CN205186403U - Two wheeler and frame, integrated chassis, chassis main part thereof - Google Patents

Abstract

The utility model provides a two wheeler and frame, integrated chassis, chassis main part thereof. The chassis main part of integrated chassis is including the five -way portion that is used for installing the axis subassembly, the rear axle installation department that is used for installing the back fork portion down of transfer line and is used for installing the rear axle subassembly, minor face part that whole " L " word form that is roughly of chassis main part, edge that should " L " word form and two wheeler central line face vertically direction extend constitutes five -way portion, the one end of five -way portion rather than constituting back fork portion down with 90 degrees the consecutive long limit of angle of intersection part roughly, the part that is in the rear end of fork portion under the back constitutes the rear axle installation department, be formed with along the shaft hole that is arranged in installing the axis subassembly that its extending direction has a perfect understanding in five -way portion, the rear axle installation department is formed to compare more the casing that goes out towards bicycle central line face pleurapophysis with back vent portion, and it has the back shaft hole that is used for installing the rear axle subassembly to open at the central part of this casing, five -way portion and back down between fork portion and/or back down fork portion and rear axle installation department within a definite time by integrated into one piece.

Description

Two-wheel car and vehicle frame, integrated underframe, underframe main body

Technical field

The present invention relates to two-wheel car and vehicle frame, integrated underframe, underframe main body, particularly relate to two-wheel car and vehicle frame, integrated underframe, the underframe main body of conical gear-drive link type of drive.

Background technology

China is the big country that bicycle is produced and used.For a long time, bicycle is always all as the main walking-replacing tool of people's short range trip in same city.Traditional have chain bicycle to be rely on the wheel disc be arranged on axis to be arranged on flywheel on bicycle rear axle by chain-driving, then drive bicycle rear to rotate by flywheel and carry out transmission, although structure is simple, easily de-chain, fall chain; And because running part not easily seals, so frequent clip divided skirt, the machine oil of lubricating chain also can be made dirty clothing, simultaneously because the leak tightness of transmission device is poor, easily wear and tear and corrosion so be exposed to outer drive disk assembly, the life-span of bicycle is correspondingly shortened.Although this kind of driving device being provided with chain cover can overcome above-mentioned shortcoming to a certain extent, but de-chain, the problem falling chain are still difficult to solve, this kind of driving device being simultaneously provided with chain cover take off chain at bicycle, installation and maintenance when falling chain is difficult especially.

For this reason, utilize conical gear (bevel gear)-drive link mechanism as the chain-less bicycle of Power train because having without de-chain, chain breaking problem, can not clip clothing, ooze out greasy dirt, the feature such as durable in use, just be subject to the favor of customer, become desirable traffic of new generation, the walking-replacing tool of body-building.

But at least there is following problem to be improved in the chain-less bicycle of prior art.

First, chassis assembly is too much, and, structure is too complicated, also higher to the requirement of welding in manufacturing process, causes material cost and process costs all higher between each several part normally by welding or bolted joint together.

In addition, because the parts of each axletree are too much, all very loaded down with trivial details in the assembling and detachable maintaining of bicycle, cause manufacturing cost to improve.

In addition, due to drive link relative to center line at an angle with axis, rear axle conical gear is separately meshed, namely, the crossed-axes angle of the conical gear be meshed is not in 90 degree (orthogonal), therefore the conical gear gauge member of crossed-axes angle the most frequently used in mechanical drive 90 degree cannot be adopted, but need the parameters according to concrete crossed-axes angle otherwise designed conical gear, the concrete conical gear be suitable for is processed according to these parameters are special, and in installation process, need the crossed-axes angle in strict accordance with this design to assemble etc., this will cause design cost, tooling cost, assembly cost, the raising of a series of cost such as maintenance cost.

Summary of the invention

The present invention researches and develops in view of above problem, aims to provide that a kind of agent structure is simple, parts are few, is convenient to manufacture, the two-wheel car of the conical gear-drive link type of drive of assembling and maintenance and each assembly, parts.

A scheme of the present invention is the underframe main body of the two-wheel vehicle used integrated underframe of a kind of conical gear-drive link type of drive.Described underframe main body comprises five-way portion for installing Middle shaft assembly, for installing the Chain stay portion of drive link and the rear axle installation portion for installing rear axle assemblies; Described underframe entire body is in roughly " L " shape, the short side part extended along the direction vertical with two-wheel car center line face of being somebody's turn to do " L " shape forms described five-way portion, to divide with the consecutive long leg of roughly 90 angle of cut of spending in the one end in described five-way portion and its and formed described Chain stay portion, the part being in the rear end in described Chain stay portion forms described rear axle installation portion; Be formed along the through central axis hole for installing described Middle shaft assembly of its bearing of trend in described five-way portion; Described rear axle installation portion is formed housing more outstanding towards side, bicycle center line face compared with described rear fork, has the rear axis hole for installing described rear axle assemblies at the central part of this housing; By integrated between described five-way portion and described Chain stay portion and/or between described Chain stay portion and described rear axle installation portion.

By this programme, the underframe main body of the two-wheel vehicle used integrated underframe of conical gear-drive link type of drive that a kind of integrated level is high, intensity is large can be provided.

Can described five-way portion with the position of segment-Facet intersection in described two-wheel car, be formed respectively can with down tube in nested fashion grafting down tube installation portion and the seat pipe installation portion of grafting in nested fashion can be managed with seat.Thereby, it is possible to be convenient to the location assembling of each parts of vehicle frame, and improve its bond strength.

Can be that the other end in described five-way portion protrudes from described two-wheel car center line face.Thus, can guarantee that Middle shaft assembly has enough installing spaces.

It can be the diameter that the width in described Chain stay portion is greater than described central axis hole.Can be that described Chain stay portion leans on the rear end outline in described side, two-wheel car center line face and described five-way portion to seamlessly transit continuously at it.It can also be multiple reinforced rib that described Chain stay portion is formed with the intensity for strengthening its Width.Thereby, it is possible to improve the intensity in Chain stay portion.

