201143966 六、發明說明： 【發明所屬之技術領域】 [0001] 本發明涉及一種磁力座。 [先前技術] [0002] 磁力座由於價格便宜、裝夾快速方便，而廣泛應用於校 準、測量或附件安裝之場合。習知之磁力座磁力強弱不 可調節，當用戶需要不同大小磁力時，比如調整工件位 置時要求磁力弱一些，使工件既能吸附於設備上，又能 用微小外力使其移動，待調整完畢後，又要求磁力變強 〇 ，使工件被牢牢固定雨不會移動，由於磁力座之磁力大 小不可調節，僅能控制其有無磁力，導致用戶不得不放 • 棄使用磁力座，而採用其、他昂貴之裝夾治具。 【發明内容】 [0003] 有鑑於此，有必要提供一種能調節磁力大小之磁力座。 [0004] —種磁力座，其包括磁性件、用於放翼待固定工件之固 定件及由導磁材質製成之遮罩組隹，遮罩組件包括罩體 及遮板，磁性件收容於罩體$ ’罩體開設有對應於磁性 件之其中一極之通孔，遮板與罩體摩擦性接觸且相對罩 體可活動地遮蔽至少部分通孔，固定件固設於遮罩組件 外且對應於通孔。 [0005] 該磁力座使用時’當需要調節磁力座之磁力大小時，改 變遮板遮蔽通孔之面積之多少，由於穿過遮板之磁力線 於遮罩組件内形成封閉之回路，從而可遮蔽部分磁力線 ’使磁力座之磁力發生改變。藉由設置罩體及遮板，遮 板可選擇性地遮罩部分甚至幾乎全部之磁場，從而可調 099118979 表單編號A0101 第3頁/共13頁 0992033589-0 201143966 節磁力座之磁力大小。 【實施方式】 [_ 了面以具體實施方式並結合附圖對本發明實施方式提供 之磁力座作進一步詳細說明。 剛請參閱圖1及圖2，本發明實施方式之磁力座⑽包括外殼 3〇、遮罩組件50及磁性件7〇。 _]外殼30包括主體32及固定件34。本實施方式中，外殼3〇 大體為矩形方體。主體32包括底板（圖未標）及四自底 板之邊緣垂直延伸之侧板321。其中一侧板321上開設有 長條形之導向孔323。該侧板321上鄰近導向孔323處還 °又有複數定位件3 2 5。定位件3 2 5位於導向孔3 2 3之一側 且沿導向孔323之延伸方向依次排布。主體32由不導磁之 材質製成，本實施方式中，主體32由銅製成。固定件34 固定於四側板321遠離底板之一端。本實施方式中，固定 件34由軟鐵製成。 [0009] 請同時參閱圖3，遮罩組件50包括罩體52、遮板54、滑軌 55、連接件56及操作件58。罩體52及遮板54均由導磁材 質製成。罩體52形狀與外殼30形狀相似，且尺寸比外殼 30稍小，其收容於外殼3〇内。罩體52由六遮罩板組 成。罩體52對應於固定件34之一遮罩板522上開設有通孔 524。本實施方式中。通孔524為方形。遮板54包括遮蔽 部541及固定部543。遮蔽部541大體為板狀，其形狀及 大小與通孔524大體相同，可覆蓋通孔524。滑軌55之數 量為二’二滑軌55均固設於遮罩板522，且分別位於通孔 099118979 524之兩端。滑軌55之延伸方向與導向孔323之 表單編號A0101 第4頁/共13頁 延伸方向 0992033589-0 201143966 [0010] ο 大體相同。遮板54之遮蔽部541之兩端分別設於二滑_ 使遮板54…月軌55可滑動，從而使遮板54藉由摩擦接 觸之方式連接至遮罩板522，且可任意調節遮蔽部⑷覆 蓋通孔524之面狀大小。蚊部⑷連接絲部541且 位於罩體52之外侧本實施方式中，二滑軌财採用焊 接之方式固定至遮軍板522，以使遮罩組㈣之罩體似 遮板54之間能藉由滑軌55維持表面之連續性，進而能遮 罩磁場時保持較佳之磁連續性。 連接件56包括第-連接部_、分別自第—連接部阳之， 兩端垂直延伸之第二連接部564及第三連接部566。第二 連接部564及第三連接部566分別向第一連接部⑽之不 同側延伸。第二連接部564遠離第一連接部⑽之一端與 遮板54之ID定。卩543固連。第三連接部㈣遠離第一連接 部562之-端自導向孔323突出於罩體㈣。操作件㈣ 於罩體52外且與第三連接部566轉動連接。操作件58可選 擇性地固定於複數定位件325真中之一。 ...... .:〆：...： 〇 [0011] : · ,：.. ... 磁性件70為永久磁^本實施⑽_，磁性件7()大體為 長條形。當然’磁性件70亦可為U型等其他形狀。磁性件 7〇收容於罩體52内，且其—極對應於通孔524。 [0012] 使用時，將工件（圖未示）放置於固定件34上，扳動操 作件58並藉由U定於操作件58上之連接件π帶動遮板 相對罩體52之遮罩板522滑動，使遮板54之遮蔽部541不 再遮蔽通孔524 ’從而磁性件70之磁力線可穿過通孔524 將固定件34磁化’進而將工件吸附於磁力座1〇〇。 099118979 表單編號A0101 第5頁/社= 、d 頁 0992033589-0 201143966 [0013] S黾要調節磁力座100之磁力大小時，轉動操作件μ ,使 其不再固定於定位件325，扳動連接件56 ’帶動遮罩板 522滑動’使遮板54遮蔽部分通孔524，從而使穿過遮板 5 4之磁力線於遮罩組件5 〇内形成封閉之回路，從而可遮 蔽部分磁力線’使磁力座1〇〇之磁力變小。 [0014] 當遮板54完全遮蔽通孔524時，絕大多數之磁力線均被遮 罩組件50遮罩，磁力座1〇〇顯示極弱之磁性或不顯示磁性 〇 [0015] 藉由設置罩體52、遮板54可選擇性地遮罩部分甚至幾乎 4 全部之磁場’從而可調節磁力座1Q0之磁力大小，使用較 方便。 [0016] 可理解，遮板54不限於採用滑軌來滑動地設於遮罩板522 ’僅需遮板54使用摩擦組件設置於遮罩板522，使遮板54 與遮罩板522之間保持良好之接觸即可。 [0017] 可理解，操作件58與定位件325之間還可採用嚙合方式進 行配合’即將操作件58更換為齒輪，將定位件325改為沿 導向孔323延伸方向延伸之且與齒輪嚙合之齒條，使齒輪 * 沿齒條運動即可帶動遮板5 4運動。 [0018] 可理解’外殼30之主體32可省略，此時直接將固定件34 固設於罩體52之一側，使固定件34與通孔524相對即可。 [0019] 綜上所述，本發明確已符合發明專利之要件，爰依法提 出專利申請。惟’以上所述者僅為本發明之較佳實施方 式，本發明之範圍並不以上述實施方式為限，舉凡熟悉 本案技藝之人士援依本發明之精神所作之等效修飾或變 099118979 表單編號 A0101 第 6 頁/共 13 頁 0992033589-0 201143966 [0020] 化，皆應涵蓋於以下申請專利範圍内。 【圖式簡單說明】 圖1係本發明實施方式之磁力座之立體組裝圖 [0021] 圖2係沿圖1中II-II線之剖視圖。 [0022] 圖3係圖1所示磁力座之遮罩組件之立體圖。 [0023] 【主要元件符號說明】 磁力座：100 [0024] f) [0025] 外殼：30 主體：32 . [0026] 側板：321 [0027] 導向孔：323 [0028] 定位件：325 [0029] 固定件：34 [0030] 遮罩組件：5 0 U [0031] 罩體：52 [0032] 遮罩板：522 [0033] 通孔：524 [0034] 遮板：54 [0035] 遮蔽部：541 [0036] 固定部：543 099118979 表單編號A0101 第7頁/共13頁 0992033589-0 201143966 [0037] 滑軌：55 [0038] 連接件：56 [0039] 第一連接部：562 [0040] 第二連接部：564 [0041] 第三連接部：566 [0042] 操作件：58 [0043] 磁性件：70 099118979 表單編號 A0101 第 8 頁/共 13 頁 0992033589-0201143966 VI. Description of the Invention: [Technical Field of the Invention] [0001] The present invention relates to a magnetic seat. [Prior Art] [0002] The magnetic base is widely used for calibration, measurement, or accessory