M358465 八、新型說明： 【新型所屬之技術領域】 本創作係為一種轉子結構，特別是指一種直流無刷 馬達之轉子結構，尤指於轉子之外側環設有至少一組N 極、S極相間之容槽，該等容槽之每一容槽之兩側呈平 狀態，更於軸心與每一 N極磁鐵、S極磁鐵間設置有一 穿孔；該轉子使用於散熱風扇上，亦可運用實施於CDROM | 光碟機、硬碟機、冷氣機、幫浦、家電產品、玩具、汽車配件、 電動工具、醫療保健用品…等。 【先前技術】 一般直流無刷馬達轉子是由永久磁鐵與矽鋼片所 組成，且磁鐵包覆於矽鋼片外緣，必須使磁鐵與矽鋼片 緊密結合後再固設於軸心上，以避免轉子在高速旋轉時 I 造成磁鐵被甩出。 請參考第一圖，係為習知的直流無刷馬達轉子之結 構示意圖。直流無刷馬達的轉子結構10是一體成型，包 括一軸心100、一 N多極磁鐵120及一 S多極磁鐵122， 該等N多極磁鐵120及S多極磁鐵122依序相間未有間 隔，且N多極磁鐵120及S多極磁鐵122之兩側延伸線 均經過直流無刷馬達之轴心。以直流無刷馬達的無段變 速設計，當其轉速之振動頻率與結構體的振動頻率相當 5 M358465 時，兩造所產生的共振情形，將因兩造振動頻率的相加， 以致產生極大㈣音，此正Η音時大時小的要因。 【新型内容】 本創作的主、次要目的在於提出—種直流無刷馬達 之轉子結構，在N極磁鐵及8極磁鐵之間存在一預定間 • 為了達到上述之主要目的’本創作所提出一種直流 無刷馬達之轉子結構，包括一石夕鋼片，其外侧環設有n 極、s極相間相隔之複數組N極容槽、s極容槽；一轴 心’係穿設於該销片之中央處；至少—n極磁鐵，係 設置於該N極容槽内；至少—s極磁鐵，純置於該s 極容槽内。料N極磁鐵及S極磁鐵之間存在有一預定 間隔’該直流無刷馬達於運轉時’轉子磁力產生較方形 φ 之正弦波，較習知具有高效率輸出力矩。 為了達到上述之次要目的，本創作使N極磁鐵及s '極磁鐵均與軸心間各設有—穿孔，無刷馬達運轉時可形 成磁力斷路，透過穿孔的設定，降低直流無刷馬達於運 轉時之噪音。 為方便貴審查委員能進一步瞭解本創作之結構 實用特性，謹配合實施說明圖例配合詳細說明如後。 6 M358465 【實施方式】 請參考第二圖，係為本創作之直流無刷馬達之轉子 結構示意圖。直流無刷馬達之轉子結構包括一石夕鋼片 20、一轴心22、至少一 N極磁鐵24及至少一 S極磁鐵 26。其中，矽鋼片20外側環設有N極、S極依序相間相 隔之數組N極容槽201、S極容槽202，使該相鄰的N 極磁鐵24及S極磁鐵26間存在有一預定間隔；轴心22 _ 是穿設於矽鋼片20之中央處，N極磁鐵24及S極磁鐵 26分別相間地設置於矽鋼片20周圍的N極容槽201、S 極容槽202内。N極磁鐵24、S極磁鐵26可利用黏著劑 分別貼附於矽鋼片20之N極容槽201、S極容槽202内， 使N極磁鐵24及該等S極磁鐵26兩侧均呈平行設置， 其兩側之延伸線並未經過軸心22，使直流無刷馬達於運 轉時，轉子磁力能產生較階梯形之正弦波（業界稱為階梯 > 波），即使轉子磁力產生方波之磁通，遠較習知具有高效 率之輸出力矩。 請參考第三圖，係為本創作之直流無刷馬達之轉子 結構剖面示意圖。由此圖可清楚的得知，N極磁鐵24及 S極磁鐵26之間存在有一預定間隔d，N極磁鐵24及S 極磁鐵26是相鄰近而設置，N極磁鐵24及S極磁鐵26 的型式可為多片矽鋼片組成、單片矽鋼片之一種柱型。 在矽鋼片20的表面設置有至少一穿孔28，穿孔28的位 7 M358465 置是設置於該軸心22與每一 N極磁鐵24及每一 s極磁 鐵26之間。 本創作之改良在於N極磁鐵24及3極磁鐵26之間 存在有預定間隔d，以及在矽鋼片2〇的表面設置有至少 一穿孔28，透過如此的設計可降低噪音振動。 直流無刷馬達於起動後，整個固裝的結構體在受到 馬達轉動的振動後，將會產生相對的共振。以益刷馬達 的無段變速設計’當其轉速之振動頻率與結構體的振動 頻率相當時，兩造所產生的共振情形，將因為兩造振動 頻率的相加，以致會產生極大的噪音，此正是噪音時大 時小的情m ’透過本創作N極磁鐵24及s極磁 鐵26之間存在的預定間隔d，使得直流無刷馬達運轉較 具效率，再者，由第三圖可知，本創作的N極磁鐵24 及s極磁鐵26兩側延伸線並未經過軸心22，且N極磁 鐵24及S極磁鐵26分別與軸心22間存有穿孔28，穿 =28在無刷馬達運轉時可形成磁力斷路的狀態，讓磁通 1集中。如此，經由穿孔28的設計使得轉速的振動不會 ^达到軸心22，而降低造成共振情形，即使直流無刷馬 達運轉時較平順，並能有效降低噪音。 "τ'上所述，本創作直流無刷馬達之轉子結構，使無 :馬達任意轉速轉動時均可安靜輸出，符合實際使用^ 而要’就其任意轉速均不會產生噪音之結構設計，不僅 M358465 為同類設計所首創，更具實用效兴夕· 用政I之提升特性，確已符 合新型專利要件，爰依法提出申請。 【圖式簡單說明】 第-圖係為習知的直流無刷馬達轉子之結構示音圖； 第二圖係為本創作之直流無刷馬達之轉子結構:意圖； 第三圖係為本創作之直流無刷馬達之轉子結構剖面示意M358465 VIII. New description: [New technical field] This creation is a kind of rotor structure, especially the rotor structure of a DC brushless motor, especially the outer ring of the rotor is provided with at least one set of N poles and S poles. The inter-phase tank, the two sides of each of the cavities are flat, and a perforation is provided between the axis and each N-pole magnet and the S-pole magnet; the rotor is used on the cooling fan, Use in CDROM | CD player, hard disk drive, air conditioner, pump, home appliances, toys, auto parts, power tools, health care supplies, etc. [Prior Art] Generally, the DC brushless motor rotor is composed of a permanent magnet and a silicon steel sheet, and the magnet is coated on the outer edge of the silicon steel sheet. The magnet must be tightly combined with the silicon steel sheet and then fixed on the shaft core to avoid the rotor. When the high speed is rotated, I causes the magnet to be thrown out. Please refer to the first figure, which is a schematic diagram of the structure of a conventional DC brushless motor rotor. The rotor structure 10 of the brushless DC motor is integrally formed, and includes an axis 100, an N multipole magnet 120 and an S multipole magnet 122. The N multipole magnets 120 and the S multipole magnets 122 are