Another program of the present invention provides the two-wheel vehicle used integrated underframe of a kind of conical gear-drive link type of drive.This integrated vehicle frame comprises the underframe main body of aforementioned schemes, and throughout described central axis hole to described rear axis hole scope, along the underframe side cover be interlocked perpendicular to direction and the described underframe main body in described two-wheel car center line face.The position corresponding with described rear axle installation portion of described underframe side cover is formed towards the outstanding housing in the opposition side of side, described two-wheel car center line face.Thus, when pulling down underframe side cover, the driving system main bodys such as the conical gear of Middle shaft assembly, drive link are overall, the conical gear of rear axle assemblies, by outside being exposed to completely, are convenient to installation, maintenance or adjustment installation site etc.

Another scheme of the present invention provides the two-wheel vehicle used vehicle frame of a kind of conical gear-drive link type of drive.This vehicle frame comprises: for the head tube of installation car handle; One end is connected to the down tube at the middle part of described head tube; The aforesaid integrated underframe be connected with the other end of described down tube; And one end is connected to the seat pipe for installing vehicle seat of described integrated underframe.

Another scheme of the present invention provides the two-wheel car of a kind of conical gear-drive link type of drive, it uses aforesaid vehicle frame.

In addition, the embodiment after the combination in any of above inscape, manifestation of the present invention being converted between parts, manufacture method, system etc. is also actv. as the solution of the present invention.

Accompanying drawing explanation

In order to understand object of the present invention, feature, advantage and function better, can with reference to the preferred embodiment shown in accompanying drawing.Reference numeral identical in accompanying drawing refers to identical parts.It should be appreciated by those skilled in the art that accompanying drawing is intended to schematically illustrate each embodiments of the invention, in figure, all parts is not drawn in proportion.

Fig. 1 is the schematic diagram of the basic structure of the chain-less bicycle representing prior art, (A) represent chain-less bicycle unitary construction and each parts thereof, (B) represents the schematic configuration relation of its conical gear-drive link transmission device and bicycle middle shaft and rear axle.

Fig. 2 is the block diagram of the major constituents of the chain-less bicycle schematically showing embodiment of the present invention.

Fig. 3 is the figure of the major constituents of the chain-less bicycle schematically showing embodiment of the present invention, (A) be the front view of chain-less bicycle, (B) be the back view of chain-less bicycle, (C) be the left view of chain-less bicycle, (D) is the right elevation of chain-less bicycle.

Fig. 4 is the figure of the configuration structure representing integrated underframe, (A) be the block diagram of integrated underframe, (B) be the birds-eye view of integrated underframe, (C) is the front view of integrated underframe, and (D) is the left view of integrated underframe.

Fig. 5 is the schematic diagram of the structure of the underframe main body representing integrated underframe, and (A) is the front view of underframe main body, and (B) is the birds-eye view of underframe main body, and (C) is the left view of underframe main body.

Fig. 6 is the schematic diagram of the structure of the underframe side cover representing integrated underframe, (A) be the block diagram of underframe side cover, (B) be the back view of underframe side cover, (C) is the birds-eye view of underframe side cover, and (D) is the left view of underframe side cover.

Fig. 7 is the schematic diagram pulled down after underframe side cover for illustration of the mounting means of transmission shaft in integrated underframe.

Fig. 8 is the schematic diagram of the formation of Middle shaft assembly for illustration of embodiment of the present invention, and (A) is the schematic cross sectional views of each parts of Middle shaft assembly, and (B) is the block diagram of the matching relationship of reflection Middle shaft assembly and drive link.

Fig. 9 is the schematic diagram of the formation of the rear axle assemblies representing embodiment of the present invention, (A) be when seeing towards bicycle front, carry out with the sectional elevation at the axis place of rear axle the cutaway view of sectility, (B) is the block diagram of the matching relationship of the conical gear of the rear axle side representing conical gear in rear axle assemblies and drive link.

Figure 10 is the figure of the structure of the flange representing present embodiment, and (A) is the front view of flange, and (B) is the birds-eye view of flange, and (C) is the left view of flange.

Figure 11 is the schematic diagram of the structure of front fork for illustration of embodiment of the present invention, and (A) is the front view of front fork, and (B) is the left view of front fork, and (C) is the block diagram of front fork.

Figure 12 is the figure of the installing condition representing front fork.

Figure 13 is the cutaway view of the formation for illustration of front Shaft assembly.

Figure 14 is the figure of the structure of the wheel hub of the wheel representing embodiment of the present invention, (A) be the front view of wheel hub, (B) be the A-A' direction cutaway view in (A), (C) be after reflection trailing wheel is installed, the figure of the relation of its wheel rim longitudinal plane of symmetry and rear axle assemblies, (D) be after reflection front-wheel is installed, the figure of the relation of its wheel rim longitudinal plane of symmetry and front Shaft assembly.

Figure 15 is the figure of the type of drive of driving system for illustration of embodiment of the present invention.

Detailed description of the invention

Describe structure and the parts thereof of the chain-less bicycle of embodiment of the present invention below with reference to the accompanying drawings in detail, in the following description, if no special instructions, then so-called " bicycle " or " chain-less bicycle " will refer in particular to the chain-less bicycle of conical gear-drive link transmission device.In addition, in the description of the drawings, identical label is marked to substantially identical structure or parts, suitably omit explanation and parts known in those skilled in the art or structure that a part repeats sometimes.In addition, although present invention is described in conjunction with specific embodiment, it should be understood that this description is not intended to the present invention to be limited to described embodiment.On the contrary, this description is intended to cover the replacement that can be included in the spirit and scope of the present invention that are defined by the appended claims, improvement and equivalent.It should be appreciated by those skilled in the art, realize the present invention and do not require these all parts, and under without departing from the spirit and scope of the present invention, any change can be made to the type of these parts and layout.

First, for ease of contrast, essential structure and the transmission device thereof of the chain-less bicycle of prior art is first briefly introduced.

[prior art]

Fig. 1 is the schematic diagram of the basic structure of the chain-less bicycle representing prior art.Wherein, (A) of Fig. 1 represents chain-less bicycle unitary construction and each parts thereof, and (B) of Fig. 1 represents the schematic configuration relation of its conical gear-drive link transmission device and bicycle middle shaft and rear axle.

