TWM621354U - Power output mechanism for rear wheel of electric bicycle - Google Patents
Power output mechanism for rear wheel of electric bicycle Download PDFInfo
- Publication number
- TWM621354U TWM621354U TW110206947U TW110206947U TWM621354U TW M621354 U TWM621354 U TW M621354U TW 110206947 U TW110206947 U TW 110206947U TW 110206947 U TW110206947 U TW 110206947U TW M621354 U TWM621354 U TW M621354U
- Authority
- TW
- Taiwan
- Prior art keywords
- planetary gears
- ring gear
- planetary
- casing
- gears
- Prior art date
Links
Images
Landscapes
- Retarders (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
本創作之後輪動力輸出機構適用於電動自行車,其包含有一個外殼、一個馬達及一個減速單元,馬達設於外殼內且具有一個定子與一個轉子,減速單元設於外殼內且具有多個第一行星齒輪及多個第二行星齒輪,該等第二行星齒輪比該等第一行星齒輪更靠近動力輸出的位置,而且,該等第二行星齒輪的數量大於該等第一行星齒輪的數量,如此可以分散該等第二行星齒輪的受力,以降低磨耗及提高耐用性。The rear wheel power output mechanism of this creation is suitable for electric bicycles, which includes a casing, a motor and a reduction unit, the motor is arranged in the outer casing and has a stator and a rotor, and the reduction unit is arranged in the outer casing and has a plurality of first Planetary gears and a plurality of second planetary gears, the second planetary gears are closer to the position of the power output than the first planetary gears, and the number of the second planetary gears is greater than the number of the first planetary gears, In this way, the force of the second planetary gears can be dispersed, so as to reduce wear and improve durability.
Description
本創作與電動自行車有關,特別是指一種用於電動自行車之後輪動力輸出機構。This creation is related to electric bicycles, especially a power output mechanism for rear wheels of electric bicycles.
傳統的電助力自行車是藉由騎乘者的踩踏力量搭配一個動力輸出機構(如輪毂馬達)所提供的助力而獲得前進的動力,使電助力自行車不會對騎乘者的體力造成太大的負擔,並且在休閒之餘又能達到健身的效果。The traditional electric-assisted bicycle obtains the forward power by combining the pedaling force of the rider with the assistance provided by a power output mechanism (such as a hub motor), so that the electric-assisted bicycle will not cause too much physical strength to the rider. Burden, and can achieve the effect of fitness in the leisure time.
日本特許第3939865號專利案所揭露的方案提供二階式行星齒輪組,其中在比較遠離輸出端的行星齒輪組有四個行星齒輪(以下稱為第一階行星齒輪組),在比較靠近輸出端的行星齒輪組有三個行星齒輪(以下稱為第二階行星齒輪組),亦即,第一階行星齒輪組的齒輪數量大於第二階行星齒輪組的齒輪數量,由於比較靠近輸出端的地方需要承受比較高的扭力,所以前述專利文獻的齒輪配置方式容易導致第二階行星齒輪組承受較大的扭力而產生較高的磨耗。The solution disclosed in Japanese Patent No. 3939865 provides a two-stage planetary gear set, wherein the planetary gear set farther from the output end has four planetary gears (hereinafter referred to as the first-order planetary gear set), and the planetary gear set relatively close to the output end has four planetary gears. The gear set has three planetary gears (hereinafter referred to as the second-order planetary gear set), that is, the number of gears in the first-order planetary gear set is greater than the number of gears in the second-order planetary gear set, because it is relatively close to the output end. Therefore, the gear arrangement in the aforementioned patent document is likely to cause the second-stage planetary gear set to bear a relatively large torsional force, resulting in high wear.
本創作之主要目的在於提供一種用於電動自行車之後輪動力輸出機構,其能分散齒輪的受力,以降低磨耗及提高耐用性。The main purpose of this creation is to provide a power output mechanism for the rear wheel of an electric bicycle, which can disperse the force on the gears, so as to reduce wear and improve durability.
