TWI846167B - Bicycle rear cassette - Google Patents
Bicycle rear cassette Download PDFInfo
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- TWI846167B TWI846167B TW111145144A TW111145144A TWI846167B TW I846167 B TWI846167 B TW I846167B TW 111145144 A TW111145144 A TW 111145144A TW 111145144 A TW111145144 A TW 111145144A TW I846167 B TWI846167 B TW I846167B
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- sprocket
- gasket
- holes
- largest
- assembly holes
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- 125000006850 spacer group Chemical group 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 21
- 230000004323 axial length Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Abstract
Description
本發明係關於一種後飛輪,特別是一種自行車後飛輪。 The present invention relates to a rear flywheel, in particular a bicycle rear flywheel.
近年來自行車的市場蓬勃發展,無論是競賽型的高階自行車,或是作為代步工具及休閒娛樂的大眾型自行車,都受到消費者的喜愛,促使廠商更加重視使用者對於自行車功能的需求,而在車體材料及配備功能上不斷地改善精進。 The bicycle market has been booming in recent years. Whether it is high-end racing bicycles or mass-market bicycles used as a means of transportation and leisure, they are all popular among consumers, prompting manufacturers to pay more attention to users' needs for bicycle functions and continuously improve and enhance the body materials and equipment functions.
在目前自行車的後飛輪中,外徑較大的幾片鏈輪因外徑大的關係,導致鏈條在這幾片鏈輪上移動時容易造成鏈輪晃動等情形。因此,目前本領域的研發人員正致力解決前述的問題。 In the current bicycle rear flywheel, the sprockets with larger outer diameters are prone to sprocket shaking when the chain moves on these sprockets. Therefore, researchers in this field are currently working hard to solve the above-mentioned problem.
本發明在於提供一種自行車後飛輪,能使外徑較大的幾片鏈輪能有足夠的結構強度,以避免鏈條在這幾片鏈輪之其中一者上移動時容易造成該鏈輪晃動等情形。 The present invention provides a bicycle rear flywheel that enables several sprockets with larger outer diameters to have sufficient structural strength to prevent the sprocket from shaking when the chain moves on one of the sprockets.
本發明之一實施例所揭露之一種自行車後飛輪,用以安裝於一自行車輪轂上,包含一最大鏈輪、一第一墊片、一第一鏈輪及多個緊固件。最大鏈輪的齒數大於等於40。第一墊片連接於最大鏈輪,第一墊片具有多個第一通孔。第一墊片位於第一 鏈輪及最大鏈輪之間,第一鏈輪具有多個內花鍵齒及多個第一組裝孔,這些內花鍵齒用以直接安裝於自行車輪轂。這些緊固件分別穿過第一墊片的這些第一通孔及第一鏈輪的這些第一組裝孔,而將最大鏈輪、第一墊片及第一鏈輪彼此緊固。 A bicycle rear flywheel disclosed in an embodiment of the present invention is used to be installed on a bicycle wheel hub, including a maximum sprocket, a first gasket, a first sprocket and a plurality of fasteners. The number of teeth of the maximum sprocket is greater than or equal to 40. The first gasket is connected to the maximum sprocket, and the first gasket has a plurality of first through holes. The first gasket is located between the first sprocket and the maximum sprocket, and the first sprocket has a plurality of internal spline teeth and a plurality of first assembly holes, and these internal spline teeth are used to be directly installed on the bicycle wheel hub. These fasteners pass through these first through holes of the first gasket and these first assembly holes of the first sprocket, respectively, to fasten the maximum sprocket, the first gasket and the first sprocket to each other.
本發明之另一實施例所揭露之一種自行車後飛輪,用以安裝於一自行車輪轂上,包含二鏈輪及多個緊固件。二鏈輪各具有多個組裝孔及用以直接安裝於自行車輪轂的多個內花鍵齒。這些緊固件穿過分別二鏈輪的這些組裝孔,而將二鏈輪彼此緊固。二鏈輪的齒數均大於等於32。 Another embodiment of the present invention discloses a bicycle rear flywheel for installation on a bicycle wheel hub, comprising two sprockets and a plurality of fasteners. The two sprockets each have a plurality of assembly holes and a plurality of internal spline teeth for direct installation on the bicycle wheel hub. These fasteners pass through the assembly holes of the two sprockets respectively to fasten the two sprockets to each other. The number of teeth of the two sprockets is greater than or equal to 32.
根據上述實施例所揭露的自行車後飛輪,藉由第一墊片連接於最大鏈輪且位於第一鏈輪及最大鏈輪之間,及這些緊固件分別穿過第一墊片的這些第一通孔及第一鏈輪的這些第一組裝孔,而將最大鏈輪、第一墊片及第一鏈輪彼此緊固,可使最大鏈輪、第一墊片及第一鏈輪整體有足夠的結構強度,以避免鏈條在最大鏈輪或第一鏈輪上移動時造成該鏈輪晃動的情形。 According to the bicycle rear flywheel disclosed in the above embodiment, the first gasket is connected to the largest sprocket and is located between the first sprocket and the largest sprocket, and the fasteners pass through the first through holes of the first gasket and the first assembly holes of the first sprocket respectively, so that the largest sprocket, the first gasket and the first sprocket are fastened to each other, so that the largest sprocket, the first gasket and the first sprocket as a whole have sufficient structural strength to prevent the sprocket from shaking when the chain moves on the largest sprocket or the first sprocket.
以上關於本發明內容的說明及以下實施方式的說明係用以示範與解釋本發明的原理,並且提供本發明的專利申請範圍更進一步的解釋。 The above description of the content of the present invention and the following description of the implementation method are used to demonstrate and explain the principle of the present invention, and provide a further explanation of the scope of the patent application of the present invention.
1:自行車後飛輪 1: Bicycle rear flywheel
10:最大鏈輪 10: Largest sprocket
11:內環 11: Inner Ring
111:內花鍵齒 111: Internal key teeth
12:連接臂 12: Connecting arm
121:組裝孔 121: Assembly hole
13:外齒環 13: External tooth ring
20:第一墊片 20: First gasket
21:內環 21: Inner Ring
22:連接臂 22: Connecting arm
221:第一通孔 221: First through hole
23:外環 23: Outer Ring
30:次大鏈輪 30: Second large sprocket
31:內環 31: Inner Ring
311:內花鍵齒 311: Internal key teeth
32:連接臂 32: Connecting arm
321:組裝孔 321: Assembly hole
33:外齒環 33: External tooth ring
40:第二墊片 40: Second gasket
41:內環 41: Inner Ring
42:連接臂 42: Connecting arm
421:第二通孔 421: Second through hole
43:外環 43: Outer Ring
50:第一鏈輪 50: First sprocket
51:內環 51: Inner Ring
511:內花鍵齒 511: Internal key teeth
512:螺孔 512: screw hole
52:連接臂 52: Connecting arm
521:第一組裝孔 521: First assembly hole
53:外齒環 53: External tooth ring
60:緊固件 60: Fasteners
61:頭部 61: Head
62:身部 62: Body
621:寬段 621: Wide section
622:窄段 622: Narrow section
623:鉚合段 623: Riveting section
70:第三墊片 70: Third gasket
71:內花鍵齒 71: Internal key teeth
72:第三通孔 72: The third through hole
80:第二鏈輪 80: Second sprocket
81:內環 81: Inner Ring
811:內花鍵齒 811: Internal key teeth
812:第二組裝孔 812: Second assembly hole
82:連接臂 82: Connecting arm
83:外齒環 83: External tooth ring
90:第四墊片 90: Fourth gasket
91:內花鍵齒 91: Internal key teeth
92:第四通孔 92: Fourth through hole
100:第三鏈輪 100: Third sprocket
1001:內環 1001: Inner Ring
10011:內花鍵齒 10011: Internal key teeth
10012:第三組裝孔 10012: The third assembly hole
1002:連接臂 1002: Connecting arm
1003:外齒環 1003: External tooth ring
110:第五墊片 110: Fifth gasket
1101:內花鍵齒 1101: Internal key teeth
1102:第五通孔 1102: Fifth through hole
120:第四鏈輪 120: Fourth sprocket
1201:內環 1201: Inner Ring
12011:內花鍵齒 12011: Internal key teeth
12012:第四組裝孔 12012: Fourth assembly hole
1202:連接臂 1202: Connecting arm
1203:外齒環 1203: External tooth ring
130:螺柱 130: Stud
140:第六墊片 140: Sixth gasket
1401:內花鍵齒 1401: Internal key teeth
150:第五鏈輪 150: Fifth sprocket
1501:內花鍵齒 1501: Internal key teeth
160:第六鏈輪 160: Sixth sprocket
1601:內花鍵齒 1601: Internal key teeth
170:第七鏈輪 170: Seventh Chain
1701:內花鍵齒 1701: Internal key teeth
W1,W2,W3,W4:寬度 W1,W2,W3,W4:Width
C:中心 C: Center
A:軸線 A: Axis
T:距離 T:Distance
1a:自行車後飛輪 1a: Bicycle rear flywheel
10a:最大鏈輪 10a: Largest sprocket
11a:內環 11a: Inner Ring
111a:內花鍵齒 111a: Internal key teeth
12a:連接臂 12a: Connecting arm
121a:組裝孔 121a: Assembly hole
13a:外齒環 13a: External tooth ring
20a:第一墊片 20a: First gasket
21a:內環 21a: Inner Ring
211a:內花鍵齒 211a: Internal key teeth
22a:連接臂 22a: Connecting arm
221a:第一通孔 221a: first through hole
23a:外環 23a: Outer Ring
30a:次大鏈輪 30a: Second large sprocket
31a:內環 31a: Inner Ring
311a:內花鍵齒 311a: Internal spline teeth
32a:連接臂 32a: Connecting arm
321a:組裝孔 321a: Assembly hole
33a:外齒環 33a: External tooth ring
40a:第二墊片 40a: Second gasket
41a:內環 41a: Inner Ring
411a:內花鍵齒 411a: Internal spline teeth
42a:連接臂 42a: Connecting arm
421a:第二通孔 421a: Second through hole
43a:外環 43a: Outer Ring
50a:第一鏈輪 50a: First sprocket
51a:內環 51a: Inner Ring
511a:內花鍵齒 511a: Internal spline teeth
52a:連接臂 52a: Connecting arm
521a:第一組裝孔 521a: First assembly hole
53a:外齒環 53a: External tooth ring
60a:第三墊片 60a: Third gasket
61a:內環 61a: Inner Ring
62a:連接臂 62a: Connecting arm
621a:第三通孔 621a: third through hole
70a:第二鏈輪 70a: Second sprocket
71a:內環 71a: Inner Ring
711a:內花鍵齒 711a: Internal spline teeth
712a:螺孔 712a: screw hole
72a:連接臂 72a: Connecting arm
721a:第二組裝孔 721a: Second assembly hole
73a:外齒環 73a: External tooth ring
80a:緊固件 80a: Fasteners
81a:頭部 81a:Head
82a:身部 82a: Body
821a:寬段 821a: Wide section
822a:窄段 822a: Narrow section
823a:鉚合段 823a: Riveting section
90a:第四墊片 90a: Fourth gasket
91a:內花鍵齒 91a: Internal key teeth
92a:第四通孔 92a: Fourth through hole
100a:第三鏈輪 100a: Third sprocket
1001a:內環 1001a: Inner Ring
10011a:內花鍵齒 10011a: Internal key teeth
10012a:第三組裝孔 10012a: The third assembly hole
1002a:連接臂 1002a: Connecting arm
1003a:外齒環 1003a: External tooth ring
110a:第五墊片 110a: Fifth gasket
1101a:內花鍵齒 1101a: Internal spline teeth
1102a:第五通孔 1102a: fifth through hole
120a:第四鏈輪 120a: Fourth sprocket
1201a:內環 1201a: Inner Ring
12011a:內花鍵齒 12011a: Internal key teeth
12012a:第四組裝孔 12012a: Fourth assembly hole
1202a:連接臂 1202a: Connecting arm
1203a:外齒環 1203a: External tooth ring
130a:第六墊片 130a: Sixth gasket
1301a:內花鍵齒 1301a: Internal key teeth
1302a:第六通孔 1302a: Sixth through hole
140a:第五鏈輪 140a: Fifth sprocket
1401a:內環 1401a: Inner Ring
14011a:內花鍵齒 14011a: Internal key teeth
14012a:第五組裝孔 14012a: Fifth assembly hole
1402a:連接臂 1402a: Connecting arm
1403a:外齒環 1403a: External tooth ring
150a:第七墊片 150a: Seventh gasket
1501a:內花鍵齒 1501a: Internal spline teeth
1502a:第七通孔 1502a: Seventh through hole
160a:第六鏈輪 160a: Sixth sprocket
