200904718 九、發明說明： 【發明所屬之技術領域】 本發明是有關於一種防爆開關箱，且特別是有關於一 種開關箱體上具有樑柱結構，以強化箱體之防爆能力的防 爆開關箱。 【先前技術】 一般而言，為確保例如是化學工廠、煉油薇等易燃、 易爆場所的工作安全，均必須在這些場所使用具有防爆能 力之控制盤，以符工廠設置之防爆安全規範，避免事故擴 大所造成之災害損失。其中，控制盤除了必須使用防爆型 盤面元件外，用以裝置防爆型盤面元件之防爆開關箱的防 爆能力，更是確保工作安全的靈魂所在。 由於習知之防爆開關箱，係由金屬板材製作而成，且 為能確實符合防爆安全規範，通常是以大幅增加板材之厚 度，或在板材上設置輔助肋之方式，來增強防爆開關箱之 防爆能力。惟此種作法，除了會增加防爆開關箱之製造成 本外，其防爆強度亦不能盡如人意。 【發明内容】 有鑑於此，本發明之目的是提供一種防爆開關箱，其 係在防爆開關箱體上設置有樑柱結構，來強化防爆開關箱 箱體之防爆能力，以在有效控制成本之情形下，達成最大 之防爆功效。 5 200904718 為達上述及其他目的，本發明提供一種防爆開關箱， 包括底座及箱蓋。其中，底座具有底板與直立環繞於底板 上之側牆，侧牆上並具有多數支支撐柱。箱蓋用以蓋合底 座，以在箱蓋與底座間形成箱體之容置空間，箱蓋上並具 有u形樑。支撐柱與u形樑係類似於建築主體之樑柱結構， 以在不過度增加板材厚度之情況下，可以有效強化防爆開 關箱箱體之防爆能力。 在一實施例中，此防爆開關箱之底座係為矩形，而支 撐柱則為分別位於底座四個角落之侧牆内凹為弧形所形 成。 在一實施例中，此防爆開關箱之箱蓋内側面共具有三 條U形樑，這些U形樑係相互交叉而在箱蓋上形成雙十字 形。 在一實施例中，此防爆開關箱之底板的内側面也具有 成十字交叉之兩U形樑以及多數條相互交叉之肋，用以強 化底板之強度。 在一實施例中，此防爆開關箱之側牆内側亦具有多數 條相互平行之肋，用以強化侧牆之強度。 由於本發明所提供之防爆開關箱，係分別在底座或箱 蓋上，設置有類似於建築主體之樑柱結構的支撐柱與U形 樑，因此，可在不過度增加板材厚度之情況下，有效強化 防爆開關箱箱體之防爆能力。 為讓本發明之上述和其他目的、特徵、和優點能更明 顯易懂，下文特以較佳實施例，並配合所附圖式，作詳細 200904718 說明如下： 【實施方式] 請參看圖丨八至丨!！所示，此防 底板11與直立環繞於底板u = 關相之底座10係由 底板11係製作成矩形，而側牆^ ^ 12所組成。圖中， 之直立牆面，以在底板n之中^J為環繞於底板11周緣 之容置空間，用來容納例如是:爆了：成防爆開關箱箱體 等之防爆型盤面it件。 t開關、防爆指示燈 面且::二”财顯不’防爆開關箱之底板11的内側 ===?iu與ιΐ2,以及多數條相互 乂乂之肋113，u形樑111、112盘 11之強度，以避免過度增力咳板u板：概 圖1G中顯示，防爆開_之側牆12 柱121，此處之支撐柱121係分別由位於底座Π)四ίΐί 之侧牆12内凹為弧形所形成，以強化侧牆12之強度，避 免需過度增加織所❹板材之厚度。此外，由圖ΐβ、 ID與1G中亦顯示，防爆開關箱之側牆12内侧並具有多數 條相互平行之助122，用以進—步強化側牆之強度。 請參看® 2A至2D所示，此防爆開關箱之箱蓋2〇的強 度，係使用設置於箱蓋20内側面，並相互交叉為雙十字形 之ϋ形樑21、22與23來強化，以搭配設置於底座1〇上之 支撐柱121與υ形襟⑴、112，形成類似於建築主體之樑 柱結構，來達成於不過度增加板材厚度之情況下，有效強 200904718 化防爆開關箱箱體之防爆能力的目的。 其中，為了可以將箱蓋20固定蓋合於底座10上，箱 蓋20的周緣以及底座10的側牆12上，並如圖所示地分別 設置有多數個螺絲孔25與15，以便可以使用螺絲來將箱 蓋20螺合而固定於底座10上，進而將固定於箱蓋20上之 例如是防爆按鈕開關、防爆指示燈等之防爆型盤面元件予 以隔離於防爆開關箱内，達成具有防爆功能之控制操作的 目的。 前述實施例中之防爆開關箱，雖然是在箱蓋20的内侧 面，設置有相互交叉為雙十字形之U形樑21、22與23， 並於底座10之底板11的内側面，設置有成十字交叉之U 形樑111與112，以及多數條相互交叉之肋113，於底座 10之側牆12上，設置有分別位於底座10四個角落之内凹 為弧形的側牆12所形成之支撐柱121，以及設置於側牆12 内侧的多數條相互平行之肋122,以便強化防爆開關箱之 強度，避免過度增加防爆開關箱所使用板材之厚度。然熟 習此藝者應知，U形樑21、22、23、111、112、支撐柱121 及助113、122之設置位置、型式與數量，係可以因應防爆 開關箱之大小與形狀來變化。例如，當防爆開關箱的體積 縮小時，U形樑21、22、23、111、112的設置數量即可大 幅減少，並可省略設置於底板11與側牆12上之肋113、 122。而當防爆開關箱之形狀非為矩形時，亦可變更支撐柱 121之設置位置與型式，以達成強化防爆開關箱之強度的 200904718 雖然本發明已以較佳實施例揭露如上，然其並非用以 限定本發明，任何熟習此技藝者，在不脫離本發明之精神 和範圍内所作之各種更動與潤飾，亦屬本發明之範圍。因 此，本發明之保護範圍當視後附之申請專利範圍所界定者 為準。 200904718 【圖式簡單說明】 圖1A係顯示根據本發明鲂 箱的底座俯視圖。纟队佳實施例之-種防爆« 圖1B係顯示根據本發明較佳實施例之 箱的底座前視圖。 裡防/ 恭開關 圖ic係顯示根據本發明較 箱的底座右職®。 圖ID係顯示沿圖1At A—A剖面線之剖視示意圖。 圖1Ε係顯示沿㈣面線之剖視示意圖。 圖1F係顯示沿圖1Dfc〜c剖面線之剖面示意圖。 圖1G係顯示沿圖1β巾D_D剖面線之剖面示音圖。 箱的示根據本發明較佳實施例之-崎開 箱的根據本發明較佳實施例之-種防爆開 圖2B係顯示沿圖2A巾E-E剖面線之剖視示音 沿圖2A"_F剖面線之剖視：： 箱的示根據本發明較佳實施例之1防爆開 【主要元件符號說明】 10底座 11底板BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an explosion-proof switch box, and more particularly to an anti-explosion switch box having a beam-column structure on a switch box to enhance the explosion-proof capability of the box. [Prior Art] In general, in order to ensure the safety of flammable and explosive places such as chemical factories and refinery, it is necessary to use explosion-proof control panels in these places to meet the explosion-proof safety regulations set by the factory. Avoid disaster losses caused by the expansion of accidents. Among them, in addition to the use of explosion-proof disk components, the control panel is used to protect the explosion-proof switch box of the explosion-proof panel components, which is the soul of ensuring work safety. Because the conventional explosion-proof switch box is made of sheet metal, and it can meet the explosion-proof safety regulations, it is usually to increase the thickness of the board or install auxiliary ribs on the board to enhance the explosion-proof switch box. ability. However, in addition to increasing the manufacturing cost of the explosion-proof switch box, the explosion-proof strength cannot be satisfactory. SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to provide an explosion-proof switch box, which is provided with a beam-column structure on an explosion-proof switch box body, to strengthen the explosion-proof capability of the explosion-proof switch box box, so as to effectively control the cost. In the case, the maximum explosion-proof effect is achieved. 