TWI325753B

TWI325753B - Impeller structure

Info

Publication number: TWI325753B
Application number: TW096126907A
Authority: TW
Inventors: Alex Horng
Original assignee: Sunonwealth Electr Mach Ind Co
Priority date: 2007-07-24
Filing date: 2007-07-24
Publication date: 2010-06-01
Also published as: US20090028716A1; TW200906282A

Description

1325753 « 九、發明說明：【發明所屬之技術領域】本發明係關於一種扇輪構造(二），特別是關於藉由射出成形方式製作一扇輪之數個部位，且縮減該扇輪越遠離其軸心位置之該部位的實質厚度’以提昇平衡精確度之扇輪構造。【先前技術】1325753 « IX. Description of the invention: [Technical field of the invention] The present invention relates to a fan wheel structure (2), in particular to a plurality of parts of a fan wheel formed by injection molding, and reducing the distance of the fan wheel The substantial thickness of the portion of the axial position is used to improve the balance of the precision of the fan wheel configuration. [Prior Art]

隨著電子裝置效能不斷提昇，其運作時所產生的溫度亦越來越高，過高的環境溫度容易影響電子農置效能及穩定性，因此散熱單元已成為現行電子裝置中不可或缺的必要配備之一。一般而言，該散熱單元大部分係對應該電子裝置t之電子元件的體積翻適當尺寸之散熱風扇二為了降低該散熱風扇之整體重量，該散熱風扇之扇輪大夕藉由塑性材料利用射出成形方式製成。夕現今利用射出成形方式製成之扇輪，其各部位構例如·輪权、％板或扇葉等〕大部分均設計成具有相實質厚度’轉持該扇輪之平衡精確性及 ^ .點’例如:在射出成形之過程中係利用: 之_ 料二二= 言越二 L认之_崎料的體積越多該反向斤六亦越大，以及該注料口對應之反向堡力〇.3mm，導致哕熔3ψ>湖# 乂工3 5軸向厚度不小於之塑性材料實質上難以均勻的埴入^ ΡΚ10393 07/07/24 ν、、吞茨成形空間遠離該注料口少办d 遠離軸心位置〔c如此-來，造成該扇輪如：環板或扇葉^ 料口之位置〕之部分構件〔例尤其是該熔融之塑性材料在流經該後容易產生質量分布不均句之現象，而 ::=。之各部位實質上报難具有均句之質量分布，有確實有必㈣捕確度。基於上述原因 ._ 進V改良上述習用扇輪構造。忐古私Γ於此’本發明改良上述之缺點，其中一扇輪形及數個彎折部If 牆部及環板部等部位〕飞弓折。卩设置於各該部位間之交界處，其之者ϋ羽輪轴心之該部位的實質厚度大於該其他部位 ‘貝遠離該扇輪軸心之該部位的實質厚度二?該扇輪之整體重量，且同時提昇該扇輪成 =貝1分布之均，以增加平衡【發明内容】本發月之主要目的係提供一種扇輪構造㈡，其中一，形成，個部位及數個彎折部’該彎折部設置於各該曰]父Ν處，其中最接近該扇輪軸心之該部位的實質 =大於該其他部位之實質厚度，使越遠離該扇輪軸心之 =餘部，實質厚度越小，藉此本發明具有提升減輕扇輪正體重置及提昇平衡精密度之功效。根據本發明之扇輪構造㈡，其藉由射出成形方式形成數個部位、數個彎折部及數個扇葉，其中最接近該扇輪轴心之該部位的實質厚度大於該其他部位之實質厚度，且 ΡΚ10393 07/07/24 1325753 越遠離該扇輪軸心之該其餘部位的實質厚度越小；= 彎折部分卿成於各辩目鄰二部位之H數=數低於最遠離該扇輪軸心之該部位的外周緣。藉此，^鉬形成輪之整體重量，闕時提昇該扇輪質量分布/ = 增加平衡精密度。 _句性，【實施方式】為讓本發明之上述及其他目的、特徵及優顯易懂，下文群本發日狀擁實關，並配合所，作詳細說明如下： #圖式 -般而言，由於利用射出成形方式製作—散之一扇輪’故該扇輪之材質較佳係選用一塑性村料…〔、羽 :聚苯硫醚、聚丙烯、樹脂及聚魏酮等〕， ’如，融狀態下具有較佳之流動性。該溶融之紐材= 一，嘴對應-扇輪模具之-注料口注入該扇輪模間内’以成形該扇輪之輪轂、環板構中該注料口之位置通常對應位於該扇= =置，以便位於該扇輪模具之塑性㈣可均該成开> 空間内之各間隙。 -、於構造個\及2圖所示，本發明第—實施例之扇輪其相對;該扇：了 Π:Γ部，其中該數個部位依照 -輪轴心座10距離的遠近依序分別為輪章又之一頂息部U〔即該扇輪】之一第輪數之—環牆部U〔即該扇輪1之一第二部位〕及一二板部13〔即該屬輪丨之— 一衣弟一邛位〕，該軸心座1〇設置 ΡΚ10393 07/07/24 1325753 於該扇輪1之軸心位置，該頂蓋部u係由轴心座1〇之外周緣直翻外徑向延_成；該猶部12勤該項蓋部 11之外周緣轴向朝下t折形成，該頂蓋部u及環踏部12 共同圍繞形成-内部空間a;該環板部13係由該環牆部η 之-端徑向朝外弯折形成。該扇輪i另具有數個扇葉μ ’其係由該環板部13之外周緣徑向朝外延伸而成，且各該扇葉14之間形成等間距排列。