CN203439221U - Front chain wheel disc mechanism of automatic speed-changing bicycle - Google Patents
Front chain wheel disc mechanism of automatic speed-changing bicycle Download PDFInfo
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- CN203439221U CN203439221U CN201320504016.7U CN201320504016U CN203439221U CN 203439221 U CN203439221 U CN 203439221U CN 201320504016 U CN201320504016 U CN 201320504016U CN 203439221 U CN203439221 U CN 203439221U
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- chain wheel
- speed
- sliding members
- wheel
- changing
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Abstract
The utility model discloses a transmission assembly of an automatic speed-changing bicycle, especially discloses a front chain wheel disc mechanism of an automatic speed-changing bicycle. The front chain wheel disc mechanism comprises a middle shaft, two ends of which are connected with pedal arms, and an outer ring of a central disc is at least provided with three slideways annularly and uniformly. Slide elements are movably disposed on the above mentioned slideways, and chain wheel assemblies are connected with the slide elements. Outer end parts of the above mentioned slideways are respectively provided with a position-restricted block, which can be used to prevent the slide elements from falling from the slide ways directly. A spring is disposed between each position-restricted block and the corresponding slide element, and the middle shaft and the central disc are in a transmission connection by a speed changer. The front chain wheel disc mechanism can be used to solve the problems of the conventional speed-changing bicycles that a rider can feel fatigue under the automatic speed-changing condition, and the gear disengaging and the gear slipping of the transmission chains and the chain wheels can occur easily. The front chain wheel disc mechanism of the automatic speed-changing bicycle is advantageous in that the rider can change the speed easily and conveniently, and at the same time, the speed-changing efficiency is high.
Description
Technical field
The utility model relates to the front chain wheel disk mechanism of a kind of transmission component of automatic speed-changing bicycle, particularly automatic speed-changing bicycle.
Background technology
What the patent No. was " 200310113949.4 " openly provides a kind of variable speed bicycle in Chinese invention patent document, should be by vehicle frame, handlebar, front fork, front-wheel, trailing wheel, car is sat, axis, crank, pedal, chain, sprocket wheel, shift cable, speed change is the variable speed bicycle forming, the sprocket wheel of energy radial expansion is set in bicycle, speed regulation device, chain stretching device, the sprocket wheel of wherein said energy radial expansion, the concrete structure of speed regulation device is, support is set in bicycle, in this support, slideway is set, positioning groove or knock hole or positioning teeth are set in this slideway, in this slideway, slide block is set, locating dowel pin and locating pin bracket with this positioning groove adapted are set in this slide block, top, the jacking block being used in conjunction with this top is set in addition in this vehicle frame or takes over a business, spring is set in this support to be connected by bracing wire and pulley or traveller or slipping ring and this slide plate or gear piece or the gear teeth or tooth, this support or spring and slide block are directly set or gear piece or the gear teeth or tooth are connected.Above-mentioned variable speed bicycle has the function of hand gear and the two-way switching of automatic speed changing, when using automatic speed changing, speed change is by shift cable, transmission support bracket being stirred and made jacking block be in automatic speed changing position, support is in rotation, top moment when the jacking block position by jack-up, now locating dowel pin is in and backs down position, the centripetal force being produced on gear piece by manpower and resistance to motion is adjusted to optimum position by gear piece automatically with the ratio of the centnifugal force that the pulling force of adjustable spring produces on gear piece, leave behind jacking block position locating dowel pin because the application force of spring is located immediately and realized automatic speed changing.Hence one can see that when above-mentioned variable speed bicycle needs continuous acceleration/accel under automatic speed changing state, the outside centnifugal force of its slide block or gear piece or the gear teeth or tooth needs constantly to increase, and the outside centnifugal force that need to increase slide block or gear piece or the gear teeth or tooth needs the rotating speed of continuous lifting bracket to realize, but consider that axis and support that pedal is installed in its structure are direct-drive shapes, this just people's both feet to step on foot-operated frequency very high, therefore can make to ride the person of sailing easily extremely tired.In addition because slide block or gear piece or the gear teeth or tooth and chain in its structure do not have mutual catch gear in transmission, this will make to be in operation and easily occur taking off the phenomenons such as tooth or slip teeth between slide block or gear piece or the gear teeth or tooth and chain, affects the in-use performance of variable speed bicycle.
