WO2014117550A1 - Ensemble plateau de bicyclette - Google Patents

Ensemble plateau de bicyclette Download PDF

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Publication number
WO2014117550A1
WO2014117550A1 PCT/CN2013/086302 CN2013086302W WO2014117550A1 WO 2014117550 A1 WO2014117550 A1 WO 2014117550A1 CN 2013086302 W CN2013086302 W CN 2013086302W WO 2014117550 A1 WO2014117550 A1 WO 2014117550A1
Authority
WO
WIPO (PCT)
Prior art keywords
sprocket
cylinder
bicycle
external thread
spline
Prior art date
Application number
PCT/CN2013/086302
Other languages
English (en)
Chinese (zh)
Inventor
郑汉信
贺新星
吴建华
Original Assignee
大行科技(深圳)有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 大行科技(深圳)有限公司 filed Critical 大行科技(深圳)有限公司
Publication of WO2014117550A1 publication Critical patent/WO2014117550A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M9/00—Transmissions characterised by use of an endless chain, belt, or the like
    • B62M9/04—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio
    • B62M9/06—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like
    • B62M9/10—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like
    • B62M9/105—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like involving front sprocket chain-wheels engaged by the chain, belt or the like

Definitions

  • the utility model relates to a bicycle sprocket assembly constituting a part of a bicycle shifting device. Background technique
  • the bicycle currently includes a frame, front and rear wheels, a foot pedal for rotating one or more front sprockets, a plurality of rear sprockets mounted on the rear wheel, and a connecting front sprockets and a plurality of rear sprockets.
  • One of the chains One of the chains.
  • the shifting of the bicycle is generally achieved by a front derailleur mounted adjacent the front sprocket and a rear derailleur mounted adjacent the rear sprocket by slidably moving the chain to separate rear sprockets.
  • Chinese Patent Publication No. 200610073341. 7 provides a sprocket assembly for a bicycle by separately mounting sprocket wheels of different sizes on two pipe members, and threading the two pipe members through a thread, and providing a transition sprocket at the joint, ⁇ With this kind of mounting structure, it is possible to install a sprocket with a small diameter or a small number of chain teeth on the small pipe fitting, but the structure is complicated and the installation procedure is many. Since the two pipe fittings need to be installed, the precision is not easy to control, and the sprocket is concentric after installation. The degree is not good enough, which can cause the actual value in the shifting to be different from the theoretical value.
  • each sprocket has a chain slat
  • the distance between the sprocket and the sprocket is between the specified size, so each sprocket must be strictly positioned during assembly.
  • the first tube member and the second tube member are screwed together, so that the relative position between the first tube member and the second tube member cannot be fixed during the assembly process, so that each mechanism needs to be accurately positioned by using other mechanisms. It is not possible to ensure the distance between the sprocket and the adjacent sprocket on the other pipe by the relative position of the sprocket on the pipe fitting.
  • the utility model provides a bicycle sprocket assembly with simple structure, convenient installation, good sprocket concentricity, stable shifting speed and low production cost.
  • a bicycle sprocket assembly comprising a tubular member having a first tubular body and a second tubular body, a first sprocket set and a transition sprocket non-rotatably mounted on the first cylindrical body, and non-rotatably mounted on the second cylindrical body
  • Second sprocket set and connected to the second cylinder a locking device at one end of the body, the transition sprocket is disposed between the first sprocket set and the second sprocket set, a ratchet is connected to one end of the first cylinder, a baffle is arranged in the middle of the ratchet, and one end of the ratchet is provided
  • There is a first external thread portion and one end of the first cylinder is provided with a first internal thread engageable with the first external thread portion.
  • the first external thread portion and the first internal thread are both right-handed threads.
  • the first cylinder and the second cylinder of the pipe member are integrally formed.
  • the outer peripheral surface of the first cylinder is provided with a first spline group, the inner surface of the first sprocket set and the transition sprocket cooperates with the outer peripheral surface of the first cylinder, and the outer surface of the outer surface of the second cylinder is provided
  • the second spline group, the inner surface of the second sprocket set mates with the outer peripheral surface of the second barrel.
  • each spline of the first spline group is different, and the shape of each spline of the second spline group is different.
  • the first sprocket set includes at least a first sprocket, and the first sprocket includes a radially extending first sprocket portion, a first tubular connecting portion extending on one side of the first sprocket portion, and at the first a first groove that is open on the other side of the sprocket, the second sprocket set includes at least a second sprocket, and the second sprocket includes a second sprocket portion and a second sprocket portion that extend radially a second tubular connecting portion extending at one side, the transition sprocket including a third sprocket portion extending radially, a third tubular connecting portion extending on one side of the third sprocket portion, and another a third groove of the side opening, the first tubular connecting portion of the first sprocket is limited by the baffle, and the third tubular connecting portion of the transition sprocket is pressed against the first
  • the locking device is a locking structure provided with a flange and a second external thread portion, and the second cylinder is provided with a second internal thread that engages with the second external thread portion.
  • the locking device is a lock nut provided with a third internal thread
  • the second cylinder is provided with a third external thread that engages with the third internal thread
  • the utility model has the beneficial effects of the utility model: the utility model improves the strength of the pipe fitting by integrally molding the first cylinder body and the second cylinder body of the pipe fitting, and is beneficial to improving the concentricity of the two in the forming process, and each chain during the shifting