為了達成上述主要目的,本創作之後輪動力輸出機構包含有一個外殼、一個馬達、一根第一心軸、一根第二心軸,以及一個減速單元。該外殼具有一個非輸出端與一個輸出端;該馬達設於該外殼內且具有一個定子與一個可相對該定子轉動之轉子;該第一心軸設於該外殼之非輸出端並允許該外殼相對其轉動,且該第一心軸以其一端固接該馬達之定子;該第二心軸設於該外殼之輸出端並允許該外殼能相對其轉動;該減速單元設於該外殼內且具有一根齒軸、一個第一行星支架、一個第二行星支架、一個第一環齒輪、一個第二環齒輪、多個第一行星齒輪及多個第二行星齒輪,其中:該齒軸固設於該馬達之轉子且以同軸方式設於該第一心軸與該第二心軸之間;該第一行星支架固設於該馬達之定子;第二行星支架可轉動地設於該齒軸與該第二心軸之間;該第一環齒輪固設於該第一行星支架;該第二環齒輪固設於該外殼;該等第一行星齒輪樞設於該第二行星支架且嚙接該齒軸與該第一環齒輪,使得該等第一行星齒輪受到該齒軸驅動時會一邊自轉且一邊沿著該第一環齒輪繞著該齒軸公轉,並在公轉過程中帶動該第二行星支架轉動;該等第二行星齒輪樞設於該第一行星支架與該第二心軸之間且嚙接該第二行星支架與該第二環齒輪,使得該等第二行星齒輪受到該第二行星支架驅動時會推動該第二環齒輪,進而使該第二環齒輪帶動該外殼一起轉動,其中,該等第二行星齒輪的數量大於該等第一行星齒輪的數量。In order to achieve the above-mentioned main purpose, the rear wheel power output mechanism of this creation includes a casing, a motor, a first mandrel, a second mandrel, and a deceleration unit. The casing has a non-output end and an output end; the motor is arranged in the casing and has a stator and a rotor rotatable relative to the stator; the first spindle is arranged at the non-output end of the casing and allows the casing It rotates relative to it, and one end of the first mandrel is fixed to the stator of the motor; the second mandrel is set at the output end of the casing and allows the casing to rotate relative to it; the speed reduction unit is set in the casing and It has a pinion, a first planet carrier, a second planet carrier, a first ring gear, a second ring gear, a plurality of first planet gears and a plurality of second planet gears, wherein: the pinion is fixed The rotor is arranged on the rotor of the motor and is arranged between the first spindle and the second spindle in a coaxial manner; the first planetary carrier is fixed on the stator of the motor; the second planetary carrier is rotatably arranged on the tooth between the shaft and the second spindle; the first ring gear is fixed on the first planet carrier; the second ring gear is fixed on the casing; the first planet gears are pivoted on the second planet carrier and Meshing the pinion and the first ring gear, so that when the first planetary gears are driven by the pinion, they will rotate on their own and revolve around the pinion along the first ring gear, and drive the rotation during the revolution. The second planetary carrier rotates; the second planetary gears are pivoted between the first planetary carrier and the second spindle and engage the second planetary carrier and the second ring gear, so that the second planetary gears When the gear is driven by the second planet carrier, it pushes the second ring gear, so that the second ring gear drives the casing to rotate together, wherein the number of the second planet gears is greater than the number of the first planet gears.
由於該等第二行星齒輪比該等第一行星齒輪更靠近該外殼之輸出端,相對來說需要承受比較高的扭力。因此,該等第二行星齒輪在數量方面大於該等第一行星齒輪,如此可以分散該等第二行星齒輪的受力,以達到降低磨耗及提高耐用性的目的。Since the second planetary gears are closer to the output end of the casing than the first planetary gears, they need to bear relatively high torque. Therefore, the number of the second planetary gears is larger than that of the first planetary gears, so that the force of the second planetary gears can be dispersed, so as to achieve the purpose of reducing wear and improving durability.
較佳地,該等第一行星齒輪的數量為三個,該等第二行星齒輪的數量為四個。Preferably, the number of the first planetary gears is three, and the number of the second planetary gears is four.