1601a:內花鍵齒 1601a: Internal spline teeth
1602a:第六組裝孔 1602a: Sixth assembly hole
170a:螺柱 170a: Stud
180a:第七鏈輪 180a: Seventh sprocket
1801a:內花鍵齒 1801a: Internal key teeth
190a:第八鏈輪 190a: The eighth sprocket
1901a:內花鍵齒 1901a: Internal key teeth
W5,W6,W7,W8:寬度 W5,W6,W7,W8:Width
1b:自行車後飛輪 1b: Bicycle rear flywheel
10b:最大鏈輪 10b: Largest sprocket
11b:外齒環 11b: Outer tooth ring
12b:連接臂 12b: Connecting arm
121b:組裝孔 121b: Assembly hole
20b:第一墊片 20b: First gasket
21b:內環 21b: Inner ring
211b:內花鍵齒 211b: Internal key teeth
22b:連接臂 22b: Connecting arm
221b:第一通孔 221b: first through hole
23b:外環 23b: Outer Ring
231b:組裝孔 231b: Assembly hole
30b:次大鏈輪 30b: Second large sprocket
31b:外齒環 31b: External tooth ring
32b:連接臂 32b: Connecting arm
321b:組裝孔 321b: Assembly hole
40b:第二墊片 40b: Second gasket
41b:內環 41b: Inner ring
411b:內花鍵齒 411b: Internal spline teeth
42b:連接臂 42b: Connecting arm
421b:第二通孔 421b: Second through hole
43b:外環 43b: Outer Ring
50b:第一鏈輪 50b: First sprocket
51b:內環 51b: Inner ring
511b:內花鍵齒 511b: Internal key teeth
52b:連接臂 52b: Connecting arm
521b:第一組裝孔 521b: First assembly hole
53b:外齒環 53b: External tooth ring
60b:第三墊片 60b: Third gasket
61b:內環 61b: Inner ring
62b:連接臂 62b: Connecting arm
621b:第三通孔 621b: third through hole
70b:第二鏈輪 70b: Second sprocket
71b:內環 71b: Inner ring
711b:內花鍵齒 711b: Internal spline teeth
712b:螺孔 712b: screw hole
72b:連接臂 72b: Connecting arm
721b:第二組裝孔 721b: Second assembly hole
73b:外齒環 73b: External tooth ring
80b:緊固件 80b: Fasteners
81b:頭部 81b: Head
82b:身部 82b: Body
821b:寬段 821b: Wide section
822b:窄段 822b: Narrow segment
823b:鉚合段 823b: Riveting section
90b:第四墊片 90b: Fourth gasket
91b:內花鍵齒 91b: Internal key teeth
92b:第四通孔 92b: Fourth through hole
100b:第三鏈輪 100b: Third sprocket
1001b:內環 1001b: Inner Ring
10011b:內花鍵齒 10011b: Internal key teeth
10012b:第三組裝孔 10012b: The third assembly hole
1002b:連接臂 1002b: Connecting arm
1003b:外齒環 1003b: External tooth ring
110b:第五墊片 110b: Fifth gasket
1101b:內花鍵齒 1101b: Internal spline teeth
1102b:第五通孔 1102b: fifth through hole
120b:第四鏈輪 120b: Fourth sprocket
1201b:內環 1201b: Inner ring
12011b:內花鍵齒 12011b: Internal key teeth
12012b:第四組裝孔 12012b: Fourth assembly hole
1202b:連接臂 1202b: Connecting arm
1203b:外齒環 1203b: External tooth ring
130b:第六墊片 130b: Sixth gasket
1301b:內花鍵齒 1301b: Internal key teeth
1302b:第六通孔 1302b: Sixth through hole
140b:第五鏈輪 140b: Fifth sprocket
1401b:內環 1401b: Inner ring
14011b:內花鍵齒 14011b: Internal key teeth
14012b:第五組裝孔 14012b: Fifth assembly hole
1402b:連接臂 1402b: Connecting arm
1403b:外齒環 1403b: External tooth ring
150b:第七墊片 150b: Seventh gasket
1501b:內花鍵齒 1501b: Internal key teeth
1502b:第七通孔 1502b: Seventh through hole
160b:第六鏈輪 160b: Sixth sprocket
1601b:內環 1601b: Inner ring
16011b:內花鍵齒 16011b: Internal spline teeth
16012b:第六組裝孔 16012b: Sixth assembly hole
1602b:連接臂 1602b: Connecting arm
1603b:外齒環 1603b: External tooth ring
170b:第八墊片 170b: Eighth gasket
1701b:內花鍵齒 1701b: Internal key teeth
1702b:第八通孔 1702b: The eighth through hole
180b:第七鏈輪 180b: Seventh sprocket
1801b:內花鍵齒 1801b: Internal key teeth
1802b:第七組裝孔 1802b: Seventh assembly hole
190b:螺柱 190b: Stud
200b:第八鏈輪 200b: Eighth sprocket
2001b:內花鍵齒 2001b: Internal key teeth
210b:第九鏈輪 210b: Ninth sprocket
2101b:內花鍵齒 2101b: Internal key teeth
F:鉚釘 F: Rivet
W9,W10,W11,W12:寬度 W9,W10,W11,W12: Width
圖1為根據本發明之第一實施例所揭露之自行車後飛輪的立體示意圖。 Figure 1 is a three-dimensional schematic diagram of the rear flywheel of a bicycle disclosed according to the first embodiment of the present invention.
圖2為圖1的部分分解示意圖。 Figure 2 is a partially exploded schematic diagram of Figure 1.
圖3為圖1的另一部分分解示意圖。 Figure 3 is another partial decomposition diagram of Figure 1.
圖4為圖1的部分剖視示意圖。 Figure 4 is a partial cross-sectional schematic diagram of Figure 1.
圖5為根據本發明之第二實施例所揭露之自行車後飛輪的立體示意圖。 Figure 5 is a three-dimensional schematic diagram of the rear flywheel of a bicycle disclosed according to the second embodiment of the present invention.
圖6為圖5的部分分解示意圖。 Figure 6 is a partially exploded schematic diagram of Figure 5.
圖7為圖5的另一部分分解示意圖。 Figure 7 is another partial exploded schematic diagram of Figure 5.
圖8為圖5的部分剖視示意圖。 Figure 8 is a partial cross-sectional schematic diagram of Figure 5.
圖9為根據本發明之第三實施例所揭露之自行車後飛輪的立體示意圖。 Figure 9 is a three-dimensional schematic diagram of the rear flywheel of a bicycle disclosed in the third embodiment of the present invention.
圖10為圖9的部分分解示意圖。 Figure 10 is a partially exploded schematic diagram of Figure 9.
圖11為圖9的另一部分分解示意圖。 Figure 11 is another partial exploded schematic diagram of Figure 9.
圖12為圖9的部分剖視示意圖。 Figure 12 is a partial cross-sectional schematic diagram of Figure 9.
請參閱圖1至圖3。圖1為根據本發明之第一實施例所揭露之自行車後飛輪的立體示意圖。圖2為圖1的部分分解示意圖。圖3為圖1的另一部分分解示意圖。 Please refer to Figures 1 to 3. Figure 1 is a three-dimensional schematic diagram of the rear flywheel of a bicycle disclosed according to the first embodiment of the present invention. Figure 2 is a partially exploded schematic diagram of Figure 1. Figure 3 is another partially exploded schematic diagram of Figure 1.
在本實施例中,自行車後飛輪1用以安裝於一自行車輪轂(未繪示)上。自行車後飛輪1包含一最大鏈輪10、一第一墊片20、一第一鏈輪50及多個緊固件60。此外,自行車後飛輪1還可包含一次大鏈輪30、一第二墊片40、一第三墊片70、一第二鏈輪80、一第四墊片90、一第三鏈輪100、一第五墊片110、一第四鏈輪120、一第六墊片140、一第五鏈輪150、一第六鏈輪 160及一第七鏈輪170。 In this embodiment, the bicycle rear flywheel 1 is used to be mounted on a bicycle wheel hub (not shown). The bicycle rear flywheel 1 includes a largest sprocket 10, a first gasket 20, a first sprocket 50 and a plurality of fasteners 60. In addition, the bicycle rear flywheel 1 may also include a primary large sprocket 30, a second gasket 40, a third gasket 70, a second sprocket 80, a fourth gasket 90, a third sprocket 100, a fifth gasket 110, a fourth sprocket 120, a sixth gasket 140, a fifth sprocket 150, a sixth sprocket 160 and a seventh sprocket 170.
接著,請一併參閱圖2至圖4,圖4為圖1的部分剖視示意圖。 Next, please refer to Figures 2 to 4 together. Figure 4 is a partial cross-sectional view of Figure 1.
在本實施例中,最大鏈輪10、次大鏈輪30、第一鏈輪50、第二鏈輪80、第三鏈輪100、第四鏈輪120、第五鏈輪150、第六鏈輪160及第七鏈輪170外徑由大至小依序地併排排列。第一墊片20位於最大鏈輪10與次大鏈輪30之間。第二墊片40位於次大鏈輪30與第一鏈輪50之間。第三墊片70位於第一鏈輪50與第二鏈輪80之間。第四墊片90位於第二鏈輪80與第三鏈輪100之間。第五墊片110位於第三鏈輪100與第四鏈輪120之間。第六墊片140位於第四鏈輪120與第五鏈輪150之間。以下將介紹各個鏈輪及墊片的細部結構。 In this embodiment, the largest sprocket 10, the second largest sprocket 30, the first sprocket 50, the second sprocket 80, the third sprocket 100, the fourth sprocket 120, the fifth sprocket 150, the sixth sprocket 160 and the seventh sprocket 170 are arranged in order from large to small in outer diameter. The first gasket 20 is located between the largest sprocket 10 and the second largest sprocket 30. The second gasket 40 is located between the second largest sprocket 30 and the first sprocket 50. The third gasket 70 is located between the first sprocket 50 and the second sprocket 80. The fourth gasket 90 is located between the second sprocket 80 and the third sprocket 100. The fifth gasket 110 is located between the third sprocket 100 and the fourth sprocket 120. The sixth gasket 140 is located between the fourth sprocket 120 and the fifth sprocket 150. The detailed structure of each sprocket and gasket will be introduced below.
最大鏈輪10包含一內環11、多個連接臂12及一外齒環13。內環11透過這些連接臂12連接於外齒環13。內環11具有多個內花鍵齒111,這些內花鍵齒111用以直接安裝於自行車輪轂的多個齒槽。各連接臂12具有一組裝孔121。外齒環13上的齒數例如為46齒。 The largest sprocket 10 includes an inner ring 11, a plurality of connecting arms 12 and an outer gear ring 13. The inner ring 11 is connected to the outer gear ring 13 through the connecting arms 12. The inner ring 11 has a plurality of inner spline teeth 111, which are used to be directly mounted on a plurality of tooth grooves of a bicycle wheel hub. Each connecting arm 12 has an assembly hole 121. The number of teeth on the outer gear ring 13 is, for example, 46 teeth.
第一墊片20包含一內環21、多個連接臂22及一外環23,內環21透過這些連接臂22連接於外環23。各連接臂22各具有一第一通孔221。 The first gasket 20 includes an inner ring 21, a plurality of connecting arms 22 and an outer ring 23. The inner ring 21 is connected to the outer ring 23 through the connecting arms 22. Each connecting arm 22 has a first through hole 221.
次大鏈輪30包含一內環31、多個連接臂32及一外齒環33。內環31透過這些連接臂32連接於外齒環33。內環31 具有多個內花鍵齒311,這些內花鍵齒311用以直接安裝於自行車輪轂的多個齒槽。各連接臂32具有一組裝孔321。外齒環33上的齒數例如為40齒。 The secondary large chain wheel 30 includes an inner ring 31, a plurality of connecting arms 32 and an outer gear ring 33. The inner ring 31 is connected to the outer gear ring 33 through the connecting arms 32. The inner ring 31 has a plurality of inner spline teeth 311, which are used to be directly mounted on a plurality of tooth grooves of the bicycle wheel hub. Each connecting arm 32 has an assembly hole 321. The number of teeth on the outer gear ring 33 is, for example, 40 teeth.
第二墊片40包含一內環41、多個連接臂42及一外環43,內環41透過這些連接臂42連接於外環43。各連接臂42各具有一第二通孔421。 The second gasket 40 includes an inner ring 41, a plurality of connecting arms 42 and an outer ring 43. The inner ring 41 is connected to the outer ring 43 through the connecting arms 42. Each connecting arm 42 has a second through hole 421.
第一鏈輪50包含一內環51、多個連接臂52及一外齒環53。內環51透過這些連接臂52連接於外齒環53。內環51具有多個內花鍵齒511及多個螺孔512。這些內花鍵齒511用以直接安裝於自行車輪轂的多個齒槽。各連接臂52具有一第一組裝孔521。外齒環53上的齒數例如為34齒。 The first sprocket 50 includes an inner ring 51, a plurality of connecting arms 52 and an outer gear ring 53. The inner ring 51 is connected to the outer gear ring 53 through the connecting arms 52. The inner ring 51 has a plurality of inner spline teeth 511 and a plurality of screw holes 512. The inner spline teeth 511 are used to be directly mounted on a plurality of tooth grooves of a bicycle wheel hub. Each connecting arm 52 has a first assembly hole 521. The number of teeth on the outer gear ring 53 is, for example, 34 teeth.
