1284334 九、發明說明： 【發明所屬之技術領域】 本發明所涉及的内容是一種整流器的製造方法，該整 流器由一個絕緣塑膠製成的單體支架、若干均勻繞轴安裝 的金屬整流片、以及一個具有若干補償元件的補償裝置構 成。其中，整流片固定在支架上，以成對或成組的方式， 通過安裝在支架内的補償元件相互連接。此外本發明還涉 及一種整流器，它由絕緣塑膠製成的單體支架、若干均勻 繞轴安裝的金屬整流片、以及具有若干補償元件的補償裝 置構成。其中整流片固定在支架上，以成對或成組的方式， 通過安裝在支架内的補償元件相互連接。 【先前技術】 衆所周知，整流器上電位相等的整流片須通過補償元 件相互連接構成通路，所有單個的補償元件在整體上構成 一個補償裝置。這種整流器的優點在於，可以減少多極電 動機所用電刷的數量，這特別有利於結構的簡化。此外， 電位相等的整流片相互連接，可以使極通量得以均衡，從 而使電動機的運轉均勻，減小轴承由於受力不均衡而形成 的應力。1284334 IX. INSTRUCTIONS OF THE INVENTION: TECHNICAL FIELD The present invention relates to a method of manufacturing a rectifier, which is composed of a single carrier made of insulating plastic, a plurality of metal fins mounted uniformly around the shaft, and A compensating device with several compensating elements is formed. Wherein, the fairings are fixed on the brackets, and are connected to each other in a pair or group manner by compensating elements mounted in the brackets. Furthermore, the invention relates to a rectifier comprising a unitary support made of insulating plastic, a plurality of uniformly arranged metal-wound segments, and a compensating means having a plurality of compensating elements. The fairings are fixed on the brackets, and are connected to each other in pairs or in groups by compensating elements mounted in the brackets. [Prior Art] It is known that the commutator segments of equal potential on the rectifier must be interconnected by compensating elements to form a path, and all of the individual compensating elements constitute a compensating device as a whole. The advantage of such a rectifier is that the number of brushes used in a multi-pole motor can be reduced, which is particularly advantageous for simplification of the structure. In addition, the commutator segments of equal potential are connected to each other to equalize the pole flux, thereby making the operation of the motor uniform and reducing the stress caused by the unbalanced force of the bearing.
在整流器的第一種結構方式中，補償元件由導線片段 構成，在整流器製造出來之後，將該導線片段連接到整流 片上（例如連接到轉子繞組的連接鉤上），並裝在整流器的 外部，特別是其圓周範圍内或某端面上（參見US 6320293 Bl、US3484634 A、EP 1073182 A2、DE19950370 B4 和 JP 1284334 2001103714 A)。這種結構的不利之處是，在整流器的製造 和/或其配用設備的運轉過程中，導線的絕緣層可能受損， 從而引起電位不同的整流片之間發生短路。為避免發生這 種情況，作出了以下設計··在電樞繞組形成之前，將構成 補償元件的導線片段放置到電樞上專門為此配用的槽内。 先將整流器生產出來之後，才可將補償元件與繞組一併製 成，這種方法的缺陷之處在於，額外使用了卷線機使生產 能力有所降低。 而在生產出來時0部已裝好補償裝置的整流器中，則 不存在上述兩種弊端。這種方法既使補償裝置得到保護， 又使其不依賴於電樞繞組的製造。然而根據現有的技術水 平（參見US6057626 A和DE 3901905 C1 )，在此必須使用 由扁鋼衝壓製成的、堅固性足夠高的特種補償元件，以避 免其在隨後進行的支架的塑膠熱壓成型過程中受損。這種 特製補償元件的製造和儲存會造成整流器相對較高的生產 成本。在DE10226182 A1中，支架内安裝的補償元件為金 屬搭接片，搭接片被以釺焊或熔焊方式固定在整流片上。 搭接片必須具有較高剛度，也就是必須具有較大的橫截 面，以便避免其在支架的熱壓成型過程中發生變形而導致 短路。此外，同樣是為了避免支架熱壓成型後由於接觸而 引起短路，搭接片之間、以及搭接片與整流片之間，必須 保持一個最小間距。這使得DE10116182 A1中所提供的結 構方式不適用於小型整流器。 對於支架由多個預製部件組合而成的整流器，其補償 1284334 元件裝配在支架和整流片之間的一個環形空腔中（參見jp 60162451 A)。這種整流器的生產成本相當高，在大規模應 用時與同類產品相比不具有競爭優勢。 【發明内容】 根據上述的技術條件，本發明所要解決的基本問題 為’如何創造出一種成本相對較低的整流器生產方法，且 採用該方法生產出來的小型號整流器也不易發生故障。 為了解決這一問題，本發明提供了一種整流器製造方 法，該整流器由一個由絕緣塑膠製成的單體支架、若干均 勻繞轴安裝的金屬整流片、以及一個具有多個補償元件的 補償裝置構成，其中整流片固定在支架上，以成對或成組 的方式’通過安裝在支架内的補償元件相互連接。製造工 序如下·· 制出一個由整流片組成的環形結構； --制出與所需補償元件數量相應的若干導線片段， 該導線片段由導體和包圍導體的絕緣外皮構成，且位於導 線片段兩端的絕緣外皮被剝離； --將導線片段的中部彎曲成弧形； 使導線片段的導體兩端與相對應整流片上的連接 件相連形成通路； —一將裝配好導線片段的環形結構裝入一個組合式的 塑膠射出成型工具，使導線片段在塑膠成型工具閉合時， 喪入若干在成型工具某部分上以繞軸方式裝配的支撐槽 中； 1284334 --在裝有補償元件的條件下，將塑性擠壓材料灌入 ^ 成型空腔； --等待塑膠硬化； ——打開射出成型模，取出整流器毛坯； --將整流器毛述加工完成。 按本發明方法所製造的整流器，其所用的補償裝置被 裝入塑膠製成的單體支架中，這種生產方法的特點為：在 _ 製造補償裝置時使用了若干導線片段，每個導線片段的導 體兩端裸露、其餘部分則被絕緣外皮包圍（在每兩個整流 片之間進行連接）。