較佳地,各該第一行星齒輪與各該第二行星齒輪皆以塑膠材質所製成,以達到降噪效果。Preferably, each of the first planetary gears and each of the second planetary gears are made of plastic material to achieve noise reduction.
有關本創作所提供對於後輪動力輸出機構的詳細構造、特點、組裝或使用方式,將於後續的實施方式詳細說明中予以描述。然而,在本創作領域中具有通常知識者應能瞭解,該等詳細說明以及實施本創作所列舉的特定實施例,僅係用於說明本創作,並非用以限制本創作之專利申請範圍。The detailed structure, characteristics, assembly or usage of the rear-wheel power output mechanism provided by the present creation will be described in the detailed description of the following embodiments. However, those with ordinary knowledge in the field of creation should be able to understand that these detailed descriptions and the specific embodiments listed for implementing the creation are only used to illustrate the creation, not to limit the scope of the patent application of the creation.
申請人首先在此說明,於整篇說明書中,包括以下介紹的實施例以及申請專利範圍的請求項中,有關方向性的名詞皆以圖式中的方向為基準。其次,在以下將要介紹之實施例以及圖式中,相同之元件標號,代表相同或近似之元件或其結構特徵。The applicant first explains that in the entire specification, including the embodiments described below and the claims of the scope of the patent application, the terms related to the directionality are based on the directions in the drawings. Next, in the embodiments and drawings to be introduced below, the same element numbers represent the same or similar elements or their structural features.
請參閱圖1至圖4,本創作之後輪動力輸出機構10包含有一個外殼20、一個馬達30、一根第一心軸36、一根第二心軸38,以及一個減速單元50。Referring to FIGS. 1 to 4 , the rear wheel
外殼20包含有一個殼體21與一個端蓋22,端蓋22設於殼體21之右端開口且與殼體21之間形成一個用來容納前述大部分元件的容置空間23。此外,殼體21具有一個非輸出端24(如圖2所示),端蓋22具有一個輸出端25(如圖1所示)。The
馬達30設於外殼20內且具有一個定子32與一個可相對定子32轉動之轉子34。藉由一個供電源(如安裝於車架的電池,圖中未示)所提供的電力,使轉子34轉動而輸出電助力。The
第一心軸36設於外殼20之非輸出端24且允許外殼20能相對其轉動。第一心軸36之一端凸出於外殼20,用以跟後叉(圖中未示)作組設固定,第一心軸36以其另一端連接馬達30之定子32,使第一心軸36保持不動。The
第二心軸38設於外殼20之輸出端25且允許外殼20能相對其轉動。第二心軸38之一端凸出於外殼20,除了用來跟後叉(圖中未示)作組設固定之外,還會套設一個用來跟大齒盤(圖中未示)作組裝之套筒40,第二心軸38之另一端位於外殼20內且具有一個環形端部39。The
減速單元50用來將轉子34所產生的電助力加以減速後再傳遞出去。如圖2至圖4所示,減速單元50設於外殼20內且具有一根齒軸51、一個第一行星支架52、一個第二行星支架53、一個第一環齒輪56、一個第二環齒輪59、多個第一行星齒輪62及多個第二行星齒輪64,其中:The
齒軸51以同軸方式設於第一心軸36與第二心軸38之間且固接於馬達30之轉子34,使齒軸51可受轉子34之驅動而轉動。The
第一行星支架52利用多根螺絲S1鎖固於馬達30之定子32,使第一行星支架52保持不動。The first
第二行星支架53可轉動地設於齒軸51與第二心軸38之間且具有一個環部54與一個連接環部54之齒部55,其中的齒部55以同軸方式對應於齒軸51與第二心軸38。The
第一環齒輪56設於第一行星支架52內,第一環齒輪56之外環面具有多個第一凹槽57,該等第一凹槽57的一部分被多根螺絲S2所嵌卡,另一部分則是利用多根第一銷件58與第一行星支架52固定在一起,使第一環齒輪56保持不動。The