As shown in (A) of Fig. 1, bicycle 1 is formed primarily of vehicle frame 2, axis 12, rear axle 20, front axle 22, handlebar 14, vehicle seat 15, front-wheel 13, trailing wheel 21, crank and foot-operated 17, and wherein vehicle frame 2 comprises top tube 5, front fork 3, head tube 4, down tube 6, five-way 7, seat pipe 8, Seat stay 9, Chain stay 11.In the Chain stay 11 of side, load the drive link of double headed roller conical gear, the conical gear at its two engages with the conical gear that axis 12 and rear axle 20 are installed respectively, by the power transmission from axis to rear axle, drives rotation of wheel.

As shown in (B) of Fig. 1, traditional chain-less bicycle is ensure the stability of wheel and the balance of load, in bicycle center line face (when namely bicycle is vertically placed, through vertical of the straight line place at handlebar center and vehicle seat center, represent with single dotted broken line in the drawings) both sides there is Chain stay 11a, a 11b respectively, one end of two Chain stays 11a, 11b is connected to the two ends of rear axle respectively roughly symmetrically, the other end is connected to the five-way 7 of collecting axis 12 respectively roughly symmetrically, thus straddles the both sides of trailing wheel 21 in " people " font.

Wherein, the drive link 10 of double headed roller conical gear is equipped with in the Chain stay 11a of center line side (Figure below side), drive link 10 is made up of conical gear 10a, the bar 10b of axis side, the conical gear 10c of rear axle side, its conical gear 10a engages with the conical gear 18 of the end side (being in the homonymy of center line with drive link 10) being arranged on axis 12, rotates with the rotation of conical gear 18; Conical gear 10c engages with the conical gear 19 of the end side (being in the homonymy of center line with drive link 10) being arranged on rear axle 20, when conical gear 10c rotates, drives conical gear 19 to rotate, thus drives wheel 21 to rotate.

In addition, for keeping the conformability of the hand of rotation of axis 12 and rear axle 20, the installation of the conical gear 18 on axis 12 and the conical gear on rear axle 20 is towards being contrary, space is abdicated in order to give trailing wheel 21, match with " people " character form structure of two Chain stay 11a, 11b simultaneously, the inner cone being the conical gear 18 making to be installed on axis 12, towards center line side, makes the inner cone of the conical gear 19 being installed on rear axle 20 towards center line opposition side.Thus, drive link 10 conical gear respective with axis 12, rear axle 20 at an angle relative to center line is meshed, transmission propulsive effort.

But at least there is following problem to be improved in the chain-less bicycle of prior art.First, vehicle frame described above comprises top tube, front fork, head tube, down tube, five-way, seat pipe, Seat stay, Chain stay etc., between each several part normally by welding or bolted joint together, structure is too complicated, also higher to the requirement of welding in manufacturing process, cause material cost and process costs all higher.In addition, because parts are too much, all very loaded down with trivial details in the assembling and detachable maintaining of bicycle, cause manufacturing cost to improve.

In addition, due to drive link relative to center line at an angle with axis, rear axle conical gear is separately meshed, namely, the crossed-axes angle of the conical gear be meshed is not in 90 degree (orthogonal), therefore the conical gear gauge member of crossed-axes angle the most frequently used in mechanical drive 90 degree cannot be adopted, but need the parameters according to concrete crossed-axes angle otherwise designed conical gear, the concrete conical gear be suitable for is processed according to these parameters are special, and in installation process, need the crossed-axes angle in strict accordance with this design to assemble etc., this will cause design cost, tooling cost, assembly cost, the raising of a series of cost such as maintenance cost.

[present embodiment]

For the chain-less bicycle Problems existing of above-mentioned prior art, the invention provides that a kind of parts are few, structure is simple, be convenient to processing and manufacturing and be convenient to the chain-less bicycle of the brand-new design theory of detachable maintaining.It should be noted that, the every technical characteristic of the present invention involved in this specification sheets and effect thereof are only exemplary enumerating, not require that bicycle of the present invention possesses all these characteristic sum effects simultaneously, as required, only can have or several wherein.

(definition in direction)

In the following description, with the bicycle state shown in Fig. 2, namely bicycle vertically stands on the state on ground is benchmark, the direction of court of headstock institute is defined as in " front ", the direction of court of tailstock institute is defined as at " rear ", vehicle left when seeing to headstock front is defined as " left ", vehicle right when seeing to headstock front is defined as " right ", direction is straight up defined as " top ", direction is straight down defined as " below ", the vertical face passing the straight line place at handlebar center and vehicle seat center when overlooking bicycle is defined as bicycle center line face, with this, direction residing for bicycle each several part and position are described.

(bicycle integral structure)

Fig. 2 and Fig. 3 is the figure of the major constituents of the chain-less bicycle schematically showing embodiment of the present invention.Wherein, (A) of Fig. 3 is the front view of chain-less bicycle, and (B) is the back view of chain-less bicycle, and (C) is the left view of chain-less bicycle, and (D) is the right elevation of chain-less bicycle.

As shown in Figure 2 and Figure 3, the chain-less bicycle of embodiment of the present invention mainly comprises vehicle frame 100, front Shaft assembly 200, Middle shaft assembly 300, rear axle assemblies 400, wheel 500 and eliminates graphic handlebar, vehicle seat, crank and ride.Vehicle frame 100 comprises front fork 110, head tube 120, down tube 130, integrated underframe 140, seat pipe 150.Front fork 110 can be connected to one end of head tube 120 around the axial rotation of head tube 120; The other end of head tube 120 is used for installation car (not shown); Head tube 120 is relative with one end of down tube 130 at middle part to be fixedly connected with; The other end of down tube 130 is fixedly connected to the down tube connecting portion of integrated underframe 140 relatively; One end of seat pipe 150 is fixedly connected to the seat pipe jointing part of integrated underframe 140 relatively; The other end of seat pipe 150 is for installing vehicle seat (not shown).In addition, integrated underframe 140 is for having the integration component of five-way, Chain stay and rear axle installation portion function concurrently, and its Chain stay portion exists only in the one-sided of trailing wheel, is single tine structure.Same, front fork 110 is also single tine structure, namely only in the one-sided existence of front-wheel.Be described in detail for each parts forming feature of the present invention one by one below.