  • the switching between the wheels is smoother, the assembly of each sprocket is simple, and it is suitable for mass production, which can greatly reduce the production cost.
  • FIG. 1 is a front elevational view of a bicycle sprocket assembly of the present invention
  • Figure 2 is a cross-sectional view of the A-A section of Figure 1;
  • FIG. 3 is a schematic exploded view of the bicycle sprocket assembly of the present invention.
  • FIG. 4 is a schematic exploded view of another embodiment of the bicycle sprocket assembly of the present invention. detailed description
  • the bicycle sprocket assembly includes: a tubular member 1 having a first cylinder 11 and a second cylinder 12, a first sprocket set non-rotatably sleeved on the first cylinder 11 and a transition sprocket 3, a second sprocket set non-rotatably sleeved on the second cylinder 12, a ratchet 5 connected to one end of the first cylinder 11, and a locking device connected to the end of the second cylinder 12
  • the first cylinder 11 and the second cylinder 12 are integrally formed, and the lengths of the first cylinder 11 and the second cylinder 12 are determined at the time of molding, and the thickness of each sprocket is constant, which is convenient.
  • a baffle 51 is disposed in the middle of the ratchet 5, and one end of the ratchet 5 is provided with a first external thread portion 52, and the other end is provided with a pawl 53.
  • the outer peripheral surface of the first cylinder 11 is provided with a first spline group 13 , each spline shape of the first spline group 13 is different, and the outer surface of the second cylinder 12 is provided with a second spline.
  • Each of the splines of the group 14 and the second spline group 14 has a different shape, and one end of the first cylinder 11 is provided with a first internal thread engageable with the first external thread portion 51, and the second cylinder 12
  • a second internal thread 15 is provided at one end.
  • the first sprocket set includes only the first sprocket 2, and the first sprocket 2 includes a first sprocket portion 21 extending radially, and a first sprocket portion 21 - a first tubular portion extending laterally a connecting portion 22 and a first groove 23 opening on the other side of the first sprocket portion 21, the inner surface of the first tubular connecting portion 22 is provided with a first spline groove group 24, and each flower of the first spline groove group 24
  • the key grooves are respectively in one-to-one correspondence with the splines of the first spline group 13 , and when the first spline groove group 24 is aligned with the first spline group 13 , the first sprocket 2 can be sleeved on the first barrel 11 . on.
  • the transition sprocket 3 includes a third sprocket portion 31 extending radially, a third sprocket portion 31 - a third tubular connecting portion 32 extending laterally, and a third recess opening at the other side of the third sprocket portion 31 a groove 33, a third spline groove group 34 is disposed on an inner surface of the third tubular connecting portion 32, and each spline groove of the third spline groove group 34 corresponds to each spline of the first spline group 13
  • the transition sprocket 3 is sleeved on the first cylinder 11
  • the third tubular connecting portion 32 is received in the first recess 23 and the first recess 23 is tightened.
  • the second sprocket assembly includes only the second sprocket 4, and the second sprocket 4 includes a second sprocket portion 41 extending radially and a second tubular connection extending from one side of the second sprocket portion.
  • a second splined groove set 43 is disposed on the inner surface of the second tubular connecting portion 42 , and each spline of the second splined groove set 43 respectively corresponds to each spline of the second spline set 14 .
  • the locking device is a locking structure 6 provided with a flange 61 and a second external thread portion 62.
  • the second external thread portion 62 is engaged with the second internal thread 15 at the end of the second cylinder 12, and the flange 61 bears against the second sprocket 4, and when the first sprocket 2 is fitted over the first cylinder 11, the baffle 51
  • the first tubular connecting portion 22 is limited, so that the first sprocket 2, the transition sprocket 3 and the second sprocket 4 are connected end to end, and are fixed in the axial direction, and the structure is stable and safe to use.
  • Figure 4 is another embodiment of the present invention, which differs from the previous embodiment in that the locking device is a lock nut 7, and the lock nut 7 is provided with a third internal thread 71, a second cylinder One end of the body 12 is provided with a third external thread that meshes with the third internal thread 71, and the lock nut 7 and the baffle 51 are axially fixed to the first sprocket 1, the transition sprocket 3, and the second sprocket 4.
  • the bicycle sprocket assembly of the present invention is mounted on the second cylinder body 12 by mounting the first sprocket set and the transition sprocket in the first cylinder body 11, and is closely arranged on the pipe member 1, the pipe member
  • the front and rear of the 1 respectively realize the positioning and fastening of each sprocket through the baffle 51 and the locking mechanism 6 on the ratchet 5, which not only meets the general installation requirements of the sprocket, but also solves the problem that the sprocket sprocket can not be used without using the hub.
  • the structure is more compact. This type of connection has lower requirements on the teeth of each sprocket. It can be formed by stamping. Compared with forging, the production is more convenient, efficient and economical. Cost of production.
  • the bicycle sprocket assembly of the present invention does not require any auxiliary positioning tools when assembled, so that the assembly of each sprocket is simple and suitable for mass production, which can greatly reduce the production cost.
  • the first external thread portion (52) and the first internal thread are both right-handed threads.
  • the ratchet supports the pawl mounted on the bicycle ratchet, the first external thread portion and the first The internal thread is in a tightened state, and the sprocket assembly device drives the rear wheel of the bicycle to advance.
  • the pedal of the bicycle is rotated, the ratchet presses the pawl, and the ratchet and the pawl are in a "flying" state, due to the first external thread portion.
  • the first internal thread is installed, it is tightened, so even if the pedal of the bicycle is rotated, the ratchet and the tube are simultaneously rotated, and the first external thread portion and the first internal thread are still tightened to ensure the safety during the bicycle riding.

