M250306 四、創作說明（1) <新型所屬之技術領域> 本創作係有關一種金屬彈片之改良結構，尤指一種可 防止按壓時產生變形，且使其與電路板的接觸更為確實之 彈片結構。 〈先前技術> 按；一般使用於行動電話、PDA等電子產品按鍵的接 觸結構’通常如圖一所示，設有一電路板1，於電路板1 設以不同位置之接點11 ，以及一設有多數金屬彈片2 1 之薄膜2，使該等金屬彈片2 1的位置與各接點呈對應位 置’俾將薄旗2貼附於電路板1後，藉由按鍵按壓於金屬 彈片21’以構成不同信號之導通，其中，該等金屬彈片 2依各廠家的設計各有不同，如公告第5 5 9 3 2 8號新 型揭示一種圓狀之金屬彈片3(如圖二、三所示），其係 將斷面設為拱形，並於頂部中央向上尖凸出一凸塊31( 或向下凹陷一凸塊），藉由該凸塊31使彈片3的下壓接 更為確實，惟無論習知金屬彈片或該已核准之新型專利 ’皆存在按鍵按壓時易產生偏斜，以及接觸點面積過小之 缺失’實也待有效改善。 <新型内容> 本創作之主要目的，即在提供一種金屬彈片之改良結 屬片係設有概呈圓狀且斷面呈拱形之金屬片構件，於該金 凹P，:心頂緣設以一浮突部，並於該浮突部的周緣設有 屬衣繞溝槽，以形成金屬片底面之環繞接觸點，使金 置於電路板並由按鍵按壓時，得以因浮突部及溝槽M250306 IV. Creation Instructions (1) < Technical Field of New Type > This creation relates to an improved structure of a metal shrapnel, especially a type that can prevent deformation when pressed and make the contact with the circuit board more reliable. Shrapnel structure. <Previous technology> Press; The contact structure of keys used in electronic products such as mobile phones and PDAs is generally shown in FIG. 1. A circuit board 1 is provided, and the circuit board 1 is provided with contacts 11 at different positions. The film 2 with a plurality of metal springs 21 is provided so that the positions of the metal springs 21 and the contacts correspond to each other. '俾 After attaching the thin flag 2 to the circuit board 1, press the metal spring 21' by pressing the button. In order to form the conduction of different signals, the metal domes 2 are different according to the design of each manufacturer. For example, the new type of bulletin No. 5 5 9 3 2 8 discloses a round metal dome 3 (as shown in Figures 2 and 3). ), The cross section is set as an arch, and a convex block 31 (or a concave recess is projected downward) is protruded upward at the center of the top, and the downward pressure contact of the elastic piece 3 is more reliable by the convex block 31 However, regardless of the conventional metal dome or the approved new patent, 'there is easy to produce deflection when the key is pressed, and the lack of a small contact point area' needs to be effectively improved. < New content > The main purpose of this creation is to provide an improved knot sheet of a metal shrapnel with a metal sheet member having a generally round shape and an arched cross-section. In the gold recess P, the heart top An edge is provided with an embossed portion, and a peripheral groove is provided on the periphery of the embossed portion to form a surrounding contact point on the bottom surface of the metal sheet. When gold is placed on the circuit board and pressed by a key, the embossed portion can be caused. Parts and grooves
〖、創作說明（2) 之牵：創：彈片呈垂直下虔以防止其產生偏斜。 繞接觸點，二於該金屬彈片底面所形成之環 盥1乐於弹片下壓時形成圈狀之接觸面，择 ί ；：：：：：；：^——«ΐ：： <實施方式> 狀且ΐ:時參閱第五圖’本創作主要係設有-概呈η ί且ί斷面呈拱形之金屬片構件4，於該金屬片構圓 中心，緣設有一浮突部41(本創作係設為=牛4的 於該浮犬部的周緣設有凹陷之環繞溝槽4 2，以形 $ 片構：4底面中央位置之環繞接觸點43; 乂成金屬 藉由前述構件的組合，構成一金屬彈片使 置於電路板（如圖一），俾當按鍵於按壓時，得以* 部4 1及其周緣之溝槽4 2的牽㈣，使金屬彈片 = :=!3防偏斜，且因底面所形成之環繞圈狀 接觸點43，加大與電路板之接觸面積，使金屬 路板間的導通更為確實，避免接觸不良之產生。 請參閲第六圖，本創作於使用時，當金屬片構件4為 上方之按鍵的按壓下沉時，由於浮突部41與溝槽42= 牽制，得以保持垂直之下壓，防止其產生偏斜，^當按壓 後，金屬片構件4底面之圈狀接觸點4 3得以大面^接觸 於電路板，使接觸導通更為確實。 綜上所述，本創作至少具備以下之優點： 1、由於金屬片構件4設有浮突部4 1及溝槽42， M250306 四、創作說明（3) 使其於按壓時，得以因溝槽4 2之牵制，保持垂直之下壓 狀態，改善習知金屬彈片易偏斜導致接觸不完全之缺失。 2、由於金屬片構件4的底面係呈環繞之接觸點4 3 ，因此，當下壓時，得以呈圈狀之大面積接觸，使金屬片 構件4與電路板接觸更為確實。 此外，本創作組裝於電子產品後，得以保持按鍵之平 整、美觀，提高產品之價值，為一實用之設計，誠屬一倶 新穎性之創作，爰依法提出專利申請，祈 鈞局予以審查 ，早日賜准專利，至感德便。