sequentially non-existent. The spacing and the extension lines on both sides of the N multipole magnet 120 and the S multipole magnet 122 pass through the axis of the DC brushless motor. In the stepless speed change design of the DC brushless motor, when the vibration frequency of the rotating speed is equivalent to the vibration frequency of the structure is 5 M358465, the resonance caused by the two manufacturing will be caused by the sum of the two vibration frequencies, resulting in a great (4) Sound, this is the reason why the sound is small and small. [New content] The main and secondary purpose of this creation is to propose a rotor structure of a DC brushless motor. There is a predetermined space between the N-pole magnet and the 8-pole magnet. • In order to achieve the above main purpose, the author proposes The rotor structure of a DC brushless motor comprises a stone-shaped steel sheet, the outer ring of which is provided with a multi-arranged N-pole pocket with n poles and s poles separated by phases, and a s pole pocket; an axis is threaded through the pin At the center of the film; at least the n-pole magnet is disposed in the N-pole cavity; at least the s-pole magnet is placed in the s-pole cavity. There is a predetermined interval between the N-pole magnet and the S-pole magnet. When the DC brushless motor is in operation, the rotor magnetic force produces a sine wave having a square shape φ, which is known to have a high efficiency output torque. In order to achieve the above secondary purpose, the present invention enables the N-pole magnet and the s'-pole magnet to be provided with a perforation between the shaft and the shaft. When the brushless motor is running, a magnetic circuit can be broken, and the DC brushless motor can be reduced through the setting of the perforation. Noise during operation. In order to facilitate your review committee to further understand the structural and practical characteristics of this creation, please cooperate with the implementation description legend and detailed description as follows. 6 M358465 [Embodiment] Please refer to the second figure, which is a schematic diagram of the rotor structure of the DC brushless motor. The rotor structure of the brushless DC motor includes a stone steel sheet 20, a shaft core 22, at least one N pole magnet 24, and at least one S pole magnet 26. Wherein, the outer ring of the silicon steel sheet 20 is provided with an array of N poles and S poles spaced apart from each other by N poles and S poles, so that there is a predetermined space between the adjacent N pole magnets 24 and the S pole magnets 26 . The axis 22 _ is disposed at the center of the silicon steel sheet 20, and the N pole magnet 24 and the S pole magnet 26 are disposed in the N pole pocket 201 and the S pole pocket 202 around the silicon steel sheet 20, respectively. The N-pole magnet 24 and the S-pole magnet 26 can be attached to the N-pole cavity 201 and the S-pole cavity 202 of the silicon steel sheet 20 by an adhesive, so that the N-pole magnet 24 and the S-pole magnets 26 are both sides. Parallel setting, the extension lines on both sides do not pass through the axis 22, so that when the DC brushless motor is in operation, the rotor magnetic force can generate a stepped sine wave (known as the step > wave), even if the rotor magnetic force is generated. The magnetic flux of the wave is far superior to the output torque with high