Abstract

La présente invention concerne un ensemble plateau de bicyclette comprenant un raccord (1) pourvu d'un premier corps de cylindre (11) et d'un second corps de cylindre (12), un premier jeu de plateau et un plateau de transition (3) qui sont montés sur le premier corps de cylindre (11) dans un mode non rotatif, un second jeu de plateau monté sur le second corps de cylindre (12) dans un mode non rotatif et un dispositif de blocage raccordé à une extrémité du second corps de cylindre (12), le plateau de transition (3) étant disposé entre le premier jeu de plateau et le second jeu de plateau, une extrémité du premier corps de cylindre est raccordée à une roue à rochet (5), la partie centrale de la roue à rochet est pourvue d'un déflecteur (5), une extrémité de la roue à rochet est pourvue d'une partie de filet externe, et une extrémité du premier corps de cylindre est pourvue de premiers filets internes pouvant se mettre en prise avec la première partie de filet externe. L'ensemble plateau de bicyclette présente une résistance élevée et un faible coût de production.
PCT/CN2013/086302 2013-01-30 2013-10-31 Ensemble plateau de bicyclette WO2014117550A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN 201320053084 CN203111436U (zh) 2013-01-30 2013-01-30 自行车链轮组件
CN201320053084.6 2013-01-30

Publications (1)

Publication Number Publication Date
WO2014117550A1 true WO2014117550A1 (fr) 2014-08-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2013/086302 WO2014117550A1 (fr) 2013-01-30 2013-10-31 Ensemble plateau de bicyclette

Country Status (2)

Country Link
CN (1) CN203111436U (fr)
WO (1) WO2014117550A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3611404A1 (fr) * 2018-08-14 2020-02-19 Röchling Industrial Xanten GmbH Pignon d'entraînement à chaîne
DE102019107111A1 (de) * 2019-03-20 2020-09-24 Shimano Inc. Kettenradstützkörper; fahrradnabenanordnung und antriebsstrang

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203111436U (zh) * 2013-01-30 2013-08-07 大行科技(深圳)有限公司 自行车链轮组件
IT201900020502A1 (it) * 2019-11-06 2021-05-06 Campagnolo Srl Sotto-assieme corpo porta-pignoni e pacco pignoni per una ruota posteriore di bicicletta, ghiera di fissaggio di tale sotto-assieme e metodo per il fissaggio di un pacco pignoni ad un corpo porta-pignoni

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1517267A (zh) * 2003-01-17 2004-08-04 ��ʽ���絺Ұ 用于多链轮组件中的具有侧向凸块的自行车链轮
CN102079360A (zh) * 2009-11-30 2011-06-01 株式会社岛野 自行车链轮支撑组件
US20110220449A1 (en) * 2010-03-09 2011-09-15 Joy Industrial Co., Ltd. Bicycle hub assembly with two bearings
CN203111436U (zh) * 2013-01-30 2013-08-07 大行科技(深圳)有限公司 自行车链轮组件

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1517267A (zh) * 2003-01-17 2004-08-04 ��ʽ���絺Ұ 用于多链轮组件中的具有侧向凸块的自行车链轮
CN102079360A (zh) * 2009-11-30 2011-06-01 株式会社岛野 自行车链轮支撑组件
US20110220449A1 (en) * 2010-03-09 2011-09-15 Joy Industrial Co., Ltd. Bicycle hub assembly with two bearings
CN203111436U (zh) * 2013-01-30 2013-08-07 大行科技(深圳)有限公司 自行车链轮组件

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3611404A1 (fr) * 2018-08-14 2020-02-19 Röchling Industrial Xanten GmbH Pignon d'entraînement à chaîne
DE102019107111A1 (de) * 2019-03-20 2020-09-24 Shimano Inc. Kettenradstützkörper; fahrradnabenanordnung und antriebsstrang

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