TW201145767A - Rotor phase difference elimination structure of DC brushless motor - Google Patents

Rotor phase difference elimination structure of DC brushless motor Download PDF

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Publication number
TW201145767A
TW201145767A TW99117879A TW99117879A TW201145767A TW 201145767 A TW201145767 A TW 201145767A TW 99117879 A TW99117879 A TW 99117879A TW 99117879 A TW99117879 A TW 99117879A TW 201145767 A TW201145767 A TW 201145767A
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Taiwan
Prior art keywords
rotor
brushless motor
phase difference
frame body
magnet
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TW99117879A
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Chinese (zh)
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TWI398078B (en
Inventor
Mei-Li Su
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Power Circling Co Ltd
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Publication of TWI398078B publication Critical patent/TWI398078B/zh

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Abstract

The invention relates to a rotor phase difference elimination structure of a DC brushless motor. The DC brushless motor includes a motor and a stator. The motor includes a core. An inner metal piece is disposed on the surface of the core. An outer metal piece is disposed outside the inner metal piece. A shock absorbing rubber is disposed between the inner and the outer metal pieces. Multiple N-pole and S-pole magnets are disposed on the surface of the outer metal piece which generate magnetic force with respect to the stator. The DC brushless motor further includes a phase difference elimination structure. The phase difference elimination structure includes a frame fixed at one edge of the rotor and in contact with the outer metal piece of the rotor, and an verifying magnet disposed on the frame. The verifying magnet, the frame and the rotor are coupled together to ensure the phase angle of the verifying magnet and the rotor keeps at the same angle.

Description

201145767 六、發明說明: 【發明所屬之技術領域】 本發明係有關-種轉子相位差消除結構,·減震直流無刷 馬達技術領域。 【先前技術】 按,直流無刷馬達為降低轉糾產生之震動噪音,多會於轉 子與心軸間包覆-橡膠體,其中如tw_M337925號『減震型馬達 Φ 轉子』,遂為發明人率想克服之技術手段。 上述直流無刷馬達透過轉子與雄間包覆—橡频創意,固 然可獲得減震、降低嗓音目的,但經發明人長時間反覆測試後發 現’於心轴内、外金屬管間包覆減震、降低噪音之橡膠體,卻衍 生出其以下所述嚴重之技術課題: 配合參照第五_示’由於目流無刷馬達轉子感應相位 角之檢知磁鐵10 〇,係組裝在轉子心轴2 〇 〇上 ’而減震橡膠201145767 VI. Description of the Invention: [Technical Field] The present invention relates to a rotor phase difference eliminating structure, and a technical field of a shock absorbing DC brushless motor. [Prior Art] According to the DC brushless motor, the vibration noise generated by the rotation correction is more likely to be coated between the rotor and the mandrel - the rubber body, such as tw_M337925 "damping type motor Φ rotor", which is the inventor The technical means to overcome. The above-mentioned DC brushless motor is coated with the rotor and the male--the rubber frequency, although the shock absorption and the reduction of the sound can be obtained. However, after repeated tests by the inventor for a long time, it is found that the coating between the inner and outer metal tubes of the mandrel is reduced. The rubber body that is shocking and noise-reducing has its serious technical problems as described below: With reference to the fifth_shower, the magnet 10 〇 is detected in the rotor shaft due to the sense phase of the brushless motor rotor. 2 〇〇上' and shock absorbing rubber

