本創作USB應用裝置第一實施例之蓋體之立體 視圖。 第六圖係本創作USB應用裝置第一實施例之電路板之示 意圖。 第七圖係本創作USB應用裝置第一實施例之積體電路之 方塊圖。 第八圖係本創作USB應用裝置第一實施例之金屬外殼之 11 M366109 立體圖。 第九圖係係第一圖中延κ-κ之剖面圖。 第十圖係本創作USB應用裝置第二實施例之立體組合 圖。 【主要元件符號說明】 USB應用裝置 100 外殼體 2 電路板 4 承載體 6 絕緣本體 8 蓋體 10 金屬外殼 12 第一側壁 14 第二側壁 16 底壁 18 頂壁 20 固定壁 22 第一前側壁 24 第二前側壁 26 前底壁 28 本體容置空間 30 後端開口 32 前端開口 34 前端容置空間 36 導接槽 38 卡接槽 40 第一導引部 42 第二導引部 44 凸塊 46 固定孔 48 前擔壁 50 第三導引部 52 第四導引部 54 本體 56 固定柱 58 支持部 60 頂面 62 底面 64 第一端部 66 12 M366109 第二端部 68 接觸端子 70 積體電路 72 USB界面 74 無線傳輸界面 76 轉換單元 78 天線 80 電子元件 82 定位槽 84 頂板 86 底板 88 側板 90 卡榫 92Referring to the sixth drawing, the circuit board 4 is provided with opposite top surfaces 62 and bottom surfaces 64 and opposite first end portions 66 and second end portions 68. The circuit board 4 is provided at the first end portion 66 of the top surface 62 with four contact terminals 70, which function as a VCC power line, a GND power line, a D+ data line and a D-data line, respectively, to comply with the USB standard specification. The bottom surface 64 of the circuit board 4 is provided with at least one integrated circuit 72 (Integrated Circuit, 1C). In this embodiment, the integrated circuit 72 is disposed between the first end portion 66 and the second end portion 68. Please refer to the seventh figure together with the block diagram of the integrated circuit 72. The integrated circuit 72 includes at least one USB interface 74, at least one wireless transmission interface 76 and a conversion unit 78. The conversion unit 78 is connected between the USB interface 74 and the wireless transmission interface 76 for converting the data of the USB interface 74 into a wireless interface. The information of the interface 76 is transmitted, and the data of the wireless transmission interface 76 is converted into the data of the USB interface 74. The USB interface 74 of the integrated circuit 72 is electrically connected to the four contact terminals 70. The top surface 62 of the circuit board 4 is disposed at the second end portion 68. The antenna 80 is electrically connected to the wireless transmission interface 76 of the integrated circuit 72 for receiving the data sent by the wireless transmission interface 76 and converting the wireless signal into a wireless signal. The wireless signal can be received and converted into a data transmission interface 76. The middle portion of the top surface 62 of the circuit board 4 and the bottom surface 64 of the first end portion 66 are respectively provided with a plurality of electronic components 82. In order to improve the performance of the antenna 80, the area of the bottom surface 64 of the second end portion 68 of the circuit board 4 relative to the position where the antenna 80 is disposed is not provided with any electronic components 82 to avoid electrical interference with the antenna 80. The first end portion 66 of the circuit board 4 is provided with a positioning groove 84 at its side. Referring to the eighth figure, the metal casing 12 is provided with an opposite top plate 86 and a bottom plate 88 and opposite side plates 90. The two side plates 90 are respectively connected to both sides of the top plate 86 and the two sides of the bottom plate 88. The top plate 86 and the bottom plate 88 of the metal casing 12 are respectively provided with a pair of latches 92 (only the latches 92 of the top plate 86 are shown). The carrier 6 is made of a flexible material and can be deformed after being stressed to disperse the force. In this embodiment, the carrier 6 can be Mylar, rubber or soft plastic. When the USB application device 100 is assembled, the carrier 6 is first disposed in the front end receiving space 36 of the insulative housing 8. Then, the circuit board 4 is inserted into the rear end opening 32 of the insulative housing 8 from the first end portion 66, the circuit board. The two sides are respectively inserted into the guiding grooves 38 of the insulative housing 8 and guided by the guiding slots 38, and the circuit board 4 can be assembled in the insulative housing 8. When the circuit board 4 is completely received in the insulative housing 8, the side of the circuit board 4 is engaged in the guiding slot 38 of the insulative housing 8 to position the circuit board 4 to prevent the circuit board 4 from being up and down relative to the insulative housing 8. Displacement. The two sides of the circuit board 4 respectively abut the inner side wall surface of the first side wall 14 of the insulative housing 8, the inner side wall surface of the second side wall 16, the inner side wall surface of the first front side wall 24 and the inner side wall surface of the second front side wall 26, so as to avoid the circuit board 4 from being opposite to the side wall surface. The insulating body 8 is displaced in the left-right direction. The second end portion 68 of the circuit board 4 is received in the body accommodating space of the insulative housing 8. The first end portion 66 of the circuit board 4 is received in the front end gusset space 36 of the insulative housing 8 and disposed on the carrier 6 Above. The carrier 6 covers the bottom surface 64 of the first end 66 of the circuit board 4. The bumps 46 of the insulative housing 8 are engaged with the positioning slots 84 of the circuit board 4 to position the circuit board 4 to prevent the circuit board 4 from being displaced in the front-rear direction with respect to the insulative housing 8. The contact terminal 70 is exposed to the outside of the insulating body 8. The intermediate portion of the circuit board 4 and the integrated circuit 72 are sandwiched in the front end opening 34 of the insulative housing 8, and the integrated circuit 72 can support the circuit board 4. The fixed wall 22 of the insulative housing 8 abuts the middle portion of the top surface 62 of the circuit board 4. Thereby, the circuit board 4 is fixed by the top. Thereafter, the fixing post 58 of the cover 10 is snapped into the fixing hole 48 of the insulative