在中部預先被彎曲成弧形之後，導線片 段兩端分別由專用的連接件連到兩個整流片上，且最好連 接在整流片徑向内侧面。在支架射出成型時，將導線片段 通過支撑體加以支推和固定，有效地防止了由導線片段構 成的補償元件在支架——該支架將導線片段全部包圍__ 喷壓成型時被損壞，此時所用的支撐體裝配在射出成型工 具某部分上，其外觀呈槽形，在裝有導線片段的環形結構 # 被放入射出成型工具、以及射出成型工具隨後關閉時，導 線片段將嵌入這些槽形支撐體中。由於在塑膠支架的射出 成型過程中有槽體對補償元件加以支撐，因此可使用特別 廉價的、不具有特殊堅固性的常規導線。導體都有絕緣外 皮包圍’當導線片段相互接觸時不會產生危害。這在實際 應用當中即意味著，在製造補償元件時，可以將所準備的 導線剪切為一定尺寸的導線片段。與傳統類型整流器的製 造方法相比，此種方法可節省大量成本。該種方法的另一 Ϊ284334 個優點為，生產各種不同整流器的補償裝置時，可使用常 規型標準導線作為原材料。本發明方法使用的是同一種原 材料，它尤其適合生產以下類型的整流器：即通過導線片 段使整流片以三個或更多為一組而相互連接、構成通路。 這種情況下，根據待連接的整流片數量，將導線片段末端 上一處或多處的絕緣外皮剝離，再將相應位置上裸露出的 導體通過連接零件連接到一個或多個整流片上。 以下内容中，將（僅）對一類整流器進行介紹，該類 整流器的整流片通過補償元件成對地連接在一起構成通 路；而這並不意味著，以上說明内容僅局限於此種結構的 整流器。 根據本發明推薦的第一種改進方案，導線片段的兩端 以機械性夾緊方式固定在整流片上。在此所用的整流片 上，可配有兩個在徑向上向内延伸突出的夾緊片，這兩個 夾緊片的彎曲方向相對，可以將放置在其中的導線片段的 末端夾緊。這種夾緊片尤其可以作為使整流片固定在支架 中的電樞部件的一部分。導線片段與整流片的機械性夾緊 連接可以作為唯一的連接結構，但也可僅作為在對導線片 段與整流片進行釺焊或熔焊、例如鐳射焊或電阻焊之前的 機械性固定方式。在本發明當中，這種機械性夾緊的固定 方式並不是絕對必需的，更多情況下是將導線片段與整流 片二釺焊、熔焊、導電性粘貼、或類似方式連接起來，而 在焊接之前並不採用上述的機械緊固方式。 根據本發明的另一種改進方案，導線片段的整流片材 1284334 料為銅。導線片段的絕緣外皮則可由不同材料構成，例如 漆、聚四氣乙烯、或矽。應根據製造整流器過程中絕緣層 所受應力（機械應力和熱應力）而選擇適合的絕緣材料。 ， 在本發明的多數結構方案、尤其是低成本的方案中，使用 漆包絕緣層足以滿足要求。 本發明的另一種改進方案，則有利於導線片段的準 備、特別是將絕緣外皮從導線兩端剝離的過程。在從規定 φ 位置上的導體裸露處切開而製成導線片段之前，先以扭轉 方式將某些部位上絕嫁外皮部分除去。利用這種方式可以 同時準備多個導線片段’而在去除兩端的絕緣外皮時，不 需要將每段導線片段壓緊，由此可以節省大量成本。這種 方式特別適用於絕緣外皮牢固附著在整流片上、不易從整 流片上以管狀剝離下來的情況。當絕緣外皮與整流片之間 的附著程度較低，易於全部以管狀剝離下來時，在去除兩 端的絕緣外皮之前，也可先將導線片段剪切成形。 本發明可以與各種整流器結構方式、以及不同的整流 鲁器製造方法結合應用。它不僅適用於補償元件的連接件被 安裝在整流片徑向内側的筒形整流器，而且更適合於端面 式整流器。在此，容納最終的成型整流片的環形結構是由 一個導體毛述構成--整流片由與之整體生產出來、然後 - 被卸除的搭接片相互連接在一起--還是由一個含有整流 片的籠形繞組形成，並不重要。這一點僅對於不帶有補償 裝置的類似整流器毛坯的傳統式成型加工工序有關鍵意 義。電刷滑動面是否直接位於整流片上，或位於與整流片 10 1284334 相連構成通路的碳刷上，對於本發明也並無關鍵意義。 將本發明應用於筒形整流器時，補償裝置導線片段的 弧形部分最好安置在支架裝有整流片連線片的端面上。對 於具有典型結構的整流器，在座成型時用於支撐導線片段 的支撐體’尤其應安裝在支架壁特別厚的部位，使支撐體 在支架中留下的壓印不會對整流器的機械特性造成損害。 此外，選擇在射出模的成型空腔中的塑膠射出區域時，應 注意使導線片段可通過注入模内的塑膠被壓入槽形的支撐 體中。 儘管根據前述内容導線片段弧形部分的安裝位置最好 應與連線片相鄰，然而導線片段末端與整流片相連的連接 點最好應與整流片連接鈎隔開。這種結構既可保證製造整 流器時易於接近連接點，又可以在轉子繞組焊接到整流器 連接點上時，使導線片段與整流片間的連接結構所受的熱 應力盡可能地小。根據本發明所設計的筒形整流器，最好 應具有以下結構：當導線片段除了位於中部的藏形部分之 外，有兩個延伸方向與整流器的轴大體平行的側部，且這 兩個侧部跨越連接了導線片段弧形部分與連接點之間的間 距。如果導線片段的弧形部分與補償元件在整流片上的連 接點之間沒有這一轴向連接關無，沒有絕緣外皮包圍的整 流片兩端將與導線片段中部弧形部分直接相鄰。 對於不同的導線片段，其與整流器轴相平行的側部的 長度可有所差異。這樣，儘管導線片段的連接點位於同一 個平面，但導線片段中部弧形部分的安裝位置卻可位於軸 1284334 向上的不同平面内，呈階梯狀分佈。在這種情況下，所有 的導線片段的中部弧形部分可具有相同的曲率半徑，且大 體處於同-圓柱面上。這種結構可儘量避免整流器的不平 、 衡問題，從而延長其使用壽命。 同樣，為了盡可能減低整流器的不平衡性，對於繞軸 分佈的、在兩個相對的整流片之間起到成對連接作用的導 線片段，在每個整流片下方通過（而不與其相接觸）的導 • 線片段的數量應是整流片數量的四分之一或更少。因此， 當整流器上有16個整流片時，每個整流片下方應通過三個 或四個不與其接觸的導線片段；當整流器具有18個整流片 時，每個整流片下方應通過四個導線片段；當整流器上具 有20的整流片時，每個整流片下方應通過四個或五個導線 片段。 【實施方式】 茲配合附圖對本發明的實施例說明於下： 圖3與圖4中筒形整流器支架丨的射出成型工具2包 括上部3和下部4。為了形成將整流器固定到轉子上專用 的、以軸5為中心穿過支架1的孔眼6，在成型工具的下部 4上配有一個圓柱形芯體工具下部4由護套8包圍。工 具下部3與壓板9相靠臨，從而共同構成澆道的界限。工 具上部3具有一錐形突起1〇,作用為形成整流器支架！的 相應空腔。 在圖中處於閉合狀態的射出成型工具中，放入一個環 形結構11，該環形結構由大體呈圓柱形的導體毛坯構成。 12 1284334 導體毛坯包括20個整流片13,每兩個相鄰整流片13通過 搭接片14相連’該搭接片與整流片作為整體生產出來’隨 後當支架硬化、整流器毛坯從射出成型工具中被取出時， 該搭接片則被分離卸除下來，以便使整流片13相互間隔絕 緣。在本設計案例中，搭接片14與整流片13的壁厚相同， 在將導體毛坯12分成單個的整流片13時，搭接片14材料 可通過鋸切面S被去除。通過相應的密封區15和16,成型 工具的上部4和下部5與導體毛坯12的密封面相互隔絕。 在此所用的射出成型技術傳統技術、尤其是常用的不 帶補償裝置的整流器的製造方法類似，概不贅述。 每兩個徑向相對的整流片13之間，通過補償元件17 相連接而形成通路。相應地，筒形整流器的補償裝置18共 包括10個補償元件17。其中每個補償元件均由一個導線片 段19構成，該導線片段的中部為半圓形區域20，兩個側部 區域21的延伸方向與整流器軸5相平行。導線片段19由 絕緣外皮22包圍的銅導體構成，在導體兩個末端23上的 絕緣外皮22被剝離，使該處的導體24裸露出來。 為了使導線片段19的末端23與整流片13形成相互夾 緊的機械性結構，安裝在整流片13徑向内側的兩個電樞部 件25上、即與連接鈎26——該連接鈎在導體毛坯上還未被 彎曲——相間隔的電樞繞組上，有兩個夾緊片，可將導體 24的裸露端28固定夾緊。電樞部件25構成連接件19，通 過連接件，補償元件17與整流片13相互連接形成通路。 為了形成更好的接觸，應將導體24的裸露端28與電樞之 13 .1284334 間再加以焊接。