卻包覆於轉子,加上賴震橡膠她於金屬财之心轉硬度偏 軟以致於’备心轴有扭力產生,而轉子上做為磁區分割感應轉 速之N、S極顧’衫奸韻働下,礙_震娜材料過軟 而產生變形量,該過大_制會造私軸之她雜子相位不 -致(如第五A圖所示)(即蓋生—預設㈣度之相位角偏差), 則會造成錢無刷馬達制似錯誤,連帶定子之磁場轉換訊息 亦產生錯誤,鱗減㈣錢無刷馬達之正確運作。 3 m 201145767 再者’直流無刷馬達因材質偏軟之減震橡膠變形量產生檢測 相位與轉子相位偏差,使得N s極磁鐵換向與觸發推力相位不正 確情況下,亦會造成直流無刷馬達之效能大幅降低。 諸如上述減震型直流無刷馬達為克服馬達震動噪音,另行衍 生出心軸與轉子她肖不—致之馬達運作錯誤及效麟低等技術 課題,實有待業界先進提出有效之解決技術方案。 【發明内容】 • 本發明係提供一種可有效消除轉子相位差之直流無刷馬達轉 子相位差消除結構。 為達上述目的所運用之直流無刷馬達之轉子相位差消除結 構,其中該直流無刷馬達内設有一轉子及一定子,該轉子之心軸 第一、第二兩端分設一轴承’心轴對應轉子位置則設有一内金屬 件’該内金屬外部則設有一外金屬件,該内、外金屬件間則包覆 一減震橡膠’該外金屬件表面則組設有若干個與定子產生驅動釅 φ力之N、S極磁鐵;以及-相位差消除結構,具有一架體及一組設 於架體之-檢知磁鐵’該架體係由心軸第二端穿入後,其底面則 貼抵固設於轉子外金屬件位置,令檢知磁鐵、架體與轉子三者結 合為一’以確保檢知磁鐵與轉子同軸、同步作動,令檢知磁鐵: 轉子之相位角可永保同軸、同角度’以確保直流無刷馬達之效能 維持正常。 【實施方式】 本發明係有關-種直流無义馬達之轉子相位差消除結構,參⑸ 201145767 照第一至三圖所示,該直流無刷馬達包含-轉子1〇及一定子2 0 :其中: 該轉子10,該具有貫穿轉子二端之一心軸1丄,該心轴丄 1第一端套設有—第—軸承12 ’第二端則套設有—第二轴承i 3,該心軸11第二端近第二軸承處則形成有—溝槽丄丄丄:該 心軸1 1對應轉子1〇部位則套設有一内金屬件14,該内金屬 件1 4可選用較符合經濟效益之金屬管,較佳者則可選用石夕鋼 籲片’該内金屬件14外部另组設有一外金屬件2 5,圖式例所揭 之外金屬件最佳者初鋼片,該内金屬件i 4與外金屬件丄5之 間,則透過包覆一減震橡膠i 6相互連結,又該外金屬件丄5外 部表面則間隔黏固設複數個磁鐵i 7,該複數磁鐵係以一N極、 一 S極方式間隔設置,每一N極與s極磁鐵丄了間則形成有一分 隔線1 8 ; 該定子2 0,則設置於轉子1〇外部周緣,並可與轉子最外 馨層之N、S極磁鐵17產生磁性,並隨著對應轉子之磁鐵極性,而 於相吸、相斥過程驅動轉子作動;以及 一相位差消除結構,主要包含一架體31及一檢知磁鐵3 2,該架體3 1如第二、三圖所示,為一階級狀之金屬架(亦可 為其他可導磁(電)金屬取代),該階級狀之架體並開設有一轴孔 312,該軸孔312之孔徑並大於心轴11直徑,使該架體3 1並不會干涉心軸之運作。前述之架體31則由心軸第二端方向 套入,並藉由底面314與矽鋼片實施態樣之外金屬件15相互 201145767 接觸,固設於金屬件i 5上,該檢知磁鐵3 2,則套設於階級狀 架體31相異底面之頂面端,令檢知磁鐵3 2、架體3丨及轉子 10三者結合為-體,以獲得同步作動之功效者。 本發明透過上述轉子—端結合—架體,該架體再組設一檢知 磁鐵新穎_,職_之功_可_第二錢進—步說明之: 由於本發明之檢知磁鐵,有別與傳統減震直流無刷馬達組設 於心軸,而是透過增設一金屬架體3工於轉子一端,並將該架體 # 31之底面與外金屬件15相互貼觸固設,復將檢知磁鐵3 2固 設於架體上,麟檢知磁鐵3 2與轉子i Q表面之N、s極磁鐵呈 同轴、同角度關係’令檢知磁鐵3 2與轉子係呈同步作動關係, 因此’縱然直流無刷馬達轉子包覆驅動時會略微變形之減震橡 夥該檢知磁鐵3 2與轉子之相位角,則會如第二a圖所示般保 持在同—她驗置’錢《知技藝因檢知磁鐵與轉子相位角 不一致’使得N、S極磁鐵換向細發推力她不正確衍生直流無 # 刷馬達效能降低技術課題 再者’本發明透過轉子、架體及檢知磁鐵三者結合為一之創 新心十’更可防止檢知磁鐵偏移至轉子磁鐵分隔線,導致直流無 刷馬達無法正常作動情況發生。 又本發明透過增設-看似不起眼之金屬架體,以連接檢知磁 鐵,、轉子同轴同步作動’卻可有效防止檢知磁鐵與轉子相位角 偏移不-致之直流無刷馬達效能降低或無法正常作用之缺失同 時,架體亦不會增加㈣之成本,令本發明之直流無刷馬達,除 201145767 ==朦之運轉時減震、降低噪音優點,更可令檢知磁鐵與 ,水遠鱗_、同角度之最佳作動位置優點。 值得-提的是’請再配合參照第_所示,係本發明第 施例該實施例與上述最佳實施例結構、空間運用相同,相同社 構元件名稱、符號之沿用之’並不再就結構連賴係贅言,如^ 僅就差異性朗之,其絲3 1 4除完全關隨於外金屬件實But wrapped in the rotor, plus Lai Zhen rubber, her heart in the metal money turned soft so that the 'preparation of the shaft has a torque, and the rotor is used as the magnetic zone segmentation induction speed N, S Under the rhyme, the _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ The phase angle deviation) will cause the money brushless motor to make a mistake, and the magnetic field conversion message associated with the stator also produces errors, and the scale reduction (4) the correct operation of the brushless motor. 3 m 201145767 Furthermore, the DC brushless motor produces a phase difference between the detection phase and the rotor due to the soft rubber damping amount of the material, so that the N s pole magnet commutation and the trigger thrust phase are not correct, and the DC brushless is also caused. The performance of the motor is greatly reduced. For example, the above-mentioned shock-absorbing DC brushless motor overcomes the vibration noise of the motor, and further derives the technical problems of the motor operation error and the low efficiency of the motor shaft and the rotor, and it is urgent to propose an effective solution to the technical solution. SUMMARY OF THE INVENTION The present invention provides a DC brushless motor rotor phase difference canceling structure that can effectively eliminate rotor phase difference. The rotor phase difference elimination structure of the DC brushless motor used for the above purpose, wherein the DC brushless motor is provided with a rotor and a stator, and the first and second ends of the rotor are respectively provided with a bearing 'heart The shaft corresponds to the rotor position and is provided with an inner metal member. The inner metal portion is provided with an outer metal member, and the inner and outer metal members are covered with a shock absorbing rubber. The outer metal member surface is provided with a plurality of stators. Generating an N- and S-pole magnet that drives the 酽φ force; and a phase difference eliminating structure having a frame body and a set of detecting magnets disposed on the frame body. The frame system is penetrated by the second end of the mandrel, The bottom surface is fixed to the position of the outer metal member of the rotor, so that the detecting magnet, the frame body and the rotor are combined to ensure that the magnet is coaxial with the rotor and synchronously actuated, so that the phase of the rotor can be detected: Permanently coaxial, at the same angle 'to ensure that the performance of the DC brushless motor is maintained. [Embodiment] The present invention relates to a rotor phase difference elimination structure of a DC non-slip motor, and (5) 201145767. As shown in the first to third