這些緊固件60例如為鉚釘。這些緊固件60分別穿過最大鏈輪10的這些組裝孔121、第一墊片20的這些第一通孔221、次大鏈輪30的這些組裝孔321、第二墊片40的這些第二通孔421及第一鏈輪50的這些第一組裝孔521,而將最大鏈輪10、第一墊片20、次大鏈輪30、第二墊片40及第一鏈輪50彼此緊固。 These fasteners 60 are, for example, rivets. These fasteners 60 respectively pass through the assembly holes 121 of the largest sprocket 10, the first through holes 221 of the first gasket 20, the assembly holes 321 of the second largest sprocket 30, the second through holes 421 of the second gasket 40, and the first assembly holes 521 of the first sprocket 50, thereby fastening the largest sprocket 10, the first gasket 20, the second largest sprocket 30, the second gasket 40, and the first sprocket 50 to each other.
詳細來說,這些緊固件60的結構相同,以下僅詳細介紹其中一者。緊固件60包含一頭部61及一身部62,而身部62包含一寬段621、一窄段622及一鉚合段623。寬段621位於頭部61及窄段622之間且連接於頭部61及窄段622,而鉚合段623位於窄段622遠離寬段621的一側。頭部61的寬度W1大於寬段 621的寬度W2,寬段621的寬度W2大於窄段622的寬度W3,鉚合段623的寬度W4大於窄段622的寬度W3。這些緊固件60的頭部61抵靠於最大鏈輪10,這些緊固件60的身部62的寬段621分別穿過最大鏈輪10的這些組裝孔121、第一墊片20的這些第一通孔221、次大鏈輪30的這些組裝孔321及第二墊片40的這些第二通孔421。這些緊固件60的身部62的寬段621抵靠於第一鏈輪50,且這些緊固件60的窄段622分別穿過第一鏈輪50的這些第一組裝孔521。最大鏈輪10、第一墊片20、次大鏈輪30、第二墊片40及第一鏈輪50被夾持於這些緊固件60的頭部61及身部62的鉚合段623之間,而使得最大鏈輪10、第一墊片20、次大鏈輪30、第二墊片40及第一鏈輪50彼此緊固,故最大鏈輪10、第一墊片20、次大鏈輪30、第二墊片40及第一鏈輪50整體有足夠的結構強度,以避免鏈條在最大鏈輪10、次大鏈輪30或第一鏈輪50上移動時造成該鏈輪晃動的情形。 In detail, the structures of these fasteners 60 are the same, and only one of them is described in detail below. The fastener 60 includes a head 61 and a body 62, and the body 62 includes a wide section 621, a narrow section 622 and a riveting section 623. The wide section 621 is located between the head 61 and the narrow section 622 and connected to the head 61 and the narrow section 622, and the riveting section 623 is located on one side of the narrow section 622 away from the wide section 621. The width W1 of the head 61 is greater than the width W2 of the wide section 621, the width W2 of the wide section 621 is greater than the width W3 of the narrow section 622, and the width W4 of the rivet section 623 is greater than the width W3 of the narrow section 622. The heads 61 of the fasteners 60 abut against the largest sprocket 10, and the wide sections 621 of the body 62 of the fasteners 60 pass through the assembly holes 121 of the largest sprocket 10, the first through holes 221 of the first gasket 20, the assembly holes 321 of the second largest sprocket 30, and the second through holes 421 of the second gasket 40, respectively. The wide sections 621 of the body 62 of these fasteners 60 abut against the first sprocket 50, and the narrow sections 622 of these fasteners 60 pass through the first assembly holes 521 of the first sprocket 50 respectively. The largest sprocket 10, the first gasket 20, the second large sprocket 30, the second gasket 40 and the first sprocket 50 are clamped between the head 61 and the riveting section 623 of the body 62 of these fasteners 60, so that the largest sprocket 10, the first gasket 20, the second large sprocket 30, the second gasket 40 and the first sprocket 50 are fastened to each other, so the largest sprocket 10, the first gasket 20, the second large sprocket 30, the second gasket 40 and the first sprocket 50 have sufficient structural strength as a whole to prevent the sprocket from shaking when the chain moves on the largest sprocket 10, the second large sprocket 30 or the first sprocket 50.
在本實施例中,這些緊固件60的中心C至自行車後飛輪1的轉動軸線A的距離T例如至少為45.75mm。藉此,可讓這些緊固件60將最大鏈輪10、第一墊片20、次大鏈輪30、第二墊片40及第一鏈輪50彼此緊固的位置足夠遠離自行車後飛輪1的轉動軸線A,而使最大鏈輪10、第一墊片20、次大鏈輪30、第二墊片40及第一鏈輪50整體的結構強度能進一步地增強。應注意的是,這些緊固件60的中心C至自行車後飛輪1的轉動軸線A的距離T可依據需求任意進行調整。 In this embodiment, the distance T from the center C of these fasteners 60 to the rotation axis A of the rear flywheel 1 of the bicycle is, for example, at least 45.75 mm. In this way, the positions where the largest sprocket 10, the first gasket 20, the second large sprocket 30, the second gasket 40 and the first sprocket 50 are fastened to each other by these fasteners 60 are far enough away from the rotation axis A of the rear flywheel 1 of the bicycle, so that the overall structural strength of the largest sprocket 10, the first gasket 20, the second large sprocket 30, the second gasket 40 and the first sprocket 50 can be further enhanced. It should be noted that the distance T from the center C of these fasteners 60 to the rotation axis A of the rear flywheel 1 of the bicycle can be adjusted arbitrarily according to needs.
在本實施例中,藉由這些緊固件60的頭部61抵靠最大鏈輪10,且這些緊固件60的身部62的寬段621穿過最大鏈輪10、第一墊片20、次大鏈輪30及第二墊片40並抵靠於第一鏈輪50的配置,可利用緊固件60之寬段621的軸向長度限制最大鏈輪10及第一鏈輪50之間的軸向距離,再加上最大鏈輪10、次大鏈輪30及第一鏈輪50中相鄰的二者之間有墊片的設置,可使最大鏈輪10、次大鏈輪30及第一鏈輪50彼此之間的軸向距離固定,而確保最大鏈輪10、次大鏈輪30及第一鏈輪50的平整度。 In this embodiment, the head 61 of the fasteners 60 abuts against the largest sprocket 10, and the wide section 621 of the body 62 of the fasteners 60 passes through the largest sprocket 10, the first gasket 20, the second largest sprocket 30 and the second gasket 40 and abuts against the first sprocket 50. The axial length of the wide section 621 of the fastener 60 can be used to limit the maximum sprocket 10 and the first sprocket 50, and the spacer is set between the adjacent two of the largest sprocket 10, the second largest sprocket 30 and the first sprocket 50, so that the axial distance between the largest sprocket 10, the second largest sprocket 30 and the first sprocket 50 can be fixed, thereby ensuring the flatness of the largest sprocket 10, the second largest sprocket 30 and the first sprocket 50.
應注意的是,緊固件60的身部62並不限於包含寬段621及窄段622。在其他實施例中,緊固件之身部除了鉚合段之外可為均勻寬度的柱體。 It should be noted that the body 62 of the fastener 60 is not limited to including the wide section 621 and the narrow section 622. In other embodiments, the body of the fastener may be a column of uniform width except for the riveting section.
第三墊片70具有多個內花鍵齒71及多個第三通孔72。第三墊片70的這些內花鍵齒71用以直接安裝於自行車輪轂的多個齒槽,而這些第三通孔72分別對應於第一鏈輪50的這些螺孔512。 The third gasket 70 has a plurality of internal spline teeth 71 and a plurality of third through holes 72. The internal spline teeth 71 of the third gasket 70 are used to be directly mounted on a plurality of tooth grooves of the bicycle wheel hub, and the third through holes 72 correspond to the screw holes 512 of the first sprocket 50 respectively.
第二鏈輪80包含一內環81、多個連接臂82及一外齒環83。內環81透過這些連接臂82連接於外齒環83。內環81具有多個內花鍵齒811及多個第二組裝孔812。這些內花鍵齒811用以直接安裝於自行車輪轂的多個齒槽,而這些第二組裝孔812分別對應於第三墊片70的這些第三通孔72。外齒環83上的齒數例如為28齒。 The second sprocket 80 includes an inner ring 81, a plurality of connecting arms 82 and an outer gear ring 83. The inner ring 81 is connected to the outer gear ring 83 through the connecting arms 82. The inner ring 81 has a plurality of inner spline teeth 811 and a plurality of second assembly holes 812. The inner spline teeth 811 are used to be directly mounted on a plurality of tooth grooves of the bicycle wheel hub, and the second assembly holes 812 correspond to the third through holes 72 of the third gasket 70. The number of teeth on the outer gear ring 83 is, for example, 28 teeth.
第四墊片90具有多個內花鍵齒91及多個第四通孔 92。第四墊片90的這些內花鍵齒91用以直接安裝於自行車輪轂的多個齒槽,而這些第四通孔92分別對應於第二鏈輪80之內環81的這些第二組裝孔812。 The fourth gasket 90 has a plurality of internal spline teeth 91 and a plurality of fourth through holes 92. The internal spline teeth 91 of the fourth gasket 90 are used to be directly mounted on a plurality of tooth grooves of the bicycle wheel hub, and the fourth through holes 92 correspond to the second assembly holes 812 of the inner ring 81 of the second sprocket 80, respectively.
第三鏈輪100包含一內環1001、多個連接臂1002及一外齒環1003。內環1001透過這些連接臂1002連接於外齒環1003。內環1001具有多個內花鍵齒10011及多個第三組裝孔10012。這些內花鍵齒10011用以直接安裝於自行車輪轂的多個齒槽,而這些第三組裝孔10012分別對應於第四墊片90的這些第四通孔92。外齒環1003上的齒數例如為24齒。 The third sprocket 100 includes an inner ring 1001, a plurality of connecting arms 1002 and an outer gear ring 1003. The inner ring 1001 is connected to the outer gear ring 1003 through the connecting arms 1002. The inner ring 1001 has a plurality of inner spline teeth 10011 and a plurality of third assembly holes 10012. The inner spline teeth 10011 are used to be directly mounted on a plurality of tooth grooves of a bicycle wheel hub, and the third assembly holes 10012 correspond to the fourth through holes 92 of the fourth gasket 90 respectively. The number of teeth on the outer gear ring 1003 is, for example, 24 teeth.
第五墊片110具有多個內花鍵齒1101及多個第五通孔1102。第五墊片110的這些內花鍵齒1101用以直接安裝於自行車輪轂的多個齒槽,而這些第五通孔1102分別對應於第三鏈輪100之內環1001的這些第三組裝孔10012。 The fifth gasket 110 has a plurality of internal spline teeth 1101 and a plurality of fifth through holes 1102. The internal spline teeth 1101 of the fifth gasket 110 are used to be directly mounted on a plurality of tooth grooves of a bicycle wheel hub, and the fifth through holes 1102 correspond to the third assembly holes 10012 of the inner ring 1001 of the third sprocket 100, respectively.
第四鏈輪120包含一內環1201、多個連接臂1202及一外齒環1203。內環1201透過這些連接臂1202連接於外齒環1203。內環1201具有多個內花鍵齒12011及多個第四組裝孔12012。這些內花鍵齒12011用以直接安裝於自行車輪轂的多個齒槽,而這些第四組裝孔12012分別對應於第五墊片110的這些第五通孔1102。外齒環1203上的齒數例如為20齒。 The fourth sprocket 120 includes an inner ring 1201, a plurality of connecting arms 1202 and an outer gear ring 1203. The inner ring 1201 is connected to the outer gear ring 1203 through the connecting arms 1202. The inner ring 1201 has a plurality of inner spline teeth 12011 and a plurality of fourth assembly holes 12012. The inner spline teeth 12011 are used to be directly mounted on a plurality of tooth grooves of a bicycle wheel hub, and the fourth assembly holes 12012 correspond to the fifth through holes 1102 of the fifth gasket 110, respectively. The number of teeth on the outer gear ring 1203 is, for example, 20 teeth.
在本實施例中,自行車後飛輪1還可包含多個螺柱130。這些螺柱130分別穿過第四鏈輪120之內環1201的這些第四組裝孔12012、第五墊片110的這些第五通孔1102、第三鏈輪 100之內環1001的這些第三組裝孔10012、第四墊片90的這些第四通孔92、第二鏈輪80之內環81的這些第二組裝孔812及第三墊片70的這些第三通孔72,並螺合於第一鏈輪50這些螺孔512,以使第三墊片70、第二鏈輪80、第四墊片90、第三鏈輪100、第五墊片110及第四鏈輪120緊固於這些螺柱130的頭部與第一鏈輪50之間。 In this embodiment, the bicycle rear flywheel 1 may further include a plurality of studs 130 . The studs 130 respectively pass through the fourth assembly holes 12012 of the inner ring 1201 of the fourth sprocket 120, the fifth through holes 1102 of the fifth gasket 110, the third assembly holes 10012 of the inner ring 1001 of the third sprocket 100, the fourth through holes 92 of the fourth gasket 90, the second assembly holes 812 of the inner ring 81 of the second sprocket 80, and the third through holes 72 of the third gasket 70, and are screwed into the screw holes 512 of the first sprocket 50, so that the third gasket 70, the second sprocket 80, the fourth gasket 90, the third sprocket 100, the fifth gasket 110, and the fourth sprocket 120 are fastened between the heads of the studs 130 and the first sprocket 50.