(integrated underframe)

Fig. 4, Fig. 5, Fig. 6 are the schematic diagrams of the structure of integrated underframe 140 for illustration of embodiment of the present invention.Fig. 4 is the figure representing that integrated underframe 140 configuration constructs, wherein (A) is the block diagram of integrated underframe 140, (B) be the birds-eye view of integrated underframe 140, (C) is the front view of integrated underframe 140, and (D) is the left view of integrated underframe 140.Fig. 5 is the schematic diagram of the structure of the underframe main body 140a representing integrated underframe 140, and wherein (A) is the front view of underframe main body 140a, and (B) is the birds-eye view of underframe main body 140a, and (C) is the left view of underframe main body 140a.Fig. 6 is the schematic diagram of the structure of the underframe side cover 140b representing integrated underframe 140, wherein (A) is the block diagram of underframe side cover 140b, (B) be the back view of underframe side cover 140b, (C) be the birds-eye view of underframe side cover 140b, (D) is the left view of underframe side cover 140b.In addition, Fig. 7 is the schematic diagram pulled down after underframe side cover 140b for illustration of the mounting means of transmission shaft in integrated underframe 140.

As shown in Figure 4, integrated underframe 140 is formed along the direction fastening perpendicular to bicycle center line face (shown in the single dotted broken line in (B) of Fig. 4) by underframe main body 140a and underframe side cover 140b, is the integration component of the function having five-way, Chain stay and rear axle installation portion concurrently.Integrated underframe 140 entirety is in roughly " L " shape, its short side part forms five-way portion, Chain stay portion is formed with the part on consecutive long limit, five-way portion, the part being in the rear end in Chain stay portion forms rear axle installation portion, and five-way portion and Chain stay portion are integrated with roughly 90 angles of cut of spending consecutive one end (being the left part of the central axis hole in five-way portion in the present embodiment).

As shown in (B) and (C) of Fig. 4, in the Chain stay portion of integrated underframe 140 by middle axle head, have the central axis hole 141 for installing Middle shaft assembly running through five-way portion along the direction (i.e. bicycle left and right directions) vertical with bicycle center line face.Five-way portion with the position of middle segment-Facet intersection, have the down tube installation portion 142 and the seat pipe installation portion 143 outstanding to bicycle back upper place given prominence to respectively to bicycle front upper place.In the present embodiment, down tube installation portion 142 and seat pipe installation portion 143 are respectively ladder circular tube shaped, that is, pipe is large-diameter portion with five-way continuous print one end, and the other end is minor diameter part, large-diameter portion and the stepped transition of minor diameter part.The external diameter of the minor diameter part of down tube installation portion 142 and the diameter compatible of down tube 130 close, and the two can be plugged in together in nested fashion.Similarly, the external diameter of the minor diameter part of seat pipe installation portion 143 and the diameter compatible of seat pipe 150 close, and the two can be plugged in together in nested fashion." match " in this what is called, refer to the directly roughly the same of the two, it can be the internal diameter that the external diameter of minor diameter part is equal to or slightly less than down tube or seat pipe, the two is easily plugged in together, also can be minor diameter part slightly larger than the internal diameter of down tube or seat pipe, make the two interference fit, more improve the intensity of joint.By making the five-way portion of integrated underframe 140 and down tube 130, seat pipe 150 plug, welding if carry out again in this case or riveted joint etc., then can significantly improve the intensity be engaged with each other.

Make the down tube installation portion 142 in the five-way portion of integrated underframe 140 and seat pipe installation portion 143 have minor diameter part respectively in the present embodiment, insert down tube 130 and seat pipe 150, down tube 130 and/or seat pipe 150 can certainly be made in variation to be minor diameter part, in the down tube installation portion in five-way portion that inner sleeve ground inserts underframe 140 and/or seat pipe installation portion, same technique effect can be reached.Down tube installation portion 142 and seat pipe installation portion 143 are not limited to above-described ladder pipe, can also be ladder cylindrical body or column etc., as long as can in nested fashion with the shape of down tube 130 and seat pipe 150 grafting.

In addition, in the present embodiment, down tube installation portion 142 and seat pipe installation portion 143 are given prominence to respectively to bicycle front upper place and bicycle back upper place, after the down tube making to install straight tube-like and seat pipe, and the position that handlebar and vehicle seat can be made finally to be in be convenient to user and ride.But down tube installation portion 142 and seat pipe installation portion 143 are obviously not limited thereto from the direction that five-way portion matrix is outstanding, can towards any direction in center line face, and finally reach handlebar by the curved shape of down tube and seat pipe and vehicle seat is in the object being convenient to the position that user rides.

In addition, as (B) and (D) of Fig. 4, Fig. 5 (B) and (C) shown in, in the right part of the central axis hole 141 in the five-way portion of integrated underframe 140, namely relative to bicycle center line face, with the end of side, place, Chain stay portion opposite side, there is the jut 144 more given prominence to towards this side (being on the right side of bicycle present embodiment) from five-way portion matrix, to make wherein can receive the parts (will describe in detail later) such as bearing, bearing cap shim, oil sealing.In other words, the non-and consecutive one end, Chain stay portion in five-way portion protrudes from bicycle center line face.

As shown in (B) of Fig. 4, integrated underframe 140 has the Chain stay portion extending to rear axle installation portion from the central axis hole in five-way portion.In the present embodiment, the width of the above-below direction in Chain stay portion is the diameter of the central axis hole being greater than five-way portion and the diameter of rear axis hole, thus can strengthen the intensity in Chain stay portion.But when the intensity in Chain stay portion can be guaranteed, also can the width in suitable constriction Chain stay portion.