figures, the DC brushless motor includes a rotor 1 〇 and a stator 2 0 : The rotor 10 has a mandrel 1丄 penetrating through the two ends of the rotor, and the first end sleeve of the mandrel 丄1 is provided with a first bearing 12' and the second end is sleeved with a second bearing i3. The second end of the shaft 11 is formed with a groove 丄丄丄 at the second end of the shaft: the mandrel 1 1 is provided with an inner metal piece 14 corresponding to the rotor 1 〇, and the inner metal piece 14 is more economical. For the benefit of the metal pipe, the preferred one is to use the Shixi Steel Applicator. The outer metal piece 14 is provided with an outer metal piece 25, and the outer piece of the metal piece is removed. The inner metal member i 4 and the outer metal member 丄 5 are connected to each other by coating a damping rubber i 6 , and the outer surface of the outer metal member 丄 5 is alternately bonded with a plurality of magnets i 7 . The system is arranged in an N pole and an S pole manner, and a dividing line 18 is formed between each N pole and the s pole magnet; The stator 20 is disposed on the outer circumference of the rotor 1 and can be magnetized with the N and S pole magnets 17 of the outermost layer of the rotor, and drives the rotor in a phase-absorbing and repulsive process with the polarity of the magnet corresponding to the rotor. Actuating; and a phase difference eliminating structure, mainly comprising a frame body 31 and a detecting magnet 3 2, the frame body 3 1 is a class-shaped metal frame as shown in the second and third figures (may also be other The magnetic (electro) metal is replaced by a shaft hole 312 having a hole diameter 312 which is larger than the diameter of the mandrel 11 so that the frame body 3 does not interfere with the operation of the mandrel. The frame body 31 is sleeved in the direction of the second end of the mandrel, and is connected to the metal member i 5 by the bottom surface 314 and the metal piece 15 in contact with the steel plate, and the detecting magnet 3 is fixed. 2, the sleeve is placed on the top end of the different bottom surface of the frame-like frame body 31, so that the detecting magnet 3 2, the frame body 3丨 and the rotor 10 are combined into a body to obtain the effect of synchronous operation. The invention passes through the above-mentioned rotor-end combination-frame body, and the frame body is further provided with a novel for detecting the magnet _, the job _ _ _ _ second money into the step description: due to the detection magnet of the present invention, there are Instead of the conventional shock-absorbing DC brushless motor set on the mandrel, a metal frame body 3 is added to one end of the rotor, and the bottom surface of the frame body #31 and the outer metal piece 15 are fixed to each other. The detecting magnet 3 2 is fixed on the frame body, and the magnet detecting magnet 3 2 is coaxial with the N and s pole magnets on the surface of the rotor i Q and in the same angle relationship, so that the detecting magnet 3 2 and the rotor system are synchronized. Relationship, therefore, even if the DC brushless motor rotor is coated with a slight deformation, the shock absorber rubber will detect the phase angle of the magnet 3 2 and the rotor, and will remain the same as shown in the second figure. Set the 'money' knowledge of the art because of the inconsistency between the magnet and the rotor phase angle', so that the N, S pole magnets reverse the fine hair thrust, she does not correctly derive the DC no. Brush motor performance reduction technical issues, and then the invention through the rotor, frame And the detection of the combination of the three magnets as one of the innovative heart ten's can prevent the detection of magnet bias Moving to the rotor magnet separation line causes the DC brushless motor to malfunction. Moreover, the present invention can effectively prevent the phase difference of the magnet and the rotor from being detected by adding a - seemingly inconspicuous metal frame to connect the detecting magnets, and the rotors are coaxially actuated. The reduction or failure of the normal function at the same time, the frame will not increase the cost of (4), so that the DC brushless motor of the present invention, in addition to the 201145767 == 运转 operation, shock absorption, noise reduction advantages, can also detect the magnet and , water far scale _, the best position of the same position. It is worth mentioning that 'please refer to the reference _, which is the same as the structure and space application of the above-mentioned preferred embodiment. The same social component name and symbol are used in the same way. As far as the structure is concerned, it is a rumor, such as ^ only the difference is true, the wire 3 1 4 is completely closed with the outer metal parts.