由於在製造支架1時連接鈎26呈延展形 狀，因此成型工具下部4的密封區16應設計為分級式。 射出成型工具2的下部4的内端面30上，配有5條向 端面内凹陷、並以轴5為中心均勻分佈的軸向支撐槽31。 該支撐槽大體呈U形，其目的是··將裝配了補償元件的導 體毛坯12置入成型工具下部4時，導線片段19中部的半 圓形部分可以嵌入支撐槽的槽口 32中。在成型工具上部3 有一處突起10，此處是澆道A的開口位置。將塑膠通過澆 道開口處注入閉合的射出成型工具2時，導線片段19被塑 膠壓入並固定在支撐槽内。 【圖式簡單說明】 圖1.根據本發明、用於進一步加工成筒形整流器的、 已裝配好補償元件的導體毛坯的斜視圖； 圖2·在圖1之導體毛链上作為其中一個補償元件而使 用的導線片段的斜視圖； 圖3·在將支架喷壓到圖1導體毛述上時射出成型丁 p 的輛向剖面圖； 圖4·圖1導體毛链放置在圖3射出成型工具下部時的 斜視圖。 【主要元件符號說明】 1筒形整流器支架 2 射出成型工具 3上部 4 下部 5軸 6 孔眼 14 1284334 7圓枉形芯體 9壓板 11環形結構 14搭接片 17補償元件 20半圓形區域 22絕緣外皮 24導體 26連接鈎 30内端面 8 護套 10錐形突起 13整流片 15、16 密封區 18補償裝置 21側部區域 23末端 25電樞部件 28裸露端 31支撐槽In the first configuration of the rectifier, the compensating element consists of a wire segment which, after the rectifier is manufactured, is connected to the commutator (for example to the connecting hook of the rotor winding) and to the outside of the rectifier. In particular in its circumferential extent or on an end face (see US Pat. No. 6,320,293, US Pat. No. 3,348,634 A, EP 1073182 A2, DE 19950 370 B4 and JP 1284334 2001 103 714 A). The disadvantage of this configuration is that during the manufacture of the rectifier and/or the operation of its associated equipment, the insulating layer of the conductor may be damaged, causing a short circuit between the commutators having different potentials. In order to avoid this, the following design was made: Before the armature winding was formed, the wire segments constituting the compensating element were placed in a groove specially equipped for the armature. After the rectifier is produced, the compensating element can be made together with the winding. The drawback of this method is that the additional winding machine is used to reduce the production capacity. In the rectifier where 0 parts of the compensation device are installed at the time of production, there are no such two disadvantages. This method not only protects the compensating device, but also makes it independent of the manufacture of the armature winding. However, according to the state of the art (see US Pat. No. 6,057,726 A and DE 3 901 905 C1), it is necessary here to use special compensating elements which are made of flat steel and which are sufficiently strong enough to avoid the plastic hot press forming of the subsequent stents. Damaged in the process. The manufacture and storage of such special compensation components can result in relatively high production costs for the rectifier. In DE 10 226 182 A1, the compensating element mounted in the bracket is a metal strap and the strap is fastened to the fairing by means of brazing or welding. The lap joints must have a relatively high stiffness, i.e., must have a large cross section in order to avoid deformation during the hot press forming of the stent resulting in a short circuit. In addition, it is also necessary to avoid a short circuit caused by contact after hot press forming of the stent, and a minimum spacing must be maintained between the straps and between the strap and the fairing. This makes the structure provided in DE 10116182 A1 unsuitable for small rectifiers. For a rectifier in which the bracket is composed of a plurality of prefabricated components, the compensation 1284334 component is fitted in an annular cavity between the bracket and the commutator (see jp 60162451 A). The cost of production of such a rectifier is quite high, and it does not have a competitive