CN2317165Y - Three-speed speed variator in rear axle for bicycle - Google Patents
Three-speed speed variator in rear axle for bicycle Download PDFInfo
- Publication number
- CN2317165Y CN2317165Y CN 98223213 CN98223213U CN2317165Y CN 2317165 Y CN2317165 Y CN 2317165Y CN 98223213 CN98223213 CN 98223213 CN 98223213 U CN98223213 U CN 98223213U CN 2317165 Y CN2317165 Y CN 2317165Y
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- China
- Prior art keywords
- ratchet
- group
- rear axle
- gear
- speed
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- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
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Abstract
The utility model is composed of a gear roller set of a rear axle, a planetary gear set, an internal gear set, a left ratchet wheel set, a casing set and a driving set, forming three-level speed change, wherein, the gear roller set of the rear axle comprises a gear roller of the rear axle and a central gear arranged at the central position of the gear roller of the rear axle; the planetary gear set comprises a planetary tooth shaft, four planetary gears arranged at the intermediate position of the planetary gear set and a pair of ratchet pawls arranged at the left end of the planetary gear set; the ratchet pawls are fixed by a pin shaft of a ratchet pawl. When a chain wheel drives the driving set by dynamic force to rotate, the dynamic force is converted by the expanding or the closing transmission force of the ratchet pawls 19, 36 and the moving position of a speed regulating sleeve to be input into the internal gear set or the planetary gear set, and then the expanding or the closing transmission force of the ratchet pawls 22, 17 output the dynamic force to the left ratchet wheel set and the casing set to rotate, generating different rotary speed.
Description
The utility model relates to bicycle, three-speed gear in particularly a kind of bicycle rear axle.
Bicycle speed-varying unit roughly is divided into internal speed changer and outer change-speed box two big classes at present: outer change-speed box adopts the multi-chain gear wheel transmission more, exposing of gear wheel on it is set foot on, chain, sprocket wheel etc., after exposing to the sun and rain, get rusty easily, wear and tear, speed governing is malfunctioning easily, out of supply, chain and sprocket wheel very easily pollute, foreign material also easily are involved in wherein, and divided skirt also easily bumps dirty, and integral body takes up room greatly; Internal speed changer takes up room little, and transmission group is hermetically sealed, and chain, sprocket wheel are sealed by chain cover, resistance to abrasion height, long service life, good looking appearance.But, internal speed variator for cycle rear axle carries out speed change according to planetary differential principle mostly at present, move back and forth castellated structure as employing, its speed change difficulty, timely speed change when quiescence and high-speed cruising, wearing and tearing have neutral gear, easily cause danger when restarting easily, and overall volume is big.
The purpose of this utility model provides three-speed gear in a kind of improved bicycle rear axle, and it is with disjunctor unit construction form, and is totally-enclosed, easy accessibility.
Three-speed gear comprises sprocket wheel, chain and chain cover in a kind of bicycle rear axle described in the utility model, and it is made up of rear axle discaling roll group, compound planet gear, internal tooth wheels, left ratchet group, shell group and driving unit six big assemblies, forms three class gear shift;
Described rear axle discaling roll group comprises a rear axle discaling roll, an and sun gear of installing in the center of rear axle discaling roll, right-hand member both sides at the rear axle discaling roll are respectively equipped with the groove that can put the speed governing steel wire, two ends at the rear axle discaling roll are respectively equipped with screw thread, can and piece together mother by the dog nut change-speed box is fixed on its certain position;
Described compound planet gear comprises a planet tooth axle, four planetary wheels of installing in the middle part of compound planet gear, and a pair of left end at compound planet gear install by the fixing ratchet of ratchet bearing pin, four planetary wheels are fixed by planet tooth axle, in the internal diameter of the right-hand member of compound planet gear, be provided with ratchet slot, when the support of the ratchet of compound planet gear right-hand member is in this ratchet slot, compound planet gear is rotated, the opening or closedly control of the ratchet of compound planet gear left end by ratchet spring;
Described internal tooth wheels comprise an inner gear in the left end installation, and a pair of ratchet of installing in the pawl slot of the set both sides of right-hand member, and the centre of large internal gear group is provided with ratchet slot, and ratchet is fixed by bearing pin, and it are opened or closure by ratchet spring;
Described left ratchet group comprises ratchet, is respectively equipped with inside and outside ratchet slot on the inside and outside footpath of the right-hand member of left ratchet group, is provided with the shot groove of placing shot in the left end centre hole of left ratchet group, on the shot groove dust protecting cap is installed;
Left and right two ends of described shell group are fastened with the spoke floral disc that bicycle wire can be installed respectively, inwall in the shell group is provided with ratchet slot, left end in the shell group is provided with ratchet, this ratchet can embed in the outer ratchet slot of left ratchet group, shell group and left ratchet group are linked together, be convenient to dismounting simultaneously, be provided with the shot groove of placement shot at the right-hand member inwall of shell group;
Described driving unit comprise two pairs left end install by the fixing ratchet of bearing pin, opening or closure of ratchet spring control ratchet, the right-hand member of driving unit is equipped with by the fixing sprocket wheel of jump ring, be provided with the shot groove of placing shot in the right-hand member centre hole of driving unit, on the shot groove dust protecting cap is installed, the centre of driving unit is provided with radially slotted eye and the first speed governing cover is housed, the second speed governing cover is housed in the endoporus, connect by the speed governing link rod, with opening or closure of the ratchet on ratchet on the controlling and driving group and the internal tooth wheels, the shift position of first speed governing cover and second speed governing cover is controlled in the groove of second speed governing cover by the speed governing steel wire hook on the rear axle discaling roll, makes speed changer.