施態樣以外’亦得如第四_稍觸目設於外金屬件,亦能 上述實施例相同結構功效。 X 综上所述,本發明“直流無刷馬達之轉子相位差消除結構” 利用成本低廉、不增加直流無刷馬達積體、重量之金屬架體,令 檢知磁鐵與轉子同轴、同角度之消除相位差穎異構思,亦已有效 克服傳統減震直流無刷馬達存在已久之降低馬達效能之相位差技 術課題,更已滿足進步性法條規定。職是,發明人爰依法備具相 關圖式及說明書向鈞局提出發明專利申請,懇請,鈞局貴審查 鲁委員能肯定發明人苦心心血結晶,而早上賜准專利,至感德便。 [s] 7 201145767 【圖式簡單說明】 本發明之轉子結構***圖。 第了圖係本侧之轉子組合圖。 f: if it發明之轉子與檢知磁鐵相位角關係示意圖 第一圖係本發明之轉子剖面示意圖。 第四圖係本發明第二實施例之轉子剖面示意圖。 第五圖係習知轉子之剖面示意圖。 第五A圖係習知轉子與檢知磁鐵相位差示意圖。 17 :磁鐵 18 :分隔線 20 :定孑 3 1 :架踱 3 1 2 : _孔 3 1 4 :底面 32 :檢知磁鐵 3 3 :C形扣 10 :轉孑 【主要元件符號說明】 1 0 :轉子 11 •心 11 1 :溝槽 12 :第一轴承 13 :第二轴承 14 :内金屬件 15 :外金屬件 16 •減震橡膠 習知結構元件符號 10 0 :檢知磁鐵 2 0 〇 :心轴In addition to the appearance of the sample, it is also possible to provide the same structural effect as the above embodiment. X In summary, the "rotor phase difference elimination structure of the DC brushless motor" of the present invention utilizes a metal frame body which is low in cost and does not increase the integrated body and weight of the DC brushless motor, so that the detecting magnet and the rotor are coaxial and at the same angle. Eliminating the phase difference and heterogeneous thinking, it has effectively overcome the long-standing phase difference technology problem of the traditional shock-absorbing DC brushless motor, and has also met the progressive legal provisions. The incumbent is that the inventor has filed a patent application for the invention with the relevant drawings and instructions. If so, the member of the bureau will be sure that the inventor will make painstaking efforts, and the patent will be granted in the morning. [s] 7 201145767 [Simplified description of the drawings] Explosion diagram of the rotor structure of the present invention. The first figure is the rotor combination diagram on the side. f: If it is a schematic diagram of the relationship between the rotor and the detecting magnet phase angle. The first figure is a schematic cross-sectional view of the rotor of the present invention. The fourth figure is a schematic cross-sectional view of a rotor according to a second embodiment of the present invention. The fifth figure is a schematic cross-sectional view of a conventional rotor. Fig. 5A is a schematic diagram showing the phase difference between the conventional rotor and the detecting magnet. 17: Magnet 18: Separation line 20: Fixed 1 3 1 : Frame 1 3 1 2 : _ Hole 3 1 4 : Bottom surface 32 : Detecting magnet 3 3 : C-shaped buckle 10 : Turning 孑 [Main component symbol description] 1 0 : rotor 11 • core 11 1 : groove 12 : first bearing 13 : second bearing 14 : inner metal piece 15 : outer metal piece 16 • damping rubber conventional structural component symbol 10 0 : detecting magnet 2 0 〇: Mandrel