advantage over similar products in large-scale applications. SUMMARY OF THE INVENTION According to the above technical conditions, the basic problem to be solved by the present invention is how to create a relatively low-cost rectifier production method, and a small-sized rectifier produced by the method is also less prone to failure. In order to solve this problem, the present invention provides a method of manufacturing a rectifier comprising a unitary support made of insulating plastic, a plurality of uniformly arranged metal-mounted segments, and a compensating device having a plurality of compensating elements. Wherein the fairings are fixed to the brackets and are connected to each other in pairs or in groups by compensating elements mounted in the brackets. The manufacturing process is as follows: • Producing a ring structure composed of a commutator piece; - producing a plurality of wire segments corresponding to the number of required compensating elements, the wire segment being composed of a conductor and an insulating sheath surrounding the conductor, and located in the wire segment The insulating sheath of the end is peeled off; - the middle portion of the wire segment is curved into an arc shape; the ends of the conductor of the wire segment are connected to the connecting members on the corresponding commutator segments to form a passage; - a ring structure in which the wire segments are assembled is loaded into a The combined plastic injection molding tool causes the wire segments to be immersed in a support groove that is axially assembled on a part of the forming tool when the plastic forming tool is closed; 1284334 - under the condition of compensating components, The plastic extrusion material is poured into the molding cavity; - waiting for the plastic to harden; - opening the injection molding die, taking out the rectifier blank; - processing the rectifier description. The rectifier according to the method of the invention is provided with a compensating device which is incorporated into a single-piece plastic holder. This production method is characterized in that a number of wire segments are used in the manufacture of the compensation device, each wire segment. Both ends of the conductor are bare and the rest are surrounded by an insulating sheath (connecting between each two commutator segments). After the central portion is previously curved into an arc shape, both ends of the wire segment are respectively connected to the two commutator segments by a dedicated connecting member, and are preferably connected to the radially inner side of the commutator segment. When the stent is injection molded, the wire segment is supported and fixed by the support body, thereby effectively preventing the compensating component composed of the wire segment from being damaged in the bracket when the bracket completely surrounds the wire segment. The support body used in the assembly is mounted on a part of the injection molding tool, and its appearance is groove-shaped. When the annular structure # with the wire segment is placed out of the molding tool, and the injection molding tool is subsequently closed, the wire segments are embedded in the grooves. In the shape of the support. Since the groove body supports the compensating element during the injection molding of the plastic holder, it is possible to use a conventional wire which is particularly inexpensive and which is not particularly robust. The conductors are surrounded by an insulating sheath. 