Summary of the invention
The purpose of this utility model is in order to solve above-mentioned the deficiencies in the prior art, to provide a kind of can conveniently ride the person of sailing and easily realize automatic speed changing, the front chain wheel disk mechanism of the automatic speed-changing bicycle that speed change efficiency is high simultaneously.
To achieve these goals, the front chain wheel disk mechanism of the automatic speed-changing bicycle that the utility model is designed, comprise that two ends are connected with the axis of pedal arm, the at least annular spider that is evenly equipped with three slideways on outer ring, movablely be installed on the sliding members on above-mentioned slideway and be connected to the chain wheel assembly on sliding members, the outer end of above-mentioned slideway is equipped with the positive stop can anti-skidding element directly coming off from slideway, between each positive stop and sliding members, be all folded with spring, between axis and spider, by change-speed box, be in transmission connection, change-speed box is transferred to spider after speed is promoted.
As preferably, change-speed box in the front chain wheel disk mechanism of automatic speed-changing bicycle that the utility model provides between axis and spider is the planetary gear that mainly comprises sun wheel, planetary wheel and gear ring, described spider is a transmission gear ring, axis axially runs through sun wheel, and by two, be cross staggered steel arm and gear ring and be in transmission connection, between sun wheel and gear ring, by Planetary Gear Transmission, be connected, and in above-mentioned sun wheel, be also engaged with a transmission gear simultaneously with interior external tooth outward, driving cog snare is connected on this transmission gear.。In this preferred version planetary gear simple in structure, working stability is high, simultaneously the transmission connecting structure between axis and planetary gear and spider and planetary gear also comparatively simple, stablize.
Certain above-mentioned spider can also be engagement type ratchet in, and at above-mentioned sun wheel external toothing one pawl disk, interior engagement type ratchet one direction drive sleeve is connected on this pawl disk, and transmission direction is between the two consistent with the hand of rotation of driving chain.When in the above-mentioned ratchet device being comprised of pawl disk and interior engagement type ratchet, pawl disk rotates, can drive interior engagement type ratchet also to rotate by the ratchet being hinged on pawl disk, but when pawl disk stops operating, engagement type ratchet but still can be realized idle running on pawl disk, its concrete effect is, when variable speed bicycle accelerates to after certain speed, ride the person's of sailing both feet and no longer step on plate, when thereby pawl disk stops, interior engagement type ratchet can at the uniform velocity slow down rather than stop at once causing sliding members to retract because cireular frequency is not enough under original speed conditions.
In order to prevent that the phenomenons such as de-tooth or slip teeth from appearring between sliding members and driving chain occurring in variable speed bicycle in operational process, can be by the locked locking mechanism on slideway of this sliding members when the utility model provides the driving chain of the chain wheel assembly that is provided with on sliding members in the front chain wheel disk mechanism of moving variable speed bicycle on sliding members and variable speed bicycle to mesh.As preferably, in the front chain wheel disk mechanism of automatic speed-changing bicycle provided by the utility model, locking mechanism is such realization, on sliding members, be provided with slideway mating holes, slideway mating holes inwall place at sliding members is embedded with dish-shaped brake plate, slideway runs through above-mentioned slideway mating holes, and contact with dish-shaped brake plate formation face, on described sliding members, be also provided with tapped bore, at the bottom of the hole of this tapped bore, face above-mentioned dish-shaped brake plate, the sprocket shaft of chain wheel assembly is screwed in above-mentioned tapped bore, and its bottom apical grafting is on dish-shaped brake plate, the direction that spins of sprocket shaft is consistent with the hand of rotation of variable speed bicycle driving chain simultaneously, the sprocket wheel of described chain wheel assembly is provided with annular chamber, this annular chamber is between the axis hole and tooth wall of sprocket wheel, in this annular chamber, be provided with wind spring, one end of this wind spring is fixed on axis hole sidewall, its other end is fixed on tooth wall, and the rolling direction of this wind spring is also consistent with the hand of rotation of variable speed bicycle driving chain.Parts related in the locking mechanism of this preferred version are relatively less, and implementation is simple, and working stability and efficiency are all relatively high.At this, described sliding members can be bearing shell.