應注意的是,第三墊片70、第二鏈輪80、第四墊片90、第三鏈輪100、第五墊片110及第四鏈輪120並不限於由螺柱130固定於第一鏈輪50。在其他實施例中,第三墊片、第二鏈輪、第四墊片、第三鏈輪、第五墊片及第四鏈輪可由鉚釘固定於第一鏈輪。此外,第三墊片、第二鏈輪、第四墊片、第三鏈輪、第五墊片及第四鏈輪可不固定於第一鏈輪,而可省略螺柱或鉚釘。 It should be noted that the third gasket 70, the second sprocket 80, the fourth gasket 90, the third sprocket 100, the fifth gasket 110 and the fourth sprocket 120 are not limited to being fixed to the first sprocket 50 by the stud 130. In other embodiments, the third gasket, the second sprocket, the fourth gasket, the third sprocket, the fifth gasket and the fourth sprocket may be fixed to the first sprocket by rivets. In addition, the third gasket, the second sprocket, the fourth gasket, the third sprocket, the fifth gasket and the fourth sprocket may not be fixed to the first sprocket, and the studs or rivets may be omitted.
第六墊片140具有多個內花鍵齒1401,第六墊片140的這些內花鍵齒1401用以直接安裝於自行車輪轂的多個齒槽。 The sixth gasket 140 has a plurality of internal spline teeth 1401, and these internal spline teeth 1401 of the sixth gasket 140 are used to be directly mounted on a plurality of tooth grooves of a bicycle wheel hub.
第五鏈輪150具有多個內花鍵齒1501,第五鏈輪150的這些內花鍵齒1501用以直接安裝於自行車輪轂的多個齒槽。第五鏈輪150的齒數例如為16齒。 The fifth sprocket 150 has a plurality of internal spline teeth 1501, and these internal spline teeth 1501 of the fifth sprocket 150 are used to be directly mounted on a plurality of tooth grooves of a bicycle wheel hub. The number of teeth of the fifth sprocket 150 is, for example, 16 teeth.
第六鏈輪160具有多個內花鍵齒1601,第六鏈輪160的這些內花鍵齒1601用以直接安裝於自行車輪轂的多個齒槽。第六鏈輪160的齒數例如為13齒。 The sixth sprocket 160 has a plurality of internal spline teeth 1601, and these internal spline teeth 1601 of the sixth sprocket 160 are used to be directly mounted on a plurality of tooth grooves of a bicycle wheel hub. The number of teeth of the sixth sprocket 160 is, for example, 13.
第七鏈輪170具有多個內花鍵齒1701,第七鏈輪170的這些內花鍵齒1701用以直接安裝於自行車輪轂的多個齒槽。 第七鏈輪170的齒數例如為11齒。 The seventh sprocket 170 has a plurality of internal spline teeth 1701, and these internal spline teeth 1701 of the seventh sprocket 170 are used to be directly mounted on a plurality of tooth grooves of a bicycle wheel hub. The number of teeth of the seventh sprocket 170 is, for example, 11.
請參閱圖5至圖7。圖5為根據本發明之第二實施例所揭露之自行車後飛輪的立體示意圖。圖6為圖5的部分分解示意圖。圖7為圖5的另一部分分解示意圖。 Please refer to Figures 5 to 7. Figure 5 is a three-dimensional schematic diagram of the rear flywheel of a bicycle disclosed according to the second embodiment of the present invention. Figure 6 is a partially exploded schematic diagram of Figure 5. Figure 7 is another partially exploded schematic diagram of Figure 5.
在本實施例中,自行車後飛輪1a用以安裝於一自行車輪轂(未繪示)上。自行車後飛輪1a包含一最大鏈輪10a、一第一墊片20a、一第一鏈輪50a及多個緊固件80a。此外,自行車後飛輪1a還可包含一次大鏈輪30a、一第二墊片40a、一第三墊片60a、一第二鏈輪70a、一第四墊片90a、一第三鏈輪100a、一第五墊片110a、一第四鏈輪120a、一第六墊片130a、一第五鏈輪140a、一第七墊片150a、一第六鏈輪160a、一第七鏈輪180a及一第八鏈輪190a。 In this embodiment, the bicycle rear flywheel 1a is used to be mounted on a bicycle wheel hub (not shown). The bicycle rear flywheel 1a includes a largest sprocket 10a, a first gasket 20a, a first sprocket 50a and a plurality of fasteners 80a. In addition, the bicycle rear flywheel 1a may also include a primary large sprocket 30a, a second gasket 40a, a third gasket 60a, a second sprocket 70a, a fourth gasket 90a, a third sprocket 100a, a fifth gasket 110a, a fourth sprocket 120a, a sixth gasket 130a, a fifth sprocket 140a, a seventh gasket 150a, a sixth sprocket 160a, a seventh sprocket 180a and an eighth sprocket 190a.
接著,請一併參閱圖6至圖8,圖8為圖5的部分剖視示意圖。 Next, please refer to Figures 6 to 8 together. Figure 8 is a partial cross-sectional view of Figure 5.
在本實施例中,最大鏈輪10a、次大鏈輪30a、第一鏈輪50a、第二鏈輪70a、第三鏈輪100a、第四鏈輪120a、第五鏈輪140a、第六鏈輪160a、第七鏈輪180a及第八鏈輪190a外徑由大至小依序地併排排列。第一墊片20a位於最大鏈輪10a與次大鏈輪30a之間。第二墊片40a位於次大鏈輪30a與第一鏈輪50a之間。第三墊片60a位於第一鏈輪50a與第二鏈輪70a之間。第四墊片90a位於第二鏈輪70a與第三鏈輪100a之間。第五墊片110a位於第三鏈輪100a與第四鏈輪120a之間。第六墊片130a位 於第四鏈輪120a與第五鏈輪140a之間。第七墊片150a位於第五鏈輪140a與第六鏈輪160a之間。以下將介紹各個鏈輪及墊片的細部結構。 In this embodiment, the largest sprocket 10a, the second largest sprocket 30a, the first sprocket 50a, the second sprocket 70a, the third sprocket 100a, the fourth sprocket 120a, the fifth sprocket 140a, the sixth sprocket 160a, the seventh sprocket 180a and the eighth sprocket 190a are arranged in order from large to small in outer diameter. The first gasket 20a is located between the largest sprocket 10a and the second largest sprocket 30a. The second gasket 40a is located between the second largest sprocket 30a and the first sprocket 50a. The third gasket 60a is located between the first sprocket 50a and the second sprocket 70a. The fourth gasket 90a is located between the second sprocket 70a and the third sprocket 100a. The fifth gasket 110a is located between the third sprocket 100a and the fourth sprocket 120a. The sixth gasket 130a is located between the fourth sprocket 120a and the fifth sprocket 140a. The seventh gasket 150a is located between the fifth sprocket 140a and the sixth sprocket 160a. The detailed structure of each sprocket and gasket will be introduced below.
最大鏈輪10a包含一內環11a、多個連接臂12a及一外齒環13a。內環11a透過這些連接臂12a連接於外齒環13a。內環11a具有多個內花鍵齒111a,這些內花鍵齒111a用以直接安裝於自行車輪轂的多個齒槽。各連接臂12a具有一組裝孔121a。外齒環13a上的齒數例如為50齒。 The largest sprocket 10a includes an inner ring 11a, a plurality of connecting arms 12a and an outer gear ring 13a. The inner ring 11a is connected to the outer gear ring 13a through the connecting arms 12a. The inner ring 11a has a plurality of inner spline teeth 111a, which are used to be directly mounted on a plurality of tooth grooves of a bicycle wheel hub. Each connecting arm 12a has an assembly hole 121a. The number of teeth on the outer gear ring 13a is, for example, 50 teeth.
第一墊片20a包含一內環21a、多個連接臂22a及一外環23a,內環21a透過這些連接臂22a連接於外環23a。內環21a具有多個內花鍵齒211a,這些內花鍵齒211a用以直接安裝於自行車輪轂的多個齒槽。各連接臂22a各具有一第一通孔221a。 The first gasket 20a includes an inner ring 21a, a plurality of connecting arms 22a and an outer ring 23a, wherein the inner ring 21a is connected to the outer ring 23a through the connecting arms 22a. The inner ring 21a has a plurality of inner spline teeth 211a, and the inner spline teeth 211a are used to be directly mounted on a plurality of tooth grooves of the bicycle wheel hub. Each connecting arm 22a has a first through hole 221a.
次大鏈輪30a包含一內環31a、多個連接臂32a及一外齒環33a。內環31a透過這些連接臂32a連接於外齒環33a。內環31a具有多個內花鍵齒311a,這些內花鍵齒311a用以直接安裝於自行車輪轂的多個齒槽。各連接臂32a具有一組裝孔321a。外齒環33a上的齒數例如為42齒。 The secondary large chain wheel 30a includes an inner ring 31a, a plurality of connecting arms 32a and an outer gear ring 33a. The inner ring 31a is connected to the outer gear ring 33a through the connecting arms 32a. The inner ring 31a has a plurality of inner spline teeth 311a, which are used to be directly mounted on a plurality of tooth grooves of a bicycle wheel hub. Each connecting arm 32a has an assembly hole 321a. The number of teeth on the outer gear ring 33a is, for example, 42 teeth.
第二墊片40a包含一內環41a、多個連接臂42a及外環43a,內環41a透過這些連接臂42a連接於外環43a。內環41a具有多個內花鍵齒411a,這些內花鍵齒411a用以直接安裝於自行車輪轂的多個齒槽。各連接臂42a各具有一第二通孔421a。 The second gasket 40a includes an inner ring 41a, a plurality of connecting arms 42a and an outer ring 43a, wherein the inner ring 41a is connected to the outer ring 43a through the connecting arms 42a. The inner ring 41a has a plurality of inner spline teeth 411a, and the inner spline teeth 411a are used to be directly mounted on a plurality of tooth grooves of a bicycle wheel hub. Each connecting arm 42a has a second through hole 421a.
第一鏈輪50a包含一內環51a、多個連接臂52a及一 外齒環53a。內環51a透過這些連接臂52a連接於外齒環53a。內環51a具有多個內花鍵齒511a,這些內花鍵齒511a用以直接安裝於自行車輪轂的多個齒槽。各連接臂52a具有一第一組裝孔521a。外齒環53a上的齒數例如為36齒。 The first sprocket 50a includes an inner ring 51a, a plurality of connecting arms 52a and an outer gear ring 53a. The inner ring 51a is connected to the outer gear ring 53a through the connecting arms 52a. The inner ring 51a has a plurality of inner spline teeth 511a, which are used to be directly mounted on a plurality of tooth grooves of a bicycle wheel hub. Each connecting arm 52a has a first assembly hole 521a. The number of teeth on the outer gear ring 53a is, for example, 36 teeth.
第三墊片60a包含一內環61a及連接於內環61a之外側的多個連接臂62a。各連接臂62a各具有一第三通孔621a。 The third gasket 60a includes an inner ring 61a and a plurality of connecting arms 62a connected to the outer side of the inner ring 61a. Each connecting arm 62a has a third through hole 621a.
第二鏈輪70a包含一內環71a、多個連接臂72a及一外齒環73a。內環71a透過這些連接臂72a連接於外齒環73a。內環71a具有多個內花鍵齒711a及多個螺孔712a。這些內花鍵齒711a用以直接安裝於自行車輪轂的多個齒槽。各連接臂72a具有一第二組裝孔721a。外齒環73a上的齒數例如為32齒。 The second sprocket 70a includes an inner ring 71a, a plurality of connecting arms 72a and an outer gear ring 73a. The inner ring 71a is connected to the outer gear ring 73a through the connecting arms 72a. The inner ring 71a has a plurality of inner spline teeth 711a and a plurality of screw holes 712a. The inner spline teeth 711a are used to be directly mounted on a plurality of tooth grooves of a bicycle wheel hub. Each connecting arm 72a has a second assembly hole 721a. The number of teeth on the outer gear ring 73a is, for example, 32 teeth.
這些緊固件80a例如為鉚釘。這些緊固件80a分別穿過最大鏈輪10a的這些組裝孔121a、第一墊片20a的這些第一通孔221a、次大鏈輪30a的這些組裝孔321a、第二墊片40a的這些第二通孔421a、第一鏈輪50a的這些第一組裝孔521a、第三墊片60a的這些第三通孔621a及第二鏈輪70a的這些第二組裝孔721a,而將最大鏈輪10a、第一墊片20a、次大鏈輪30a、第二墊片40a、第一鏈輪50a、第三墊片60a及第二鏈輪70a彼此緊固。 These fasteners 80a are, for example, rivets. These fasteners 80a respectively pass through the assembly holes 121a of the largest sprocket 10a, the first through holes 221a of the first gasket 20a, the assembly holes 321a of the second large sprocket 30a, the second through holes 421a of the second gasket 40a, the first assembly holes 521a of the first sprocket 50a, the third through holes 621a of the third gasket 60a, and the second assembly holes 721a of the second sprocket 70a, thereby fastening the largest sprocket 10a, the first gasket 20a, the second large sprocket 30a, the second gasket 40a, the first sprocket 50a, the third gasket 60a, and the second sprocket 70a to each other.
