CN2448994Y - Double coaster - Google Patents
Double coaster Download PDFInfo
- Publication number
- CN2448994Y CN2448994Y CN 00244853 CN00244853U CN2448994Y CN 2448994 Y CN2448994 Y CN 2448994Y CN 00244853 CN00244853 CN 00244853 CN 00244853 U CN00244853 U CN 00244853U CN 2448994 Y CN2448994 Y CN 2448994Y
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- CN
- China
- Prior art keywords
- ring
- ratchet
- interior
- outer shroud
- roller
- Prior art date
- 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 relates to a coaster with mechanical driving, comprising a rotating shaft 22, an outer ring connected with a chain wheel 2, a middle ring 4 in the outer ring and an outer ratchet wheel and ratchet pawl mechanism between the outer ring and the middle ring, wherein, the outer ring is eccentrically connected with a machine body 13 throguh a springs 12; the outer ratchet wheel and ratchet pawl mechanism is provided with an outer ratchet pawl 8 and an outer ratchet 3 matched with the outer ratchet pawl 8; an inner ring 14 sheathed with the middle ring is arranged on a rotating shat; a roller 15 engaged with the inner peripheral surface of the middle ring in the wedge-shaped port 17 and a roller spring 16 are arranged between the middle ring and the inner ring. The utility model has the advantages accelerating rotation and free inversion. The utility model is especially suitable for matching with a bicycle.
Description
The utility model relates to the free wheel device in the mechanical transmission, particularly free wheel device is nested with and is concatenated into the free wheel device that one becomes dual structure.
Existing free wheel device, mostly be single structure, the flywheel of bicycle for example is usually by the outer shroud of the one that is linked to be with the power input sprocket, be sleeved in the outer shroud rotationally and the interior ring that links to each other with pto, the ratchet and pawl arrangement of be in transmission connection outer shroud and interior ring constitutes.Wherein ratchet and pawl arrangement is made of the ratchet in week in the outer shroud, ratchet and the ratchet spring on the interior ring.With the supporting use of bicycle the time, sprocket wheel and bicycle driving chain are joined and are connected, and the wheel of interior ring and bicycle is joined and connected.This free wheel device is when sprocket wheel input rotating power, and outer shroud rotates, and ratchet is meshed with ratchet, ring rotation outputting rotary power in promoting.When input power interruption outer shroud stopped operating, ratchet and ratchet broke away from, and interior ring surmounts outer shroud and continues rotating operation under the effect of rotatory inertia, thereby bicycle moves under the effect of car load inertial force.But this free wheel device does not possess the acceleration function.In addition, be that bicycle is when retreating, because the engagement of ratchet and ratchet in the counter-rotating of interior ring.And make outer shroud be driven counter-rotating, and cause the counter-rotating of chain and driving mechanism thereof and unfavorable operation, therefore, this free wheel device does not possess the counterrotating function.
Given this, the purpose of this utility model is to provide a kind of and has the dual free wheel device that quickens function, and a kind of dual free wheel device with counterrotating function further is provided.
The utility model adopts the interior ring of the outer shroud of the input rotation of suit successively, middle ring, output rotation, adopt the click driving mechanism to be in transmission connection at outer shroud and middle interannular, adopt wedge surface roller the friction type driving mechanism to be in transmission connection at middle ring and interior interannular, and, utilize the spring circulation to hold the exoergic of making preparation for dropping and realize its purpose with speedup with ring and body in the acceleration spring connection.And further adopt the trip ring that can promote roller at interior ring and middle interannular, between interior ring and body, adopt the internal clickwork detent mechanism with stir the trip ring promote roller remove wedge surface roller friction transmission make in the ring energy freely reverse and realize its purpose.
