201110918 六、發明說明： 【發明所屬之技術領域】 特別是指一種安全组合床。 本發明是有關於一種床 【先前技術】 習知-般兒童用的組合式睡床（例如美國專利公告 6345400 Β2幻由二側桿、二端桿、四連接件與一床触201110918 VI. Description of the invention: [Technical field to which the invention pertains] In particular, it refers to a safe combination bed. The present invention relates to a bed [Prior Art] A conventional combination bed for children (for example, U.S. Patent Publication No. 6345400 Β2 illusion by two side bars, two end bars, four connectors and one bed touch
合而成；然而，此種睡床的床網四角落與該等連接件之間 都間隔出—很寬的間隙’易造成兒童意外踩空跌倒的危險 ，而且’其連接件須面上均開設有_供兩個睡床上、下堆 疊用的疊組孔，易造成兒童的腳掌意外陷人的危險。 如圖卜2所示，習知另一種兒童睡床改良結構（台灣 專利公告第Μ264954號），包含一床網i '四支桿2，及四 腳座3，該床網i具有一網體1〇1，及一設置於該網體ι〇ι 四角落的掛鉤102，該等腳座3分別具有一内環緣3〇1、一 形成於該内環緣301的穿槽孔302，及一由該穿槽孔3〇2 一 側的壁面朝下延伸形成的定位凸片3〇3，此種睡床在組裝時 疋將該網體1 〇 1四角落分別拉入該等腳座3 .的穿槽孔3〇2， 並使該等掛鉤102分別嵌卡於該等腳座3的定位凸片3〇3， 藉以避免該網體101四角落與該等腳座3之間形成間隙。 然而，此種睡床的腳座3頂面上也設開有一供堆疊用 的疊組孔304，仍然容易造成兒童的腳掌-意外陷入的危.險. 而且兒童的腳趾也可能不小心卡入該等腳座3的穿槽孔3〇2 ;此外’該網體1〇1四角落與該等腳座3之間仍具有可被 擇開的縱向間隙305，可能導致兒童踩踏的潛在危險。 201110918 【發明内容】 因此’本發明之目的，即在提供-種可防止兒童發生 踩踏危險的安全組合床。 於是，本發明安全組合床，包含一支撐層、至少三支 樓桿’及至少三連接單元。該支撐層具有一中央部、至少 三圍繞該中央部設置的穿套部，及至少三分別延伸於相鄰 的穿套部之間的轉角連接部。該等支撐桿分別可拆卸地穿 置於該等穿套部。該等連接單元分別具有—底座、一可拆 卸地設置於該底座的頂蓋，及—内側φ，每—連接單元的 底座與頂i之間界定出二夾一角度設置的插設孔，每一連 接單元的内側面界定於該等插設孔之間，每一連接單元在 該内側面形成-由_外延伸並分別與該等插設孔連通的」 收納空間，每一連接單元的插設孔分別供其中二支撐桿可 拆卸地插置’其中，當該等支樓桿分別穿套於該支撐層的 穿套部，且該等支撐桿與該等連接單元組合成一框架時， 該^穿套部的兩端緣分別位於該等連接單元的插設孔内， 該等轉角連接部分別位於該等連接單元的收納空間内。 【實施方式】 有關本發明之前述及其他技術内容、特點與功效，在 以下配D參考圖式之一較佳實施例的詳細說明中，將可清 楚的明白。 多閱圖3、4，為本發明安全組备床的較佳實施例，該 安全組合床包含：一支撐層10、四支撐桿20，及四連接單 元3 0 〇 201110918 如圖3、4所示’該支撐層ι〇具有一中央 繞該中央部11設置的穿套邻 、 、四圍 12，及四分別延伸於相鄰的空 套部12之間的轉角連接部 郇的穿 史按冲13。在本實施例中 1〇是一種床網。 茨文撐層 如圖3、4所示’.料支撐桿Μ分別 該等穿套部12 ,該等支撐裎v I也穿置於 才干20为別具有二相反的 ，及二分別貫穿該等端部21的穿孔22。 如圖3、4、6所示，該等 L 寺連接.早70 30分別具有一底座 4〇、一可拆卸地設置於該底座 - _咕 υ的頂盍5〇、一内側面60 、一第一螺栓70，及—第二螺拴71。 ^連接單元30的底座4〇與頂蓋5〇之間界定出二爽 I角度Θ設置的插設孔8〇,每-連接單元30的插設孔8〇 刀別供其中二支撐桿2〇可 地 ^為9G度。 卩㈣置在本貫施例中該角 每一連接單元30的内侧面6〇界定於該等插設孔 ::母―連接單元3〇在該内側面6〇形成一由内朝外延伸 別與該等插設孔80連通的收納空間90 (見圖7)。 :圖4、5、7所示，每-底座4〇具有一第一頂壁41、 一 側土 42、一夾該角度Θ (見圖3 )設置並貫穿該第 了:： 41的第—開孔43、一從該第一頂壁μ朝下延伸出 ，—圍繞壁44、一形成於該第一圍繞壁料底緣的 —貝穿該底壁45的第二開孔46。該第一圍繞壁44 界定出-貫穿該第一㈣41的定位槽47，該第一頂壁Μ ”該第側壁42配合界定出一疊組空間48。 201110918 一該第—頂壁4丨具有一夾擎頂面411、一疊組底面412、 二介，每—連接單元30的插設孔80之間的内周緣413、一 "於母-連接單^ 3G的插設孔8G之間的外周緣、數間 隔地設置於該夾#頂面411並介於每—連接單元％的插設 孔80之間的夾掣凸齒415。 該第一側壁42從該第一頂壁41的外周緣414朝下延 伸出’並具有一第一内周面421、一第一外周面422、一頂 内縮段423、一底外擴段424，及-形成於該頂内縮段423 與该底外擴段424之間的肩部425。 該等第-開孔43(見圖8)分別與每—連接單元％的 插設孔80連通。 如圖4、6、7所示，每一頂蓋5〇具有—對應於該第一 頂壁41的第二頂壁51、一對應於該第一側壁μ的第二側 凸緣壁53、二分別從該第二頂壁51朝下延伸出並對 應於該等第—開孔43的第—螺柱.54 (見圖8)、二分別形 成於該等第—螺柱54内的第—螺孔55 (見圖8)、 第二頂壁51朝下延伸出並可拆卸地插人財位槽Ο較 位柱56,及一形成於該定位柱％内的第二螺孔π。 該第二頂壁51具有-對應於該爽掣頂面4ιι的炎擎底 ，川、—呈連續表面狀的疊組頂面512、—介於每一連接 =30的插設孔80之間的内周緣513，及—介於每一連接 單疋30的插設孔8〇之間的外周緣$ 14。 該第二側壁52從該第二頂壁51的外周緣514朝下延 伸出’並可拆卸地套置於該第—側壁42的頂内縮段⑵。 201110918 該第 側壁52具有—第 522 内周面521，及一第二外周面 出 該凸緣壁53從該第二頂壁51的内周、缘513朝下延伸 支乂圖。3:Γ當使用者將該等支撐桿分別穿套於該 單^ &且欲將該等切桿2G與該等連接 組口成—框架100時’其組裝方式為： ―、如圖4所示，將每_頂蓋5〇倒置於—平面上。 上，:、如圖4所示’將該等支撐桿Μ擺置於每-頂蓋50 穿過ΪΓΓ所示，使每—頂蓋5G的第—螺柱54分別 穿、中一支撐桿20的穿孔22。 目所不冑每—底座40擺置於每—頂蓋5〇 一=而如圖7所示，使每-頂蓋5〇的定位柱56插入每 一底座40的定位槽47。 四如圖7、8所不，將每一連接單元3 =別穿過每一底座40的第一開孔43,並分別與每二 的第-螺孔55可拆卸地螺接’並將每一連接單元3〇 的第二螺拴71穿過每一底座4〇的第二開孔牝，並鱼每一 :蓋？0的第二螺孔57可拆卸地螺接。如此，在本實施例 每連接單兀30的插設孔80界定於該第―、二頂壁 41 ' 51的夾擎頂、底面411、川之間，每一連接單元川 的收納空間90界定於該夹攀頂、底面41Ι、5ιι與該凸緣壁 53之間’該第-頂壁41的夾掣凸齒415位於每—連接單元 3〇的收納空間90内，每一連接單元3〇的凸緣壁53與夹擎 201110918 凸齒化呈内、外互相間隔’而夾掣該支撐層ι〇 接部13 » 藉此’如圖6、7、8所示，#該等支樓桿2()與該等連 接單元30組合成該框架1〇〇肖，每一連接單元％的插設 孔80分別供其中二支推桿2〇的端部21插置，該等穿套部 12的兩端緣分別位於該等連接單元3〇的插設孔8〇内該 等轉角連接部U分別位於該等連接單元3〇的收納空間卯 内，使該支樓層1〇四角落與該等連接單元3〇之間不會產 生任何間隙。 