詳細來說,這些緊固件80a的結構相同,以下僅詳細介紹其中一者。緊固件80a包含一頭部81a及一身部82a,而身部82a包含一寬段821a、一窄段822a及一鉚合段823a。寬段821a位於頭部81a及窄段822a之間且連接於頭部81a及窄段 822a,而鉚合段823a位於窄段822a遠離寬段821a的一側。頭部81a的寬度W5大於寬段821a的寬度W6,寬段821a的寬度W6大於窄段822a的寬度W7,鉚合段823a的寬度W8大於窄段822a的寬度W7。這些緊固件80a的頭部81a抵靠於最大鏈輪10a,這些緊固件80a的身部82a的寬段821a分別穿過最大鏈輪10a的這些組裝孔121a、第一墊片20a的這些第一通孔221a、次大鏈輪30a的這些組裝孔321a、第二墊片40a的這些第二通孔421a、第一鏈輪50a的這些第一組裝孔521a及第三墊片60a的這些第三通孔621a。這些緊固件80a的身部82a的寬段821a抵靠於第二鏈輪70a,且這些緊固件80a的窄段822a分別穿過第二鏈輪70a的這些第二組裝孔721a。最大鏈輪10a、第一墊片20a、次大鏈輪30a、第二墊片40a、第一鏈輪50a、第三墊片60a及第二鏈輪70a被夾持於這些緊固件80a的頭部81a及身部82a的鉚合段823a之間,而使得最大鏈輪10a、第一墊片20a、次大鏈輪30a、第二墊片40a、第一鏈輪50a、第三墊片60a及第二鏈輪70a彼此緊固,故最大鏈輪10a、第一墊片20a、次大鏈輪30a、第二墊片40a、第一鏈輪50a、第三墊片60a及第二鏈輪70a整體有足夠的結構強度,以避免鏈條在最大鏈輪10a、次大鏈輪30a、第一鏈輪50a或第二鏈輪70a上移動時造成該鏈輪晃動的情形。 Specifically, the structures of these fasteners 80a are the same, and only one of them is described in detail below. The fastener 80a includes a head 81a and a body 82a, and the body 82a includes a wide section 821a, a narrow section 822a, and a riveting section 823a. The wide section 821a is located between the head 81a and the narrow section 822a and connected to the head 81a and the narrow section 822a, and the riveting section 823a is located on one side of the narrow section 822a away from the wide section 821a. The width W5 of the head portion 81a is greater than the width W6 of the wide section 821a, the width W6 of the wide section 821a is greater than the width W7 of the narrow section 822a, and the width W8 of the riveted section 823a is greater than the width W7 of the narrow section 822a. The heads 81a of the fasteners 80a abut against the largest sprocket 10a, and the wide sections 821a of the bodies 82a of the fasteners 80a respectively pass through the assembly holes 121a of the largest sprocket 10a, the first through holes 221a of the first gasket 20a, the assembly holes 321a of the second largest sprocket 30a, the second through holes 421a of the second gasket 40a, the first assembly holes 521a of the first sprocket 50a, and the third through holes 621a of the third gasket 60a. The wide sections 821a of the body 82a of these fasteners 80a abut against the second sprocket 70a, and the narrow sections 822a of these fasteners 80a pass through the second assembly holes 721a of the second sprocket 70a respectively. The largest sprocket 10a, the first gasket 20a, the second largest sprocket 30a, the second gasket 40a, the first sprocket 50a, the third gasket 60a and the second sprocket 70a are clamped between the head 81a and the riveting sections 823a of the body 82a of these fasteners 80a, so that the largest sprocket 10a, the first gasket 20a, the second largest sprocket 30a, the second gasket 40a, the first sprocket 50a, the third gasket 60a and the second sprocket 70a are clamped between the head 81a and the body 82a of these fasteners 80a. The plate 60a and the second sprocket 70a are fastened to each other, so the largest sprocket 10a, the first spacer 20a, the second largest sprocket 30a, the second spacer 40a, the first sprocket 50a, the third spacer 60a and the second sprocket 70a have sufficient structural strength as a whole to prevent the sprocket from shaking when the chain moves on the largest sprocket 10a, the second largest sprocket 30a, the first sprocket 50a or the second sprocket 70a.
在本實施例中,這些緊固件80a的中心C至自行車後飛輪1a的轉動軸線A的距離T例如至少為45.75mm。藉此,可讓這些緊固件80a將最大鏈輪10a、第一墊片20a、次大鏈輪 30a、第二墊片40a、第一鏈輪50a、第三墊片60a及第二鏈輪70a彼此緊固的位置足夠遠離自行車後飛輪1a的轉動軸線A,而使最大鏈輪10a、第一墊片20a、次大鏈輪30a、第二墊片40a、第一鏈輪50a、第三墊片60a及第二鏈輪70a整體的結構強度能進一步地增強。應注意的是,這些緊固件80a的中心C至自行車後飛輪1a的轉動軸線A的距離T可依據需求任意進行調整。 In this embodiment, the distance T between the center C of the fasteners 80a and the rotation axis A of the bicycle rear flywheel 1a is, for example, at least 45.75 mm. Thus, the fasteners 80a can fasten the largest sprocket 10a, the first gasket 20a, the second largest sprocket 30a, the second gasket 40a, the first sprocket 50a, the third gasket 60a and the second sprocket 70a to each other at a position far enough from the rotation axis A of the bicycle rear flywheel 1a, so that the overall structural strength of the largest sprocket 10a, the first gasket 20a, the second largest sprocket 30a, the second gasket 40a, the first sprocket 50a, the third gasket 60a and the second sprocket 70a can be further enhanced. It should be noted that the distance T from the center C of these fasteners 80a to the rotation axis A of the bicycle rear flywheel 1a can be adjusted arbitrarily according to needs.
在本實施例中,藉由這些緊固件80a的頭部81a抵靠最大鏈輪10a,且這些緊固件80a的身部82a的寬段821a穿過最大鏈輪10a、第一墊片20a、次大鏈輪30a、第二墊片40a、第一鏈輪50a及第三墊片60a並抵靠於第二鏈輪70a的配置,可利用緊固件80a之寬段821a的軸向長度限制最大鏈輪10a及第二鏈輪70a之間的軸向距離,再加上最大鏈輪10a、次大鏈輪30a、第一鏈輪50a及第二鏈輪70a中相鄰的二者之間有墊片的設置,可使最大鏈輪10a、次大鏈輪30a、第一鏈輪50a及第二鏈輪70a彼此之間的軸向距離固定,而確保最大鏈輪10a、次大鏈輪30a、第一鏈輪50a及第二鏈輪70a的平整度。 In this embodiment, the head 81a of the fasteners 80a abuts against the largest sprocket 10a, and the wide section 821a of the body 82a of the fasteners 80a passes through the largest sprocket 10a, the first gasket 20a, the second largest sprocket 30a, the second gasket 40a, the first sprocket 50a and the third gasket 60a and abuts against the second sprocket 70a. The axial length of the wide section 821a of the fastener 80a can be used to limit the maximum sprocket 10a. and the second sprocket 70a, and the spacer is provided between the adjacent two of the largest sprocket 10a, the second largest sprocket 30a, the first sprocket 50a and the second sprocket 70a, so that the axial distance between the largest sprocket 10a, the second largest sprocket 30a, the first sprocket 50a and the second sprocket 70a can be fixed, thereby ensuring the flatness of the largest sprocket 10a, the second largest sprocket 30a, the first sprocket 50a and the second sprocket 70a.
應注意的是,緊固件80a的身部82a並不限於包含寬段821a及窄段822a。在其他實施例中,緊固件之身部除了鉚合段外可為均勻寬度的柱體。 It should be noted that the body 82a of the fastener 80a is not limited to including the wide section 821a and the narrow section 822a. In other embodiments, the body of the fastener may be a column of uniform width except for the riveting section.
第四墊片90a具有多個內花鍵齒91a及多個第四通孔92a。第四墊片90a的這些內花鍵齒91a用以直接安裝於自行車輪轂的多個齒槽,而這些第四通孔92a分別對應於第二鏈輪70a 的這些螺孔712a。 The fourth gasket 90a has a plurality of internal spline teeth 91a and a plurality of fourth through holes 92a. The internal spline teeth 91a of the fourth gasket 90a are used to be directly mounted on a plurality of tooth grooves of the bicycle wheel hub, and the fourth through holes 92a correspond to the screw holes 712a of the second sprocket 70a, respectively.
第三鏈輪100a包含一內環1001a、多個連接臂1002a及一外齒環1003a。內環1001a透過這些連接臂1002a連接於外齒環1003a。內環1001a具有多個內花鍵齒10011a及多個第三組裝孔10012a。這些內花鍵齒10011a用以直接安裝於自行車輪轂的多個齒槽,而這些第三組裝孔10012a分別對應於第四墊片90a的這些第四通孔92a。外齒環上的齒數例如為28齒。 The third sprocket 100a includes an inner ring 1001a, a plurality of connecting arms 1002a and an outer gear ring 1003a. The inner ring 1001a is connected to the outer gear ring 1003a through the connecting arms 1002a. The inner ring 1001a has a plurality of inner spline teeth 10011a and a plurality of third assembly holes 10012a. The inner spline teeth 10011a are used to be directly mounted on a plurality of tooth grooves of a bicycle wheel hub, and the third assembly holes 10012a correspond to the fourth through holes 92a of the fourth gasket 90a. The number of teeth on the outer gear ring is, for example, 28 teeth.
第五墊片110a具有多個內花鍵齒1101a及多個第五通孔1102a。第五墊片110a的這些內花鍵齒1101a用以直接安裝於自行車輪轂的多個齒槽,而這些第五通孔1102a分別對應於第三鏈輪100a的這些第三組裝孔10012a。 The fifth gasket 110a has a plurality of internal spline teeth 1101a and a plurality of fifth through holes 1102a. The internal spline teeth 1101a of the fifth gasket 110a are used to be directly mounted on a plurality of tooth grooves of a bicycle wheel hub, and the fifth through holes 1102a correspond to the third assembly holes 10012a of the third sprocket 100a, respectively.
第四鏈輪120a包含一內環1201a、多個連接臂1202a及一外齒環1203a。內環1201a透過這些連接臂1202a連接於外齒環1203a。內環1201a具有多個內花鍵齒12011a及多個第四組裝孔12012a。這些內花鍵齒12011a用以直接安裝於自行車輪轂的多個齒槽,而這些第四組裝孔12012a分別對應於第五墊片110a的這些第五通孔1102a。外齒環1203a上的齒數例如為24齒。 The fourth sprocket 120a includes an inner ring 1201a, a plurality of connecting arms 1202a and an outer gear ring 1203a. The inner ring 1201a is connected to the outer gear ring 1203a through the connecting arms 1202a. The inner ring 1201a has a plurality of inner spline teeth 12011a and a plurality of fourth assembly holes 12012a. The inner spline teeth 12011a are used to be directly mounted on a plurality of tooth grooves of a bicycle wheel hub, and the fourth assembly holes 12012a correspond to the fifth through holes 1102a of the fifth gasket 110a. The number of teeth on the outer gear ring 1203a is, for example, 24 teeth.
第六墊片130a具有多個內花鍵齒1301a及多個第六通孔1302a。第六墊片130a的這些內花鍵齒1301a用以直接安裝於自行車輪轂的多個齒槽,而這些第六通孔1302a分別對應於第四鏈輪120a的這些第四組裝孔12012a。 The sixth gasket 130a has a plurality of internal spline teeth 1301a and a plurality of sixth through holes 1302a. The internal spline teeth 1301a of the sixth gasket 130a are used to be directly mounted on a plurality of tooth grooves of a bicycle wheel hub, and the sixth through holes 1302a correspond to the fourth assembly holes 12012a of the fourth sprocket 120a, respectively.
第五鏈輪140a包含一內環1401a、多個連接臂1402a 及一外齒環1403a。內環1401a透過這些連接臂1402a連接於外齒環1403a。內環1401a具有多個內花鍵齒14011a及多個第五組裝孔14012a。這些內花鍵齒14011a用以直接安裝於自行車輪轂的多個齒槽,而這些第五組裝孔14012a分別對應於第六墊片130a的這些第六通孔1302a。外齒環1403a上的齒數例如為20齒。 The fifth sprocket 140a includes an inner ring 1401a, a plurality of connecting arms 1402a, and an outer gear ring 1403a. The inner ring 1401a is connected to the outer gear ring 1403a through the connecting arms 1402a. The inner ring 1401a has a plurality of inner spline teeth 14011a and a plurality of fifth assembly holes 14012a. The inner spline teeth 14011a are used to be directly mounted on a plurality of tooth grooves of a bicycle wheel hub, and the fifth assembly holes 14012a correspond to the sixth through holes 1302a of the sixth gasket 130a. The number of teeth on the outer gear ring 1403a is, for example, 20 teeth.
第七墊片150a具有多個內花鍵齒1501a及多個第七通孔1502a。第七墊片150a的這些內花鍵齒1501a用以直接安裝於自行車輪轂的多個齒槽,而這些第七通孔1502a分別對應於第五鏈輪140a的這些第五組裝孔14012a。 The seventh gasket 150a has a plurality of internal spline teeth 1501a and a plurality of seventh through holes 1502a. The internal spline teeth 1501a of the seventh gasket 150a are used to be directly mounted on a plurality of tooth grooves of a bicycle wheel hub, and the seventh through holes 1502a correspond to the fifth assembly holes 14012a of the fifth sprocket 140a, respectively.