第二環齒輪59之外環面具有多個第二凹槽60,該等第二凹槽60的一部分利用多根第二銷件61與端蓋22固定在一起,使兩者能同步作動。The outer ring surface of the
該等第一行星齒輪62在本實施例中的數量為三個,但不以此為限。該等第一行星齒輪62嚙接在齒軸51與第一環齒輪56之間且分別利用一根第一輪軸63樞設於第二行星支架53之環部54。藉此,當該等第一行星齒輪62受到齒軸51驅動時,由於第一環齒輪56保持不動,所以該等第一行星齒輪62會一邊自轉且一邊沿著第一環齒輪56繞著齒軸51公轉,並在公轉過程中帶動第二行星支架53一起作動。The number of the first
該等第二行星齒輪64在本實施例中的數量為四個,但不以此為限。該等第二行星齒輪64嚙接在第二行星支架53之齒部55與第二環齒輪59之間且分別利用一根第二輪軸65樞設於第一行星支架52與第二心軸38之環形端部39之間。藉此,當該等第二行星齒輪64受到第二行星支架53之齒部55驅動時,由於第一行星支架52保持不動,所以該等第二行星齒輪64會原地自轉,並在自轉過程中推動第二環齒輪59轉動,進而使第二環齒輪59帶動外殼20相對第一心軸36與第二心軸38轉動。In this embodiment, the number of the second
由上述可知,本創作之後輪動力輸出機構10在運作時先由該等第一行星齒輪62進行第一階減速,接著由第二行星支架53將動力輸出至該等第二行星齒輪64,再由該等第二行星齒輪64進行第二階減速,最後再由外殼20之輸出端25將完成二階段減速後的動力輸出。由於該等第二行星齒輪64比該等第一行星齒輪62更靠近外殼20之輸出端25,相對來說需要承受比較高的扭力。因此,本創作將該等第二行星齒輪64的設置數量大於該等第一行星齒輪62的設置數量,如此可以分散該等第二行星齒輪64的受力,以達到降低磨耗及提高耐用性的目的。此外,該等第一行星齒輪62與該等第二行星齒輪64可以(但不限於)用塑膠材質製成,如此可以進一步提供降噪效果。It can be seen from the above that the rear wheel
10:後輪動力輸出機構 20:外殼 21:殼體 22:端蓋 23:容置空間 24:非輸出端 25:輸出端 30:馬達 32:定子 34:轉子 36:第一心軸 38:第二心軸 39:環形端部 40:套筒 50:減速單元 51:齒軸 52:第一行星支架 S1:螺絲 S2:螺絲 53:第二行星支架 54:環部 55:齒部 56:第一環齒輪 57:凹槽 58:第一銷件 59:第二環齒輪 60:第二凹槽 61:第二銷件 62:第一行星齒輪 63:第一輪軸 64:第二行星齒輪 65:第二輪軸10: Rear wheel PTO 20: Shell 21: Shell 22: End cap 23: Accommodating space 24: non-output terminal 25: output terminal 30: Motor 32: Stator 34: Rotor 36: The first mandrel 38: Second mandrel 39: Ring end 40: Sleeve 50: reduction unit 51: Gear shaft 52: The first planet carrier S1: Screw S2: Screw 53: Second planet carrier 54: Ring Department 55: Teeth 56: First Ring Gear 57: Groove 58: The first pin 59: Second Ring Gear 60: Second groove 61: Second pin 62: The first planetary gear 63: First axle 64: Second planetary gear 65: Second axle
圖1為本創作之後輪動力輸出機構的立體圖。 圖2為本創作之後輪動力輸出機構在另一視角的立體圖。 圖3為本創作之後輪動力輸出機構的局部立體分解圖。 圖4為本創作之後輪動力輸出機構的剖視圖。 FIG. 1 is a perspective view of the power output mechanism of the rear wheel after the creation. FIG. 2 is a perspective view of the rear wheel power output mechanism of the creation from another perspective. Figure 3 is a partial perspective exploded view of the wheel power output mechanism after the creation. Figure 4 is a cross-sectional view of the wheel power output mechanism after the creation.