efficiency. Please refer to the third figure for a schematic diagram of the rotor structure of the DC brushless motor. As can be clearly seen from the figure, there is a predetermined interval d between the N-pole magnet 24 and the S-pole magnet 26, and the N-pole magnet 24 and the S-pole magnet 26 are disposed adjacent to each other, and the N-pole magnet 24 and the S-pole magnet 26 are disposed. The type can be composed of a plurality of pieces of silicon steel sheet and a column type of a single piece of silicon steel sheet. At least one through hole 28 is provided on the surface of the silicon steel sheet 20, and a position 7 M358465 of the through hole 28 is disposed between the axis 22 and each of the N pole magnets 24 and each of the s pole magnets 26. The improvement of the present invention is that a predetermined interval d exists between the N-pole magnet 24 and the 3-pole magnet 26, and at least one through hole 28 is provided on the surface of the silicon steel sheet 2, and the noise vibration can be reduced by such a design. After the DC brushless motor is started, the entire fixed structure will generate relative resonance after being vibrated by the motor. In the stepless speed change design of the brush motor, when the vibration frequency of the rotation speed is equal to the vibration frequency of the structure, the resonance caused by the two constructions will be caused by the addition of the vibration frequencies of the two constructions, so that a great noise is generated. This is the case when the noise is large and small, and the DC-brushless motor operates more efficiently through the predetermined interval d between the N-pole magnet 24 and the s-pole magnet 26. Again, as shown in the third figure. The extension lines on both sides of the N-pole magnet 24 and the s-pole magnet 26 of the present invention do not pass through the axis 22, and the N-pole magnet 24 and the S-pole magnet 26 respectively have a through hole 28 between the axis 22 and the wear-in direction. When the brush motor is in operation, a magnetic disconnection state is formed, and the magnetic flux 1 is concentrated. Thus, the design of the through hole 28 causes the vibration of the rotational speed to not reach the axis 22, and the resonance is reduced, even if the DC brushless motor is smooth, and the noise can be effectively reduced. According to "τ', the rotor structure of the DC brushless motor is created so that it can be quietly output when the motor rotates at any speed, which is in line with the actual use ^ and requires a structural design that does not generate noise at any arbitrary speed. Not only is M358465 the first of its kind, it is more practical and effective. It has been upgraded to meet the requirements of new patents. [Simple diagram of the diagram] The first diagram is the structural sound diagram of the conventional DC brushless motor rotor; the second diagram is the rotor structure of the DC brushless motor of the creation: the intention; the third diagram is the creation Schematic diagram of the rotor structure of the DC brushless motor
【主要元件符號說明】 習知： 10 軸心 100 、 22 120 S多極磁鐵 122 20 N極容槽 201 202 N極磁鐵 24 26 穿孔 28[Main component symbol description] Convention: 10 Axis 100, 22 120 S multipole magnet 122 20 N pole slot 201 202 N pole magnet 24 26 Pierce 28
轉子結構 N多極磁鐵 本創作： 矽鋼片 S極容槽 S極磁鐵 9Rotor structure N multi-pole magnet Original creation: 矽Steel sheet S-pole slot S-pole magnet 9