installation because of its low price and quick and convenient clamping. The magnetic strength of the magnetic base can not be adjusted. When the user needs different magnetic forces, such as adjusting the position of the workpiece, the magnetic force is required to be weak, so that the workpiece can be adsorbed on the device and can be moved by a small external force. After the adjustment is completed, It is also required that the magnetic force becomes stronger, so that the workpiece is firmly fixed and the rain does not move. Since the magnetic force of the magnetic seat can not be adjusted, only the magnetic force can be controlled, so that the user has to put away the use of the magnetic seat, and adopts him and him. Expensive fixtures. SUMMARY OF THE INVENTION [0003] In view of the above, it is necessary to provide a magnetic seat capable of adjusting the magnitude of a magnetic force. [0004] A magnetic seat comprising a magnetic member, a fixing member for attaching a workpiece to be fixed to the wing, and a mask group made of a magnetically permeable material, the mask assembly comprising a cover body and a shutter, the magnetic member being received The cover body is formed with a through hole corresponding to one of the magnetic members, the shutter is in frictional contact with the cover body and the cover body is movably shielded from at least a portion of the through hole, and the fixing member is fixed outside the cover assembly And corresponds to the through hole. [0005] When the magnetic seat is used, when the size of the magnetic force of the magnetic seat needs to be adjusted, the area of the shielding through hole is changed, and the closed circuit is formed in the mask assembly by the magnetic lines of force passing through the shielding plate, thereby shielding Part of the magnetic field line 'changes the magnetic force of the magnetic seat. By arranging the cover and the shutter, the shield can selectively cover some or even almost all of the magnetic field, thereby being adjustable. 099118979 Form No. A0101 Page 3 of 13 0992033589-0 201143966 The magnetic force of the magnetic seat. [Embodiment] The magnetic seat provided by the embodiment of the present invention will be further described in detail with reference to the accompanying drawings. Referring to Figures 1 and 2, a magnetic seat (10) according to an embodiment of the present invention includes a housing 3, a mask assembly 50, and a magnetic member 7''. The outer casing 30 includes a main body 32 and a fixing member 34. In the present embodiment, the outer casing 3 is substantially rectangular. The main body 32 includes a bottom plate (not shown) and four side plates 321 extending perpendicularly from the edge of the bottom plate. The one side plate 321 is provided with an elongated guide hole 323. The side plate 321 is further provided with a plurality of positioning members 3 2 5 adjacent to the guiding holes 323. The positioning members 3 2 5 are located on one side of the guide holes 3 2 3 and are sequentially arranged in the extending direction of the guide holes 323. The main body 32 is made of a material that is not magnetically conductive. In the present embodiment, the main body 32 is made of copper. The fixing member 34 is fixed to the four side plates 321 away from one end of the bottom plate. In the present embodiment, the fixing member 34 is made of soft iron. Referring to FIG. 3 at the same time, the mask assembly 50 includes a cover 52, a shutter 54, a