〖, Creation Note (2): Creation: The shrapnel is vertically lowered to prevent it from being skewed. Around the contact point, two rings formed on the bottom surface of the metal shrapnel 1 are happy to form a ring-shaped contact surface when the shrapnel is pressed down, and select 择 :::: ;; ^ —— «ΐ :: < > Shape and ΐ: See the fifth picture 'This creation is mainly provided with a metal sheet member 4 that is roughly η ί and arched in cross section, and has a floating protrusion at the center of the circle of the metal sheet structure. 41 (This creation is set to = cattle 4 with a recessed surrounding groove 4 2 on the periphery of the floating dog section, in the shape of a $ piece structure: 4 surrounding contact point 43 at the center of the bottom surface; The combination of components constitutes a metal spring sheet to be placed on the circuit board (as shown in Figure 1). When the button is pressed, the part 41 and the peripheral groove 4 2 can be pulled to make the metal spring sheet =: =! 3 Anti-deflection, and because of the surrounding circle contact point 43 formed on the bottom surface, the contact area with the circuit board is enlarged, so that the conduction between the metal circuit boards is more reliable, and the occurrence of poor contact is avoided. Please refer to the sixth figure When this article is used, when the metal sheet member 4 is depressed by the upper button, the embossed portion 41 and the groove 42 = pinch The vertical depression can be maintained to prevent it from being deflected. ^ When pressed, the ring-shaped contact point 43 on the bottom surface of the metal sheet member 4 can be contacted with the circuit board to make the contact conduction more reliable. This creation has at least the following advantages: 1. Because the metal sheet member 4 is provided with a raised portion 41 and a groove 42, M250306 4. Creation instructions (3) It can be restrained by the groove 4 2 when it is pressed. Keep the vertical pressing state, improve the lack of contact due to the easy deflection of the metal elastic sheet. 2. Since the bottom surface of the metal sheet member 4 is a surrounding contact point 4 3, when it is pressed, it can be circled. The large-area contact makes the contact between the metal sheet member 4 and the circuit board more reliable. In addition, after the creation is assembled in the electronic product, it can keep the keys flat and beautiful, and increase the value of the product. It is a practical design. Once the novelty was created, a patent application was filed in accordance with the law, and the Bureau of Judgment examined it, granting the patent at an early date, and feeling good.
第7頁 M250306 圖式簡單說明 第一圖係習知金屬彈片與電路板組合圖。 第二、三圖係習知金屬彈片結構圖。 第四、五圖係本創作之結構圖。 第六圖係本創作之動作實施例圖。 圖號： 1 ...........電路板。 11...........接點。 2 .............薄膜。 2 1.......金屬彈片。 3 .........金屬彈片。 3 1............凸塊。 4 ........金屬片構件。 4 1..........浮突部。 4 2........ 溝槽。 4 3..........接觸點。Page 7 M250306 Brief description of the diagram The first diagram is a combination diagram of a conventional metal dome and a circuit board. The second and third figures are structural diagrams of conventional metal shrapnels. The fourth and fifth pictures are the structural diagrams of this creation. The sixth diagram is a diagram of an embodiment of the action of this creation. Drawing number: 1 ........... circuit board. 11 .............. contact. 2 ............. film. 2 1 ....... Metal shrapnel. 3 ......... metal shrapnel. 3 1 ............ Bump. 4 ........ metal sheet member. 4 1 .......... the bulge. 4 2 ........ groove. 4 3 ............. contact point.