第六鏈輪160a具有多個內花鍵齒1601a及多個第六組裝孔1602a。這些內花鍵齒1601a用以直接安裝於自行車輪轂的多個齒槽,而這些第六組裝孔1602a分別對應於第七墊片150a的這些第七通孔1502a。第六鏈輪160a的齒數例如為16齒。 The sixth sprocket 160a has a plurality of internal spline teeth 1601a and a plurality of sixth assembly holes 1602a. These internal spline teeth 1601a are used to be directly mounted on a plurality of tooth grooves of a bicycle wheel hub, and these sixth assembly holes 1602a correspond to these seventh through holes 1502a of the seventh gasket 150a respectively. The number of teeth of the sixth sprocket 160a is, for example, 16.
在本實施例中,自行車後飛輪1a還可包含多個螺柱170a。這些螺柱170a分別穿過第六鏈輪160a的這些第六組裝孔1602a、第七墊片150a的這些第七通孔1502a、第五鏈輪140a之內環1401a的這些第五組裝孔14012a、第六墊片130a的這些第六通孔1302a、第四鏈輪120a之內環1201a的這些第四組裝孔12012a、第五墊片110a的這些第五通孔1102a、第三鏈輪100a之內環1001a的這些第三組裝孔10012a及第四墊片90a的這些第四通孔92a,並螺合於第二鏈輪70a這些螺孔712a,以使第四墊片90a、第三鏈輪100a、第五墊片110a、第四鏈輪120a、第六墊 片130a、第五鏈輪140a、第七墊片150a、第六鏈輪160a緊固於第二鏈輪70a上。 In this embodiment, the bicycle rear flywheel 1a may further include a plurality of studs 170a. The studs 170a respectively pass through the sixth assembly holes 1602a of the sixth sprocket 160a, the seventh through holes 1502a of the seventh gasket 150a, the fifth assembly holes 14012a of the inner ring 1401a of the fifth sprocket 140a, the sixth through holes 1302a of the sixth gasket 130a, the fourth assembly holes 12012a of the inner ring 1201a of the fourth sprocket 120a, the fifth through holes 1102a of the fifth gasket 110a, and the fifth assembly holes 12012a of the inner ring 1201a of the fourth sprocket 120a. a, the third assembly holes 10012a of the inner ring 1001a of the third sprocket 100a and the fourth through holes 92a of the fourth gasket 90a are screwed into the screw holes 712a of the second sprocket 70a, so that the fourth gasket 90a, the third sprocket 100a, the fifth gasket 110a, the fourth sprocket 120a, the sixth gasket 130a, the fifth sprocket 140a, the seventh gasket 150a, and the sixth sprocket 160a are fastened to the second sprocket 70a.
應注意的是,第四墊片90a、第三鏈輪100a、第五墊片110a、第四鏈輪120a、第六墊片130a、第五鏈輪140a、第七墊片150a、第六鏈輪160a並不限於由螺柱170a固定於第二鏈輪70a。在其他實施例中,第四墊片、第三鏈輪、第五墊片、第四鏈輪、第六墊片、第五鏈輪、第七墊片、第六鏈輪可由鉚釘固定於第二鏈輪。此外,第四墊片、第三鏈輪、第五墊片、第四鏈輪、第六墊片、第五鏈輪、第七墊片、第六鏈輪可不固定於第二鏈輪,而可省略螺柱或鉚釘。 It should be noted that the fourth shim 90a, the third sprocket 100a, the fifth shim 110a, the fourth sprocket 120a, the sixth shim 130a, the fifth sprocket 140a, the seventh shim 150a, and the sixth sprocket 160a are not limited to being fixed to the second sprocket 70a by the stud 170a. In other embodiments, the fourth shim, the third sprocket, the fifth shim, the fourth sprocket, the sixth shim, the fifth sprocket, the seventh shim, and the sixth sprocket may be fixed to the second sprocket by rivets. In addition, the fourth shim, the third sprocket, the fifth shim, the fourth sprocket, the sixth shim, the fifth sprocket, the seventh shim, and the sixth sprocket may not be fixed to the second sprocket, and the studs or rivets may be omitted.
第七鏈輪180a具有多個內花鍵齒1801a,第七鏈輪180a的這些內花鍵齒1801a用以直接安裝於自行車輪轂的多個齒槽。第七鏈輪180a的齒數例如為13齒。 The seventh sprocket 180a has a plurality of internal spline teeth 1801a, and these internal spline teeth 1801a of the seventh sprocket 180a are used to be directly mounted on a plurality of tooth grooves of a bicycle wheel hub. The number of teeth of the seventh sprocket 180a is, for example, 13.
第八鏈輪190a具有多個內花鍵齒1901a,第八鏈輪190a的這些內花鍵齒1901a用以直接安裝於自行車輪轂的多個齒槽。第八鏈輪190a的齒數例如為11齒。 The eighth sprocket 190a has a plurality of internal spline teeth 1901a, and these internal spline teeth 1901a of the eighth sprocket 190a are used to be directly mounted on a plurality of tooth grooves of a bicycle wheel hub. The number of teeth of the eighth sprocket 190a is, for example, 11.
請參閱圖9至圖11。圖9為根據本發明之第三實施例所揭露之自行車後飛輪的立體示意圖。圖10為圖9的部分分解示意圖。圖11為圖9的另一部分分解示意圖。 Please refer to Figures 9 to 11. Figure 9 is a three-dimensional schematic diagram of the rear flywheel of a bicycle disclosed in the third embodiment of the present invention. Figure 10 is a partially exploded schematic diagram of Figure 9. Figure 11 is another partially exploded schematic diagram of Figure 9.
在本實施例中,自行車後飛輪1b用以安裝於一自行車輪轂(未繪示)上。自行車後飛輪1b包含一最大鏈輪10b、一第一墊片20b、一第一鏈輪50b及多個緊固件80b。此外,自行車後 飛輪1b還可包含一次大鏈輪30b、一第二墊片40b、一第三墊片60b、一第二鏈輪70b、一第四墊片90b、一第三鏈輪100b、一第五墊片110b、一第四鏈輪120b、一第六墊片130b、一第五鏈輪140b、一第七墊片150b、一第六鏈輪160b、一第八墊片170b、一第七鏈輪180b、一第八鏈輪200b及一第九鏈輪210b。 In this embodiment, the bicycle rear flywheel 1b is used to be mounted on a bicycle wheel hub (not shown). The bicycle rear flywheel 1b includes a largest sprocket 10b, a first gasket 20b, a first sprocket 50b and a plurality of fasteners 80b. In addition, the bicycle rear flywheel 1b may also include a primary large sprocket 30b, a second gasket 40b, a third gasket 60b, a second sprocket 70b, a fourth gasket 90b, a third sprocket 100b, a fifth gasket 110b, a fourth sprocket 120b, a sixth gasket 130b, a fifth sprocket 140b, a seventh gasket 150b, a sixth sprocket 160b, an eighth gasket 170b, a seventh sprocket 180b, an eighth sprocket 200b and a ninth sprocket 210b.
接著,請一併參閱圖10至圖12,圖12為圖9的部分剖視示意圖。 Next, please refer to Figures 10 to 12. Figure 12 is a partial cross-sectional view of Figure 9.
在本實施例中,最大鏈輪10b、次大鏈輪30b、第一鏈輪50b、第二鏈輪70b、第三鏈輪100b、第四鏈輪120b、第五鏈輪140b、第六鏈輪160b、第七鏈輪180b、第八鏈輪200b及第九鏈輪210b外徑由大至小依序地併排排列。第一墊片20b位於最大鏈輪10b與次大鏈輪30b之間。第二墊片40b至少部分位於次大鏈輪30b與第一鏈輪50b之間。第三墊片60b位於第一鏈輪50b與第二鏈輪70b之間。第四墊片90b位於第二鏈輪70b與第三鏈輪100b之間。第五墊片110b位於第三鏈輪100b與第四鏈輪120b之間。第六墊片130b位於第四鏈輪120b與第五鏈輪140b之間。第七墊片150b位於第五鏈輪140b與第六鏈輪160b之間。第八墊片170b位於第六鏈輪160b與第七鏈輪180b之間。以下將介紹各個鏈輪及墊片的細部結構。 In this embodiment, the largest sprocket 10b, the second largest sprocket 30b, the first sprocket 50b, the second sprocket 70b, the third sprocket 100b, the fourth sprocket 120b, the fifth sprocket 140b, the sixth sprocket 160b, the seventh sprocket 180b, the eighth sprocket 200b and the ninth sprocket 210b are arranged in order from large to small in outer diameter. The first gasket 20b is located between the largest sprocket 10b and the second largest sprocket 30b. The second gasket 40b is at least partially located between the second largest sprocket 30b and the first sprocket 50b. The third gasket 60b is located between the first sprocket 50b and the second sprocket 70b. The fourth gasket 90b is located between the second sprocket 70b and the third sprocket 100b. The fifth gasket 110b is located between the third sprocket 100b and the fourth sprocket 120b. The sixth gasket 130b is located between the fourth sprocket 120b and the fifth sprocket 140b. The seventh gasket 150b is located between the fifth sprocket 140b and the sixth sprocket 160b. The eighth gasket 170b is located between the sixth sprocket 160b and the seventh sprocket 180b. The detailed structure of each sprocket and gasket will be introduced below.
最大鏈輪10b包含一外齒環11b及自外齒環11b之內側凸出的多個連接臂12b。各連接臂12b具有一組裝孔121b。外齒環11b上的齒數例如為50齒。 The largest sprocket 10b includes an outer gear ring 11b and a plurality of connecting arms 12b protruding from the inner side of the outer gear ring 11b. Each connecting arm 12b has an assembly hole 121b. The number of teeth on the outer gear ring 11b is, for example, 50.
第一墊片20b包含一內環21b、多個連接臂22b及外環23b,內環21b透過這些連接臂22b連接於外環23b。內環21b具有多個內花鍵齒211b,這些內花鍵齒211b用以直接安裝於自行車輪轂的多個齒槽。各連接臂22b各具有一第一通孔221b,而外環23b具有多個組裝孔231b。 The first gasket 20b includes an inner ring 21b, a plurality of connecting arms 22b and an outer ring 23b, wherein the inner ring 21b is connected to the outer ring 23b through the connecting arms 22b. The inner ring 21b has a plurality of inner spline teeth 211b, which are used to be directly mounted on a plurality of tooth grooves of a bicycle wheel hub. Each connecting arm 22b has a first through hole 221b, and the outer ring 23b has a plurality of assembly holes 231b.
次大鏈輪30b包含一外齒環31b及自外齒環31b之內側凸出的多個連接臂32b。各連接臂32b具有一組裝孔321b。外齒環31b上的齒數例如為42齒。 The secondary large sprocket 30b includes an outer gear ring 31b and a plurality of connecting arms 32b protruding from the inner side of the outer gear ring 31b. Each connecting arm 32b has an assembly hole 321b. The number of teeth on the outer gear ring 31b is, for example, 42.
在本實施例中,自行車後飛輪1b還可包含多個鉚釘F。這些鉚釘F分別穿過最大鏈輪10b之連接臂12b的這些組裝孔121b、第一墊片20b之外環23b的這些組裝孔231b及次大鏈輪30b之連接臂32b的這些組裝孔321b,而將最大鏈輪10b及次大鏈輪30b固定於第一墊片20b。最大鏈輪10b及次大鏈輪30b透過第一墊片20b的這些內花鍵齒211b安裝於自行車輪轂的多個齒槽。 In this embodiment, the bicycle rear flywheel 1b may also include a plurality of rivets F. These rivets F respectively pass through the assembly holes 121b of the connecting arm 12b of the largest sprocket 10b, the assembly holes 231b of the outer ring 23b of the first gasket 20b, and the assembly holes 321b of the connecting arm 32b of the second largest sprocket 30b, thereby fixing the largest sprocket 10b and the second largest sprocket 30b to the first gasket 20b. The largest sprocket 10b and the second largest sprocket 30b are installed on the plurality of tooth grooves of the bicycle wheel hub through the inner spline teeth 211b of the first gasket 20b.
第二墊片40b包含一內環41b、多個連接臂42b及外環43b,內環41b透過這些連接臂42b連接於外環43b。內環41b具有多個內花鍵齒411b,這些內花鍵齒411b用以直接安裝於自行車輪轂的多個齒槽。各連接臂42b各具有一第二通孔421b。 The second gasket 40b includes an inner ring 41b, a plurality of connecting arms 42b and an outer ring 43b, wherein the inner ring 41b is connected to the outer ring 43b through the connecting arms 42b. The inner ring 41b has a plurality of inner spline teeth 411b, and the inner spline teeth 411b are used to be directly mounted on a plurality of tooth grooves of the bicycle wheel hub. Each connecting arm 42b has a second through hole 421b.