In addition, Chain stay portion leans on side, center line face to be seamlessly transit continuous print with the rear end side of the root of the seat pipe installation portion 143 in five-way portion at it, thus, five-way portion and Chain stay portion will seamlessly transit in scope wider in the place the most on the front of the outermost profile at central axis hole to the bicycle fore-and-aft direction located the most rearward of the root of seat pipe installation portion continuously integratedly, thus can improve the weight capacity of integrated underframe 140 further.In addition, as shown in (A) of Fig. 5 and (B) of Fig. 5 and (C), in the underframe main body 140a and the underframe side cover 140b inside separately that form this Chain stay portion, be also integrally formed with multiple reinforced rib respectively, thus more can improve the intensity in Chain stay portion.

In addition, as shown in (A) of Fig. 5 and (B) of Fig. 6 and (C), at the two ends in the Chain stay portion of underframe main body 140a, underframe side cover 140b, have respectively for installing axle bearing mount portion 148a, 148b of rotatably supporting drive link.Thus, this is set up in after as shown in Figure 7 by the both ends bearing set in the bar portion of drive link described later, and underframe side cover 140b is utilized the removablies such as bolt be fastened on underframe main body 140a fixing after, can be inner at integrated underframe 140 by drive link overall package, make it not be subject to the impact of external environment condition.Simultaneously, due to underframe side cover 140b throughout central axis hole to the scope of rear axis hole, and underframe side cover 140b is detouchable relative to underframe main body 140a, therefore as shown in Figure 7, after pulling down underframe side cover 140b, the driving system main bodys such as the conical gear of Middle shaft assembly, drive link are overall, the conical gear of rear axle assemblies, by outside being exposed to completely, are convenient to installation, maintenance or adjustment installation site etc.

In addition, as shown in (B) of Fig. 5, the rear axle installation portion of the underframe main body 140a of integrated underframe 140 is formed the housing 146 of towards side, bicycle center line face outstanding (being give prominence to towards bicycle right in the present embodiment).In other words, rear axle installation portion is formed housing more outstanding towards side, bicycle center line face compared with rear fork, has the rear axis hole for installing rear axle assemblies at the central part of this housing.

In addition, as shown in (A) and (C) of Fig. 6, the rear axle installation portion of the underframe side cover 140b of integrated underframe 140 is formed the housing 145 of the opposition side outstanding (being give prominence to towards bicycle left in the present embodiment) towards side, bicycle center line face.As shown in (A) and (B) of Fig. 4, after underframe main body 140a and underframe side cover 140b is fitted together, rear axle installation portion becomes compared to Chain stay portion housing wider on bicycle left and right directions, makes it possible to accommodate rear axle assemblies described later wherein.About this, will describe in detail later.

In addition, the bench-type projection 150 of the Chain stay part of the underframe main body 140a shown in (B) of Fig. 5 is the component of the connection handle for installing roller brake 404 described later, can be the independent component be fixed on by any-modes such as welding on underframe main body 140a, also can be on underframe main body 140a one-body molded go out component.

The underframe main body 140a of the integrated underframe 140 of embodiment of the present invention described above is by five-way portion, single Chain stay portion and the integrated component of rear axle installation portion, the casting of the high-strength metal material such as cast iron, smart steel, aluminum alloy can be adopted to form, also can adopt that reinforced plastic, carbon fiber etc. are firm, the injection of the non-metallic material of lightweight or mould molding form.Certainly, when Joint strenght can be guaranteed, also can only between five-way portion and single Chain stay portion or one-body molded between single Chain stay portion and rear axle installation portion.

This integrated underframe can not only be applicable to the bicycle of present embodiment, can also be applicable to the underframe (five-way and Chain stay etc.) of the two-wheel car such as Electrical Bicycle, motor bike.

(Middle shaft assembly)

Fig. 8 is the schematic diagram of the formation of Middle shaft assembly 300 for illustration of embodiment of the present invention, wherein (A) is the schematic cross sectional views of each parts of Middle shaft assembly 300, and (B) is the block diagram of the matching relationship of reflection Middle shaft assembly 300 and drive link 600.

As shown in (A) of Fig. 8, Middle shaft assembly 300 comprises axis 301, and by from one end of side, drive link 600 place to the order (being order from left to right in the present embodiment) of the other end along the oil sealing 307 of the axial arranging of axis 301, conical gear 302, bearing 304, the shaft shoulder 306, bearing 305, oil sealing 308 and bearing cap shim 303.

Wherein, oil sealing 307 is positioned at inside the spline part of the connecting crank of axis, being fixed in the corresponding site in the central axis hole of underframe side cover 140b, for stopping that the lubricating oil be injected in the drive cavity of axis side described later can not leak, stopping that the dirts such as outside dust enter axis side drive cavity simultaneously.

Conical gear 302 is for being designed to the standard round finishing bevel gear cuter of crossed-axes angle 90 degree, the position spaced apart on axis with oil sealing 307 is configured in towards the mode of oil sealing 307 side by with inner cone, this distance is designed such that oil sealing 307 can not interfere with the rotation of conical gear 602 when conical gear 302 is meshed with the conical gear 602 of drive link 600.

Bearing 304 is close to conical gear 302 and establishes, its inner ring and axis transition fit, and outer ring is relative fixing with the corresponding site flush fit in the central axis hole in the five-way portion of integrated underframe 140.

Thus, the confined space surrounded by the five-way portion of the underframe main body 140a of the bearing 304 on the bearing 603 of the underframe side cover 140b of oil sealing 307, integrated underframe 140, drive link 600, axis 301 and integrated underframe 140 forms axis side drive cavity, and the conical gear 602 of the conical gear 302 that axis 301 is installed and the axis side of drive link 600 is at this axis side drive cavity Inside gear drive.

Bearing cap shim 303 is positioned at inside the spline part of the other end of axis 301, and its peripheral part the mode such as to be threaded connection and to be fixedly connected in the five-way portion inner chamber of the underframe main body 140a of integrated underframe 140.The inside of this bearing cap shim 303 be along axis axially three grades of ladders expanding gradually of internal diameter are poroid from right to left, have oil sealing 308 in the ladder place inner sleeve of central diameter portion and minor diameter part, be mainly used in stop external dust dirt etc. and enter in five-way portion cavity.