slide rail 55, a connecting member 56, and an operating member 58. Both the cover 52 and the shutter 54 are made of a magnetic conductive material. The cover 52 has a shape similar to that of the outer casing 30 and is slightly smaller in size than the outer casing 30, and is housed in the outer casing 3''. The cover 52 is composed of a six-mask. The cover 52 has a through hole 524 formed in the mask plate 522 corresponding to one of the fixing members 34. In the present embodiment. The through hole 524 is square. The shutter 54 includes a shielding portion 541 and a fixing portion 543. The shielding portion 541 is substantially plate-shaped and has substantially the same shape and size as the through hole 524, and can cover the through hole 524. The number of the slide rails 55 is two's and the two slide rails 55 are fixed to the mask plate 522 and are respectively located at the ends of the through holes 099118979 524. The direction in which the slide rail 55 extends and the guide hole 323 is shown in the form number A0101. Page 4 of 13 Extension direction 0992033589-0 201143966 [0010] ο Generally the same. The two ends of the shielding portion 541 of the shutter 54 are respectively disposed on the two sliding sheets _ such that the shutter 54 is slidable, so that the shutter 54 is connected to the mask panel 522 by frictional contact, and the shielding can be arbitrarily adjusted. The portion (4) covers the planar size of the through hole 524. The mosquito portion (4) is connected to the wire portion 541 and is located outside the cover 52. In the present embodiment, the two slide rails are fixed to the shield plate 522 by welding so that the cover of the mask group (4) can be like the shutter 54 The continuity of the surface is maintained by the slide rails 55, thereby maintaining better magnetic continuity when the magnetic field is masked. The connecting member 56 includes a first connecting portion _, a second connecting portion 564 extending perpendicularly from both ends of the first connecting portion, and a third connecting portion 566 extending perpendicularly from both ends. The second connecting portion 564 and the third connecting portion 566 respectively extend to different sides of the first connecting portion (10). The second connecting portion 564 is away from one end of the first connecting portion (10) and the ID of the shutter 54.卩 543 solid. The end of the third connecting portion (4) away from the first connecting portion 562 protrudes from the guiding hole 323 to the cover body (four). The operating member (4) is outside the cover 52 and is rotatably coupled to the third connecting portion 566. The operating member 58 is selectively affixed to one of the plurality of positioning members 325. ......::〆:...: 〇 [0011] : · ,:.. The magnetic member 70 is a permanent magnet (10) _, and the magnetic member 7 () is substantially elongated. Of course, the magnetic member 70 may have other shapes such as a U shape. The magnetic member 7 is housed in the cover 52, and its pole corresponds to the through hole 524. [0012] In use, a workpiece (not shown) is placed on the fixing member 34, and the operating member 58 is pulled and the shielding member of the cover 52 is driven by the connecting member π of the operating member 58. The 522 slides so that the shielding portion 541 of the shutter 54 no longer obscures the through hole 524' so that the magnetic lines of the magnetic member 70 can magnetize the fixing member 34 through the through hole 524, thereby adsorbing the workpiece to the magnetic seat 1'. 