CN2240637Y - Flexible gearing coaxial speed-changing device - Google Patents
Flexible gearing coaxial speed-changing device Download PDFInfo
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- CN2240637Y CN2240637Y CN 95225908 CN95225908U CN2240637Y CN 2240637 Y CN2240637 Y CN 2240637Y CN 95225908 CN95225908 CN 95225908 CN 95225908 U CN95225908 U CN 95225908U CN 2240637 Y CN2240637 Y CN 2240637Y
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Abstract
The utility model relates to a flexible gearing coaxial speed-changing device which comprises an outer shell, an output wheel, a drive shaft, a drive wheel, a driven shaft and a driven wheel. More than three cams are sheathed on the drive shaft, and a pair of circular upper and lower clamping plates is sheathed on the upper and lower shoulder tables of each cam. One drive wheel is clamped on each pair of clamping plates in a reserved gap, and the surface of the clamping plate is provided with more than six pins for connecting three pairs of clamping plates in an equant mode. One detent is arranged between every two pins to form three pairs of detents, and the small head of each pair of detents can be movably embedded in the groove of each cam. The utility model has the advantages of compact structure, convenient speed change and reliable drive.
Description
The utility model relates to manpower transportation and manpower land and water recreation equipment, the coaxial speed change gear of particularly a kind of usefulness flexible drive thereon.
The speed changer that is used at present on the bicycle roughly has two kinds: a kind of is to rely on gear engagement to change velocity ratio; Another kind is to stir chain with group chain device to carry out speed governing.The disadvantage of these two kinds of speed change gears is that it is bad that the former meshes back-geared force-bearing situation, latter's serious wear and cost of production height.
The purpose of this utility model provides the coaxial speed change gear of a kind of improved flexible drive, and its speed change is convenient, and is stressed even, reliable transmission, and it is little to wear and tear, and cost of production is low, and is applied widely.
The coaxial speed change gear of a kind of flexible drive described in the utility model, it comprises a shell, one driving shaft, output wheel on one driving shaft that is installed in outside the shell, be installed in cam on the driving shaft more than three together with driving wheel, one driven axle, and be installed in driven wheel on the driven axle more than three; Described shell comprises the fore shell and a bonnet of a shape of hood; Be set with on the described driving shaft and be with first cam, three of second cam and the 3rd cam with overhead cam, on each cam, on the following shoulder a pair of circle of suit on, die holder, on every pair of clamping plate, clamp a driving wheel with leaving the space, corresponding with first cam is first driving wheel, corresponding with second cam is second driving wheel, corresponding with the 3rd cam is the 3rd driving wheel, five equilibrium is equipped with on circular clamping plate surface, on axially being positioned at every pair, die holder gap and axial six above pins that connect three pairs of clamping plate, each pin outer surface suit spacer, the outer coiling one of each spacer flies silk, the ratchet that can swing is housed between the pin of per two circular five equilibriums, promptly on being equipped with between every pair of clamping plate by the link connection, two a pair of ratchets putting relatively of die holder, just between first cam and first driving wheel, first pair of ratchet is installed between the die holder, on between second cam and second driving wheel, second pair of ratchet is installed between the die holder, on between the 3rd cam and the 3rd driving wheel, the 3rd pair of ratchet is installed between the die holder, the position of the every pair of ratchet same angle that staggers, the microcephaly of every pair of ratchet embeds cam groove movably, and by an elasticity cramping that flies that is wound on the pin; Inboard near fore shell on the described driving shaft is set with a retaining wheel, by the screw connection one support toothholder is housed in the fore shell inboard, the one retaining support tooth that is connected with a joggle with retaining wheel is housed in support toothholder inboard, a hinged pressure reduction spring on retaining support tooth, the long-armed and galianconism of pressure reduction spring respectively place retaining support tooth one side; Chain wheel basement on the described output wheel connects with first driving wheel by screw thread; Described driven axle is the eccentric shaft of a can regulate flexible element tightness, and first driven wheel, second driven wheel and the 3rd driven wheel are housed on the eccentric shaft; Described flexible element has more than three, and each is with first driving wheel and first driven wheel, second driving wheel and second driven wheel, the 3rd driving wheel and the hinge joint of the 3rd driven wheel.
The utility model compact structure, speed change is convenient, and reliable transmission is convenient to produce in batches, and cost is lower, and is applied widely.
Below in conjunction with accompanying drawing the utility model is elaborated.
Fig. 1 is the structural representation of the coaxial speed change gear of a kind of flexible drive, and wherein right half part is the C-C sectional view of Fig. 2.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is that the B of Fig. 1 is to view.
Referring to Fig. 1, Fig. 2 and Fig. 3, the coaxial speed change gear of a kind of flexible drive comprises a shell 1, one driving shaft 2, output wheel 3 on one driving shaft that is installed in outside the shell, be installed in cam on the driving shaft more than three together with driving wheel, one driven axle 4, and be installed in driven wheel on the driven axle more than three.