21:殼體 21: Shell
22:端蓋 22: End cap
30:馬達 30: Motor
38:第二心軸 38: Second mandrel
39:環形端部 39: Ring end
40:套筒 40: Sleeve
51:齒軸 51: Gear shaft
52:第一行星支架 52: The first planet carrier
S1:螺絲 S1: Screw
S2:螺絲 S2: Screw
53:第二行星支架 53: Second planet carrier
54:環部 54: Ring Department
55:齒部 55: Teeth
56:第一環齒輪 56: First Ring Gear
57:第一凹槽 57: First groove
58:第一銷件 58: The first pin
59:第二環齒輪 59: Second Ring Gear
60:第二凹槽 60: Second groove
61:第二銷件 61: Second pin
62:第一行星齒輪 62: The first planetary gear
63:第一輪軸 63: First axle
64:第二行星齒輪 64: Second planetary gear
65:第二輪軸 65: Second axle
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW110206947U TWM621354U (en) | 2021-06-16 | 2021-06-16 | Power output mechanism for rear wheel of electric bicycle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW110206947U TWM621354U (en) | 2021-06-16 | 2021-06-16 | Power output mechanism for rear wheel of electric bicycle |
Publications (1)
Publication Number | Publication Date |
---|---|
TWM621354U true TWM621354U (en) | 2021-12-21 |
Family
ID=80680573
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW110206947U TWM621354U (en) | 2021-06-16 | 2021-06-16 | Power output mechanism for rear wheel of electric bicycle |
Country Status (1)
Country | Link |
---|---|
TW (1) | TWM621354U (en) |
-
2021
- 2021-06-16 TW TW110206947U patent/TWM621354U/en unknown
Similar Documents
Publication | Publication Date | Title |
---|---|---|
TWM454375U (en) | Central shaft power output mechanism | |
TWI391263B (en) | Drive system for driving a vehicle wheel | |
JP6815541B2 (en) | Bicycle with electric drive or auxiliary drive | |
TWI807098B (en) | Drive device for a bicycle or pedelec | |
JP5084977B1 (en) | Electric hub device and electric bicycle | |
EP2735501A1 (en) | Centrally-positioned power output mechanism of power-assisted bicycle | |
US20130020854A1 (en) | Traction motor | |
US10604213B2 (en) | Bicycle transmission for use between a chain wheel carrier and a wheel hub of a bicycle, as well as rear axle and rear wheel provided with such a transmission | |
TWM621354U (en) | Power output mechanism for rear wheel of electric bicycle | |
TWI694952B (en) | Harmonic gear transmission mechanism of electric auxiliary power of electric bicycle | |
CN203064151U (en) | Middle-arranged power output mechanism of electric power bicycle | |
CN215098095U (en) | Rear wheel power output mechanism for electric bicycle | |
US20220388597A1 (en) | Front Motor Drive Bicycle With Side Mounted Wheels | |
TWM604848U (en) | Integrated planetary gear reducer | |
TWI786567B (en) | Electric bicycle booster of outer-rotor-type wheel hub motor using one-stage involute planetary gear reduction mechanism with small teeth number differences | |
TWM472137U (en) | Transmission device | |
CN215361726U (en) | Power-assisted driving mechanism for middle-placed motor and middle-placed motor | |
WO2024029381A1 (en) | Electric power assist unit for bicycle, and electric power assisted bicycle | |
TWI773222B (en) | Electric bicycle booster of inner-rotor-type wheel hub motor using one-stage involute planetary gear reduction mechanism with small teeth number differences | |
TWI779427B (en) | Electric bicycle booster using inner-rotor-type wheel hub motor with a two-stage planetary gear reduction mechanism | |
CN213705692U (en) | Rear wheel power output mechanism for electric power-assisted bicycle | |
TWI764556B (en) | Electric bicycle booster of outer-rotor-type wheel hub motor with a two-stage planetary gear reduction mechanism | |
TWI813246B (en) | Power module of electric assisted bicycle | |
WO2018224921A1 (en) | A vehicle | |
TWM484554U (en) | Mid-drive power output mechanism of bicycle |