'When the wire segments are in contact with each other, there is no danger. In practical applications, this means that the prepared conductor can be cut into conductor segments of a certain size when the compensation component is manufactured. This approach saves a lot of cost compared to conventional types of rectifier manufacturing methods. Another advantage of this method is 284,334. When producing compensation devices for various rectifiers, conventional standard wires can be used as raw materials. The method of the present invention uses the same raw material, which is particularly suitable for producing a type of rectifier in which the segments are connected to each other in groups of three or more by a wire segment to constitute a passage. In this case, depending on the number of segments to be joined, one or more insulating skins on the ends of the wire segments are peeled off, and the exposed conductors at the corresponding positions are connected to one or more fairings through the connecting members. In the following, a class of rectifiers will be described (only), and the commutator segments of such rectifiers are connected in pairs by compensating elements to form a path; this does not mean that the above description is limited to the rectifier of such a structure. . According to a first modification proposed by the present invention, both ends of the wire segment are fixed to the commutator piece by mechanical clamping. The commutator used herein may be provided with two clamping pieces which project radially inwardly and projectingly, the two clamping pieces being oriented in opposite directions to clamp the ends of the wire segments placed therein. Such a clamping piece can in particular be part of an armature part in which the fairing is fixed in the bracket. The mechanical clamping connection of the wire segments to the fairings can be used as the sole connection structure, but can also be used only as a mechanical fixing means for the wire segments and the fairings before butt welding or welding, such as laser welding or electric resistance welding. In the present invention, the fixing method of the mechanical clamping is not absolutely necessary, and in many cases, the wire segment is connected to the commutator piece by soldering, welding, conductive bonding, or the like, and The above mechanical fastening method is not used before welding. According to another refinement of the invention, the rectifying sheet 1284334 of the wire segment is made of copper. The insulating sheath of the wire segment may be composed of different materials such as lacquer, polytetraethylene, or ruthenium. The appropriate insulation material should be selected according to the stress (mechanical stress and thermal stress) of the insulation layer during the manufacture of the rectifier. In most structural solutions of the invention, especially in low cost, the use of an enamel insulating layer is sufficient. Another improvement of the present invention facilitates the preparation of the wire segments, particularly the process of peeling the insulating skin from both ends of the wire. Before the wire segments are cut from the exposed portions of the conductors at the specified φ position, the portions of the die-negative skin are removed in a twisted