As the performance of electronic devices continues to increase, the temperature generated during operation is also higher and higher. Excessive ambient temperature is likely to affect the efficiency and stability of electronic farming. Therefore, the heat dissipation unit has become an indispensable necessity in current electronic devices. One of the equipment. In general, the heat dissipating unit is mostly a heat dissipating fan corresponding to the size of the electronic component of the electronic device t. In order to reduce the overall weight of the heat dissipating fan, the fan of the cooling fan is ejected by plastic material. Made by forming. Nowadays, the fan wheel made by the injection molding method, and its parts such as the wheel right, the % plate or the fan blade, etc., are mostly designed to have a substantial thickness of 'the balance precision of the wheel wheel. Point 'for example: in the process of injection molding, the use of: _ material two two = 言越二L recognition _ the more the volume of the raw material, the larger the reverse jin 6, and the corresponding reverse of the injection port堡力〇.3mm, resulting in 哕 ψ 3ψ>湖# 3工3 5 The axial thickness is not less than the plastic material is substantially difficult to evenly penetrate ^ ΡΚ10393 07/07/24 ν,, the swallow forming space away from the shot The part of the member that is far from the axis position [c such a position, such as: the position of the ring plate or the fan blade ^ the mouth of the mouth] (especially the molten plastic material is easy to produce after flowing through the port) The phenomenon of uneven distribution of quality, and :::. In each part, it is difficult to report the quality distribution of the sentence, and there is indeed a certain (4) accuracy. Based on the above reasons, the above-mentioned conventional fan wheel structure is improved. The present invention improves the above-mentioned disadvantages, in which one wheel shape and a plurality of bent portions If the wall portion and the ring plate portion are flying and bowed. The crucible is disposed at a junction between the portions, wherein the substantial thickness of the portion of the feather hub is greater than the substantial thickness of the portion of the shell away from the axis of the fan wheel. The overall weight of the fan wheel And at the same time, the fan wheel is increased to the average of the distribution of the shell 1 to increase the balance. [The present invention] The main purpose of the present month is to provide a fan wheel structure (2), one of which forms a part and a plurality of bends' The bent portion is disposed at each of the 曰 Ν Ν, wherein the substantial portion of the portion closest to the axis of the fan wheel is greater than the substantial thickness of the other portion, such that the farther away from the axis of the fan wheel, the smaller the substantial thickness Therefore, the invention has the effects of improving the positive displacement of the fan wheel and improving the balance precision. According