CN2550254Y

CN2550254Y - Two-way clutch type energy saving driven chain wheel for motorcycle

Info

Publication number: CN2550254Y
Application number: CN 02210849
Authority: CN
Inventors: 刘作才
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-03-27
Filing date: 2002-03-27
Publication date: 2003-05-14
Anticipated expiration: 2012-03-27

Abstract

The utility model discloses a bidirectional clutch type energy-saving driven chain wheel for motorcycles, comprising a wheel rim, a wheel core, an inner dust-proof cover, an outer dust-proof cover, a bidirectional position-control device for rollers, a roller support, and a side friction device of the roller support, which is characterized in that the wheel rim is of plate type, the wheel core is also of plate type, and each wedge working surface of the wheel core, by means of a plurality of rollers, can form a bidirectional locking connection together with a surface of an inner ring groove of the wheel rim. The technical proposal does not include a driving disc of the motorcycle rear wheel, meanwhile a plate type wheel rim of a unidirectional clutch type driven chain wheel is used as the wheel rim, and the wheel core is transformed from a plate type wheel core of a unidirectional clutch type driven chain wheel. The utility model has the advantages of simple structure, convenient manufacture, low production cost, low transformation cost to cars in prior art and other advantages, compared with the bidirectional clutch type driven chain wheels in prior art.

Description

The energy-conservation driven sprocket of a kind of two-way clutch formula motor bike

Technical field

The utility model relates to a kind of motor bike driven sprocket, exactly is the energy-conservation driven sprocket of a kind of two-way clutch formula motor bike.