In addition, bearing 305 is configured in the position more leaning on side, bicycle center line face than bearing cap shim 303 and oil sealing 308, with bearing 304, inner ring and axis 301 transition fit, outer ring is relative fixing with the corresponding site flush fit in the central axis hole of the underframe main body 140a of integrated underframe 140.Meanwhile, its outer ring is connected to the large-diameter portion side of bearing cap shim 303.

In addition, between bearing 304 and bearing 305, be provided with the shaft shoulder 306, this shaft shoulder 306 is large-diameter portions integrated with axis 301, the stepped portion at its two ends is connected to two bearings 304,305 respective inner ring lateral location respectively, two bearings is kept apart predetermined distance, and making can two dot point axis 301 in the axial direction.In addition, the axial length of the shaft shoulder 306 is designed such that bearing 304 and bearing 305 are in the both sides in bicycle center line face respectively.Thus, the distribution of the stress point of axis more balanced (being dispersed in both sides, bicycle center line face) can be made, thus the intensity that axis is required can be alleviated.

Thus, the position of each parts of Middle shaft assembly 300 is relatively fixing.In addition, the shaft shoulder 306 may not be large-diameter portion integrated with axis 301, but is independently socketed on the cartridge of axis 301.

(rear axle assemblies)

Fig. 9 is the schematic diagram of the formation of the rear axle assemblies 400 representing embodiment of the present invention, and wherein (A) is when seeing towards bicycle front, carries out with the sectional elevation at the axis place of rear axle the cutaway view of sectility; (B) be represent conical gear in rear axle assemblies 400 408 and the block diagram of the matching relationship of the conical gear 605 of the rear axle side of drive link 600, wherein eliminate the diagram of brake 404 and wheel 500.

As shown in (A) of Fig. 9, rear axle assemblies 400 comprises rear axle 401, and by from one end of side, drive link 600 place to the order (being order from left to right in the present embodiment) of the other end along the bearing 409 of the axial arranging of rear axle 401, conical gear 408, the shaft shoulder 407, bearing 406, spacer 405, flange 700 and setscrew nut 402.

Bearing 409 is configured in the end of the side, drive link 600 place of rear axle 401, inner ring and rear axle 401 transition fit, and outer ring is relative fixing with the corresponding site flush fit in the rear axle installation portion of the underframe side cover 140b of integrated underframe 140.

Conical gear 408, for being designed to the standard round finishing bevel gear cuter of crossed-axes angle 90 degree, is adjacent to be fixed on rear axle 401 back to the mode of bearing 409 and bearing 409 by with inner cone.

The shaft shoulder 407 is arranged on the position spaced apart with conical gear 408 on rear axle 401, is integrated large-diameter portion on rear axle 401.As shown in (B) of Fig. 9, this distance is designed such that when the conical gear 605 of the rear axle side of drive link 600 is meshed with the conical gear 408 of rear axle assemblies 400, and this shaft shoulder 407 and its bearing 406 be disposed adjacent can not interfere with the rotation of conical gear 605.

As previously mentioned, bearing 406 and the shaft shoulder 407 are adjacent to configure, and inner ring and rear axle 401 transition fit, outer ring is relative fixing with the corresponding site flush fit in the rear axle installation portion of the underframe main body 140a of integrated underframe 140.One side of the inner ring of this bearing 406 is connected to the shaft shoulder 407, and another side of inner ring is connected to the spacer 405 be socketed on rear axle 401, thus axially being located at rear axle 401.Thus, bearing 406 and bearing 409 are separated certain distance, make it possible to two dot point rear axles 401 in the axial direction.In addition, the position of the decision design shaft shoulder 407, makes bearing 406 be in the position in close bicycle center line face, thus, the main hard point of rear axle 401 can be made consistent with the position of bearing 406 or close, can alleviate the requirement of strength of rear axle 401 and bearing thereof.

Flange 700 is fixed on rear axle 401 with another side of spacer 405 with abutting against, and in the present embodiment, flange 700 and rear axle 401 are interfixed by the mode of Flat dey joint.Specifically, as an example, can be that rear axle 401 is provided with the keyway 403 extended vertically, be provided with the keyway 704 ((A) see Figure 10) of a substantially same width at the inner ring of flange 700 simultaneously, aforesaid bearing 406, spacer 405 and brake as required 404 to be inserted in from that one end of the installing wheel of rear axle 401 and after locating, in the keyway 403 of rear axle 401, fill in flat key, then the keyway 704 of the inner ring of flange 700 is set on rear axle 401 with aiming at flat key.Thus, the Flat dey joint of flange 700 and rear axle 401 can be realized.But flange 700 is not limited thereto with the relatively-stationary mode of rear axle 401, as long as have enough relative constant intensities, also can be splined or interference fit connection etc.

Setscrew nut 402 is screwed in the end of the wheel installation side of rear axle 401, abuts against vertically with flange 700.Thus, flange 700 is clamped from the both sides axially of rear axle 401 by setscrew nut 402 and spacer 405, thus is located in the axial direction.

In the present embodiment, it is relative fixing that flange 700 keeps in circumference by Flat dey joint and rear axle 401, keep in circumference by setscrew nut 402 and the clamping of spacer 405 and rear axle 401 relative fixing, thus it is overall relative with rear axle 401 fixing, rotate with the rotation of rear axle 401, and then be with motor car wheel 500 to rotate in the lump by the Bolt Connection of its flange portion and wheel 500.But when flange 700 is fixed on rear axle 401 in modes such as interference fit, then also can without the need to the location of setscrew nut 402.

In addition, in the present embodiment, have employed roller brake modes, flange 700 also has the function of the inner ring chain wheel of roller brake concurrently.Schematically illustrate a kind of structure being applicable to the flange 700 of present embodiment in Figure 10, (A) is front view, and (B) is birds-eye view, and (C) is left view.As shown in Figure 10, the periphery of flange 700 is provided with flange face 701, which is provided with the mounting hole 702 for installing wheel, is bolted interfixes with wheel 500 described later.At the central part of flange 700, be provided with the chain wheel 703 protruding from flange face 701, this platen 703 is inserted into by the inner ring chain wheel as roller brake modes in roller brake 404 ((A) see Fig. 9).About the specific works principle of roller brake modes and this platen, be known technology, therefore omitted its detailed description at this.In addition, at the central through hole of flange 700, be provided with for the keyway 704 with rear axle 401 Flat dey joint.In addition, roller brake 404 is fixed on integrated underframe 140 by connection handle.