a 如圖9、10所示，當兩安裝組合床的框架ι〇〇上、下 .堆疊時，下側連接單A 30容置於上側連接單元3q的疊組 空間48 ’下側連接單元3〇的底座4〇的第一外周面似及 頂座50的第二外周面522與上側連接單元％的底座4〇的 第-内周面421抵接’下側連接單元3〇的頂蓋％的疊组 頂面犯與上側連接單元30的底座4〇的疊組底面412互 相鄰近。 經由以上的說明，可再將本發明的優點歸納如下. 一、本發明支#層1G㈣落與料連接單元％之間 不存在任何間隙，因此，相較於習知技術，本發明可完全 解決習知技術易造成兒童意外踩空跌倒的問題。 二、本發明連接單元30的頂t 5〇的第二頂壁Η的疊 組頂面512是為連續表面，並沒有形成習知技術的疊組孔 、’因此’相較於習知技術，本發明可完全解決習知技術易 造成兒童的腳掌意外陷入疊組孔的問題。 201110918 二本:明連接單元3。的底座4。形成有朝内且朝下 汗 且組二間48，因此，本發明在收納時，仍可上、下 堆疊存放，有效減少所t的存放空間。 “值得一提的是，本發明之安全組合床不限於四邊形， 將-亥支撐層10的穿套部12、該等支樓桿及該等連接單 元30的數量同時減為三或增為五、六或更多，可以組成其 他夕邊形之形狀，又，該支標層1〇可以具備彈性而成為一 安全跳床；以及，本發明之安全組合床，除了供兒童躺睡 使用外，亦可作為寵物用、成人坐置用，甚或_衣置物用 不上所述，本發明之安全組合床，不僅可完全避免兒 里發生意外踩入間隙與陷入疊組孔的危險，且在收納時仍 可上、下堆疊存放，故確實能達成本發明之目的。 准以上所述者，僅為本發明之較佳實施例而已’當不 能以此限定本發明實施之範圍’即大凡依本發明申請專利 範圍及發明說明内容所作之簡單的等效變化與修飾，皆仍 屬本發明專利涵蓋之範圍内。 201110918 【圖式簡單說明】 圖1是習知一種兒童睡床改良結構的立體組合示意圖 圖2是該兒童睡床改良結構的局部組合剖視示意圖； 圖3是本發明的安全組合床一較佳實施例的組合俯視 示意圖； . 圖4是該較佳實施例的一支撐層、二支撐桿與一連接 單元的倒置分解立體示意圖； 圖5是該連接單元的一底座的倒置立體示意圖； 圖6疋δ亥較佳貫施例的局部組合立體示音圖；. 圖7是圖3中VE -W割面線的剖視示意圖； 圖8是圖3中Μ -II割面線的剖視示意圖； 圖9是該較佳實施例的組合侧視示意圖，說明兩安全 組合床上、下堆疊；及 圖10是一類似圖7的視圖，說明兩個連接單元上、下 堆疊。 10 201110918However, the four corners of the bed net of such a bed are separated from the connecting members - a wide gap is likely to cause the child to accidentally step on the air, and the contact surface of the connector must be There are stack holes for two beds and stacking, which may cause the child's foot to accidentally get trapped. As shown in Fig. 2, another modified bed structure for children (Taiwan Patent Publication No. 264954) includes a bed net i 'four poles 2 and four feet 3, and the bed net i has a net body 1〇1, and a hook 102 disposed at a corner of the mesh body ι〇ι, the footrests 3 respectively having an inner ring edge 3〇1, a slotted hole 302 formed in the inner ring edge 301, and a positioning tab 3〇3 formed by the wall surface of the slotted hole 3〇2 extending downward, and the bed is pulled into the four seats of the net body 1〇1 during assembly. The slots 3 〇 2 are inserted into the positioning tabs 3 〇 3 of the sockets 3 to avoid gaps between the four corners of the net body 101 and the legs 3 . . However, the top surface of the footrest 3 of such a bed is also provided with a stacking hole 304 for stacking, which is still liable to cause a child's foot-accidental danger. Moreover, the child's toes may also accidentally get stuck. The through holes 3 〇 2 of the legs 3; in addition, there are still longitudinal gaps 305 that can be selected between the four corners of the mesh body 1 and the feet 3, which may cause a potential danger of children stepping on. 201110918 SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a safe combination bed that prevents a child from being stepped on. Thus, the safety combination bed of the present invention comprises a support layer, at least three towers' and at least three connection units. The support layer has a central portion, at least three sleeve portions disposed around the central portion, and at least three corner joint portions extending between adjacent sleeve portions. The support rods are detachably worn on the wear sleeves, respectively. The connecting units respectively have a base, a top cover detachably disposed on the base, and an inner