to the fan wheel structure (2) of the present invention, a plurality of portions, a plurality of bent portions and a plurality of blades are formed by injection molding, wherein a substantial thickness of the portion closest to the axis of the fan wheel is greater than that of the other portion The substantial thickness, and ΡΚ10393 07/07/24 1325753, the further the substantial thickness of the remaining part away from the axis of the fan wheel is smaller; = the number of H of the bending part is equal to the nearest two parts = the number is lower than the farthest The outer circumference of the portion of the hub of the fan wheel. Thereby, the molybdenum forms the overall weight of the wheel, and the fan wheel mass distribution is increased/阙 to increase the balance precision. _Sentence, [Embodiment] In order to make the above and other objects, features and advantages of the present invention easy to understand, the following is a summary of the group, and the details are as follows: #图- In other words, because of the use of injection molding to make a fan wheel, the material of the fan wheel is preferably a plastic village material [, feather: polyphenylene sulfide, polypropylene, resin and povidone, etc.] 'If, there is better fluidity in the melt state. The molten metal material = one, the nozzle corresponding to the fan wheel mold - the injection port is injected into the fan wheel mold chamber to form the hub of the fan wheel, the position of the injection port in the ring plate structure is generally corresponding to the fan = = set so that the plasticity (four) located in the fan wheel mold can be turned into the gaps in the space. - in the construction of the \ and 2, the fan wheel of the first embodiment of the present invention is opposite; the fan: the Π: the crotch portion, wherein the plurality of parts are in accordance with the distance of the wheel hub 10 One of the first rounds of the wheel seal, U, that is, the first round of the fan wheel, the ring wall U (that is, the second part of the fan wheel 1) and the first and second plate parts 13 The rim is a 弟邛一 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , The outer edge of the cover portion 11 is formed by folding the outer peripheral edge of the cover portion 11 into a downward direction, and the top cover portion u and the ring step portion 12 collectively surround the inner space a; The ring plate portion 13 is formed by bending the end portion of the ring wall portion η radially outward. The fan wheel i further has a plurality of blades μ' which are formed to extend radially outward from the outer periphery of the ring plate portion 13, and the respective blades 14 are arranged at equal intervals.