manner. In this way, a plurality of wire segments can be prepared at the same time. When the insulating sheaths at both ends are removed, it is not necessary to press each segment of the wire, thereby saving a large amount of cost. This method is particularly suitable for the case where the insulating sheath is firmly attached to the commutator piece and is not easily peeled off from the fin piece in a tubular shape. When the degree of adhesion between the insulating sheath and the commutator is low, and it is easy to peel off all of the tubular shape, the wire segment may be first sheared before the insulating sheath of both ends is removed. The invention can be applied in conjunction with various rectifier configurations and different rectifier manufacturing methods. It is not only suitable for the cylindrical rectifier in which the connecting member of the compensating element is mounted radially inside the commutator, but also more suitable for the end face rectifier. Here, the annular structure accommodating the final shaped commutator is composed of a conductor profile - the commutator segments are integrally connected to each other and then the detached lap joints are connected to each other - or by a rectification The formation of the cage windings is not important. This is only critical for conventional molding processes like rectifier blanks without compensating devices. Whether the brush sliding surface is directly on the commutator or on the carbon brush that is connected to the fairing 10 1284334 to form a passage is also not critical to the present invention. When the present invention is applied to a cylindrical rectifier, the arcuate portion of the wire segment of the compensating device is preferably placed on the end face of the bracket on which the segments of the commutator are attached. For a rectifier with a typical structure, the support for supporting the wire segments during the forming of the seat should be mounted especially on the particularly thick part of the support wall, so that the impression left by the support in the support does not damage the mechanical properties of the rectifier. . In addition, when selecting the plastic ejection area in the molding cavity of the ejection mold, care should be taken to allow the wire segments to be pressed into the groove-shaped support through the plastic injected into the mold. Although the arcuate portion of the wire segment is preferably placed adjacent to the wire according to the foregoing, the connection point at the end of the wire segment to the segment is preferably spaced apart from the segment connection bar. This structure ensures that the connection point is easily accessible when the rectifier is manufactured, and that the thermal stress applied to the connection between the wire segment and the commutator is as small as possible when the rotor winding is soldered to the junction of the rectifier. Preferably, the cylindrical rectifier designed in accordance with the present invention has the following structure: when the wire segment has a side portion extending substantially parallel to the axis of the rectifier except for the hidden portion located at the middle portion, and the two sides The portion spans the spacing between the curved portion of the wire segment and the connection point. If there is no such axial connection between the curved portion of the wire