The utlity model has following advantage:
1. overall volume is little, and is in light weight, totally-enclosed, is difficult for polluting long service life.
2. disjunctor unit construction form, disjunctor assembly intensity height, not fragile, compact conformation, each disjunctor assembly rotates with one heart, and is not easy to wear.
3. when running, driving unit and compound planet gear or internal tooth wheels, and ratchet, ratchet slot, first speed governing cover and second speed governing is enclosed within slowly, in, be to rotate together during fast third gear, so it is atomic to wear and tear, main gravity friction is then on gear, as inner gear, planetary wheel and sun gear.First speed governing on the driving unit cover and the second speed governing cover and ratchet all with the driving unit disjunctor, and on driving unit, can slide, it is small to wear and tear.
4. first speed governing cover is connected by the speed governing link rod with the second speed governing cover, and speed governing is convenient, rapid, light and handy, no neutral gear.The utility model adopts plug-type speed governing steel wire, and the second speed governing cover can be followed the driving unit rotation on the speed governing steel wire, have only slight friction between the second speed governing cover and the speed governing steel wire.
5. the groove of the set speed governing steel wire in right-hand member both sides of the sun gear of rear axle discaling roll group, add man-hour than the axle center punching, radially slotted eye is easy for milling spindle, has strengthened the intensity of axle.In addition, six big disjunctor assembly processing are simple, easily manufactured, sound construction, and bearing capacity is big.
6. easy accessibility, six big disjunctor assemblies all are the sleeve type location structure, simple for assembly process, cost is low.
Below in conjunction with accompanying drawing the utility model is elaborated.
Fig. 1 is the structural representation of three-speed gear in a kind of bicycle rear axle.
Fig. 2 is the structural representation of rear axle discaling roll group in the above-mentioned change-speed box.
Fig. 3 is an A-A cutaway view shown in Figure 1.
Fig. 4 is a B-B cutaway view shown in Figure 1.
Referring to Fig. 1 to Fig. 4, three-speed gear comprises sprocket wheel, chain and chain cover in a kind of bicycle rear axle, and it is made up of six big assemblies such as rear axle discaling roll group 1, compound planet gear 2, internal tooth wheels 3, left ratchet group 4, shell group 5 and driving unit 6, forms three class gear shift.
Rear axle discaling roll group 1 comprises a rear axle discaling roll 7, and a sun gear 8 of installing in the center of rear axle discaling roll 7.Be respectively equipped with the groove 10 that to put speed governing steel wire 9 on the right-hand member both sides of rear axle discaling roll 7.Two ends at rear axle discaling roll 7 are respectively equipped with screw thread 11, can and piece together female 13 by dog nut 12 change-speed box is fixed on the certain position of rear axle discaling roll 7.
Compound planet gear 2 comprises the planetary wheels 15 that 14, four on a planet tooth axle is installed in the middle part of compound planet gear 2, and a pair of the left end of compound planet gear 2 install by the fixing ratchet 17 of ratchet bearing pin 16.Four planetary wheels 15 are fixing by planet tooth axle 14, and planetary wheel 15 can arbitrarily rotate.In the internal diameter of the right-hand member of compound planet gear 2, be provided with ratchet slot 18, when ratchet 19 supports of compound planet gear 2 right-hand members are this ratchet slot 18 in, can make compound planet gear 2 rotations.The ratchet 17 of compound planet gear 2 left ends open or closed by ratchet spring 20 controls.
Left side ratchet group 4 comprises ratchet.On the inside and outside footpath of the right-hand member of left ratchet group 4, be respectively equipped with inside and outside ratchet slot 25,26.In the left end centre hole of left ratchet group 4, be provided with the shot groove 28 of placing shot 27, dust protecting cap 29 is installed on the shot groove 28.