Have employed roller brake modes in the present embodiment, but also can adopt other central brake mode such as disc type, drum-type, armful formula.By the arrangement relation of above-mentioned front Shaft assembly, brake can be made closer to wheel center line face ((C) see Figure 14), i.e. hub centre face, make deceleration and stopping performance better.

(driving system)

Figure 15 is the figure of the type of drive of driving system for illustration of embodiment of the present invention.As shown in figure 15, drive link 600 has the conical gear 602 and 605 being designed to crossed-axes angle 90 degree respectively at two ends, the conical gear 302 and the conical gear 408 that are designed to crossed-axes angle 90 degree respectively with same in Middle shaft assembly 300 and rear axle assemblies 400 are meshed with 90 degree of crossed-axes angles, rotary power from axis 301 is driven to rear axle, drives trailing wheel to rotate.

It should be noted that at this, the conical gear 602 of the side of axle rearward of drive link 600 is the conical gear of band flywheel functions, can only to one direction transferring power.That is, when the propulsive effort from Middle shaft assembly 300 is passed to conical gear 602, conical gear 602 rotates with the rotation of bar 601, and then drives the conical gear 408 of rear axle assemblies 400 to rotate, and transfers a driving force to rear axle, trailing wheel is forwards rotated; But when trailing wheel rearward rotates, conical gear 408 retrograde rotation of rear axle assemblies 400, and then drive conical gear 602 retrograde rotation of drive link 600, but due to the effect of flywheel, now bar 601 does not rotate with conical gear 602, namely conical gear 602 dallies, thus the rotation of trailing wheel can be prevented to be passed to axis.About the realization of flywheel functions, such as, by realizing in prior aries such as bearing inner ring assembling pawl ratchet structures, do not repeat them here.

In embodiments of the present invention, the inner cone (face of gear) of the conical gear 302 as previously mentioned in Middle shaft assembly 300 is towards side, drive link 600 place, and the inner cone (face of gear) of conical gear 408 in rear axle assemblies 400 towards contrary with conical gear 302, towards side, bicycle center line face.Drive link 600 is erected between the respective inner cone of conical gear 302 and 408.Thus, the conical gear 302 in low gear, i.e. Middle shaft assembly 300 can be made closer to the center of axis, make the disperses force of left and right crank (riding) more balanced, moment when axis 301 rotates more is optimized.In addition, make the conical gear 408 in high-speed drive gear, i.e. rear axle assemblies 400 further from the center of rear axle 401, thus with another main stress point of rear axle 401, be namely arranged on rear axle 401 the wheel 500 of the other end higher relative to the symmetry of rear shaft center, thus the stressed of rear axle 401 can be made more to disperse.Meanwhile, also increase the spacing of two bearings of supporting rear axle 401, the requirement to the intensity of axletree in single tine mode situation can be alleviated.

(front fork)

Figure 11 and Figure 12 is the schematic diagram of the structure of front fork 110 for illustration of embodiment of the present invention, wherein (A) of Figure 11 is the front view of front fork 110, (B) of Figure 11 is the left view of front fork 110, and (C) of Figure 11 is the block diagram of front fork 110.Figure 12 is the figure representing that one end of front fork 110 is connected with head tube 120, the other end is equipped with the state of front Shaft assembly described later.

As shown in (C) of Fig. 3, the front fork 110 of embodiment of the present invention is single tine mode, is namely only provided with this front fork in the side of front-wheel.Shown in (B) of Figure 11, front fork 110 entirety is in " コ " shape, that is, the front fork main body 111 extended by edge and the direction of parallel line surface in bicycle, the head tube connecting portion 112 extended along the direction perpendicular to bicycle center line face in one end of front fork main body 111, this three part of front axle installation portion 113 of extending in the direction that the other end court of front fork main body 111 is identical with the bearing of trend of head tube connecting portion 112 are made of one piece.

Be provided with the connecting bore 114 for being connected with head tube 120 at head tube connecting portion 112, head tube 120 to be plugged in this connecting bore 114 and by weld or the mode such as riveted joint relative with front fork 110 fixing.Certainly, this connecting bore 114 also can not be set, directly by weld or front fork 110 is fixed on head tube 120 at this head tube connecting portion 112 by the mode such as riveted joint.

At front axle installation portion 113, have front axle mounting hole 115, for assembling front Shaft assembly described later etc. along the direction perpendicular to bicycle center line face.

As shown in (A) of Figure 11, the width of front fork 110 entirety is all greater than the diameter of front axle mounting hole 115, thus can ensure the intensity of front fork 110.Certainly, when enough intensity can be ensured, the narrowed width of front fork main body 111 part can also be made.In addition, for strengthening the intensity of front fork 110, as shown in figure 12, reinforced rib is provided with at the sections inner side of at least front fork main body 111 of front fork 110.

In addition, as shown in (A) of Figure 11, head tube connecting portion 112 part of front fork 110 is relative to the bearing of trend of front fork main body 111 slightly to a lateral deviation, and make after being connected with head tube 120, front fork main body 111 tilts slightly upward relative to the bearing of trend of head tube 120.In other words, the bearing of trend of front fork main body 111 and the bearing of trend of head tube 120 are certain angle.After this angle is designed such that to take turns in a pre-installation, the height of front and back wheel is consistent.

In addition, front fork due to embodiment of the present invention is single tine mode, namely only this front fork 110 is provided with in the side of wheel, therefore by making front axle installation portion 113 stretch out certain distance towards wheel side, axial space when assembling front Shaft assembly 200 described later in this front axle installation portion can be guaranteed, particularly can guarantee that two bearings 203,205 for two dot point front axles 201 in the axial direction have enough separation distances, make it possible to balance and support front axle 201 better, thus correspondingly can alleviate the requirement of strength of front axle 201 and bearing thereof.About this, also will describe in detail later.