side φ, and each of the connecting unit bases and the top i defines a two-clamp angle installation hole, each An inner side surface of a connecting unit is defined between the insertion holes, and each connecting unit forms a storage space on the inner side surface which is extended from the outer side and communicates with the insertion holes respectively, and the insertion space of each connecting unit The holes are respectively detachably inserted into the two support rods, wherein when the support rods are respectively sleeved on the sleeve portion of the support layer, and the support rods are combined with the connection units into a frame, The two end edges of the sleeve portion are respectively located in the insertion holes of the connection units, and the corner connection portions are respectively located in the accommodation spaces of the connection units. The above and other technical contents, features and effects of the present invention will become apparent from the following detailed description of the preferred embodiments of the invention. 3 and 4 are a preferred embodiment of the safety group spare bed of the present invention. The safety combination bed comprises: a support layer 10, four support bars 20, and four connection units 3 0 〇 201110918 as shown in FIGS. 3 and 4. The support layer ι has a centrally disposed sleeve around the central portion 11, and a circumference 12, and a corner joint extending between the adjacent sleeve portions 12 respectively. . In the present embodiment, 1〇 is a bed net. As shown in Figures 3 and 4, the support layer is respectively provided with the sleeves 12, and the support members 裎v I are also placed in the abilities 20, and the two are opposite. The perforations 22 of the end portion 21. As shown in Figures 3, 4 and 6, the L-Tems are connected. The early 70 30 has a base 4 〇, a top 盍 5 可 detachably disposed on the base _ 咕υ, an inner side 60, and a The first bolt 70, and the second screw 71. Between the base 4〇 of the connecting unit 30 and the top cover 5〇, the insertion hole 8〇 provided by the two-sinking angle Θ is defined, and the insertion hole 8 of each connecting unit 30 is provided for the two supporting rods 2〇 It can be 9G degrees.四 (4) In the present embodiment, the inner side 6〇 of each connecting unit 30 of the corner is defined by the insertion holes: the mother-connecting unit 3〇 is formed on the inner side 6〇 to extend from the inside to the outside. A storage space 90 (see FIG. 7) that communicates with the insertion holes 80. As shown in Figures 4, 5 and 7, each of the bases 4 has a first top wall 41, a side wall 42, and a set angle Θ (see Fig. 3) which is disposed and penetrates the first:: 41 The opening 43 extends downwardly from the first top wall μ, and surrounds the wall 44, and a second opening 46 formed in the bottom edge of the first surrounding wall. The first surrounding wall 44 defines a positioning groove 47 extending through the first (four) 41. The first top wall ” ” the first side wall 42 cooperates to define a stack of spaces 48. 