housing 8, so that the cover 10 seals the rear end opening 32 of the insulative housing 8. The support portion 60 of the cover 1 supports the second end portion 68 of the circuit board 4 to reinforce the structure of the circuit board 4. The top surface of the support portion 60 of the cover 10 is located on the same plane as the guide groove 38 of the insulative housing 8 to position the circuit board 4 such that the circuit board 4 is horizontally placed inside the insulative housing 8. After that, the first end portion 66 of the circuit board 4 and the first front side wall 24, the second front side wall 26 and the front bottom wall 28 of the insulative housing 8 are inserted into the metal casing 12, and the card 92 of the metal casing 12 is passed through the insulating body 8. The first guiding portion 42 and the second guiding port M4 are guided to be smoothly engaged with the engaging grooves 4β, so that the insulating body 8 and the metal casing 12 are fixedly coupled to each other. M366109 Finally, the metal casing 12 covers the first end portion 66 of the circuit board 4 and the first front side wall 24, the second front side wall 26 and the front bottom wall 28 of the insulative housing 8, and together form a standard USB A-Type connector. The USB application device 1 can be made to comply with the USB standard specification, and the metal casing 12 can also enhance the structural strength of the USB application device. When the USB application device 1 is inserted into the docking connector (not shown), the docking connector can be smoothly guided by the guiding of the third guiding portion 52 and the fourth guiding portion 54 of the insulative housing 8 It is guided and inserted into the interlayer between the top surface 62 of the circuit board 4 and the metal casing 12 such that the mating terminal of the mating connector abuts the contact terminal 70 of the top surface 62 of the circuit board 4. When the docking connector abuts the top surface 62 of the first end 66 of the circuit board 4, the mating terminal of the mating connector applies force to the first end portion 66 of the circuit board 4 at the first end portion of the circuit board 4. After being stressed, it will be offset toward the front bottom wall 28 of the insulative housing 8, and the carrier 6 will be squeezed, and the carrier 6 can be deformed after being stressed to carry the circuit board 4 and disperse the force exerted by the connector. Please refer to the tenth figure for a stereoscopic combination diagram of the second embodiment of the USB application device. In the present embodiment, the insulative housing 8 is not provided with a front retaining wall 5〇, and the carrier 6 can be fixed to the inner wall surface of the front bottom wall 28 of the insulative housing 8. When the circuit board 4 is completely housed in the insulative housing 8, the carrier 6 can also position the circuit board 4. When the USB application device 1 is plugged into the docking connector, the carrier body can also protect the electronic component 82 on the bottom surface of the circuit board 4, avoiding the electronic component 82 being damaged by the docking connector. M366109 is explained by the above structure. When the first end portion 66 of the circuit board 4 is subjected to an external force and is offset toward the front bottom wall 28 of the insulative housing 8 and the carrier 6 is pressed, the carrier 6 can be generated after being stressed. Change % to carry the circuit board 4 and disperse the external force to avoid excessive concentration of the external force and damage the circuit board 4. In addition, the carrier 6 can also protect the electronic components 82 on the bottom surface of the circuit board 4 from the destruction of the electronic components 82 by the docking connectors. BRIEF DESCRIPTION OF THE DRAWINGS The first figure is a three-dimensional combination of the first embodiment of the present USB application device. The second figure is a perspective exploded view of the first embodiment of the present USB application device. The third figure is a partial cross-sectional view of the insulative body of the first embodiment of the present USB application device. The fourth figure is a rear view of the insulating body of the first embodiment of the present USB application device. The fifth figure is a perspective view of the cover of the first embodiment of the present USB application device. The sixth drawing is an illustration of the circuit board of the first embodiment of the present USB application device. The seventh drawing is a block diagram of the integrated circuit of the first embodiment of the present USB application device. The eighth figure is a perspective view of the 11 M366109 of the metal casing of the first embodiment of the USB application device. The ninth figure is a cross-sectional view of the κ-κ in the first figure. The tenth figure is a three-dimensional combination diagram of the second embodiment of the present USB application device. [Main component symbol description] USB application device 100 Outer casing 2 Circuit board 4 Carrier 6 Insulating body 8 Cover 10 Metal casing 12 First side wall 14 Second side wall 16 Bottom wall 18 Top wall 20 Fixed wall 22 First front side wall 24 Second front side wall 26 Front bottom wall 28 Main body accommodating space 30 Rear end opening 32 Front end opening 34 Front end accommodating space 36 Leading groove 38 Snap groove 40 First guiding portion 42 Second guiding portion 44 Bump 46 Fixed Hole 48 front wall 50 third guide 52 fourth guide 54 body 56 fixing post 58 support portion 60 top surface 62 bottom surface 64 first end portion 66 12 M366109 second end portion 68 contact terminal 70 integrated circuit 72 USB interface 74 Wireless transmission interface 76 Conversion unit 78 Antenna 80 Electronic component 82 Positioning slot 84 Top plate 86 Base plate 88 Side plate 90 Card 92
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