The fastening respectively installation of left and right two ends of shell group 5 can be adorned the spoke floral disc 30 of bicycle wire.Inwall in shell group 5 is provided with ratchet slot 31.Left end in shell group 5 is provided with ratchet 32, and this ratchet 32 can embed in the outer ratchet slot 26 of left ratchet group 4, and shell group 5 and left ratchet group 4 are linked together, and is convenient to dismounting simultaneously.Right-hand member inwall in shell group 5 is provided with the shot groove 34 of placing shot 33.
When slow shelves, in the ratchet slot 23 on the ratchet 36 support large internal gear groups 3, driving unit 6 is rotated with speed with internal tooth wheels 3, it is static relatively situation, and the ratchet 22 on the internal tooth wheels 3 is overlapped 42 closures by first speed governing, same ratchet 19 is overlapped 43 closures by second speed governing, so does not have pivoting friction between ratchet 19,22 and first speed governing cover, 42 and second speed governing cover 43.
When middle-grade, ratchet 36 on the driving unit 6 still supports in the ratchet slot 23 on the large internal gear group 3, and in the ratchet slot 31 of ratchet 22 supports on shell group 5, therefore driving unit 6 is rotated with internal tooth wheels 3, shell group 5, and does not have pivoting friction between ratchet 36,22,19 and first speed governing cover, 42 and second speed governing cover 43.
When fast shelves, ratchet 36 supports on the driving unit 6 are in the ratchet slot 18 of compound planet gear 2 right-hand members, driving unit 6 is rotated with speed with compound planet gear 2, and in the ratchet slot 31 of ratchet 22 supports on shell group 5 on the internal tooth wheels 3, therefore internal tooth wheels 3 rotate with speed with shell group 5, do not have pivoting friction between ratchet 19,22 and first speed governing cover, 42 and second speed governing cover 43.
Operation process of the present utility model is as follows:
When power is defeated by chain when driving sprocket wheel 38 and rotating forward, driving unit 6 is also rotated forward, the position of first speed governing this moment cover, 42 and second speed governing cover 43 makes ratchet 22,19 closed and inoperative, have only when ratchet 36 forever supports in ratchet slot 23, internal tooth wheels 3 and driving unit 6 are rotated with speed.Because inner gear 21 is meshed with planetary wheel 15, planetary wheel 15 again with rear axle discaling roll 1 on sun gear 8 engagements, so rotate around sun gear 8, while ratchet 17 forever supports in interior ratchet slot 25, has driven the rotation of left ratchet group 4 and shell group 5.That is to say, when driving unit 6 is rotated, power is inputed to internal tooth wheels 3, and compound planet gear 2 outputting powers rotate shell group 5, the ratio speed of this moment is at a slow speed, i.e. 0.75 deceleration.
When the effector in the bicycle handle bar pulls out speed governing steel wire 9, changed the home position of first speed governing cover, 42 and second speed governing cover 43, ratchet 36 on the driving unit 6 still supports in ratchet slot 23 at this moment, and ratchet 22 is opened and is supportted in ratchet slot 31 by first speed governing cover 42, so driving unit 6 has driven the rotation of internal tooth wheels 3 and shell group 5 when rotating.That is to say that when driving unit 6 is rotated, power is inputed to internal tooth wheels 3 and 5 rotations of shell group, ratio speed at this moment is middling speed, i.e. 1 times of same speed.
As mentioned above, when driving unit 6 is rotated, driven the rotation of internal tooth wheels 3, because of inner gear 21 has driven the rotation of compound planet gear 2 again, and ratchet 17 power transmissions rotate left ratchet group 4 and shell group 5 in interior ratchet slot 25, at this moment be (0.75 times) at a slow speed, be slower than mid ranger and inoperative.
When effector was pulled out speed governing steel wire 9 more again, first speed governing cover, 42 and second speed governing cover 43 had changed the position again, makes ratchet 19 open and support in ratchet slot 18.Therefore when driving unit 6 was rotated, compound planet gear 2 had driven the rotation of internal tooth wheels 3, and ratchet 22 supports make shell group 5 rotate in ratchet slot 31.That is to say that when driving unit 6 is rotated, power is inputed to compound planet gear 3, and internal tooth wheels 3 outputting powers rotate shell group 5, the ratio speed of this moment is fast, i.e. 1.33 multiplication speed.
As mentioned above, when driving unit 6 is rotated, compound planet gear 2 is rotated, because forever supportting, ratchet 17 in interior ratchet slot 25, can drive 5 rotations of shell group, the ratio speed of this moment is 1: 1 times, so mid ranger is much more slowly than the fast speed rotating speed, so ratchet 17 skids and inoperative.