第一鏈輪50b包含一內環51b、多個連接臂52b及一外齒環53b。內環51b透過這些連接臂52b連接於外齒環53b。內環51b具有多個內花鍵齒511b,這些內花鍵齒511b用以直接安 裝於自行車輪轂的多個齒槽。各連接臂52b具有一第一組裝孔521b。外齒環53b上的齒數例如為36齒。 The first sprocket 50b includes an inner ring 51b, a plurality of connecting arms 52b and an outer gear ring 53b. The inner ring 51b is connected to the outer gear ring 53b through the connecting arms 52b. The inner ring 51b has a plurality of inner spline teeth 511b, which are used to be directly mounted on a plurality of tooth grooves of a bicycle wheel hub. Each connecting arm 52b has a first assembly hole 521b. The number of teeth on the outer gear ring 53b is, for example, 36 teeth.
第三墊片60b包含一內環61b及連接於內環61b之外側的多個連接臂62b。各連接臂62b各具有一第三通孔621b。 The third gasket 60b includes an inner ring 61b and a plurality of connecting arms 62b connected to the outer side of the inner ring 61b. Each connecting arm 62b has a third through hole 621b.
第二鏈輪70b包含一內環71b、多個連接臂72b及一外齒環73b。內環71b透過這些連接臂72b連接於外齒環73b。內環71b具有多個內花鍵齒711b及多個螺孔712b。這些內花鍵齒711b用以直接安裝於自行車輪轂的多個齒槽。各連接臂72b具有一第二組裝孔721b。外齒環73b上的齒數例如為32齒。 The second sprocket 70b includes an inner ring 71b, a plurality of connecting arms 72b and an outer gear ring 73b. The inner ring 71b is connected to the outer gear ring 73b through the connecting arms 72b. The inner ring 71b has a plurality of inner spline teeth 711b and a plurality of screw holes 712b. The inner spline teeth 711b are used to be directly mounted on a plurality of tooth grooves of a bicycle wheel hub. Each connecting arm 72b has a second assembly hole 721b. The number of teeth on the outer gear ring 73b is, for example, 32 teeth.
這些緊固件80b例如為鉚釘。這些緊固件80b分別穿過第一墊片20b的這些第一通孔221b、第二墊片40b的這些第二通孔421b、第一鏈輪50b的這些第一組裝孔521b、第三墊片60b的這些第三通孔621b及第二鏈輪70b的這些第二組裝孔721b,而將最大鏈輪10b、第一墊片20b、次大鏈輪30b、第二墊片40b、第一鏈輪50b、第三墊片60b及第二鏈輪70b彼此緊固。 These fasteners 80b are, for example, rivets. These fasteners 80b respectively pass through the first through holes 221b of the first gasket 20b, the second through holes 421b of the second gasket 40b, the first assembly holes 521b of the first sprocket 50b, the third through holes 621b of the third gasket 60b, and the second assembly holes 721b of the second sprocket 70b, and fasten the largest sprocket 10b, the first gasket 20b, the second largest sprocket 30b, the second gasket 40b, the first sprocket 50b, the third gasket 60b, and the second sprocket 70b to each other.
詳細來說,這些緊固件80b的結構相同,以下僅詳細介紹其中一者。緊固件80b包含一頭部81b及一身部82b,而身部82b包含一寬段821b、一窄段822b及一鉚合段823b。寬段821b位於頭部81b及窄段822b之間且連接於頭部81b及窄段822b,而鉚合段823b位於窄段822b遠離寬段821b的一側。頭部81b的寬度W9大於寬段821b的寬度W10,寬段821b的寬度W10大於窄段822b的寬度W11,鉚合段823b的寬度W12大於窄段 822b的寬度W11。這些緊固件80b的頭部81b抵靠於第一墊片20b,這些緊固件80b的身部82b的寬段821b分別穿過第一墊片20b的這些第一通孔221b、第二墊片40b的這些第二通孔421b、第一鏈輪50b的這些第一組裝孔521b及第三墊片60b的這些第三通孔621b。這些緊固件80b的身部82b的寬段821b抵靠於第二鏈輪70b,且這些緊固件80b的窄段822b分別穿過第二鏈輪70b的這些第二組裝孔721b。第一墊片20b、第二墊片40b、第一鏈輪50b、第三墊片60b及第二鏈輪70b被夾持於這些緊固件80b的頭部81b及身部82b的鉚合段823b之間,而使得最大鏈輪10b、第一墊片20b、次大鏈輪30b、第二墊片40b、第一鏈輪50b、第三墊片60b及第二鏈輪70b彼此緊固,故最大鏈輪10b、第一墊片20b、次大鏈輪30b、第二墊片40b、第一鏈輪50b、第三墊片60b及第二鏈輪70b整體有足夠的結構強度,以避免鏈條在最大鏈輪10b、次大鏈輪30b、第一鏈輪50b或第二鏈輪70b上移動時造成該鏈輪晃動的情形。 In detail, the structures of these fasteners 80b are the same, and only one of them is described in detail below. The fastener 80b includes a head 81b and a body 82b, and the body 82b includes a wide section 821b, a narrow section 822b and a riveting section 823b. The wide section 821b is located between the head 81b and the narrow section 822b and connected to the head 81b and the narrow section 822b, and the riveting section 823b is located on one side of the narrow section 822b away from the wide section 821b. The width W9 of the head 81b is greater than the width W10 of the wide section 821b, the width W10 of the wide section 821b is greater than the width W11 of the narrow section 822b, and the width W12 of the riveting section 823b is greater than the width W11 of the narrow section 822b. The heads 81b of the fasteners 80b abut against the first gasket 20b, and the widths 821b of the bodies 82b of the fasteners 80b pass through the first through holes 221b of the first gasket 20b, the second through holes 421b of the second gasket 40b, the first assembly holes 521b of the first sprocket 50b, and the third through holes 621b of the third gasket 60b. The wide sections 821b of the body 82b of these fasteners 80b abut against the second sprocket 70b, and the narrow sections 822b of these fasteners 80b pass through the second assembly holes 721b of the second sprocket 70b respectively. The first gasket 20b, the second gasket 40b, the first sprocket 50b, the third gasket 60b and the second sprocket 70b are clamped between the head 81b and the riveting sections 823b of the body 82b of these fasteners 80b, so that the largest sprocket 10b, the first gasket 20b, the second largest sprocket 30b, the second gasket 40b, the first sprocket 50b, the third gasket 60b and the second sprocket 70b are clamped. The wheels 70b are fastened to each other, so the largest sprocket 10b, the first gasket 20b, the second largest sprocket 30b, the second gasket 40b, the first sprocket 50b, the third gasket 60b and the second sprocket 70b have sufficient structural strength as a whole to prevent the sprocket from shaking when the chain moves on the largest sprocket 10b, the second largest sprocket 30b, the first sprocket 50b or the second sprocket 70b.
在本實施例中,這些緊固件80b的中心C至自行車後飛輪1b的轉動軸線A的距離T例如至少為45.75mm。藉此,可讓這些緊固件80b將最大鏈輪10b、第一墊片20b、次大鏈輪30b、第二墊片40b、第一鏈輪50b、第三墊片60b及第二鏈輪70b彼此緊固的位置足夠遠離自行車後飛輪1b的轉動軸線A,而使最大鏈輪10b、第一墊片20b、次大鏈輪30b、第二墊片40b、第一鏈輪50b、第三墊片60b及第二鏈輪70b整體的結構強度能進一 步地增強。應注意的是,這些緊固件80b的中心C至自行車後飛輪1b的轉動軸線A的距離T可依據需求任意進行調整。 In this embodiment, the distance T between the center C of the fasteners 80b and the rotation axis A of the rear flywheel 1b of the bicycle is, for example, at least 45.75 mm. Thus, the fasteners 80b can fasten the largest sprocket 10b, the first gasket 20b, the second largest sprocket 30b, the second gasket 40b, the first sprocket 50b, the third gasket 60b and the second sprocket 70b to each other at a position far enough from the rotation axis A of the rear flywheel 1b of the bicycle, so that the overall structural strength of the largest sprocket 10b, the first gasket 20b, the second largest sprocket 30b, the second gasket 40b, the first sprocket 50b, the third gasket 60b and the second sprocket 70b can be further enhanced. It should be noted that the distance T from the center C of these fasteners 80b to the rotation axis A of the bicycle rear flywheel 1b can be adjusted arbitrarily according to needs.
在本實施例中,藉由這些緊固件80b的頭部81b抵靠第一墊片20b,且這些緊固件80b的身部82b的寬段821b穿過第一墊片20b、第二墊片40b、第一鏈輪50b及第三墊片60b並抵靠於第二鏈輪70b的配置,可利用緊固件80b之寬段821b的軸向長度限制第一墊片20b及第二鏈輪70b之間的軸向距離,再加上最大鏈輪10b、次大鏈輪30b、第一鏈輪50b及第二鏈輪70b中相鄰的二者之間有墊片的設置,可使最大鏈輪10b、次大鏈輪30b、第一鏈輪50b及第二鏈輪70b彼此之間的軸向距離固定,而確保最大鏈輪10b、次大鏈輪30b、第一鏈輪50b及第二鏈輪70b的平整度。 In this embodiment, the head 81b of the fasteners 80b abuts against the first gasket 20b, and the wide section 821b of the body 82b of the fasteners 80b passes through the first gasket 20b, the second gasket 40b, the first sprocket 50b and the third gasket 60b and abuts against the second sprocket 70b. The axial length of the wide section 821b of the fastener 80b can be used to limit the first gasket 20b and the second sprocket 70b. The axial distance between the largest sprocket 10b, the second largest sprocket 30b, the first sprocket 50b and the second sprocket 70b, plus the spacer between the adjacent two of them, can fix the axial distance between the largest sprocket 10b, the second largest sprocket 30b, the first sprocket 50b and the second sprocket 70b, and ensure the flatness of the largest sprocket 10b, the second largest sprocket 30b, the first sprocket 50b and the second sprocket 70b.
應注意的是,緊固件80b的身部82b並不限於包含寬段821b及窄段822b。在其他實施例中,緊固件之身部除了鉚合段之外可為均勻寬度的柱體。 It should be noted that the body 82b of the fastener 80b is not limited to including the wide section 821b and the narrow section 822b. In other embodiments, the body of the fastener may be a column of uniform width except for the riveting section.
第四墊片90b具有多個內花鍵齒91b及多個第四通孔92b。第四墊片90b的這些內花鍵齒91b用以直接安裝於自行車輪轂的多個齒槽,而這些第四通孔92b分別對應於第二鏈輪70b的這些螺孔712b。 The fourth gasket 90b has a plurality of internal spline teeth 91b and a plurality of fourth through holes 92b. The internal spline teeth 91b of the fourth gasket 90b are used to be directly mounted on a plurality of tooth grooves of the bicycle wheel hub, and the fourth through holes 92b correspond to the screw holes 712b of the second sprocket 70b respectively.
第三鏈輪100b包含一內環1001b、多個連接臂1002b及一外齒環1003b。內環1001b透過這些連接臂1002b連接於外齒環1003b。內環1001b具有多個內花鍵齒10011b及多個第三組 裝孔10012b。這些內花鍵齒10011b用以直接安裝於自行車輪轂的多個齒槽,而這些第三組裝孔10012b分別對應於第四墊片90b的這些第四通孔92b。外齒環1003b上的齒數例如為28齒。 The third sprocket 100b includes an inner ring 1001b, a plurality of connecting arms 1002b and an outer gear ring 1003b. The inner ring 1001b is connected to the outer gear ring 1003b through the connecting arms 1002b. The inner ring 1001b has a plurality of inner spline teeth 10011b and a plurality of third assembly holes 10012b. The inner spline teeth 10011b are used to be directly mounted on a plurality of tooth grooves of a bicycle wheel hub, and the third assembly holes 10012b correspond to the fourth through holes 92b of the fourth gasket 90b. The number of teeth on the outer gear ring 1003b is, for example, 28 teeth.
第五墊片110b具有多個內花鍵齒1101b及多個第五通孔1102b。第五墊片110b的這些內花鍵齒1101b用以直接安裝於自行車輪轂的多個齒槽,而這些第五通孔1102b分別對應於第三鏈輪100b的這些第三組裝孔10012b。 The fifth gasket 110b has a plurality of internal spline teeth 1101b and a plurality of fifth through holes 1102b. The internal spline teeth 1101b of the fifth gasket 110b are used to be directly mounted on a plurality of tooth grooves of a bicycle wheel hub, and the fifth through holes 1102b correspond to the third assembly holes 10012b of the third sprocket 100b, respectively.
第四鏈輪120b包含一內環1201b、多個連接臂1202b及一外齒環1203b。內環1201b透過這些連接臂1202b連接於外齒環1203b。內環1201b具有多個內花鍵齒12011b及多個第四組裝孔12012b。這些內花鍵齒12011b用以直接安裝於自行車輪轂的多個齒槽,而這些第四組裝孔12012b分別對應於第五墊片110b的這些第五通孔1102b。外齒環1203b上的齒數例如為24齒。 The fourth sprocket 120b includes an inner ring 1201b, a plurality of connecting arms 1202b and an outer gear ring 1203b. The inner ring 1201b is connected to the outer gear ring 1203b through the connecting arms 1202b. The inner ring 1201b has a plurality of inner spline teeth 12011b and a plurality of fourth assembly holes 12012b. The inner spline teeth 12011b are used to be directly mounted on a plurality of tooth grooves of a bicycle wheel hub, and the fourth assembly holes 12012b correspond to the fifth through holes 1102b of the fifth gasket 110b. The number of teeth on the outer gear ring 1203b is, for example, 24 teeth.