segment and the connection point of the compensating element on the commutator, the ends of the fin that are not surrounded by the insulating sheath will be directly adjacent to the arcuate portion of the middle portion of the segment. For different wire segments, the length of the side parallel to the rectifier axis can vary. Thus, although the connection points of the wire segments are located on the same plane, the arc-shaped portions of the middle portion of the wire segments can be placed in different planes in the upward direction of the axis 1284334, and are arranged in a stepped manner. In this case, the central curved portions of all of the wire segments may have the same radius of curvature and are generally on the same-cylindrical surface. This structure minimizes the unevenness and balance of the rectifier and prolongs its service life. Similarly, in order to minimize the imbalance of the rectifier, a wire segment distributed around the axis that acts as a pair between the two opposite fairings passes under each commutator (without contact with it) The number of wire segments should be one quarter or less of the number of segments. Therefore, when there are 16 rectifiers on the rectifier, there should be three or four wire segments not in contact with each of the segments; when the rectifier has 18 segments, four wires should pass under each segment. Fragment; when there are 20 fairings on the rectifier, there should be four or five wire segments under each commutator. [Embodiment] An embodiment of the present invention will be described below with reference to the accompanying drawings: The injection molding tool 2 of the cylindrical rectifier holder 图 of Figs. 3 and 4 includes an upper portion 3 and a lower portion 4. In order to form an eyelet 6 for fixing the rectifier to the rotor through the bracket 1 centered on the shaft 5, a cylindrical core tool lower portion 4 is provided on the lower portion 4 of the forming tool surrounded by the sheath 8. The lower part 3 of the tool is adjacent to the pressure plate 9 to collectively form the boundaries of the runner. The upper part 3 of the tool has a tapered protrusion 1 〇 which acts to form a rectifier bracket! Corresponding cavity. In the injection molding tool in the closed state in the figure, a ring-shaped structure 11 is formed which is composed of a substantially cylindrical conductor blank. 12 1284334 The conductor blank comprises 20 fairings 13 , and each two adjacent fairings 13 are connected by a web 14 'the strip and the fairing are produced as a whole'. Subsequently, when the bracket is hardened, the rectifier blank is taken out from the injection molding tool. When removed, the straps are separated and removed to insulate the fairings 13 from each other. In the present design case, the lap piece 14 has the same wall thickness as the commutator piece 13, and when the conductor blank 12 is divided into individual segments 13, the material of the lap piece 14 can be removed by the sawing surface S. The upper and lower portions 4 and 5 of the forming tool are isolated from the sealing faces of the conductor blank 12 by the respective sealing zones 15 and 16. The conventional techniques of injection molding techniques used herein, and in particular the conventional methods of manufacturing rectifiers without compensation devices, are similar and will not be described again. A path is