Background technology

Driven sprocket is the important component part of motor bike power drive system.Traditional driven sprocket is the annular plate body shape member of an one-piece construction, is shaped on sprocket on this member cylindrical, is shaped on one group of connection holes on the circumference of middle part.During assembling, it is fixedly connected by the drive plate of connection holes and motor cycle rear wheel.Use the motor bike ubiquity following problems of this driven sprocket: when the user to quick operating motor bike shift gears deceleration, subtract that oil slows down or when making it the band retaining and sliding, the huge force of inertia of car body always directly acts on the power drive system of being made up of driven sprocket, chain, drive sprocket, change speed gear box, driving engine etc. respectively by trailing wheel, makes it by towing astern.The direct result that this phenomenon causes is: the first, accelerated the rate of wear that power drive system is respectively formed parts; The second, when aforesaid operations is relatively more unexpected, the composition parts, particularly change speed gear box of power system are damaged because of the impact of car body inertia power; The 3rd, the band retaining coasting distance of motor bike is shortened, be unfavorable for fuel saving; The 4th, make operating car body unbalance easily, thereby cause traffic accident.For solving the problems referred to above that traditional driven sprocket exists, comprised in the last few years that many researchers of applicant all carried out number of research projects, and successively proposed improvement project.Up to the present, the driven sprocket after the improvement is divided by functions of use, and mainly can be divided into two classes: a class is an one-way clutch formula driven sprocket, and another kind of is two-way clutch formula driven sprocket.The basic structure characteristics of two class technology all are that wheel body is made the compound type member.Wherein, more representational one-way clutch formula driven sprocket is that the patent No. that the applicant invents is 98237938.2, name is called the utility model patent technology of " a kind of automatic clutch formula motor bike driven sprocket ".This technology mainly is made up of the unidirectional control of wheel rim, core wheel, some rollers and roller position device.Wherein, wheel rim is board-like wheel rim, and it is by being shaped on sprocket on the cylindrical, and the tabular component that inner groove is set in the endoporus constitutes.When wheel rim adopts overall structure form, described inner groove can directly be made in the rim body endoporus, and when wheel rim was made up of with the annular plate-like block body that is arranged on its both sides fluted disc, this inner groove was then formed jointly by the apparent surface of gear ring endoporus and described each block body.Core wheel is board-like core wheel, its constructional feature is: it is provided with an annular multiaspect plate body, be shaped on this plate body periphery and a plurality ofly can make it to form the driving surface that monodirectional locking connects between the inner groove surface with wheel rim by roller, this driving surface constitute core wheel the wedging driving surface, to be provided with it at each place, driving surface place be the roller groove of bottom land, be provided with on the circumference of the middle part of multiaspect plate body and connection holes that the motor cycle rear wheel drive plate matches; Roller can be a cylinder, also can be spheroid; The unidirectional control of roller position device is made of the elastic thrust device.During the assembling driven sprocket, core wheel is positioned at the wheel rim hole; Roller is installed between the roller groove of the inner groove of wheel rim and core wheel; The unidirectional control of roller position device is arranged between roller and the core wheel, and this device can apply an elastic force to roller, makes it to keep the elasticity press contacts with core wheel roller groove and wheel rim inner groove bottom surface all the time.At present,, also there is the people to be provided with cover of dust, and disposed support for roller in each side of sprocket wheel in order further to improve this technology.The use installation method of this driven sprocket is: be fixedly connected by connection holes and the motor cycle rear wheel drive plate that is positioned on the core wheel.At this, if the rotation direction during with the driven sprocket output torque is called anticlockwise direction, so, the work characteristics of this sprocket wheel just can be made following statement: when wheel rim conter clockwise rotating speed during greater than the core wheel rotating speed, forming wedging by roller between wheel rim and the core wheel connects, both rotate synchronously, play the effect identical with existing driven sprocket; And when the conter clockwise rotating speed of wheel rim during less than the core wheel rotating speed, wedging between the two connects and is unlocked, thus make motor bike can do not make its power drive system by the condition of towing astern under art skating.This driven sprocket can only alternately obtain above-mentioned two states in whole use.Owing to can only realize that on a lateral position of the described wedging driving surface of core wheel wedging connects between the wheel rim of this sprocket wheel and the core wheel, so this sprocket wheel is referred to as one-way clutch formula motor bike driven sprocket.Can imagine that thus the motor bike that this sprocket wheel is installed in use will thoroughly be eliminated described towing astern phenomenon.Yet in actual applications, the towing astern phenomenon is not always encircled thing.For example, when motor bike travelled on steep or sliding road surface, the user often wished to keep by towing astern the stationarity of vehicle operating.For this reason, people have invented two-way clutch formula motor bike driven sprocket again.The performance characteristics of this sprocket wheel is to keep on the existing performance basis of one-way clutch formula motor bike driven sprocket, and other has increased can make motor bike obtain the performance of described towing astern state.The constructional feature of such technology is: it is mainly by wheel rim, core wheel, roller and support thereof, and roller bracket side friction device, the two-way control of roller position device is formed.At present, more representational two-way clutch formula motor bike driven sprocket is that the patent No. is 99232531.5, and name is called the utility model patent technology of " motor bike two-way controllable overrunning slide energy economizer ".Though can realize the above-mentioned application target of two-way clutch formula motor bike driven sprocket, also there is certain problem simultaneously in this technology in actual applications.Main performance is: the part that it promptly is loaded with the core of core wheel the wedging driving surface is designed to one with the drive plate of motor cycle rear wheel, thereby forms the very complicated multi-ladder shell type member of structure; Wheel rim then is made up of fluted disc, raceway rings etc. respectively jointly, thereby produces following consequence unavoidably: the first, and the structure more complicated, thereby difficulty of processing is bigger, productive costs is higher; The second, for existing a large amount of motor bike user,, just must abandon original drive plate, thereby increase the vehicle remoulding expense if use this driven sprocket instead.

Summary of the invention

The purpose of this utility model is for people provide a kind of simple in structure, and the energy-conservation driven sprocket of two-way clutch formula motor bike that can be directly matches with the drive plate of existing motor cycle rear wheel, so that overcome the prior art above shortcomings.