099118979 Form No. A0101 Page 5 / Society = , d Page 0992033589-0 201143966 [0013] When the magnetic force of the magnetic seat 100 is adjusted, the operating member μ is rotated so that it is no longer fixed to the positioning member 325, and the connection is pulled. The piece 56' drives the cover plate 522 to slide 'the cover 54 to shield the partial through hole 524, so that the magnetic lines of force passing through the shutter 54 form a closed loop in the cover assembly 5, thereby shielding part of the magnetic line to make the magnetic force The magnetic force of the seat is smaller. [0014] When the shutter 54 completely obscures the through hole 524, most of the magnetic lines of force are covered by the mask assembly 50, and the magnetic seat 1 〇〇 shows extremely weak magnetic or does not display magnetic 〇 [0015] by providing a cover The body 52 and the shutter 54 can selectively cover part or even almost all of the magnetic field 'to adjust the magnetic force of the magnetic seat 1Q0, which is convenient to use. [0016] It can be understood that the shutter 54 is not limited to being slidably disposed on the mask plate 522 by using a slide rail. Only the shutter 54 is disposed on the mask panel 522 using a friction component, so that the shutter 54 and the mask panel 522 are disposed. Keep in good contact. [0017] It can be understood that the operating member 58 and the positioning member 325 can also be engaged by means of engagement. That is, the operating member 58 is replaced with a gear, and the positioning member 325 is changed to extend along the extending direction of the guiding hole 323 and mesh with the gear. The rack allows the gear* to move along the rack to move the shutter 54. [0018] It can be understood that the main body 32 of the outer casing 30 can be omitted. In this case, the fixing member 34 is directly fixed to one side of the cover 52, so that the fixing member 34 is opposed to the through hole 524. [0019] In summary, the present invention has indeed met the requirements of the invention patent, and the patent application is filed according to law. However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above-described embodiments, and those skilled in the art will be able to make equivalent modifications or changes to the form of 099118979 in accordance with the spirit of the present invention. No. A0101, page 6 of 13 0992033589-0 201143966 [0020], should be covered by the following patent application. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a magnetic seat according to an embodiment of the present invention. [0021] FIG. 2 is a cross-sectional view taken along line II-II of FIG. 3 is a perspective view of a mask assembly of the magnetic seat shown in FIG. 1. [Description of main component symbols] Magnetic seat: 100 [0024] f) [0025] Housing: 30 Main body: 32. [0026] Side plate: 321 [0027] Guide hole: 323 [0028] Positioning member: 325 [0029] Fixing member: 34 [0030] Mask assembly: 5 0 U [0031] Cover: 52 [0032] Mask: 522 [0033] Through hole: 524 [0034] Shutter: 54 [0035] Shading: 541 [0036] Fixed part: 543 099118979 Form number A0101 Page 7 / Total 13 page 0992033589-0 201143966 [0037] Slide rail: 55 [0038] Connector: 56 [0039] First connection: 562 [0040] Two connection parts: 564 [0041] Third connection part: 566 [0042] Operational parts: 58 [0043] Magnetic parts: 70 099118979 Form number A0101 Page 8 of 13 0992033589-0