堉麥照第圖所示，其係本發明第一實施例之扇輪 ^視圖，該扇輪之數個f折部至少包含-第-彎折部15 =第二彎折部16，該第—彎折部15形成於該頂蓋部n 及牆：12之間;該第二彎折部16則形成於該環牆部。衣板口Ρ 13之間。該第一彎折部15相對具有一夹角Θ 介於90度至u。度之間; 2 :有-夾角〜〔亦即該環牆部12無環二6The buckwheat is shown in the figure, which is a view of the fan wheel of the first embodiment of the present invention, wherein the plurality of f-folds of the fan wheel include at least a -th-bend portion 15 = a second bent portion 16, the first - a bent portion 15 is formed between the top cover portion n and the wall: 12; and the second bent portion 16 is formed at the annular wall portion. The plate is between the mouths 13 . The first bent portion 15 has an angle Θ of between 90 degrees and u. Between degrees; 2: yes - angle ~ [that is, the ring wall 12 is ringless 2

角〕，該夾角&較佳係介於3〇度至i 13間之夾該頂蓋部11係由該軸心座10之外周緣直:1。另外，形成，且該頂蓋部u之實質厚度Τ1 α卜延伸實質厚度T2;該環牆部12之實質厚於^牆部12之之實質厚度T3 ;本實施例之各扇葉；質=反部13 同於該環板部13之實質厚度丁3。貝具尽度選擇相空請再翏照第1及2圖所示，在利用成該扇輪1之過程中，該射料喷嘴會提供^成形方式形迫使該溶融之塑性村料輸送且充填入該扇力 PK :10393 妨07/24 1325753 間内，然而實際上相對於該成形空間内越遠離該注料口之位置，則而要更大之射出壓力來擠壓迫使該熔融之塑性材料填滿該位置之空隙，但過大之射出愿力容易使扇輪構造產生變形而造成品質不良，且會導致過多之物料浪費等缺點。本發明第-實施例藉由在該炫融之塑性材料每各該彎㈣後其所成形之該扇輪i之—部位〔相#於本^施 =衣;/回# 12〕的厚度小於未經過該彎折部前該炫融之料所成形之該扇輪1的另一部位〔相當於本實施例，頂蓋in的厚度’使得該扇輪i越遠離該扇輪1之實質厚度[例如：該環牆部、、厚又Τ2小於該頂盍部U之實質厚該扇輪〗所耗費;== 成形材料越少，藉此節省材料同時減輕該扇輪1之整體重量。戶“於在射出成形過程中，若射纽力過大容易導致維持較小之射出成質不良之情況，故避免原料之卞眷可，、隹持該扇輪構造之品質穩定性5且射出壓力的;提；因：戶本發明t該射料喷嘴提供相同之相對少於習用扇輪遠離其軸心位; 形材料，且本發明之扇輪，過各該弯折部後係相對縮減$實在每時不需增加射出屏hi 貝貝7子度故在射出成形實該成形空門內、^ 容融之塑性材料更加容易填 Β 該注料口之各空隙，藉此該扇輪i成 PK1C393 07/07/24 1325753 00各部位具有較佳之均勻厚度及質量分布’使得本發明確貝有助於提昇該扇輪1之整體平衡精確度’並減少該扇輪 1後續之調整平衡所需之時間。Angle], the angle & preferably is between 3 degrees and i 13 . The top cover portion 11 is straight from the outer periphery of the shaft seat 10: 1. In addition, the substantial thickness Τ1 α of the top cover portion u extends to a substantial thickness T2; the substantial thickness of the annular wall portion 12 is thicker than the substantial thickness T3 of the wall portion 12; each blade of the embodiment; The reverse portion 13 is the same as the substantial thickness of the ring plate portion 13. Please select the same as shown in Figures 1 and 2, in the process of using the fan wheel 1, the injection nozzle will provide a shape forming method to force the molten plastic material to be conveyed and filled. Into the fan force PK: 10393, 07/24 1325753, but in fact, the farther away from the injection port in the forming space, the greater the injection pressure to squeeze the molten plastic material Filling the gap in the position, but the excessive shot force is easy to deform the fan wheel structure, resulting in poor quality, and will lead to excessive material waste. In the first embodiment of the present invention, the thickness of the fan wheel i formed by the plastic material after the bending (four) is less than the thickness of the portion of the fan wheel i; Another portion of the fan wheel 1 formed by the material that has not been formed before the bending portion (corresponding to the thickness of the top cover in the embodiment) is such that the fan wheel i is farther away from the substantial thickness of the fan wheel 1 [For example, the ring wall portion, the thickness and the ridge 2 are smaller than the thickness of the top ram portion U.] The less the forming material, the more material is saved, thereby saving the material and reducing the overall weight of the fan wheel 1. "In the process of injection molding, if the injection force is too large, it is easy to maintain a small defect in the quality of the injection. Therefore, the raw materials are avoided, the quality stability of the fan wheel structure is maintained, and the injection pressure is maintained. Because of: the invention of the invention, the projecting nozzle provides the same relatively less than the conventional fan wheel away from its axial position; the shaped material, and the fan wheel of the present invention, after each of the bent portions, is relatively reduced by $ In fact, there is no need to increase the injection screen hi every time. Therefore, in the injection molding, the plastic material of the Rongrong is easier to fill the gaps of the injection port, whereby the fan wheel becomes PK1C393. 07/07/24 1325753 00 each part has a better uniform thickness and mass distribution 'so that the present invention helps to improve the overall balance accuracy of the fan wheel 1' and reduces the subsequent adjustment balance of the fan wheel 1 time.