5 200904718 To achieve the above and other objects, the present invention provides an explosion-proof switch box including a base and a cover. Wherein, the base has a bottom plate and a side wall which is erected on the bottom plate, and has a plurality of support columns on the side wall. The cover is used to cover the bottom seat to form a housing space between the cover and the base, and the cover has a u-shaped beam. The support column and the u-beam are similar to the beam-column structure of the main body of the building, so as to effectively strengthen the explosion-proof capability of the explosion-proof switch box without excessively increasing the thickness of the plate. In one embodiment, the base of the explosion-proof switch box is rectangular, and the support columns are formed by concave arcs in the side walls respectively located at the four corners of the base. In one embodiment, the inner side of the cover of the explosion-proof switch box has a total of three U-shaped beams which intersect each other to form a double cross on the cover. In one embodiment, the inner side of the bottom plate of the explosion-proof switch box also has two U-shaped beams that are crossed and a plurality of ribs that intersect each other to enhance the strength of the bottom plate. In one embodiment, the inside of the side wall of the explosion-proof switch box also has a plurality of mutually parallel ribs for reinforcing the strength of the side wall. Since the explosion-proof switch box provided by the present invention is provided on the base or the cover respectively, a support column and a U-shaped beam similar to the beam-column structure of the main body of the building are provided, so that the thickness of the plate can be increased without excessively increasing the thickness of the plate. Effectively strengthen the explosion-proof capability of the explosion-proof switch box box. The above and other objects, features, and advantages of the present invention will become more apparent and understood. Too!! As shown, the base plate 11 and the base 10 which are vertically adjacent to the bottom plate u = are formed in a rectangular shape by the bottom plate 11 and the side walls ^ ^ 12 are formed. In the figure, the upright wall surface is a accommodating space surrounding the periphery of the bottom plate 11 in the bottom plate n for accommodating an explosion-proof type disk surface member such as an explosion-proof switch box case. t switch, explosion-proof indicator surface and:: 2" financial display is not 'the inside of the bottom plate 11 of the explosion-proof switch box ===?iu and ιΐ2, and a plurality of ribs 113, u-shaped beams 111, 112 disk 11 The strength to avoid excessive force on the cough board u: as shown in Figure 1G, the explosion-proof opening _ the side wall 12 column 121, where the support column 121 is respectively recessed by the side wall 12 of the base Π) It is formed by an arc to strengthen the strength of the side wall 12, and avoids excessively increasing the thickness of the woven sheet. Further, as shown in the figures ΐβ, ID and 1G, the side wall 12 of the explosion-proof switch box has a plurality of strips. Parallel help 122 for further strengthening the strength of the side wall. Please refer to ® 2A to 2D, the strength of the cover 2 of the explosion-proof switch box is set on the inner side of the cover 20 and mutual The cross-shaped cross-shaped beams 21, 22 and 23 are reinforced to match the support columns 121 and the υ-shaped rafts (1) and 112 provided on the base 1 to form a beam-column structure similar to the main body of the building. However, under the condition of increasing the thickness of the sheet, the explosion-proof energy of the effective 200904718 explosion-proof switch box box In order to cover the cover 20 to the base 10, the periphery of the cover 20 and the side wall 12 of the base 10, and a plurality of screw holes 25 and 15 are respectively provided as shown. Therefore, the screw cover can be used to screw the cover 20 to the base 10, and the explosion-proof panel components such as the explosion-proof button switch and the explosion-proof indicator light fixed to the cover 20 are separated into the explosion-proof switch box. The purpose of the control operation with the explosion-proof function is achieved. The explosion-proof switch box in the foregoing embodiment, although on the inner side of the cover 20, is provided with U-shaped beams 21, 22 and 23 which cross each other in a double cross shape, and are mounted on the base The inner side surface of the bottom plate 11 is provided with U-shaped beams 111 and 112 which are crisscrossed, and a plurality of ribs 113 which intersect each other. On the side wall 12 of the base 10, they are respectively disposed in four corners of the base 10. a supporting column 121 formed by the concave side wall 12 and a plurality of parallel ribs 122 disposed on the inner side of the side wall 12, so as to strengthen the strength of the explosion-proof switch box, and avoid excessively increasing the plate used in the explosion-proof switch box However, those skilled in the art should know that the position, type and quantity of U-beams 21, 22, 23, 111, 112, support column 121 and assist 113, 122 can be adapted to the size and shape of the explosion-proof switch box. For example, when the volume of the explosion-proof switch box is reduced, the number of U-shaped beams 21, 22, 23, 111, 112 can be greatly reduced, and the ribs 113, 122 provided on the bottom plate 11 and the side wall 12 can be omitted. When the shape of the explosion-proof switch box is not rectangular, the position and type of the support column 121 may be changed to achieve the strength of the explosion-proof switch box. Although the present invention has been disclosed in the preferred embodiment, it is not It is also within the scope of the invention to make various modifications and refinements made by those skilled in the art without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims. 200904718 BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1A is a plan view showing the base of a box according to the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Figure 1B shows a front view of a base of a box in accordance with a preferred embodiment of the present invention. Guard / Guard Switch Figure ic shows the base of the right position of the box according to the present invention. Figure ID is a schematic cross-sectional view taken along line A-A of Figure 1 . Figure 1 shows a schematic cross-sectional view along the (four) upper line. Figure 1F is a schematic cross-sectional view taken along the line of Figure 1Dfc-c. Figure 1G is a cross-sectional view showing a section along the line D_D of Figure 1. Illustrated in accordance with a preferred embodiment of the present invention - an exploded view of the preferred embodiment of the present invention is shown in section 2A along with a section along the line EE of Figure 2A. Cross-sectional view of the line: The display of the box according to the preferred embodiment of the present invention is explosion-proof. [Main component symbol description] 10 base 11 bottom plate
Ul、112 ' 21、22、23 U 形樑 10 200904718 113 、 122 肋 12侧牆 121支撐柱 15、25螺絲孔 20箱蓋 11Ul, 112 ' 21, 22, 23 U-beam 10 200904718 113 , 122 Rib 12 side wall 121 support column 15 , 25 screw hole 20 box cover 11