Dual free wheel device of the present utility model (referring to accompanying drawing), comprise rotating rotating shaft (22), with the concentric outer shroud that links to each other of sprocket wheel (2) (1), rotationally with the intracardiac middle ring (4) that is enclosed within the outer shroud, outer shroud and middle interannular have the outer ratchet and pawl arrangement of be in transmission connection outer shroud and middle ring, outer shroud is prejudicially and can links to each other with body (13) with acceleration spring (12), the outer ratchet (3) that outer ratchet and pawl arrangement has an outer ratchet (8) and matches, in rotating shaft, have concentric locking collar be contained in interior ring (14) in the ring, in middle ring and interior interannular have wedge-shaped indentation (17) at interior ring, can be roller (15) and the roller spring (16) thereof that wedging is connected with the inner peripheral surface of middle ring.
Be the concentric trip ring (25) that is equipped with rotationally between above-mentioned middle ring (4) and interior ring (14), above-mentioned roller (15) is the arc notch (26) that can be placed the trip ring by the trip ring with promoting, in ring go up and interior ratchet (19) and ratchet spring (20) thereof to be housed rotationally with bearing pin (18), the pawl point of interior ratchet match with the interior ratchet (24) on the body and the moving tooth (21) of interior ratchet and trip ring on dial and mouthful match and stir to swim and encircle.
Above-mentioned rotating shaft (22) can be installed in the bearing support (23) that links to each other with body (13) with steel ball (5) and bearing guard (6), and above-mentioned interior ratchet (24) can be with one heart and is arranged on the bearing support.
On the above-mentioned outer shroud (1), eccentric shaft (10) can be arranged, above-mentioned acceleration spring (12) is connected with the axle sleeve (11) that is sleeved on rotationally on the eccentric shaft.
Above-mentioned middle ring (4) can be contained in the outer shroud (1) with steel ball (5) and bearing guard (6).
Above-mentioned interior ring (14) also can be contained in the middle ring (4) with steel ball (5) and bearing guard (6).
When the utility model is fitted on work body such as the bicycle, adopt common structure to be contained in rotating shaft on the body rotationally, machinery is carried out in rotating shaft and work to link to each other as bicycle quick, and will speed up spring and be connected with body, with common Transmitted chains sprocket wheel and power mechanism such as pedal or motor or internal-combustion engine are linked to each other.By sprocket wheel input rotating power, through outer shroud, outer click driving mechanism, middle ring, wedge surface roller the friction type driving mechanism, interior ring, from the rotating shaft outputting rotary power; When rotating shaft during together with the counter-rotating of interior ring, stir roller through internal clickwork ratchet driving mechanism, trip ring, remove wedge surface roller friction transmission, being in transmission connection of ring and interior ring in the disconnection, ring realizes that together with the counter-rotating of rotating shaft bicycle retreats reversing in realizing.
Said structure of the present utility model makes it have following advantage and effect.
One, the outer shroud of suit of the present utility model, middle ring, interior ring, the click driving mechanism of outer shroud and middle interannular, the wedge surface roller the friction type driving mechanism of middle ring and interior interannular, be connected the structure of acceleration spring prejudicially with between body with middle ring, in the motivational drive rotation, the eccentric tie point of ring stretches gradually and holds at preceding half way around and is equipped with the spring energy in the acceleration spring quilt, and at back half way around retracting spring energy, ring surmounts the outer shroud rotation in quickening to spur, ring quickens rotation together with rotating shaft in driving, ring quickens to stop in after eccentric tie point goes to starting point, encircle in this moment together with rotating shaft under action of inertia, ring rotation during secondary surmounts again, thus ring is together with the acceleration rotation of rotating shaft in realizing.
Two, the wedge surface roller the friction type driving mechanism of middle ring of the present utility model and interior interannular, in ring and the trip ring of middle interannular, and roller be contained in structure in the arc notch of trip ring, and the structure of the internal clickwork ratchet driving mechanism between interior ring and body, when rotating shaft is reversed together with interior ring, interior ratchet is oppositely stirred the trip ring and is rotated, promoting roller again through the trip ring rolls to the big end of wedge-shaped indentation, remove wedge surface roller friction transmission, ring and middle ring is in transmission connection in disconnecting, ring is unfettered together with the counter-rotating of rotating shaft in making, and ring is together with the counter-rotating voluntarily of rotating shaft in realizing.