第六墊片130b具有多個內花鍵齒1301b及多個第六通孔1302b。第六墊片130b的這些內花鍵齒1301b用以直接安裝於自行車輪轂的多個齒槽,而這些第六通孔1302b分別對應於第四鏈輪120b的這些第四組裝孔12012b。 The sixth gasket 130b has a plurality of internal spline teeth 1301b and a plurality of sixth through holes 1302b. The internal spline teeth 1301b of the sixth gasket 130b are used to be directly mounted on a plurality of tooth grooves of a bicycle wheel hub, and the sixth through holes 1302b correspond to the fourth assembly holes 12012b of the fourth sprocket 120b, respectively.
第五鏈輪140b包含一內環1401b、多個連接臂1402b及一外齒環1403b。內環1401b透過這些連接臂1402b連接於外齒環1403b。內環1401b具有多個內花鍵齒14011b及多個第五組裝孔14012b。這些內花鍵齒14011b用以直接安裝於自行車輪轂的多個齒槽,而這些第五組裝孔14012b分別對應於第六墊片130b 的這些第六通孔1302b。外齒環1403b上的齒數例如為21齒。 The fifth sprocket 140b includes an inner ring 1401b, a plurality of connecting arms 1402b and an outer gear ring 1403b. The inner ring 1401b is connected to the outer gear ring 1403b through the connecting arms 1402b. The inner ring 1401b has a plurality of inner spline teeth 14011b and a plurality of fifth assembly holes 14012b. The inner spline teeth 14011b are used to be directly mounted on a plurality of tooth grooves of a bicycle wheel hub, and the fifth assembly holes 14012b correspond to the sixth through holes 1302b of the sixth gasket 130b, respectively. The number of teeth on the outer gear ring 1403b is, for example, 21 teeth.
第七墊片150b具有多個內花鍵齒1501b及多個第七通孔1502b。第七墊片150b的這些內花鍵齒1501b用以直接安裝於自行車輪轂的多個齒槽,而這些第七通孔1502b分別對應於第五鏈輪140b的這些第五組裝孔14012b。 The seventh gasket 150b has a plurality of inner spline teeth 1501b and a plurality of seventh through holes 1502b. The inner spline teeth 1501b of the seventh gasket 150b are used to be directly mounted on a plurality of tooth grooves of a bicycle wheel hub, and the seventh through holes 1502b correspond to the fifth assembly holes 14012b of the fifth sprocket 140b, respectively.
第六鏈輪160b包含一內環1601b、多個連接臂1602b及一外齒環1603b。內環1601b透過這些連接臂1602b連接於外齒環1603b。內環1601b具有多個內花鍵齒16011b及多個第六組裝孔16012b。這些內花鍵齒16011b用以直接安裝於自行車輪轂的多個齒槽,而這些第六組裝孔16012b分別對應於第七墊片150b的這些第七通孔1502b。外齒環1603b上的齒數例如為18齒。 The sixth sprocket 160b includes an inner ring 1601b, a plurality of connecting arms 1602b and an outer gear ring 1603b. The inner ring 1601b is connected to the outer gear ring 1603b through the connecting arms 1602b. The inner ring 1601b has a plurality of inner spline teeth 16011b and a plurality of sixth assembly holes 16012b. The inner spline teeth 16011b are used to be directly mounted on a plurality of tooth grooves of a bicycle wheel hub, and the sixth assembly holes 16012b correspond to the seventh through holes 1502b of the seventh gasket 150b. The number of teeth on the outer gear ring 1603b is, for example, 18 teeth.
第八墊片170b具有多個內花鍵齒1701b及多個第八通孔1702b。第八墊片170b的這些內花鍵齒1701b用以直接安裝於自行車輪轂的多個齒槽,而這些第八通孔1702b分別對應於第六鏈輪160b的這些第六組裝孔16012b。 The eighth gasket 170b has a plurality of internal spline teeth 1701b and a plurality of eighth through holes 1702b. The internal spline teeth 1701b of the eighth gasket 170b are used to be directly mounted on a plurality of tooth grooves of a bicycle wheel hub, and the eighth through holes 1702b correspond to the sixth assembly holes 16012b of the sixth sprocket 160b, respectively.
第七鏈輪180b具有多個內花鍵齒1801b及多個第七組裝孔1802b。這些內花鍵齒1801b用以直接安裝於自行車輪轂的多個齒槽,而這些第七組裝孔1802b分別對應於第八墊片170b的這些第八通孔1702b。第六鏈輪160b的齒數例如為15齒。 The seventh sprocket 180b has a plurality of inner spline teeth 1801b and a plurality of seventh assembly holes 1802b. These inner spline teeth 1801b are used to be directly mounted on a plurality of tooth grooves of the bicycle wheel hub, and these seventh assembly holes 1802b correspond to these eighth through holes 1702b of the eighth gasket 170b respectively. The number of teeth of the sixth sprocket 160b is, for example, 15 teeth.
在本實施例中,自行車後飛輪1b還可包含多個螺柱190b。這些螺柱190b分別穿過第七鏈輪180b的這些第七組裝孔1802b、第八墊片170b的這些第八通孔1702b、第六鏈輪160b的 這些第六組裝孔16012b、第七墊片150b的這些第七通孔1502b、第五鏈輪140b之內環1401b的這些第五組裝孔14012b、第六墊片130b的這些第六通孔1302b、第四鏈輪120b之內環1201b的這些第四組裝孔12012b、第五墊片110b的這些第五通孔1102b、第三鏈輪100b之內環1001b的這些第三組裝孔10012b及第四墊片90b的這些第四通孔92b,並螺合於第二鏈輪70b這些螺孔712b,以使第四墊片90b、第三鏈輪100b、第五墊片110b、第四鏈輪120b、第六墊片130b、第五鏈輪140b、第七墊片150b、第六鏈輪160b、第八墊片170b及第七鏈輪180b緊固於第二鏈輪70b上。 In this embodiment, the bicycle rear flywheel 1b may also include a plurality of studs 190b. The studs 190b respectively pass through the seventh assembly holes 1802b of the seventh sprocket 180b, the eighth through holes 1702b of the eighth gasket 170b, the sixth assembly holes 16012b of the sixth sprocket 160b, the seventh through holes 1502b of the seventh gasket 150b, the fifth assembly holes 14012b of the inner ring 1401b of the fifth sprocket 140b, the sixth through holes 1302b of the sixth gasket 130b, the fourth assembly holes 12012b of the inner ring 1201b of the fourth sprocket 120b, and the fifth gasket 1 10b, the third assembly holes 10012b of the inner ring 1001b of the third sprocket 100b, and the fourth through holes 92b of the fourth gasket 90b, and screwed into the screw holes 712b of the second sprocket 70b, so that the fourth gasket 90b, the third sprocket 100b, the fifth gasket 110b, the fourth sprocket 120b, the sixth gasket 130b, the fifth sprocket 140b, the seventh gasket 150b, the sixth sprocket 160b, the eighth gasket 170b and the seventh sprocket 180b are fastened to the second sprocket 70b.
應注意的是,第四墊片90b、第三鏈輪100b、第五墊片110b、第四鏈輪120b、第六墊片130b、第五鏈輪140b、第七墊片150b、第六鏈輪160b、第八墊片170b及第七鏈輪180b並不限於由螺柱190b固定於第二鏈輪70b。在其他實施例中,第四墊片、第三鏈輪、第五墊片、第四鏈輪、第六墊片、第五鏈輪、第七墊片、第六鏈輪、第八墊片及第七鏈輪可由鉚釘固定於第二鏈輪。此外,第四墊片、第三鏈輪、第五墊片、第四鏈輪、第六墊片、第五鏈輪、第七墊片、第六鏈輪、第八墊片及第七鏈輪可不固定於第二鏈輪,而可省略螺柱或鉚釘。 It should be noted that the fourth shim 90b, the third sprocket 100b, the fifth shim 110b, the fourth sprocket 120b, the sixth shim 130b, the fifth sprocket 140b, the seventh shim 150b, the sixth sprocket 160b, the eighth shim 170b and the seventh sprocket 180b are not limited to being fixed to the second sprocket 70b by the stud 190b. In other embodiments, the fourth shim, the third sprocket, the fifth shim, the fourth sprocket, the sixth shim, the fifth sprocket, the seventh shim, the sixth sprocket, the eighth shim and the seventh sprocket may be fixed to the second sprocket by rivets. In addition, the fourth shim, the third sprocket, the fifth shim, the fourth sprocket, the sixth shim, the fifth sprocket, the seventh shim, the sixth sprocket, the eighth shim and the seventh sprocket may not be fixed to the second sprocket, and the studs or rivets may be omitted.
第八鏈輪200b具有多個內花鍵齒2001b,第八鏈輪200b的這些內花鍵齒2001b用以直接安裝於自行車輪轂的多個齒槽。第八鏈輪200b的齒數例如為13齒。 The eighth sprocket 200b has a plurality of internal spline teeth 2001b, and these internal spline teeth 2001b of the eighth sprocket 200b are used to be directly mounted on a plurality of tooth grooves of a bicycle wheel hub. The number of teeth of the eighth sprocket 200b is, for example, 13.
第九鏈輪210b具有多個內花鍵齒2101b,第九鏈輪210b的這些內花鍵齒2101b用以直接安裝於自行車輪轂的多個齒槽。第九鏈輪210b的齒數例如為11齒。 The ninth sprocket 210b has a plurality of internal spline teeth 2101b, and these internal spline teeth 2101b of the ninth sprocket 210b are used to be directly mounted on a plurality of tooth grooves of a bicycle wheel hub. The number of teeth of the ninth sprocket 210b is, for example, 11.
根據上述實施例所揭露的自行車後飛輪,藉由第一墊片連接於最大鏈輪且位於第一鏈輪及最大鏈輪之間,及這些緊固件分別穿過第一墊片的這些第一通孔及第一鏈輪的這些第一組裝孔,而將最大鏈輪、第一墊片及第一鏈輪彼此緊固,可使最大鏈輪、第一墊片及第一鏈輪整體有足夠的結構強度,以避免鏈條在最大鏈輪或第一鏈輪上移動時造成該鏈輪晃動的情形。 According to the bicycle rear flywheel disclosed in the above embodiment, the first gasket is connected to the largest sprocket and is located between the first sprocket and the largest sprocket, and the fasteners pass through the first through holes of the first gasket and the first assembly holes of the first sprocket respectively, so that the largest sprocket, the first gasket and the first sprocket are fastened to each other, so that the largest sprocket, the first gasket and the first sprocket as a whole have sufficient structural strength to prevent the sprocket from shaking when the chain moves on the largest sprocket or the first sprocket.
此外,緊固件的中心至自行車後飛輪的轉動軸線的距離至少為45.75mm,可讓緊固件將最大鏈輪、第一墊片及第一鏈輪彼此緊固的位置足夠遠離自行車後飛輪的轉動軸線,而使最大鏈輪、第一墊片及第一鏈輪整體的結構強度能進一步地增強。 In addition, the distance from the center of the fastener to the rotation axis of the rear flywheel of the bicycle is at least 45.75 mm, so that the position where the fastener fastens the largest sprocket, the first spacer and the first sprocket to each other is far enough away from the rotation axis of the rear flywheel of the bicycle, so that the overall structural strength of the largest sprocket, the first spacer and the first sprocket can be further enhanced.
雖然本發明以前述之較佳實施例揭露如上,然其並非用以限定本發明,任何熟習相像技藝者,在不脫離本發明之精神和範圍內,當可作些許之更動與潤飾,因此本發明之專利保護範圍須視本說明書所附之申請專利範圍所界定者為準。 Although the present invention is disclosed as above with the aforementioned preferred embodiment, it is not used to limit the present invention. Anyone familiar with similar techniques can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of patent protection of the present invention shall be subject to the scope of the patent application attached to this specification.
10:最大鏈輪 20:第一墊片 30:次大鏈輪 40:第二墊片 50:第一鏈輪 60:緊固件 70:第三墊片 80:第二鏈輪 90:第四墊片 100:第三鏈輪 110:第五墊片 120:第四鏈輪 130:螺柱 140:第六墊片 160:第六鏈輪 170:第七鏈輪 W1,W2,W3,W4:寬度 C:中心 A:軸線 T:距離 10: Largest sprocket 20: First shim 30: Second largest sprocket 40: Second shim 50: First sprocket 60: Fastener 70: Third shim 80: Second sprocket 90: Fourth shim 100: Third sprocket 110: Fifth shim 120: Fourth sprocket 130: Stud 140: Sixth shim 160: Sixth sprocket 170: Seventh sprocket W1,W2,W3,W4: Width C: Center A: Axis T: Distance
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US20120225745A1 (en) | 2011-03-01 | 2012-09-06 | Shimano Inc. | Bicycle sprocket assembly |
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US20120225745A1 (en) | 2011-03-01 | 2012-09-06 | Shimano Inc. | Bicycle sprocket assembly |
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