Claims (1)
1. three-speed gear in the bicycle rear axle, it comprises sprocket wheel, chain and chain cover, it is characterized in that, it is made up of rear axle discaling roll group, compound planet gear, internal tooth wheels, left ratchet group, shell group and driving unit six big assemblies, the formation three class gear shift;
Described rear axle discaling roll group comprises a rear axle discaling roll, an and sun gear of installing in the center of rear axle discaling roll, right-hand member both sides at the rear axle discaling roll are respectively equipped with the groove that can put the speed governing steel wire, two ends at the rear axle discaling roll are respectively equipped with screw thread, can and piece together mother by the dog nut change-speed box is fixed on its certain position;
Described compound planet gear comprises a planet tooth axle, four planetary wheels of installing in the middle part of compound planet gear, and a pair of left end at compound planet gear install by the fixing ratchet of ratchet bearing pin, four planetary wheels are fixed by planet tooth axle, in the internal diameter of the right-hand member of compound planet gear, be provided with ratchet slot, when the support of the ratchet of compound planet gear right-hand member is in this ratchet slot, compound planet gear is rotated, the opening or closedly control of the ratchet of compound planet gear left end by ratchet spring;
Described internal tooth wheels comprise an inner gear in the left end installation, and a pair of ratchet of installing in the pawl slot of the set both sides of right-hand member, and the centre of large internal gear group is provided with ratchet slot, and ratchet is fixed by bearing pin, and it are opened or closure by ratchet spring;
Described left ratchet group comprises ratchet, is respectively equipped with inside and outside ratchet slot on the inside and outside footpath of the right-hand member of left ratchet group, is provided with the shot groove of placing shot in the left end centre hole of left ratchet group, on the shot groove dust protecting cap is installed;
Left and right two ends of described shell group are fastened with the spoke floral disc that bicycle wire can be installed respectively, inwall in the shell group is provided with ratchet slot, left end in the shell group is provided with ratchet, this ratchet can embed in the outer ratchet slot of left ratchet group, shell group and left ratchet group are linked together, be convenient to dismounting simultaneously, be provided with the shot groove of placement shot at the right-hand member inwall of shell group;
Described driving unit comprise two pairs left end install by the fixing ratchet of bearing pin, opening or closure of ratchet spring control ratchet, the right-hand member of driving unit is equipped with by the fixing sprocket wheel of jump ring, be provided with the shot groove of placing shot in the right-hand member centre hole of driving unit, on the shot groove dust protecting cap is installed, the centre of driving unit is provided with radially slotted eye and the first speed governing cover is housed, the second speed governing cover is housed in the endoporus, connect by the speed governing link rod, with opening or closure of the ratchet on ratchet on the controlling and driving group and the internal tooth wheels, the shift position of first speed governing cover and second speed governing cover is controlled in the groove of second speed governing cover by the speed governing steel wire hook on the rear axle discaling roll, makes speed changer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98223213 CN2317165Y (en) | 1998-02-12 | 1998-02-12 | Three-speed speed variator in rear axle for bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98223213 CN2317165Y (en) | 1998-02-12 | 1998-02-12 | Three-speed speed variator in rear axle for bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2317165Y true CN2317165Y (en) | 1999-05-05 |
Family
ID=33974382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98223213 Expired - Fee Related CN2317165Y (en) | 1998-02-12 | 1998-02-12 | Three-speed speed variator in rear axle for bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2317165Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106394799A (en) * | 2015-07-31 | 2017-02-15 | 通用汽车环球科技运作有限责任公司 | Internal gear hub with selectable fixed gear for electric bike regen |
| CN106394798A (en) * | 2015-07-31 | 2017-02-15 | 通用汽车环球科技运作有限责任公司 | Mid drive electric bicycle powerflow with planetary gear overdrive and stepped pinion planetary |
| CN109018181A (en) * | 2017-06-12 | 2018-12-18 | 枣庄宝武机电科技开发有限公司 | Bicycle magnet control formula three keeps off internal speed changing device |
| CN110030334A (en) * | 2019-01-21 | 2019-07-19 | 王世峰 | The small-sized speed changer of variable diameter clutch |
-
1998
- 1998-02-12 CN CN 98223213 patent/CN2317165Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106394799A (en) * | 2015-07-31 | 2017-02-15 | 通用汽车环球科技运作有限责任公司 | Internal gear hub with selectable fixed gear for electric bike regen |
| CN106394798A (en) * | 2015-07-31 | 2017-02-15 | 通用汽车环球科技运作有限责任公司 | Mid drive electric bicycle powerflow with planetary gear overdrive and stepped pinion planetary |
| CN106394798B (en) * | 2015-07-31 | 2019-02-19 | 通用汽车环球科技运作有限责任公司 | Electric bicycle dynamical system |
| CN109018181A (en) * | 2017-06-12 | 2018-12-18 | 枣庄宝武机电科技开发有限公司 | Bicycle magnet control formula three keeps off internal speed changing device |
| CN110030334A (en) * | 2019-01-21 | 2019-07-19 | 王世峰 | The small-sized speed changer of variable diameter clutch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |