CN1055896C - Speed changer of mountain bicycle - Google Patents
Speed changer of mountain bicycle Download PDFInfo
- Publication number
- CN1055896C CN1055896C CN94113645A CN94113645A CN1055896C CN 1055896 C CN1055896 C CN 1055896C CN 94113645 A CN94113645 A CN 94113645A CN 94113645 A CN94113645 A CN 94113645A CN 1055896 C CN1055896 C CN 1055896C
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- annulus
- speed changer
- endoporus
- wheel
- switch member
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Abstract
The present invention relates to a speed changer for a hill-side racing bicycle, which users a planet-gear speed-changing mechanism. Speed increase and labor saving are obtained, and compact structure, reasonable stress, sensitive and reliable speed changing operation, closed operation, rusty prevention, safety, beauty and service life prolongation are simultaneously obtained. The present invention is mainly and technically characterized in that a middle axle speed changer arranged on the crank part and a rear axle speed changer mainly composed of a central gear, a planet wheel, an inner tooth ring, a chain wheel and an amplitude board are arranged and can be respectively and singly used, and an operating mechanism composed of a support bracket, a stopping block, a pulling hook, a spring, a braking wire, etc., is arranged and is used for controlling the action of internal components of the rear axle speed changer and the middle axle speed changer to obtain the purpose of changing the speed.
Description
The present invention relates to a kind of mountain bike change-speed box that is suitable for that changes existing mountain bike method for changing speed.
The mountain bike speed change generally adopts the multichain dish to hang and changes the chain submode, and its weak point is to hang to change the chain poor accuracy, and it is slow to handle trouble, and component strength is low, force-bearing situation is bad, serious wear, and parts all expose, easy-to-rust promptly influences service life, owes safety attractive in appearance again.At present for having addressed the above problem 2 routine utility model patents, but it is all perfect inadequately, lack practicality, one: Chinese patent, publication number CN2124867U, application number 92212106.0, multi-functional rear axle planetary gear, its major technique feature is to use by two to be installed in flywheel on the backshaft skin side by side and built-in overrunning clutch mechanism is realized speed change, but because its overrunning clutch mechanism runs counter to the type overriding clutch principle, so be difficult to realize the steady speed change transmission.Its two: Chinese patent, publication number CN2180584Y, the ZL patent No. 94202171.1, the bicycle new work transmission, its major technique feature be by claw and ratchet as Transmission, the profile of tooth claw is subjected to the effect of spring to carry out transmission with the inner gear engagement under normal conditions, but does not have abnormal owing to its profile of tooth claw has only a normality, state of kinematic motion can not be changed, thereby also speed changing function can't be realized.
The objective of the invention is to provide a kind of speed changer of mountain bicycle, adopt epicyclic transmission and special on-off element to reach rational transmission and speed changing effect, and make its compact conformation, force-bearing situation improves, operation is simple and reliable, switching speed is fast, and all drive disk assembly all seals with chain cover, is safe condition attractive in appearance.
The object of the present invention is achieved like this, at backshaft skin the flywheel that a band external tooth is equipped with at the flywheel place is installed, its sides adjacent is equipped with a rotating support cover, be fixed with the sprocket wheel of the star-wheel that has flange on it and having the end face that rotates on the star-wheel flange of flange that the internally toothed annulus of endoporus annulus is arranged, the cylindrical of this internally toothed annulus has a short slot, and in short slot place articulated pressure ligulate switch member, this switch member has both sides, and one side tail end is headed on (referring to Fig. 2) opposite side and sprocket wheel and has an effect by plate spring.Form transmission device with upper-part, on back vent and back prop, be fixed with the support of a band backing block, its backing block is pressed to the tongue of ligulate switch member with torsion spring and is had in the cylindrical short slot of internally toothed annulus of endoporus annulus and by brake cable and affects, and forms steering unit thus.When making it stop short slot, backing block have the internally toothed annulus of endoporus annulus motionless when handling, and sprocket wheel drives the star-wheel that flange is arranged, this star-wheel transmission flywheel makes wheel quicken to rotate, when the manipulation backing block makes it throw off short slot and presses ligulate switch member tongue, sprocket wheel drives the star-wheel that flange is arranged, have the internally toothed annulus and the flywheel of endoporus annulus to rotate synchronously together, then wheel slowly runs, and more than is the rear axle transmission system.In addition, former peace sprocket wheel place on the pedal crank shaft, (this is taken turns the knob-shaped switch member is housed to be fixed with the disc of the star-wheel that has flange and the sun gear of empty cover, the knob of this switch member acts on drag hook mutually in the sun gear outside, the other end acts on disc mutually in that sun gear is inboard) meshing that cylindrical has the endoporus annulus for the sprocket wheel end face on the star-wheel tooth and be the internally toothed annulus sprocket wheel that guide rail rolls on the star-wheel flange with this annulus, constitute internal speed-changing mechanism, on the five-way front frame beam of axis, be fixed with the support of band drag hook, drag hook is controlled by torsion spring and brake cable, constitutes steering unit.After the pedal crank rotates when the towing brake line drag hook catch on the knob of the knob-shaped switch member on the sun gear, its other end is changeed throw off disc after the angle and sun gear is stopped operating, then have the internally toothed annulus sprocket wheel of endoporus annulus to quicken rotation; Behind the releasing of brake line, drag hook is thrown off knob under the torsion spring effect, and then the other end of this knob-shaped switch member withstands disc again and therewith rotates, and then has the internally toothed annulus sprocket wheel and the crank of endoporus annulus to rotate synchronously, more than is the axis transmission system.Rear axle transmission system and axis transmission system can use separately separately, and bicycle has high and low two speed during singly with the rear axle transmission system, and bicycle has normal, high two speed during singly with the axis transmission system; Rear axle transmission system and axis transmission system use the formation speed changer of mountain bicycle jointly, it have low speed, Chang Su (the common speed of a motor vehicle), at a high speed, four kinds of speed of hyper-speed.So the present invention can be equipped to the vehicle of three kinds of performances.
Application the present invention is simple, only needs monkey spanner, and instruments such as screwdriver are pulled down appropriate section on former common car or mountain bike, change the present invention and get final product.
The polydisc that the alternative Bicycle Plant of the present invention produces changes the chain speed-changing mechanism and dispatches from the factory with car load is supporting, becomes novel mountain bike, and the also available the present invention of user reequips original common car or mountain bike voluntarily.The present invention compares hyper-speed with common car under pedal speed same case, maximum speed improves 137% and 53% during high speed, during low speed laborsaving 45.8%, compare hyper-speed with existing mountain region derailleur, maximum speed improves 100% and 29.4% during high speed, during low speed laborsaving 3.9%, the present invention is because of having flanged star-wheel and pressing ligulate switch member and knob-shaped switch member, so deducted internally toothed annulus supporting member and the reliability that has increased variable speed operation, sensitieness, and can replace the effect of flywheel, in addition, compact conformation, intensity is good, and strained condition is reasonable, the parts inner cover, promptly safety is attractive in appearance again, avoided corrosion, improved service life, equipped mountain bicycle of the present invention is the new model of sport-racing car.
Concrete structure of the present invention is provided by following embodiment and accompanying drawing thereof.
Fig. 1 is the structure and the erection plan thereof of the rear axle transmission system of the speed changer of mountain bicycle of proposition according to the present invention, and Fig. 2 is the left view of Fig. 1.
Fig. 3 is the structure and the erection plan thereof of the axis transmission system of the speed changer of mountain bicycle of proposition according to the present invention.Fig. 4 is the left view of Fig. 3.
Describe the CONSTRUCTED SPECIFICATION and the service condition of the rear axle transmission system of the speed changer of mountain bicycle that proposes according to the present invention in detail below in conjunction with Fig. 1, Fig. 2.
Tighten set at the bicycle rear axle skin flywheel of external tooth (5) is arranged, its outside is being supported sprocket wheel (3) by the axle shelves (2) that are fastened on the back axostylus axostyle (1) through steel ball, this sprocket wheel (3) is gone up by fixing minor axis (6) on it is supporting flange through steel ball star-wheel (7), this star-wheel (7) is meshed with external tooth on the flywheel, it is that guide rail rotates around it on the star-wheel flange with star-wheel (7) engagement that flange is arranged and with the endoporus annulus that cylindrical has the short slot end face that the internally toothed annulus of endoporus annulus is arranged, the cylindrical short slot place articulated pressure ligulate switch member (16) of this internally toothed annulus (8), this switch member has both sides, one side tail end is headed on (referring to Fig. 2) by plate spring (11), and opposite side and sprocket wheel (3) make effect.Tighten set support (10) at back vent and back prop, backing block (12) is hinged in the framework of support (10) through bearing pin (14), and the brake cable (15) that is installed on the support (10) involves, pressed to the cylindrical of the internally toothed annulus (8) of endoporus annulus simultaneously by torsion spring (13), after sprocket wheel (3) is driven by chain, it is then being pressed on the cylindrical of the internally toothed annulus that the endoporus annulus is arranged (8) by torsion spring (13) and slides and embed in the short slot when affecting if backing block (12) is not by brake cable (15), so the opposite side head end was thrown off sprocket wheel (3) after compressing pressed the tongue of ligulate switch member (16) to make it change an angle, backing block (12) withstands the short slot mouth in the twinkling of an eye, stop the rotation of the internally toothed annulus (8) that the endoporus annulus is arranged, then sprocket wheel (3) drives has the star-wheel (7) of flange to make flywheel (5) make twirl, and wheel also changes soon.After towing brake line (15) makes backing block (12) throw off short slot, press ligulate switch member (16) under the effect of plate spring (11), to change an angle and head on chain and change (3), so sprocket wheel (3) drives flywheel (5) by the star-wheel (7) that flange is arranged and has the internally toothed annulus (8) of endoporus annulus to rotate synchronously, this moment, wheel slowly ran.
Below in conjunction with Fig. 3, Fig. 4 describes the CONSTRUCTED SPECIFICATION and the service condition of the axis transmission system of the speed changer of mountain bicycle that proposes according to the present invention in detail.
On crank (23), fixing the disc (22) of band minor axis (20), sun gear (19) goes up articulated knob-shaped switch member (18) and sky is enclosed within on the axle of crank (23), its external tooth and the star-wheel that flange is arranged (21) engagement that is bearing on the minor axis, star-wheel (21) again with the internally toothed annulus sprocket wheel (24) that the endoporus annulus is arranged on internal gearing, the flange bearing of star-wheel (21) the endoporus annulus of internally toothed annulus sprocket wheel (24), and this endoporus circle ring rotates on the star-wheel flange just like guide rail.Support (25) by clamping plate (27) be fastened on (referring to Fig. 4) drag hook (17) on the front frame beam be hinged on pull to extrapolation and by brake cable (26) in the frame groove of support (25) and by button spring (28) in.When crank rotates, do not catch on when knob-shaped switch member (18) knob in sun gear (19) outside as drag hook (17), then this knob-shaped switch member (18) other end withstands disc (22), this moment, disc drove the star-wheel (21) that flange is arranged, sun gear (19) and have the internally toothed annulus sprocket wheel (24) of endoporus annulus to rotate synchronously, when affect brake cable (26) haul drag hook (17) be flapped toward in the time catch on the knob-shaped switch member (18) on the sun gear (19) immediately knob throw off disc (22) after making its other end change an angle, so drag hook (17) effect down sun gear (19) stop operating, and disc (22) makes the internally toothed annulus sprocket wheel (24) of endoporus annulus do acceleration rotation with respect to crank (23) by the star-wheel (21) that flange is arranged.
In the bicycle walking process, handle the axis transmission system of control speed changer of mountain bicycle and the brake cable of rear axle transmission system respectively, can obtain four kinds of different speed, low speed, Chang Su, at a high speed, hyper-speed.
Claims (8)
1, speed changer of mountain bicycle, this change-speed box is made up of rear axle transmission system and axis transmission system two parts: by the flywheel (5) of band external tooth, fixing the sprocket wheel (3) of minor axis (6) on the disc, the star-wheel (7) that flange is arranged, cylindrical has the short slot end face that the internally toothed annulus (8) of endoporus annulus is arranged, pressure ligulate switch member (16) that tail end is headed on by plate spring (11) and the support (10) that tightens at back vent and back prop, be installed in the backing block (12) on the support (10), bearing pin (14), torsion spring (13), the rear axle transmission system that brake cable (15) is formed, by crank (23), the disc (22) of band minor axis (20), the sun gear (19) of articulated knob-shaped switch member (18), the star-wheel (21) that flange is arranged, end face has the internally toothed annulus sprocket wheel (24) of endoporus annulus and is fastened with support (25) on the front frame beam by clamping plate (27), be installed in the drag hook (17) on the support (25), torsion spring (28), the axis transmission system that brake cable (26) is formed, it is characterized in that the flywheel (5) with external tooth is fastened on the backshaft skin, going up fixing minor axis (6) by sprocket wheel (3) has the short slot end face that internally toothed annulus (8) engagement of endoporus annulus is arranged with the external tooth and the cylindrical of flywheel (5) through the star-wheel that flange is arranged (7) of steel ball supporting simultaneously, and with the endoporus annulus on the flange bearing internally toothed annulus (8) around rotation, backing block (12) is involved by brake cable (15), simultaneously pressed to the cylindrical of the internally toothed annulus (8) of endoporus annulus, and can push down the tongue of ligulate switch member (16) by torsion spring (13); By the star-wheel that flange is arranged (21) of the minor axis (20) on the disc (22) supporting simultaneously and sun gear (19) and end face internal gearing on the internally toothed annulus sprocket wheel (24) of endoporus annulus is arranged, the star-wheel flange bearing the endoporus annulus of internally toothed annulus sprocket wheel (24), make it around rotation, in drag hook (17) is pulled to extrapolation and by brake cable (26) by torsion spring (18), and catch on the knob of knob-shaped switch member (18), the knob of knob-shaped switch member (18) then acts on drag hook outside sun gear (19) mutually, and the other end acts on disc (22) mutually in sun gear (19) inboard.
2, speed changer of mountain bicycle according to claim 1 is characterized in that sprocket wheel (3) is being supported through steel ball by the axle shelves (2) that are fastened on the back axostylus axostyle (1).
3, speed changer of mountain bicycle according to claim 1 is characterized in that having the cylindrical short slot place articulated pressure ligulate switch member (16) of the internally toothed annulus (8) of endoporus annulus, press ligulate switch member (16) that both sides are arranged, one side tail end is headed on by plate spring (11), and opposite side and sprocket wheel (3) are had an effect.
4, speed changer of mountain bicycle according to claim 1 is characterized in that backing block (12) is hinged in the framework of support (10) through bearing pin (14).
5, speed changer of mountain bicycle according to claim 1 is characterized in that backing block (12) its lower edge when being positioned at internally toothed annulus (8) the cylindrical short slot place that the endoporus annulus is arranged just coincides with the tongue upper limb of pressing ligulate switch member (16).
6, speed changer of mountain bicycle according to claim 1 is characterized in that disc (22) is fixed on the crank (23).
7, speed changer of mountain bicycle according to claim 1 is characterized in that sun gear (19) sky is enclosed within on the axle of crank (23).
8, speed changer of mountain bicycle according to claim 1 is characterized in that drag hook (17) is hinged in the frame groove of support (25), and its hook length just can catch on the knob of the knob-shaped switch member (18) in sun gear (19) outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94113645A CN1055896C (en) | 1994-11-18 | 1994-11-18 | Speed changer of mountain bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94113645A CN1055896C (en) | 1994-11-18 | 1994-11-18 | Speed changer of mountain bicycle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1113867A CN1113867A (en) | 1995-12-27 |
| CN1055896C true CN1055896C (en) | 2000-08-30 |
Family
ID=5036784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94113645A Expired - Fee Related CN1055896C (en) | 1994-11-18 | 1994-11-18 | Speed changer of mountain bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1055896C (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2055123U (en) * | 1989-06-20 | 1990-03-28 | 俞康元 | Planetary chain wheel type speed change wheel |
| CN2103509U (en) * | 1991-05-23 | 1992-05-06 | 周祯祥 | Simple speed variator for bicycle |
| CN1064058A (en) * | 1991-09-07 | 1992-09-02 | 高杨程 | Automatic speed-changing device for bicycle |
| CN2124867U (en) * | 1992-01-20 | 1992-12-16 | 陈瑞祥 | Multi-function real axle planetary wheel speed variator |
| CN2180584Y (en) * | 1994-02-06 | 1994-10-26 | 周祯祥 | Bicycle speed changing device |
| CN2182787Y (en) * | 1994-02-07 | 1994-11-16 | 杨胡生 | Planetary gear for mountain bicycle for racing use |
-
1994
- 1994-11-18 CN CN94113645A patent/CN1055896C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2055123U (en) * | 1989-06-20 | 1990-03-28 | 俞康元 | Planetary chain wheel type speed change wheel |
| CN2103509U (en) * | 1991-05-23 | 1992-05-06 | 周祯祥 | Simple speed variator for bicycle |
| CN1064058A (en) * | 1991-09-07 | 1992-09-02 | 高杨程 | Automatic speed-changing device for bicycle |
| CN2124867U (en) * | 1992-01-20 | 1992-12-16 | 陈瑞祥 | Multi-function real axle planetary wheel speed variator |
| CN2180584Y (en) * | 1994-02-06 | 1994-10-26 | 周祯祥 | Bicycle speed changing device |
| CN2182787Y (en) * | 1994-02-07 | 1994-11-16 | 杨胡生 | Planetary gear for mountain bicycle for racing use |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1113867A (en) | 1995-12-27 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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 |