201110918 one of the first top walls 4 丨 has a The top surface 411 of the clamp, the bottom surface 412 of the stack, the second inner joint 413 between each of the insertion holes 80 of the connecting unit 30, and a " between the insertion holes 8G of the female-connecting single 3G The outer circumference is spaced apart from the top surface 411 and is interposed between the insertion holes 80 of each of the connection units. The first side wall 42 is from the outer circumference of the first top wall 41. The edge 414 extends downwardly and has a first inner circumferential surface 421, a first outer circumferential surface 422, a top inner contraction section 423, a bottom outer expansion section 424, and a top constriction section 423 formed thereon. a shoulder portion 425 between the bottom outer expansion portions 424. The first opening-opening holes 43 (see Fig. 8) are respectively connected to the insertion holes 80 of each of the connection units. As shown in Figures 4, 6, and 7, each The top cover 5 has a second top wall 51 corresponding to the first top wall 41, a second side flange wall 53 corresponding to the first side wall μ, and two extending downward from the second top wall 51, respectively. And corresponding to The first studs 54 of the first opening 43 (see FIG. 8) and the second screw holes 55 (see FIG. 8) formed in the first studs 54 and the second top wall 51 are respectively The second top hole 51 has a second screw hole π formed in the positioning column %. The second top wall 51 has a corresponding top surface of the top surface. The bottom of the Yan, the Sichuan, is a continuous surface of the stack top surface 512, the inner circumference 513 between the insertion holes 80 of each connection = 30, and - between each connection unit 30 The outer peripheral edge $14 between the insertion holes 8〇. The second side wall 52 extends downward from the outer peripheral edge 514 of the second top wall 51 to detachably fit over the top end of the first side wall 42 Section (2) 201110918 The first side wall 52 has a 522th inner circumferential surface 521, and a second outer circumferential surface of the flange wall 53 extends downward from the inner circumference of the second top wall 51 and the edge 513. : When the user wears the support rods to the single rods and respectively, and the rods 2G and the connection group ports are to be framed 100, the assembly manner is as follows: ―, as shown in FIG. 4 Show that each _ top cover 5 is placed upside down - on the plane. Upper,: as shown in Fig. 4, 'the support rods are placed on each of the top cover 50 through the ΪΓΓ, so that the first studs 54 of each of the top covers 5G are respectively worn and A perforation 22 of the support rod 20. Each of the bases 40 is placed on each of the top covers 5 and as shown in Fig. 7, the positioning posts 56 of each of the top covers 5 are inserted into each of the bases 40. The positioning groove 47. As shown in Figs. 7 and 8, each connecting unit 3 = passes through the first opening 43 of each base 40, and is detachably screwed with each of the second screw holes 55. Connect the second screw 71 of each connecting unit 3〇 through the second opening 每一 of each base 4〇, and fish each: cover? The second screw hole 57 of 0 is detachably screwed. Thus, in the embodiment, the insertion hole 80 of each connecting unit 30 is defined between the top of the first and second top walls 41'51, the bottom surface 411, and the river, and the storage space 90 of each connecting unit is defined. The clamping protrusions 415 of the first-top wall 41 between the