The utility model is specially adapted to and the supporting use of bicycle.Make bicycle realize quickening to drive and freely move backward.
Below, the utility model is further described to use embodiment and accompanying drawing thereof again.
Brief description of drawings.
Fig. 1 is the structural representation of a kind of dual free wheel device of the present utility model.
Fig. 2 is the A-A sectional view of Fig. 1.
Embodiment 1
A kind of dual free wheel device of the present utility model, as shown in drawings.Its structure is similar with the flywheel of common bicycle.By formations such as the outer shroud that is nested with successively, middle ring, trip ring, interior ring and rotating shafts.Present embodiment is imported power from outer shroud, the rotating shaft outputting power.
Above-mentioned outer shroud 1 is ring.The periphery of outer shroud has and is the sprocket wheel 2 that concentric type fuses.The outer ratchet 3 that is shaped on an interior toothing interior week at outer shroud.
Above-mentioned middle ring 4 is ring, is with steel ball 5 and bearing guard 6 in the inner chamber of rotatable and with one heart the circle that is installed in outer shroud.Be in the pawl base 7 of breach shape in middle ring outer periphery, the outer ratchet 8 and the ratchet spring 9 thereof of common strip structure are installed, thus outer shroud and middle interannular by one outside the outer click driving mechanism of ratchet 8 constitutes outside ratchet 3 and match be in transmission connection outer shroud 1 and middle ring 4.The outer click driving mechanism of present embodiment is made when outer shroud clockwise rotates, and outer ratchet is meshed with outer ratchet, otherwise then breaks away from.In addition, the outer end of middle ring is shaped on the bump that protrudes to periphery, installs the eccentric shaft 10 of bolt structure at bump, is suit axle sleeve 11 rotationally again on eccentric shaft, and axle sleeve is connected with an end of helical acceleration spring 12.The other end of acceleration spring is connected with installation body 13 of the present utility model.
Above-mentioned interior ring 14 is ring, is in the inner chamber that is sleeved on middle ring 4 with one heart rotationally with steel ball 5 and bearing guard 6.Middle ring and interior interannular have be in transmission connection in the roller that is right cylindrical 15 and the roller spring 16 thereof of ring and interior ring.The peripheral portion of ring was along in the wedge-shaped indentation 17 of anchor ring in roller was installed in, and in the spring eye of the bottom of the big end of wedge-shaped indentation spiral roller spring 16 was installed, and constituted wedge surface roller the friction type driving mechanism.Under the ejection effect of roller spring, can make the inner peripheral surface wedging interlock of roller and middle ring 4 and rub be in transmission connection in the ring 4 with interior ring 14.At middle ring and interior interannular, above-mentioned wedge-shaped indentation, roller, roller spring structure can have two covers or many covers.On the anchor ring of interior ring, with bearing pin 18 interior ratchet 19 is housed rotationally, also be set with spiral ratchet spring 20 on the bearing pin in the ring body of interior ring, an end and the bearing pin of ratchet spring are connected, and the other end and interior ring are connected, and ratchet resets in being used for.The front end of ratchet is made the pawl point in above-mentioned, and the moving tooth 21 of slick and sly shape is made in the rear end.
Above-mentioned rotating shaft 22 can be hollow tubular axis structure, also can be the solid shaft structure.Adopt screw connection structure and interior ring 14 to be solidly fixed.Rotating shaft is with steel ball 5 and bearing guard 6 and is installed in rotation in the bearing support 23.Bearing support is the step ladder circular ring of support arm shape, utilizes support arm to be solidly fixed with screw and body 13.Make interior ratchet 24 with the concentric external tooth type structure of bearing support in the periphery of the inner of bearing support, thereby interior ratchet and body are into a single integrated structure.Should make and to be meshed with the pawl point of above-mentioned interior ratchet 19 by interior ratchet.Interior ratchet 24, interior ratchet 19 and ratchet spring 20 thereof constitute internal clickwork ratchet driving mechanism.The internal clickwork ratchet driving mechanism of present embodiment is made when interior ring 14 inhours are rotated, and interior ratchet is meshed with interior ratchet, otherwise then breaks away from.