請參照第3及4圖所示，其揭示本發明第二實施例之扇輪構造(二）。相較於第一實施例，第二實施例之數個扇葉Μ係軸向朝上彎折延伸形成於該扇輪〗之環板部13 的外周緣，且各該扇葉14係選自一弧形構造；各該扇葉 14係相互等間距環設排列於該環扳部13之外周緣；該扇輪^頂蓋部11的實質厚度T1自該軸心座1〇徑向朝外減’但該頂蓋部n之最小厚度仍大於該環牆部12 之實質厚度T2，藉此提昇該頂蓋部η之結構強度，並同時，該扇輪1之其他部位在成形後具有較佳之均勻厚度及 π上所述扇輪構造欲在射出成形之過Referring to Figures 3 and 4, there is disclosed a fan wheel structure (2) according to a second embodiment of the present invention. Compared with the first embodiment, the plurality of fan blade systems of the second embodiment are formed by bending upwardly in the axial direction and formed on the outer circumference of the ring plate portion 13 of the fan wheel, and each of the blades 14 is selected from the group consisting of An arc-shaped structure; each of the blades 14 is arranged at equal intervals to each other at an outer circumference of the ring portion 13; the substantial thickness T1 of the fan wheel cover portion 11 is radially outward from the shaft seat 1〇 Less than the minimum thickness of the top cover portion n is still greater than the substantial thickness T2 of the annular wall portion 12, thereby increasing the structural strength of the top cover portion η, and at the same time, other portions of the fan wheel 1 are formed after forming Good uniform thickness and π above the fan wheel structure to be formed in the injection molding

之厚度’反而導致該溶融之塑性 =不易填錢成形空間之空隙，造· f 生厚度及質量分布不均丄= 數個f折部，該f折部設置於各該部位間it 處、中最接近㈣輪軸心之衫部u = 於該其他雜之實f厚度，且_ 、、^ 丁2 ==度越小，藉此減輕該扇輪上ΐ 密度。之均勻性’以增加平衡精 ΡΚ10393 07/07/24 10 1325753The thickness 'instead, the plasticity of the melt is made = the voids in the forming space are not easily filled, and the thickness and mass distribution unevenness 造 = several f-folded portions are provided, and the f-folded portions are provided at the respective positions between the portions The closest (four) wheel core portion u = the thickness of the other miscellaneous f, and the smaller the _, ^ ^ 2 == degree, thereby reducing the density of the fan wheel. Uniformity' to increase balance fine ΡΚ10393 07/07/24 10 1325753

雖然本發明已利用上述較佳實施例揭示，然其迷# 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之内，相對上述實施例進行各種更動與修改仍屬本發明所保護之技術範疇’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。田 PK10393 07/07/24 一 11 一 1325753 【圖式簡單說明】第1圖：本發明第一實施例之扇輪構造(二)之立體圖。第2圖：本發明第一實施例之扇輪構造(二)之整體剖視及扇葉之局部剖視圖。第3圖：本發明第二實施例之扇輪構造(二)之立體圖。第4圖：本發明第二實施例之扇輪構造(二)之整體剖視及扇葉之局部剖視圖。Although the present invention has been disclosed in the above-described embodiments, it is intended that the present invention is not limited to the spirit and scope of the present invention. The technical scope of the invention is therefore to be determined as the scope of the invention is defined by the scope of the appended claims. Field PK10393 07/07/24 - 11 - 1325753 [Simple description of the drawings] Fig. 1 is a perspective view of the fan wheel structure (2) of the first embodiment of the present invention. Fig. 2 is a cross-sectional view showing a whole of a fan wheel structure (2) according to a first embodiment of the present invention and a partial cross-sectional view of the blade. Fig. 3 is a perspective view showing the structure (2) of the fan wheel of the second embodiment of the present invention. Fig. 4 is a cross-sectional view showing a whole of a fan wheel structure (2) according to a second embodiment of the present invention and a partial cross-sectional view of the blade.