formed between each of the two diametrically opposed segments 13 by the compensation elements 17 being connected. Correspondingly, the compensation device 18 of the cylindrical rectifier comprises a total of 10 compensation elements 17. Each of the compensating elements consists of a wire segment 19, the middle of which is a semi-circular region 20, the two side regions 21 extending in parallel with the rectifier shaft 5. The wire segment 19 is composed of a copper conductor surrounded by an insulating sheath 22, and the insulating sheath 22 on both ends 23 of the conductor is peeled off to expose the conductor 24 there. In order to form the mechanical structure in which the end 23 of the wire segment 19 and the fairing 13 form a mutual clamping, the two armature members 25 radially on the inner side of the fairing 13 are mounted, that is, with the connecting hook 26 - the connecting hook is on the conductor The blank has not been bent - there are two clamping tabs on the spaced armature windings that securely clamp the exposed end 28 of the conductor 24. The armature member 25 constitutes a connector 19 through which the compensating element 17 and the commutator segments 13 are connected to each other to form a passage. In order to create a better contact, the exposed end 28 of the conductor 24 and the armature 13.1284334 should be soldered. Since the connecting hook 26 is in an elongated shape when the bracket 1 is manufactured, the sealing portion 16 of the lower portion 4 of the forming tool should be designed in a graded manner. The inner end surface 30 of the lower portion 4 of the injection molding tool 2 is provided with five axial support grooves 31 which are recessed in the end surface and uniformly distributed around the shaft 5. The support groove is generally U-shaped for the purpose of placing the conductor blank 12 equipped with the compensating element into the lower portion 4 of the forming tool, and the semicircular portion in the middle of the wire segment 19 can be embedded in the notch 32 of the support groove. There is a projection 10 in the upper part 3 of the forming tool, here the opening position of the runner A. When the plastic is injected into the closed injection molding tool 2 through the sprue opening, the wire segments 19 are pressed and fixed in the support grooves by the plastic. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a conductor blank having a compensating element assembled for further processing into a cylindrical rectifier according to the present invention; FIG. 2 is a compensation for one of the conductor chains of FIG. A perspective view of a wire segment used for the component; Figure 3 is a cross-sectional view of the injection molding of the injection molding p when the stent is sprayed onto the conductor of Figure 1; Figure 4 is a projection of the conductor filament in Figure 3 Oblique view of the lower part of the tool. [Main component symbol description] 1 cylindrical rectifier bracket 2 injection molding tool 3 upper 4 lower 5 shaft 6 eyelet 14 1284334 7 round 芯 core 9 pressure plate 11 annular structure 14 lap piece 17 compensation component 20 semicircular area 22 insulation Outer skin 24 conductor 26 connection hook 30 inner end face 8 sheath 10 tapered protrusion 13 fairing 15 , 16 sealing zone 18 compensating device 21 side region 23 end 25 armature member 28 bare end 31 supporting groove