Above-mentioned trip ring 25 is ring, is contained in the round cavity of middle ring 4, is to be sleeved on interior ring 14 peripheries rotationally.Be shaped on the mouth of dialling of round slip surface opening in interior week of trip ring.The moving tooth 21 of ratchet inserts to dial in the mouth and is movingly in above-mentioned.On the trip ring, also open and be shaped on arc notch 26.During assembling above-mentioned roller 15 is contained in the arc notch, make it when interior ring rotation makes the interior ratchet 19 corresponding rotations that are meshed with interior ratchet, the moving tooth 21 of interior ratchet is stirred the dialling mouth of trip ring and is dialled the ring of wandering, big end to wedge-shaped indentation 17 promotes roller 15 and compresses roller spring 16, stings to cooperate until the roller and the wedge of the inner peripheral surface of middle ring 4 to be separated and to disconnect transmission.
The utility model relies on bearing support 23 usefulness screws 27 that it is installed on the body 13.The other end that will speed up spring 12 is connected with body 13; The sprocket wheel 2 and the chain (not shown) of input power are joined even.Rotating shaft 22 of the present utility model is the rotating power output shaft.If when being fitted in the utility model on the bicycle, body is the vehicle frame of bicycle, sprocket wheel is equipped mutually with the bicycle driving chain, and the wheel hub 28 of rotating shaft and bicycle quick is equipped, equipped wheel on the wheel hub.When chain drive sprocket wheel 2 turned clockwise, shown in Fig. 1 solid arrow, outer ratchet 3 encircled 4 with outer ratchet 8 engagements and turns clockwise in the transmission; Under the drive of middle ring, roller 15 in the wedge-shaped indentation 17 of interior ring 14 rolls to the small end of wedge-shaped indentation, inner peripheral surface three wedging interlock until the wedge-shaped indentation bottom surface of interior ring, the surface of roller, middle ring, form that the friction type is in transmission connection and in driving ring turn clockwise, ratchet 19 breaks away from interior ratchet 24 in this moment, the rotating shaft 22 that is connected with interior ring turns clockwise, and advances thereby drive the bicycle quick rotation.When middle ring 4 rotates, in eccentric shaft 10 on the ring thereupon rotating stretching acceleration spring 12, as shown in Figure 1, when eccentric shaft from the B point through the C point when the D point rotates, the elastic pulling force of acceleration spring increases gradually, elastic pulling force increases to maximum when going to the D point, and one works as eccentric shaft turns over the D point, and acceleration spring just sharply shrinks, ring 4 surmounts outer shroud 1 acceleration rotation in the drive, formation once surmounts, and ring 14 quickens rotation together with rotating shaft 22 in roller 15 drives, and at this moment outer ratchet 3 breaks away from outer ratchet 8; When eccentric shaft 1 went to the B point once more, middle ring stopped to quicken, and at this moment, ring 4 quickened rotation during interior ring 14 surmounted under the inertial force effect together with rotating shaft 22 (and wheel), formed secondary and surmounted.When encircling rotation in interior ring surmounts, roller 15 is encircled middle relatively surmounting and can realizing of encircling by the anti-big end that is pushed into wedge-shaped indentation 17 in making.Subsequently, when the rotation of central ring and outer shroud were synchronous, outer ratchet 3 mesh once more with outer ratchet 8, the eccentric shaft acceleration spring that stretches once more, and so circulation is carried out, the realization acceleration.