Claims (1)

201145767 七、申請專利範圍: 1、 一種直流無刷馬達之轉子相位差消除結構,該直流無刷 馬達峡有-轉子及—定子,轉子並設有—心轴,該心轴具有 第一端及第二端,該心軸對應轉子之表面則設有一内金屬件,該 内金屬外部則設有—外金屬件,該内、外金屬件_包覆一減震 橡膠’該外金屬件表面則組設有若干個N、s極磁鐵,該磁鐵則相 鄰之定子可產生驅動轉子之磁力;以及一相位差消除結構,主要 φ 包含一架體及一檢知磁鐵,該架體係組設於轉子一端,該架體之 底面並與轉子之外金屬件呈接觸固設關係,該檢知磁鐵則設於架 體’令檢知磁鐵、架體及轉子三者結合為一者。 2、 如請求項1所述直流無刷馬達之轉子相位差消除結構, 該外金屬件為石夕鋼片。 3、 如請求項1或2所述直流無刷馬達之轉子相位差消除結 構’該架體為階級狀之金屬架體’該階級狀架體開設有供心轴貫 ^ 穿之一轴孔。 4、 如請求項3所述直流無刷馬達之轉子相位差消除結構, 該内金屬件為一金屬管。201145767 VII. Patent application scope: 1. A rotor phase difference elimination structure of a DC brushless motor, the DC brushless motor has a rotor and a stator, and the rotor is provided with a mandrel having a first end and The second end, the mandrel is provided with an inner metal member corresponding to the surface of the rotor, and the outer metal portion is provided with an outer metal member, and the inner and outer metal members are coated with a shock absorbing rubber. The group is provided with a plurality of N and s pole magnets, wherein the adjacent stator can generate a magnetic force for driving the rotor; and a phase difference eliminating structure, wherein the main φ comprises a frame body and a detecting magnet, and the frame system is set in At one end of the rotor, the bottom surface of the frame body is in contact with the metal member outside the rotor, and the detecting magnet is disposed on the frame body to combine the detecting magnet, the frame body and the rotor. 2. The rotor phase difference elimination structure of the DC brushless motor according to claim 1, wherein the outer metal member is a Shihua steel sheet. 3. The rotor phase difference canceling structure of the DC brushless motor according to claim 1 or 2, wherein the frame body is a class-shaped metal frame body. The class frame body is provided with a shaft hole for the mandrel. 4. The rotor phase difference eliminating structure of the DC brushless motor according to claim 3, wherein the inner metal member is a metal tube.
TW99117879A 2010-06-03 2010-06-03 Rotor phase difference elimination structure of DC brushless motor TW201145767A (en)

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JP2001238377A (en) * 2000-02-24 2001-08-31 Minebea Co Ltd Rotating electric machine
US6856054B2 (en) * 2001-09-25 2005-02-15 Matsushita Electric Industrial Co., Ltd Brushless DC motor, pump, and electronic apparatus
JP4687871B2 (en) * 2004-11-26 2011-05-25 株式会社富士通ゼネラル Axial gap type electric motor
TWM337925U (en) * 2007-11-09 2008-08-01 Power Circling Co Ltd Shock-reduction motor rotor

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