Shell 1 is equipped with the fore shell 5 and a bonnet 6 of a shape of hood.
Be positioned at suit first cam 7, second cam 8 and the 3rd cam 9 on the driving shaft 2 of fore shell 5.Each cam all has last shoulder and following shoulder, the punch holder 10 of a pair of circle of suit and die holder 11 on the upper and lower shoulder of each cam.Clamp a driving wheel on every pair of clamping plate, corresponding with first cam 7 is first driving wheel 12 with leaving the space, and corresponding with second cam 8 is second driving wheel 13, and corresponding with the 3rd cam 9 is the 3rd driving wheel 14.Six pins 15 of five equilibrium are equipped with on circular clamping plate surface, and these six pins 15 axially are positioned at the gap of three pairs of punch holders 10 and die holder 11, and axially connect this three pairs of clamping plate.Each pin 15 outer surface suit spacer 16, each spacer 16 outer coiling one flies silk 17.Two relative pins 15 pin that partners promptly nails in pair of pin a pair of silk that flies is housed, and every pair flies silk and is arranged in wherein a pair of clamping plate.The ratchet that can swing 18 is housed between the pin 15 of per two circular five equilibriums, promptly on being equipped with between every pair of clamping plate by the link connection, two ratchets that partner 18 putting relatively of die holder, just between first cam 7 and first driving wheel 12, first pair of ratchet 19 is installed between the die holder, on between second cam 8 and second driving wheel 13, second pair of ratchet 20 is installed between the die holder, on between the 3rd cam 9 and the 3rd driving wheel 14, the 3rd pair of ratchet 21 is installed, the position of the every pair of ratchet same angle that staggers between the die holder.The microcephaly 22 of every pair of ratchet embeds cam groove movably, and by 17 an elasticity cramping that fly that are wound on the right side pin 15.
The inboard that is positioned on the driving shaft 2 near fore shell 5 is set with a retaining wheel 23, connects by screw 24 in fore shell 5 inboards a support toothholder 25 is housed, and a retaining support tooth 26 that is connected with a joggle with retaining wheel 23 is housed in support toothholder 25 inboards.Hinge joint one pressure reduction spring 27 on retaining support tooth 26, the long-armed and galianconism of pressure reduction spring 27 respectively place retaining support tooth 26 1 sides, and pressure reduction spring 27 utilizes spring length arm torque principle to produce pressure difference.When running well, pressure reduction spring 27 is long-armed only to play the effect of retaining being supportted tooth 26 returning positions, but when driving shaft 2 will be refunded, pressure reduction spring 27 galianconism easily made retaining wheel 23 stalls because of the frictional force that can overcome ratchet and cam.
Connect with first driving wheel 12 by screw thread with the chain wheel basement 31 on the output wheel 3 that driving shaft 2 is connected, promptly the outside thread of chain wheel basement 31 and first driving wheel 12 internal thread of taking turns the limit interconnects.
The driven axle 4 that is installed in driving shaft 2 left sides is eccentric shafts 4 of a can regulate flexible element tightness, and first driven wheel, 28, the second driven wheels 29 and the 3rd driven wheel 30 are housed on the eccentric shaft 4.
Flexible element has more than three, and each is with first driving wheel 12 and first driven wheel 28, second driving wheel 13 and second driven wheel 29, the 3rd driving wheel 14 and 30 hinge joints of the 3rd driven wheel.
Driving wheel in the present embodiment is ball sprocket wheel or profile of tooth sprocket wheel or synchronizing jugged belt wheel, and driven wheel also is ball sprocket wheel or profile of tooth sprocket wheel or synchronizing jugged belt wheel, and the flexible element that links with driving wheel and driven wheel is ball chain or profile of tooth chain or synchronous cog belt.
Speed-change process of the present utility model is as follows: when the needs speed change, driving shaft is as long as refund an angle backward, flown a ratchet microcephaly who pushes down and just can be fallen in the cam groove easily, and made the interior ratchet of the big crown of ratchet, rotated thereby drive driving wheel to driving wheel.If the ratchet top can drive the 3rd driven wheel to the 3rd driving wheel, drive first driving wheel by the first coaxial driven wheel then; If the ratchet top can drive second driven wheel to second driving wheel, drive first driving wheel by the first coaxial driven wheel then; If the ratchet top is to first driving wheel, then first driving wheel just directly drives output wheel.The big I of driving wheel and driven wheel is mated by the speed ratio requirement.In order to prevent that the clamping plate that ratchet is housed from following the cam on the driving shaft to refund synchronously, so process some teeth groove at the retaining wheel edge of connecting cleat, when retaining wheel was desired to refund, the power of the pressured poor spring of retaining support tooth was stopped retaining wheel.The angular dimension that the order of conversion rate can be refunded by driving shaft and control arbitrarily.Because machining error and transmission wearing and tearing, flexible element is long or too short can be by the eccentric shaft regulated at will on the driven wheel.