When rotating shaft 22 is rotated together with interior ring counter-rotating is promptly counter-clockwise, shown in Fig. 1 dotted arrow, retreat as bicycle, interior ratchet 19 and interior ratchet 24 engagements, because interior ratchet is connected motionless with body mutually, thereby ratchet rotates around bearing pin 18 inhours in making, the moving tooth 21 of interior ratchet rear end is stirred trip ring 25 inhours and is rotated, the roller 15 that places the arc notch 26 of trip ring is pushed to the big end of the wedge-shaped indentation 17 of interior ring, make the bottom surface of wedge-shaped indentation, the surface of roller, the inner peripheral surface three's of middle ring wedging interlock is released, interrupt being in transmission connection of interior ring 14 and middle ring 4, realize the counter-rotating of rotating shaft, realize retreating of bicycle together with interior ring.
Claims (6)
1, dual free wheel device, comprise rotating rotating shaft (22), with the concentric outer shroud that links to each other of sprocket wheel (2) (1), rotationally with the intracardiac middle ring (4) that is enclosed within the outer shroud, outer shroud and middle interannular have the outer ratchet and pawl arrangement of be in transmission connection outer shroud and middle ring, it is characterized in that outer shroud is prejudicially and can links to each other with body (13) with acceleration spring (12), the outer ratchet (3) that outer ratchet and pawl arrangement has an outer ratchet (8) and matches, in rotating shaft, have concentric locking collar be contained in interior ring (14) in the ring, in middle ring and interior interannular have wedge-shaped indentation (17) at interior ring, can be roller (15) and the roller spring (16) thereof that wedging is connected with the inner peripheral surface of middle ring.
2, dual free wheel device according to claim 1, it is characterized in that being between ring (4) and interior ring (14) in said concentric is equipped with trip rotationally and encircles (25), said roller (15) is the arc notch (26) that can be placed the trip ring by the trip ring with promoting, in ring go up and interior ratchet (19) and ratchet spring (20) thereof to be housed rotationally with bearing pin (18), the pawl point of interior ratchet match with the interior ratchet (24) on the body and the moving tooth (21) of interior ratchet and trip ring on dial and mouthful match and stir to swim and encircle.
3, dual free wheel device according to claim 2, it is characterized in that said rotating shaft (22) is installed in steel ball (5) and bearing guard (6) in the bearing support (23) that links to each other with body (13), said in ratchet (24) be with one heart and be arranged on the bearing support.
4, according to claim 1,2 or 3 described dual free wheel devicees, it is characterized in that eccentric shaft (10) is arranged on the said outer shroud (1), said acceleration spring (12) is connected with the axle sleeve (11) that is sleeved on rotationally on the eccentric shaft.
5,, it is characterized in that said middle ring (4) is contained in the outer shroud (1) with steel ball (5) and bearing guard (6) according to claim 1,2 or 3 described dual free wheel devicees.
6,, it is characterized in that said interior ring (14) is contained in the middle ring (4) with steel ball (5) and bearing guard (6) according to claim 1,2 or 3 described dual free wheel devicees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00244853 CN2448994Y (en) | 2000-11-02 | 2000-11-02 | Double coaster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00244853 CN2448994Y (en) | 2000-11-02 | 2000-11-02 | Double coaster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2448994Y true CN2448994Y (en) | 2001-09-19 |
Family
ID=33604455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00244853 Expired - Fee Related CN2448994Y (en) | 2000-11-02 | 2000-11-02 | Double coaster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2448994Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104986682A (en) * | 2015-05-13 | 2015-10-21 | 上海舜海船舶设备有限公司 | Reel mechanism, rope deploying and retracting mechanism and sweeping device |
-
2000
- 2000-11-02 CN CN 00244853 patent/CN2448994Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104986682A (en) * | 2015-05-13 | 2015-10-21 | 上海舜海船舶设备有限公司 | Reel mechanism, rope deploying and retracting mechanism and sweeping device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: TANG DEJIAN Free format text: FORMER OWNER: XU MOHONG Effective date: 20030725 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20030725 Address after: Yang Shi Jie Wu Fu Xiang, Chengdu City, Sichuan Province, No. 3 610000 Patentee after: Tang Dejian Address before: 642373, Guihua Town, Yao Town, Anyue County, Sichuan Patentee before: Xu Mohong |
|
| 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 |