bottom of the clip, the bottom surface 41Ι, the surface of the bottom surface 41Ι, and the flange wall 53 are located in the receiving space 90 of each of the connecting units 3〇, each connecting unit 3〇 The flange wall 53 and the pinion 201110918 are internally and externally spaced apart from each other and sandwich the support layer ι 部 13 » by this, as shown in Figures 6, 7, 8 2() is combined with the connecting units 30 to form the frame 1 , and the insertion holes 80 of each connecting unit % are respectively inserted into the end portions 21 of the two push rods 2〇, and the wearing portions 12 are respectively inserted. The two end edges are respectively located in the insertion holes 8 of the connecting units 3〇, and the corner connecting portions U are respectively located in the receiving spaces 该 of the connecting units 3〇, so that the branch floor has four corners and the same No gap is created between the connection units 3〇. a As shown in FIGS. 9 and 10, when the frames of the two combined beds are stacked, stacked, and stacked, the lower connecting unit A 30 is accommodated in the stacking space 48' of the upper connecting unit 3q. The first outer peripheral surface of the base 4 of the crucible is similar to the second outer peripheral surface 522 of the top seat 50 and the first inner peripheral surface 421 of the base 4 of the upper connecting unit % abuts the top cover of the lower connecting unit 3 The top surface of the stack is adjacent to the stack bottom surface 412 of the base 4 of the upper connecting unit 30. Through the above description, the advantages of the present invention can be further summarized as follows. 1. The present invention has no gap between the 1G (four) drop and the material connection unit %, and therefore, the present invention can completely solve the problem compared with the prior art. Conventional technology is prone to cause children to accidentally step on the air. 2. The top surface 512 of the second top wall 顶 of the top t 5 连接 of the connecting unit 30 of the present invention is a continuous surface, and does not form a stacked hole of the prior art, so that it is compared with the prior art. The invention can completely solve the problem that the prior art is easy to cause the child's foot to accidentally fall into the stacking hole. 201110918 Two books: Ming connection unit 3. The base 4. The invention is formed with inward and downward sweating and two sets of 48. Therefore, the present invention can be stacked and stored up and down during storage, thereby effectively reducing the storage space of t. It is worth mentioning that the safety combination bed of the present invention is not limited to a quadrangular shape, and the number of the sleeve portions 12 of the support layer 10, the support bars and the number of the connection units 30 are simultaneously reduced to three or five. , six or more, may form other octagonal shapes, and the slab layer 1 〇 may have elasticity to become a safety trampoline; and the safety combination bed of the present invention, in addition to the children lying down, It can also be used as a pet, for adults, or even for clothing. The safety combination bed of the present invention not only completely avoids the risk of accidentally stepping into the gap and getting into the stack hole, but also in the storage. The present invention can be achieved by stacking and storing the upper and lower layers. It is to be understood that the above description is merely a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. The simple equivalent changes and modifications made by the scope of the invention and the description of the invention are still within the scope of the invention. 