Counter clockwise direction arrow shown in Figure 3 is a normal operation direction of the present utility model, and shown clockwise direction arrow is the changed speed operation direction then, cam reversing during speed change, and retaining wheel does not change.
Claims (4)
1. coaxial speed change gear of flexible drive, it comprises a shell, one driving shaft, output wheel on one driving shaft that is installed in outside the shell, be installed in cam on the driving shaft more than three together with driving wheel, a driven axle, and be installed in driven wheel on the driven axle more than three, it is characterized in that described shell comprises the fore shell and a bonnet of a shape of hood; Be set with on the described driving shaft and be with first cam, three of second cam and the 3rd cam with overhead cam, on each cam, on the following shoulder a pair of circle of suit on, die holder, on every pair of clamping plate, clamp a driving wheel with leaving the space, corresponding with first cam is first driving wheel, corresponding with second cam is second driving wheel, corresponding with the 3rd cam is the 3rd driving wheel, five equilibrium is equipped with on circular clamping plate surface, on axially being positioned at every pair, die holder gap and axial six above pins that connect three pairs of clamping plate, each pin outer surface suit spacer, the outer coiling one of each spacer flies silk, the ratchet that can swing is housed between the pin of per two circular five equilibriums, promptly on being equipped with between every pair of clamping plate by the link connection, two a pair of ratchets putting relatively of die holder, just between first cam and first driving wheel, first pair of ratchet is installed between the die holder, on between second cam and second driving wheel, second pair of ratchet is installed between the die holder, on between the 3rd cam and the 3rd driving wheel, the 3rd pair of ratchet is installed between the die holder, the position of the every pair of ratchet same angle that staggers, the microcephaly of every pair of ratchet embeds cam groove movably, and by an elasticity cramping that flies that is wound on the pin; Inboard near fore shell on the described driving shaft is set with a retaining wheel, by the screw connection one support toothholder is housed in the fore shell inboard, the one retaining support tooth that is connected with a joggle with retaining wheel is housed in support toothholder inboard, hinge joint one pressure reduction spring on retaining support tooth, the long-armed and galianconism of pressure reduction spring respectively place retaining support tooth one side; Chain wheel basement on the described output wheel connects with first driving wheel by screw thread; Described driven axle is the eccentric shaft of a can regulate flexible element tightness, and first driven wheel, second driven wheel and the 3rd driven wheel are housed on the eccentric shaft; Described flexible element has more than three, and each is with first driving wheel and first driven wheel, second driving wheel and second driven wheel, the 3rd driving wheel and the hinge joint of the 3rd driven wheel.
2. the coaxial speed change gear of flexible drive according to claim 1 is characterized in that, described driving wheel is ball sprocket wheel or profile of tooth sprocket wheel or synchronizing jugged belt wheel.
3. the coaxial speed change gear of flexible drive according to claim 1 is characterized in that, described driven wheel is ball sprocket wheel or profile of tooth sprocket wheel or synchronizing jugged belt wheel.
4. the coaxial speed change gear of flexible drive according to claim 1 is characterized in that, described flexible element is ball chain or profile of tooth chain or synchronous cog belt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95225908 CN2240637Y (en) | 1995-11-22 | 1995-11-22 | Flexible gearing coaxial speed-changing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95225908 CN2240637Y (en) | 1995-11-22 | 1995-11-22 | Flexible gearing coaxial speed-changing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2240637Y true CN2240637Y (en) | 1996-11-20 |
Family
ID=33872202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95225908 Expired - Fee Related CN2240637Y (en) | 1995-11-22 | 1995-11-22 | Flexible gearing coaxial speed-changing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2240637Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090396A (en) * | 2014-05-12 | 2015-11-25 | 宁夏巨能机器人系统有限公司 | Material conveying belt deceleration mechanism |
| CN105864384A (en) * | 2016-05-16 | 2016-08-17 | 浙江工业大学 | Drive-by-wire jaw clutch transmission device |
-
1995
- 1995-11-22 CN CN 95225908 patent/CN2240637Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090396A (en) * | 2014-05-12 | 2015-11-25 | 宁夏巨能机器人系统有限公司 | Material conveying belt deceleration mechanism |
| CN105090396B (en) * | 2014-05-12 | 2017-07-28 | 宁夏巨能机器人系统有限公司 | A kind of feeding belt reducing gear |
| CN105864384A (en) * | 2016-05-16 | 2016-08-17 | 浙江工业大学 | Drive-by-wire jaw clutch transmission device |
| CN105864384B (en) * | 2016-05-16 | 2018-01-12 | 浙江工业大学 | Line traffic control jaw clutch transmission device |
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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 |