【主要元件符號說明】 I 扇輪 II 頂蓋部 13 環板部 a 内部空間 T2 環牆部之實質厚度 Θ1夹角 10 轴心座 12 環牆部 14扇葉 T1 頂蓋部之實質厚度 T3 環板部之實質厚度〇 1夾角[Main component symbol description] I Fan wheel II Top cover part 13 Ring plate part a Internal space T2 The thickness of the ring wall part Θ1 Angle 10 Shaft seat 12 Ring wall part 14 Fan blade T1 The thickness of the top cover part T3 Ring The thickness of the plate is 〇1

PK10393 07/07/24 —12PK10393 07/07/24-12

Claims

、申請專利範圍： '、：種屬輪構造㈡，其包含：轴Q座，其設置於該扇輪之轴心位置，· 厚=蓋部’其連接該軸心座’且該頂蓋部具有一實質盎兮’其係連接於該頂蓋部之一端，且該頂蓋部質厚::二：形成一第一f折部5該環牆部之-實該頂盍部之實質厚度；部與該』板部牆部之另1，且該環牆質厚度小於該環牆部之^一育折部，該環板部之實數個扇葉，其开;士只貝厚度，及 2、依申請專利範圍第；%:板部之外周緣。第一彎折部具有一爽員所述之扇輪構造(二），其中該之間。 K ’咳夾角係介於90度至110度 3、依申請專利範圍第i 第二彎折部具有一失所述之扇輪構造(二），其中該之間。 A ’該夾角係介於30度至150度 4、依申請專利範圍第h * 其中各關葉料3項所述之扇輪構造(二）’ 各該扇葉之實質厚_排列於該環板部之外周緣，且 % 一種扇輪構該環板部之實質厚度。數個部位，其中最接^S . 度大於該其他部仇之屬輪軸心之該部位的實質厚 PK10393 07/07/24 、貝厚度’且越遠離該扇輪軸心 24 13 之該其餘部位的實質厚度越小；數個彎折部，其連接於該相鄰二部位之間；及數個扇葉，其連接於最遠離該扇輪軸心之該部位的外周緣。 6、依申請專利範圍第5項所述之扇輪構造(二），其中該數個部位至少包含一第一部位及一第二部位，該第一部位對應為該扇輪之一輪轂的一頂蓋部；該第二部位連接於該第一部位之一端，該第二部位對應為該扇輪之輪轂的一環牆部，且該第一部位及第二部位之間形成一第一彎折部。 7、依申請專利範圍第6項所述之扇輪構造(二），其中該數個部位另包含一第三部位，該第三部位連接於該第二部位之一端，其對應位於該扇輪之一環板部位，且該第二部位及第三部位之間形成一第二彎折部。 8、依申請專利範圍第7項所述之扇輪構造(二），其中該數個扇葉形成於該第三部位之外周緣，且各該扇葉為等間距排列。 9、依申請專利範圍第7或8項所述之扇輪構造(二），其中該第一部位之實質厚度大於該第二部位之實質厚度 ;該第二部位之實質厚度大於該第三部位之實質厚度 ;該扇葉之實質厚度不大於該第三部位之實質厚度。 10、依申請專利範圍第5、6、7或8項所述之扇輪構造(二），其中最接近該扇輪軸心之脊折部具有一夾角，該夾角介於90度至110度之間。 PK10393 07/07/24 ——14 -- 1325753 • 11 '依申請專利範圍第9項所述之扇輪構造(二），其中最 . 接近該扇輪軸心之彎折部具有一夾角，該夾角介於90 ' 度至110度之間。 12、依申請專利範圍第10項所述之扇輪構造(二），其中除 • 了最接近該扇輪軸心之彎折部之外，該其餘彎折部分 ' 別具有一夾角，該夾角介於30度至150度之間。 • 13、依申請專利範圍第11項所述之扇輪構造(二），其中除了最接近該扇輪轴心之彎折部之外，該其餘彎折部分 • 別具有一夾角，該夾角介於30度至150度之間。 PK10393 07/07/24 15 -Patent application scope: ',: species wheel structure (2), which includes: a shaft Q seat, which is disposed at the axial center position of the fan wheel, and a thickness = a cover portion 'which connects the shaft core seat' and the top cover portion Having a substantial ensemble 'connected to one end of the top cover portion, and the top cover portion is thick: 2: forming a first f-fold portion 5 - the substantial thickness of the top portion And the other part of the wall of the panel, and the thickness of the ring wall is smaller than the thickness of the ring wall portion, the real number of blades of the ring plate portion, the opening thereof; 2. According to the scope of application for patents; %: the periphery of the board. The first bent portion has a fan wheel configuration (2) as described by a cooler, wherein the between. The K' cough angle is between 90 degrees and 110 degrees. 