The front chain wheel disk mechanism of the automatic speed-changing bicycle that the utility model obtains, axis described in its structure between spider by being in transmission connection again after change-speed box degree of speed-raising, make axis when accelerating rotation, the cireular frequency of spider can increase with its multiple speed, after facilitating sliding members on slideway to overcome self gravitation, under the effect of centnifugal force, outwards throw away, promote driving chain at the radial distance at front chain sprocket place, finally realize automatic speed-transformation of bicycle, therefore this automatic speed changing straightgoing vehicle is ridden under steam the person of sailing and is stepped on foot-operated frequency as long as accelerate easily both feet, just can make the rotating speed of spider be promoted at a high speed, impel completing of automatic speed changing action, simultaneously can be by the locked locking mechanism on slideway of this sliding members owing to being provided with chain wheel assembly on the sliding members driving chain with variable speed bicycle in its structure meshing on sliding members, therefore can effectively prevent that variable speed bicycle from occurring occurring the phenomenons such as de-tooth or slip teeth promoting in-use performance of the present utility model between sliding members and driving chain in operational process, also have the utility model provide front chain-wheel mechanism in concrete use when axis stops the rotation, its sliding members there will not be the situation of retraction immediately.
Accompanying drawing explanation
Fig. 1 is the structural representation of the front chain wheel disk mechanism of embodiment 1 automatic speed-changing bicycle that provides;
Fig. 2 is the package assembly schematic diagram of Fig. 1 middle slideway, spider, chain wheel assembly and spring;
Fig. 3 is the structural representation of the front chain wheel disk mechanism of embodiment 2 automatic speed-changing bicycle that provides;
Fig. 4 is the structural representation of the front chain wheel disk mechanism of embodiment 3 automatic speed-changing bicycle that provides;
Fig. 5 is the longitudinal profile schematic diagram of slider component in Fig. 4;
Fig. 6 is the horizontal section schematic diagram of Fig. 4 middle sprocket.
In figure: pedal arm 1, axis 2, change-speed box 3, gear ring 3-1, planetary wheel 3-2, sun wheel 3-3, spider 4, slideway 5, positive stop 6, spring 7, steel arm 8, transmission gear 9, chain wheel assembly 10, sprocket wheel 11, axis hole 11-1, tooth wall 11-2, annular chamber 11-3, sprocket shaft 12, dish-shaped brake plate 13, sliding members 14, slideway mating holes 14-1, tapped bore 14-2, wind spring 15, pawl disk 16, ratchet 17.
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Embodiment 1:
As depicted in figs. 1 and 2, the front chain wheel disk mechanism of the automatic speed-changing bicycle that the present embodiment provides, comprise that two ends are connected with the axis 2 of pedal arm 1, on outer ring, annular is evenly equipped with the spider 4 of six slideways 5, above-mentioned spider is a transmission gear ring, movablely be installed on the sliding members 14 on above-mentioned slideway 5 and be connected to the chain wheel assembly 10 on sliding members 14, above-mentioned sliding members 14 is selected bearing shell in the present embodiment, the outer end of above-mentioned slideway 5 is equipped with the positive stop 6 can anti-skidding element 14 directly coming off from slideway 5, between each positive stop 6 and sliding members 14, be all folded with spring 7, above-mentioned axis 2 is in transmission connection by change-speed box 3 between transmission gear ring, in the present embodiment, above-mentioned change-speed box 3 is selected and is mainly comprised sun wheel 3-3, the planetary gear of planetary wheel 3-2 and gear ring 3-1, it is such realization that described axis 2 is in transmission connection by above-mentioned planetary gear and transmission gear ring, axis 2 axially runs through sun wheel 3-3, and by two, be the staggered steel arm of cross 8 and be in transmission connection with gear ring 3-1, between sun wheel 3-3 and gear ring 3-1, by planetary wheel 3-2, be in transmission connection, and be also engaged with a transmission gear 9 simultaneously with interior external tooth outward at above-mentioned sun wheel 3-3, driving cog snare is connected on this transmission gear 9.