The purpose of this utility model is to realize like this, it comprises wheel rim, core wheel, interior outside cover of dust, the two-way control of roller position device, roller bracket, roller bracket side friction device, be characterized in that wheel rim is made of board-like wheel rim, core wheel is made of board-like core wheel, and each wedging driving surface of this core wheel can make it to form the surface formation that two-way locking connects between the inner groove surface with wheel rim by one by roller.

The wedging driving surface of above-mentioned core wheel is made of the face that is arranged on its multiaspect plate body periphery.

The two-way control of above-mentioned roller position device mainly is made of flexure strip, and this flexure strip one end and described roller bracket are fixedly connected, and the other end then with between the described multiaspect plate body forms the elasticity clamping stagnation that can be shifted and connects.

Above-mentioned roller bracket side friction device is arranged in the cover of dust chamber, the described outside, and it mainly is made up of elasticity wedge block, pivoted arm, extension spring, block body, backguy, and described wedge block is formed by the flexure strip system of simmering, and it is fixed by one end and cover of dust; It is hinged to change wall one end and cover of dust, and opposite side then amplexiforms with the wedge surface of elasticity wedge block; The extension spring two ends connect with pivoted arm, cover of dust respectively; The backguy outer end is drawn in the through wires hole of outside cover of dust and is connected with clutch of motorcycle handle or backguy, and the inner then connects with pivoted arm.

The sprocket position of above-mentioned wheel rim is provided with anti-falling device of chain.

After the utility model is realized, owing to no longer relate to the drive plate of motor cycle rear wheel in its composition proposal, adopt the board-like wheel rim of one-way clutch formula driven sprocket simultaneously, core wheel is also formed by the board-like core wheel transformation of one-way clutch formula driven sprocket.Therefore, it is compared with existing two-way clutch formula driven sprocket and has the following advantages: the first, and simple in structure, easily manufactured, productive costs is also very low; The second since the utility model can be directly and the drive plate of existing motor cycle rear wheel match, thereby, when existing motor bike user need change the outfit the utility model, just needn't abandon former car drive plate, thereby can reduce the vehicle remoulding cost, help the utility model and apply.

Description of drawings

Fig. 1 is a front view of the present utility model.

Fig. 2 is that the B of Fig. 1 is to partial view.

Fig. 3 is the A-A part sectional view of Fig. 1.

Fig. 4 is the flexure strip structural representation of roller bracket side friction device.

Fig. 5 is the structural representation of wheel rim fluted disc.

Fig. 6 is the multiaspect plate structure scheme drawing of compound type core wheel.

Fig. 7 is the front view of roller bracket.

Fig. 8 is the birds-eye view of Fig. 7.

Fig. 9 is the another kind of version scheme drawing of wheel rim.

Below in conjunction with accompanying drawing embodiment of the present utility model is done explanation in further detail.

By Fig. 1, Fig. 2 as seen, the utility model is mainly by wheel rim, core wheel, roller, inside and outside cover of dust, and the two-way control of roller position device, roller bracket side friction device, anti-falling device of chain are formed.The concrete make of parts is as follows in addition for each:

Wheel rim: this wheel rim is to be shaped on sprocket on the cylindrical by board-like wheel rim, and the annular plate-like body that inner groove is set in the endoporus constitutes.Fig. 1 provides a kind of specific embodiment of this wheel rim.As seen from the figure, it is made up of fluted disc 1 and two side shields 2 respectively.Wherein fluted disc is made of the planar annular plate, is shaped on sprocket on its cylindrical, is shaped on one group of screw 26 on the disk body; Each baffle plate constitutes by hollow dish-shaped plate.During assembling, each baffle plate is fixedly mounted on each side of fluted disc by connector 15 respectively.After the assembling, form an annular groove between each baffle plate endoporus position body and the gear ring endoporus, this annular groove constitutes the inner groove of turn-taking, the dish of each baffle plate along the position body then mutual group become anti-falling device of chain of the present utility model.Should illustrate, in actual production, anti-falling device of chain is not set also allow.In this case, a kind of version of wheel rim as shown in Figure 9.As seen from the figure, the structural difference of this wheel rim and wheel rim shown in Figure 1 is to constitute at the bottom of its each baffle plate is by the dish of above-mentioned dish-shaped baffle plate, promptly constitutes by the annular arrangement horizontal plate; Another version of wheel rim can also realize like this: each baffle plate 2 among Fig. 9 is made one with gear ring 1, cancel connector 15 simultaneously.Back two kinds of versions of this wheel rim are consistent with the version of existing one-way clutch formula motor bike driven sprocket wheel rim.

Core wheel: this core wheel is made of board-like core wheel, and it is to improve to form on the core wheel basis of existing one-way clutch formula motor bike driven sprocket.Fig. 1, Fig. 2 provide a kind of version of this core wheel.As seen from the figure, this core wheel is combined by multiaspect plate body 7 and the inside and outside block body that lays respectively at its each side respectively.The version of multiaspect plate body is made a plurality of faces 27 and is shaped on the locking groove 28 that matches with the two-way control of roller position device as shown in Figure 6 on this plate cylindrical, make the connection holes 22 that the drive plate of one group of screw 26 and a group and motor cycle rear wheel matches on the wheel body.Wherein, each plane face 27 constitutes the wedging driving surface of core wheel.Should illustrate at this, in actual production, core wheel wedging driving surface can also connect the surface that promptly can make it respectively other shape of connecting with described inner groove locking at two lateral positions and constitutes by making it to form between the inner groove surface with wheel rim two-way locking by roller.For example, cylinder lacks face, " V " shape face that angle is very big etc.Outside block body is that Fig. 1 left side block body 6 is made of the annulus plate body, and inboard block body then constitutes at the bottom of the hollow dish by plate system dish member 16.Be shaped on one group of through hole that matches with the described connection holes that is arranged on the multiaspect plate on each block body respectively.During assembling, each block body is fixedly connected by connector 15 and multiaspect plate body respectively, and make on it each described through hole respectively with the multiaspect plate body on each connection holes align.After the assembling, it is bottom land that the peripheral part of core wheel forms a plurality of each wedging driving surface with the multiaspect plate body, is the notch of trough rim with the local ontology of the described block body that is positioned at this driving surface place, and this notch constitutes the roller groove of core wheel.Should illustrate that at this purpose that dish-shaped member is set in the present embodiment is to make it dual-use material, just make it to constitute wheel in-core block body at the bottom of the hollow dish, play cover of dust effect in the utility model and make it the dish edge, thereby the utility model structure is simplified.Yet in actual production, the interior block body of core wheel fully can be identical with the version of external baffle body 6, promptly is made of an annulus plate body.Just in this case, in of the present utility model cover of dust should be in addition by one independently the annular arrangement plate constitute.During assembling, this cover of dust is arranged on the outside of block body in the annulus plate body shape and makes it to be fixedly connected with the multiaspect plate body by connector.In addition, in the present embodiment, core wheel is that assembly parts is promptly assembled by multiaspect plate body, interior external baffle body respectively.Yet in actual production, inside and outside block body and multiaspect plate body also can be made one.

Roller and roller bracket: roller 5 is made of cylinder in the present embodiment, yet in actual production, it also can be made of spheroid.When it is made of spheroid, the inner groove of wheel rim contacted with it, core wheel roller groove structure also should be made corresponding adjustment, is about to its diagram rectangular cross section shape and changes the scarce shape section form of circle into.The version of roller bracket 4 such as Fig. 7, shown in Figure 8.As seen from the figure, it is made of interior outside Circular Plate body and some

cylinders

23,24 of being fixedly installed between the two plate body opposite flanks respectively.Wherein, cylinder 23 is provided with in pairs, and this each diameter to spacing between the cylinder and roller matches, the contact of both gaps, the locking groove 28 on quantity being set and being positioned at the multiaspect plate of cylinder 24 that quantity is set is identical.When manufacturing roller bracket, the mode of being fixedly connected between each cylinder and the inside and outside circle ring flat-plate body can be riveted joint, also can be welding etc.

The two-way control of roller position device: in the present embodiment, this device is made of the flexure strip 25 that is connected between roller bracket and the core wheel,

cylinder

23,24 removable being fixedly connected of this flexure strip one end and roller bracket, the other end is a free end, this end and locking groove 28 on being arranged on the multiaspect plate body elasticity clamping stagnation that can be shifted connects, the said displacement is meant that the free end of flexure strip 25 just can should end one side move voluntarily to it when presenting relative backward rotation trend because of the external force effect between roller bracket and the core wheel.Should illustrate that in actual production, this device also can adopt the related device of existing two-way clutch formula motor bike driven sprocket.Certainly, also other form can be arranged.

Outside cover of dust: this cover of dust is fixedly connected by lid 3 and interstage sleeve 8 respectively and forms.

Roller bracket side friction device: by Fig. 1, Fig. 3 as seen, this device mainly is made up of elasticity wedge block 13, pivoted arm 12, extension spring 18, bumping post 19, backguy 21.Wedge block is formed by the flexure strip system of simmering, and the one end is fixedly mounted on the lid by connector 20, thus make it and the lid inside face between form wedge shape space; One end of pivoted arm is hinged on the bearing 11 also hinged by this bearing and lid 3 by bearing pin 10, the other end is a free end, and this end body posts and is connected on wedge block 13 outside faces; Extension spring one end is fixed on the lid, and the other end then is fixed on the connecting lever; Backguy one end connects with connecting lever, and the other end then stretches out in the through wires hole that is arranged on the lid and is connected in clutch of motorcycle handle or its backguy.Bumping post is fixed on the lid, is used for the backstop connecting lever, makes it not break away from the elasticity wedge block.In the use, during backguy outward, two kinds of motions just take place in the free end of connecting lever simultaneously: the one, rotate, the 2nd, be that move on Fig. 1 right side to the inside under the elastic force effect of elasticity wedge block, and then with the exterior annular plate press contacts of roller support, form friction force between the two, thereby roller bracket is applied rotational resistance torque.Should illustrate that in actual production, this device also can have other version.For example, it can also be made up of the upper and lower voussoir of extension spring, backguy, bumping post, mutual adapted.During assembling, lower wedge block is fixed on the lid medial surface by the direction that is provided with of diagram elasticity wedge block, and make its big end relative with the lateral surface position of the outside annulus plate body of roller bracket, slideway by adapted between last voussoir and the lower wedge block connects, and make its small end be positioned at big end one side of lower wedge block, both inclined-planes are relative, make in last voussoir small end simultaneously and are convenient to and the contacted driving surface of roller bracket exterior annular plate body; Bumping post is fixed on the lid and is positioned at the big end of the voussoir outside, is used for voussoir on the backstop, prevents that it breaks away from lower wedge block; The extension spring two ends are fixedly connected with lid, the last big end of voussoir respectively; Backguy is inner to be connected with last voussoir small end, stretches out in the through wires hole that the other end is then made on lid and links with clutch of motorcycle handle or backguy.

After the assembly of above-mentioned wheel rim and anti-falling device of chain, roller, roller bracket, core wheel and interior dust-proof cover, the two-way control of roller position each parts of device are got all the ready, its assembling is just formed main element of the present utility model together by Fig. 1, Fig. 2, Fig. 3.Should guarantee in the installation to rotate flexibly between roller and support thereof and wheel rim, the core wheel.

Use installation method of the present utility model is: make the core wheel medial surface be the drive plate outer face of Fig. 1 right flank and motor cycle rear wheel amplexiform and by the connection holes 22 of core wheel and with it the connector 9 of adapted main element of the present utility model is connected firmly on described drive plate; Interstage sleeve 8 by outer cover of dust is placed on the assembly of outer cover of dust and roller bracket side friction device on the wheel shaft of motor cycle rear wheel and by shaft end nut both is fixedly connected again.

Principle of work of the present utility model is as follows:

When wheel rim along the clockwise rotating speed of Fig. 2 during greater than the core wheel rotating speed, for example when the motor bike gearshift quicken, when oil supply is quickened, roller just under wheel rim drives to the one side fine motion of the C position of Fig. 2, thereby make between wheel rim and the core wheel by wedging, formation is fixedly connected.And rotate synchronously, thereby play the effect identical with existing sprocket wheel; And when wheel rim along the clockwise rotating speed of Fig. 2 during less than the core wheel rotating speed, for example when the motor bike gearshift is slowed down, is subtracted the oil deceleration or is with retaining to slide, roller just under core wheel drives to the direction fine motion that deviates from the C position and be located under the effect of roller bidirectional control device between two of C, the D, be unlocked thereby wheel rim is connected with wedging between the core wheel, both rotate relatively freely.At this moment, motor bike just can not make its power system by the situation art skating of towing astern.Slide in the process at this, if meet extraordinary circumstances by chance, for example road surface, the place ahead more suddenly or more sliding, when the user need improve vehicle smoothness by described towing astern effect, can spur the backguy of roller bracket side friction device, making it to draw commentaries on classics to turn round arm is the outside Circular Plate press contacts of free end end and roller bracket until its thrust collar, thereby roller bracket is applied friction drag, and then make roller can overcome the elastic thrust of two-way control position device, to the one side fine motion of the D position of Fig. 2, and make wedging between wheel rim and the core wheel, formation is fixedly connected, rotate synchronously, and then make motor bike obtain the towing astern state.Said process can repeat.

Claims

1, the energy-conservation driven sprocket of a kind of two-way clutch formula motor bike, it comprises wheel rim, core wheel, interior outside cover of dust, the two-way control of roller position device, roller bracket, roller bracket side friction device, it is characterized in that wheel rim is made of board-like wheel rim, core wheel is made of board-like core wheel, and each wedging driving surface of this core wheel can make it to form the surface formation that two-way locking connects between the inner groove surface with wheel rim by one by roller.

2, the energy-conservation driven sprocket of a kind of two-way clutch formula motor bike according to claim 1 is characterized in that the wedging driving surface of described core wheel is made of the face that is arranged on its multiaspect plate body periphery.

3, the energy-conservation driven sprocket of a kind of two-way clutch formula motor bike according to claim 1, it is characterized in that the two-way control of described roller position device mainly is made of flexure strip, this flexure strip one end and described roller bracket are fixedly connected, and the other end then with between the described multiaspect plate body forms the elasticity clamping stagnation that can be shifted and connects.

4, the energy-conservation driven sprocket of a kind of two-way clutch formula motor bike according to claim 1, it is characterized in that described roller bracket side friction device is arranged in the cover of dust chamber, the described outside, it mainly is made up of elasticity wedge block, pivoted arm, extension spring, block body, backguy, described wedge block is formed by the flexure strip system of simmering, and it is fixed by one end and cover of dust; It is hinged to change wall one end and cover of dust, and opposite side then amplexiforms with the wedge surface of elasticity wedge block; The extension spring two ends connect with pivoted arm, cover of dust respectively; The backguy outer end is drawn in the through wires hole of outside cover of dust and is connected with clutch of motorcycle handle or backguy, and the inner then connects with pivoted arm.

5, according to the energy-conservation driven sprocket of the described a kind of two-way clutch formula motor bike of claim 1 to 4, it is characterized in that the sprocket position of described wheel rim is provided with anti-falling device of chain.