3. According to the patent application range, the second bending portion has a fan wheel structure (2), wherein the between. A 'the angle between 30 degrees and 150 degrees 4, according to the patent application range h * wherein the fan wheel structure (2) of each of the leaf materials 3 (the thickness of each fan blade) is arranged in the ring The outer periphery of the plate portion, and % of a fan wheel constitutes the substantial thickness of the ring plate portion. a plurality of parts, wherein the most connected portion is greater than the substantial thickness of the portion of the other part of the wheel of the enemy, PK10393 07/07/24, the thickness of the shell is 'and the further away from the rest of the fan wheel axis 24 13 The smaller the substantial thickness is; the plurality of bent portions are connected between the adjacent two portions; and the plurality of blades are connected to the outer periphery of the portion farthest from the axis of the fan wheel. 6. The fan wheel structure (2) according to claim 5, wherein the plurality of parts comprise at least a first part and a second part, the first part corresponding to one of the hubs of the fan wheel a second cover portion is connected to one end of the first portion, the second portion corresponds to a ring wall portion of the hub of the fan wheel, and a first bend is formed between the first portion and the second portion unit. 7. The fan wheel structure (2) according to claim 6, wherein the plurality of parts further comprise a third part, the third part is connected to one end of the second part, and the corresponding position is located on the fan wheel a ring portion, and a second bent portion is formed between the second portion and the third portion. 8. The fan wheel structure (II) according to claim 7, wherein the plurality of blades are formed on the outer periphery of the third portion, and the blades are arranged at equal intervals. 9. The fan wheel structure (2) according to claim 7 or 8, wherein the first portion has a substantial thickness greater than a substantial thickness of the second portion; the second portion has a substantial thickness greater than the third portion The substantial thickness of the blade; the substantial thickness of the blade is not greater than the substantial thickness of the third portion. 10. The fan wheel structure (2) according to the fifth, sixth, seventh or eighth aspect of the patent application, wherein the ridge fold closest to the axis of the fan wheel has an angle of between 90 and 110 degrees. between. PK10393 07/07/24 ——14 -- 1325753 • 11 'The fan wheel structure (2) according to item 9 of the patent application scope, wherein the bending portion close to the axis of the fan wheel has an angle, the angle Between 90 'degrees and 110 degrees. 12. The fan wheel structure (2) according to claim 10, wherein the remaining bending portion has an angle other than the bending portion closest to the axis of the fan wheel, and the angle is Between 30 degrees and 150 degrees. • The fan wheel structure (2) according to claim 11 of the patent application scope, wherein the remaining bending portion has an angle other than the bending portion closest to the axis of the fan wheel, Between 30 degrees and 150 degrees. PK10393 07/07/24 15 -