Embodiment 2:
As shown in Figure 3, the front chain wheel disk mechanism of the automatic speed-changing bicycle that the present embodiment provides, its general structure is consistent with embodiment 1, but the spider of front chain wheel disk mechanism that the present embodiment provides is engagement type ratchet in, and in above-mentioned sun wheel 3-3 external toothing is a pawl disk 16, interior engagement type ratchet one direction drive sleeve is connected on this pawl disk 16, and transmission direction is between the two consistent with the hand of rotation of driving chain.When riding the person's of sailing bi-pedal pedal need to keep straightgoing vehicle to move ahead time, the axis 2 of front chain-wheel mechanism drives by planetary gear and drives the ratchet cover plate 16 rotations, be hinged on the ratchet 17 interior engagement type ratchet rotation of synchronous drive again on the ratchet cover plate 16, finally realize this front chain-wheel mechanism spinning movement, but when variable speed bicycle accelerates to after certain speed, ride the person's of sailing both feet and no longer step on plate, when thereby pawl disk 16 stops operating, interior engagement type ratchet just can continue idle running on pawl disk 16, avoids stopping at once causing sliding members 14 because of the not enough situation of retracting of cireular frequency.
Embodiment 3:
As shown in Figure 4 and Figure 5, the front chain wheel disk mechanism of the automatic speed-changing bicycle that the present embodiment provides, its general structure is consistent with embodiment 1, but in order to prevent that the phenomenons such as de-tooth or slip teeth from appearring between sliding members 14 and driving chain occurring in variable speed bicycle in operational process, can be by the locked locking mechanism on slideway 5 of this sliding members 14 when the present embodiment provides the driving chain of the chain wheel assembly 10 that is provided with on sliding members 14 in the front chain wheel disk mechanism of moving variable speed bicycle on sliding members 14 and variable speed bicycle to mesh.Locking mechanism is such realization in the present embodiment, on sliding members 14, be provided with slideway mating holes 14-1, slideway mating holes 14-1 inwall place at sliding members 14 is embedded with dish-shaped brake plate 13, slideway 5 runs through above-mentioned slideway mating holes 14-1, and contact with dish-shaped brake plate 13 formation faces, on described sliding members 14, be also provided with tapped bore 14-2, at the bottom of the hole of this tapped bore 14-2, face above-mentioned dish-shaped brake plate 13, the sprocket shaft 12 of chain wheel assembly 10 is screwed in above-mentioned tapped bore 14-2, and its bottom apical grafting is on dish-shaped brake plate 13, the direction that spins of sprocket shaft 12 is consistent with the hand of rotation of variable speed bicycle driving chain simultaneously, after the sprocket wheel 11 of chain wheel assembly 10 and the driving chain engagement of bicycle, driving chain drives sprocket shaft 12 on the service direction of driving chain, to make axial-rotation a little, thereby impel dish-shaped brake plate 13 and tightly crimping of slideway 5, realize locked effect mutually, as shown in Figure 6, the sprocket wheel 11 of described chain wheel assembly 10 is provided with annular chamber 11-3, this annular chamber 11-3 is between the axis hole 11-1 and tooth wall 11-2 of sprocket wheel 11, in this annular chamber 11-3, be provided with wind spring 15, one end of this wind spring 15 is fixed on axis hole 11-1 sidewall, its other end is fixed on tooth wall 11-2, and the rolling direction of this wind spring 15 is also consistent with the hand of rotation of variable speed bicycle driving chain, after intermeshing sprocket wheel 11 and driving chain are thrown off, sprocket shaft 12 reset of just reversing under the effect of above-mentioned wind spring 15, now originally with the surface of slideway 5 tightly the dish-shaped brake plate 13 of crimping also moment unclamps, make sliding members 14 recover the art skating motion on slideway 5.
Claims (6)
1. the front chain wheel disk mechanism of an automatic speed-changing bicycle, comprise that two ends are connected with the axis of pedal arm (1) (2), on outer ring, at least annular is evenly equipped with the spider (4) of three slideways (5), movablely be installed on the sliding members (14) on above-mentioned slideway (5) and be connected to the chain wheel assembly (10) on sliding members (14), the outer end of above-mentioned slideway (5) is equipped with the positive stop (6) can anti-skidding element (14) directly coming off from slideway (5), between each positive stop (6) and sliding members (14), be all folded with spring (7), it is characterized in that by change-speed box (3), being in transmission connection between axis (2) and spider (4).
2. the front chain wheel disk mechanism of automatic speed-changing bicycle according to claim 1, the change-speed box (3) that it is characterized in that being positioned between axis (2) and spider (4) is mainly to comprise sun wheel (3-3), the planetary gear of planetary wheel (3-2) and gear ring (3-1), described spider (4) is a transmission gear ring, axis (2) axially runs through sun wheel (3-3), and by two, be the staggered steel arm (8) of cross and gear ring (3-1) and be in transmission connection, between sun wheel (3-3) and gear ring (3-1), by planetary wheel (3-2), be in transmission connection, and outside above-mentioned sun wheel (3-3), be also engaged with a transmission gear (9) simultaneously with interior external tooth, driving cog snare is connected on this transmission gear (9).