201110918 [Simplified description of the drawings] FIG. 1 is a modified structure of a child's bed. FIG. 2 is a schematic partial cross-sectional view showing a modified structure of the child's bed; FIG. 3 is a schematic top plan view of a preferred embodiment of the safety combination bed of the present invention; FIG. 4 is a support of the preferred embodiment. Fig. 5 is an inverted perspective view of a base of the connecting unit; Fig. 5 is an inverted perspective view of a base of the connecting unit; Fig. 6 is a partial combined stereo view of the preferred embodiment of Fig. 6; Fig. 7 Figure 3 is a cross-sectional view of the VE-W cut line in Figure 3; Figure 8 is a cross-sectional view of the Μ-II cut line in Figure 3; Figure 9 is a side view of the combination of the preferred embodiment, illustrating two security combinations Bed and bottom stacking; and Figure 10 is a view similar to Figure 7, illustrating the two connection units stacked up and down. 10 201110918
【主要元件符號說明】 10··..· …·支撐層 45…… •…底壁 11 … •…中央部 46…… •…第二開孔 12 •…穿套部 47…… •…定位槽 13·.··· …·轉角連接部 48…… •…疊組空間 20•.… …·支撐桿 50…… •…頂蓋 21·.... •…端部 51…… •…第二頂壁 22…… •…穿孔 511 ··· •…夾掣底面 30••… •…連接單元 512… •…疊組頂面 40 •…底座 513… •…内周緣 41…… •…第一頂壁 514… •…外周緣 411… —夾掣頂面 52…… •…第二側壁 412… •…豐組底面 521 ··· •…第二内周面 413… •…内周緣 522… •…第二外周面 414… •…外周緣 53·.··· •…凸緣壁 415 ... •…夾掣凸齒 54··..· •…第一螺柱 42…… •…第一側壁 5 5····· •…第一螺孔 421… …·第一内周面 56····. •…定位柱 422 ·*· •…第一外周面 57··... •…第二螺孔 423 ·… …·頂内縮段 60•…· —内側面 424 ···· …·底外擴段 70·.... •…第一螺栓 425 ··· 肩口P 71…… •…第二螺栓 43…… •…第一開孔 80…… •…插設孔 44…… …·第一圍繞壁 90…… •…收納空間 11 201110918 100.......框架 θ.........角度 12[Description of main component symbols] 10·······Support layer 45... •...Bottom wall 11 ... •...Center part 46... •...Second opening 12 •...Wearing part 47... Slot 13······· corner joint 48... •...stack space 20•....·support rod 50... •... top cover 21·.... •...end 51... •... Second top wall 22... •...Perforation 511 ··· •...Clip bottom surface 30••... •...Connection unit 512... •...Stack top surface 40 •...Base 513... •... Inner circumference 41... •... First top wall 514... • outer periphery 411... - top surface 52... • second side wall 412... • ... rich group bottom surface 521 ····... second inner peripheral surface 413... • inner circumference 522 ... •...Second outer peripheral surface 414... •... outer peripheral edge 53·····•...flange wall 415 ... •... pinch convex tooth 54··..·......first stud 42... ...the first side wall 5 5······...the first screw hole 421...the first inner peripheral surface 56····....the positioning post 422 ·*· •...the first outer peripheral surface 57··. .. •...second screw hole 4 23 ·... The top indent section 60•...· — the inner side 424 ······ the bottom extension section 70·.... •...the first bolt 425 ··· Shoulder P 71...... •... Two bolts 43... •...first opening 80... •... insertion hole 44......first surrounding wall 90... •...storing space 11 201110918 100.......frame θ... ... angle 12