3. the front chain wheel disk mechanism of automatic speed-changing bicycle according to claim 1, the change-speed box (3) that it is characterized in that being positioned between axis (2) and spider (4) is mainly to comprise sun wheel (3-3), the planetary gear of planetary wheel (3-2) and gear ring (3-1), described spider (4) is engagement type ratchet in, axis (2) axially runs through sun wheel (3-3), and by two, be the staggered steel arm (8) of cross and gear ring (3-1) and be in transmission connection, between sun wheel (3-3) and gear ring (3-1), by planetary wheel (3-2), be in transmission connection, and outside above-mentioned sun wheel (3-3), be also engaged with a pawl disk (16), interior engagement type ratchet one direction drive sleeve is connected on this pawl disk (16), and transmission direction is between the two consistent with the hand of rotation of driving chain.
4. according to the front chain wheel disk mechanism of the automatic speed-changing bicycle described in claim 1 or 2 or 3, can be by the locked locking mechanism on slideway (5) of this sliding members (14) while it is characterized in that being provided with the driving chain engagement of chain wheel assembly (10) on sliding members (14) and variable speed bicycle on sliding members (14).
5. the front chain wheel disk mechanism of automatic speed-changing bicycle according to claim 4, it is characterized in that described locking mechanism is: on sliding members (14), be provided with slideway mating holes (14-1), slideway mating holes (14-1) inwall place at sliding members (14) is embedded with dish-shaped brake plate (13), slideway (5) runs through above-mentioned slideway mating holes (14-1), and contact with dish-shaped brake plate (13) formation face, on described sliding members (14), be also provided with tapped bore (14-2), at the bottom of the hole of this tapped bore (14-2), face above-mentioned dish-shaped brake plate (13), the sprocket shaft (12) of chain wheel assembly (10) is screwed in above-mentioned tapped bore (14-2), and its bottom apical grafting is on dish-shaped brake plate (13), the direction that spins of sprocket shaft (12) is consistent with the hand of rotation of variable speed bicycle driving chain simultaneously, the sprocket wheel (11) of described chain wheel assembly (10) is provided with annular chamber (11-3), this annular chamber (11-3) is positioned between the axis hole (11-1) and tooth wall (11-2) of sprocket wheel (11), in this annular chamber (11-3), be provided with wind spring (15), one end of this wind spring (15) is fixed on axis hole (11-1) sidewall, its other end is fixed on tooth wall (11-2), and the rolling direction of this wind spring (15) is also consistent with the hand of rotation of variable speed bicycle driving chain.
6. the front chain wheel disk mechanism of automatic speed-changing bicycle according to claim 5, is characterized in that described sliding members (14) is bearing shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320504016.7U CN203439221U (en) | 2013-08-19 | 2013-08-19 | Front chain wheel disc mechanism of automatic speed-changing bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320504016.7U CN203439221U (en) | 2013-08-19 | 2013-08-19 | Front chain wheel disc mechanism of automatic speed-changing bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203439221U true CN203439221U (en) | 2014-02-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320504016.7U Expired - Fee Related CN203439221U (en) | 2013-08-19 | 2013-08-19 | Front chain wheel disc mechanism of automatic speed-changing bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203439221U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104608872A (en) * | 2015-02-11 | 2015-05-13 | 吕元胜 | Circular-ring curved-surface planet stepless transmission and bicycle with same |
| CN106043587A (en) * | 2016-08-04 | 2016-10-26 | 夏义捷 | Centrifugal automatic speed change gear |
-
2013
- 2013-08-19 CN CN201320504016.7U patent/CN203439221U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104608872A (en) * | 2015-02-11 | 2015-05-13 | 吕元胜 | Circular-ring curved-surface planet stepless transmission and bicycle with same |
| CN106043587A (en) * | 2016-08-04 | 2016-10-26 | 夏义捷 | Centrifugal automatic speed change gear |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140219 Termination date: 20140819 |
|
| EXPY | Termination of patent right or utility model |