In addition, as shown in (B) of Figure 11 and Figure 12, the bench-type projection 116 of the connection handle of the roller brake 207 for connecting the roller brake modes adopted in present embodiment is also provided with in the inner side of front fork main body 111.Certainly, when not adopting roller brake, this bench-type projection 116 also can not be set.

The structure of wheel fork of the present invention is described above for the front fork of bicycle use, but wheel fork of the present invention is not only applicable to the bicycle of two-wheeled, Electrical Bicycle, motor bike, tricycle, motor-tricycle etc. can also be applicable to, namely, as long as the wheel fork of non-driving wheel, wheel fork of the present invention can be suitable for.In addition, describing wheel fork is in the present embodiment single-wheel fork, but can certainly arrange at the opposite side of wheel the supporting arm being used for supporting wheel.

(front Shaft assembly)

Figure 13 is the cutaway view of the formation for illustration of front Shaft assembly 200, is when seeing towards bicycle rear, carries out with the sectional elevation at the axis place of front axle the cutaway view of sectility.As shown in figure 13, front Shaft assembly 200 comprises front axle 201, and by from one end of side, front fork 110 place to the order (being dextrosinistral order in the present embodiment) of the other end along the jump ring 202 of the axial arranging of front axle 201, bearing 203, the shaft shoulder 204, bearing 205, spacer 206, flange 700 and setscrew nut 208.

Bearing 203 is arranged on the end of the side, front fork 110 place of front axle 201, its inner ring and front axle 201 transition fit, outer ring relative with the corresponding site flush fit in the front axle mounting hole 115 of front fork 110 fixing ((D) with reference to Figure 14).

Jump ring 202 is installed in the outside of the end at bearing 203 place of front axle 201, and bearing 203 is located in the axial direction.

The shaft shoulder 204 is close to bearing 203 and establishes, and be large-diameter portion integrated with front axle 201 in the present embodiment, the side of the side of its one end and the inner ring of bearing 203 abuts against.Thus, bearing 203 is clipped in the middle by jump ring 202 and the shaft shoulder 204, thus is axially located on front axle 201.

Bearing 205 is close to the side of the other end of the shaft shoulder 204 and establishes, its inner ring and front axle 201 transition fit side is connected to the shaft shoulder 204, outer ring relative with the corresponding site flush fit in the front axle mounting hole 115 of front fork 110 fixing ((C) see Figure 14).Thus, bearing 203 and bearing 205 axially being separated by the shaft shoulder 204 at front axle 201, thus two dot point front axles 201 in the axial direction.

Axle sleeve 206 is close to bearing 205 and establishes, and its side is connected to the inner ring side of bearing 205, thus is clipped in the middle by bearing 205 with the shaft shoulder 204, and bearing 205 is located in the axial direction.

Flange 700 is close to axle sleeve 206 and establishes, and abuts against in the axial direction with the side of axle sleeve 206.In the present embodiment, flange 700 and front axle 201 are interfixed by the mode of Flat dey joint.Specifically, as an example, can be that front axle 201 is provided with the keyway 209 extended vertically, be provided with the keyway 704 ((A) see Figure 10) of a substantially same width at the inner ring of flange 700 simultaneously, when mounting flange 700, first in the keyway 209 of front axle 201, fill in flat key, then the keyway 704 of the inner ring of flange 700 is set on front axle 201 with aiming at flat key.Thus, the Flat dey joint of flange 700 and front axle 201 can be realized.But flange 700 is not limited thereto with the relatively-stationary mode of front axle 201, as long as have enough relative constant intensities, also can be splined or interference fit connection etc.

Setscrew nut 208 is screwed in the end of the wheel installation side of front axle 201, abuts against vertically with flange 700.Thus, flange 700 is clamped from the both sides axially of front axle 201 by setscrew nut 208 and spacer 206, thus is located in the axial direction.

In the present embodiment, it is relative fixing that flange 700 keeps in circumference by Flat dey joint and front axle 201, by setscrew nut 208 with the clamping of spacer 206 and to keep in circumference relative fixing with front axle 201, thus it is overall relative with front axle 201 fixing, rotate with the rotation of front axle 201, and then be with motor car wheel 500 to rotate in the lump by the Bolt Connection of its flange portion and wheel 500.But when flange 700 is fixed on front axle 201 in modes such as interference fit, also can without the need to the location of setscrew nut 208.

In the present embodiment, have employed roller brake modes, flange 700 also has the function of the inner ring chain wheel of roller brake as previously mentioned concurrently.Its concrete structure is identical with the flange 700 adopted in aforesaid rear axle assemblies 400, does not repeat them here.In addition, roller brake 207 is fixed on the front fork main body 111 of front fork 110 by connection handle.

Have employed roller brake modes in the present embodiment, but also can adopt other central brake mode such as disc type, drum-type, armful formula.By the arrangement relation of above-mentioned front Shaft assembly, brake can be made closer to wheel center line face, i.e. hub centre face ((D) see Figure 14), make deceleration and stopping performance better.

(wheel hub)

Figure 14 is the figure of the structure of the wheel hub of the wheel 500 representing embodiment of the present invention, (A) be the front view of wheel hub, (B) be A-A' direction (diameter) cutaway view of the wheel hub in (A), (C) be after reflection trailing wheel is installed, the figure of the relation of its wheel rim longitudinal plane of symmetry and rear axle assemblies, (D) be after reflection front-wheel is installed, the figure of the relation of its wheel rim longitudinal plane of symmetry and front Shaft assembly.

As shown in figure 14, the wheel hub of the wheel 500 of embodiment of the present invention is by the wheel rim 501 for mounting tyre, be positioned at the centre of wheel hub, for this wheel hub being installed to the wheel disc (subpanel) 503 on axletree (aforesaid front axle 201 and rear axle 401), and being connected between wheel rim 501 and wheel disc 503, for the spoke 502 supporting wheel rim 501 and forming.Spoke 502 can be fixedly connected between wheel rim 501 and wheel disc 503 as independent parts by modes such as welding, also can be integrated with wheel rim 501, wheel disc 503.

Peripheral part along wheel disc 503 is provided with multiple bolt hole 504, its position is corresponding with multiple mounting holes 702 of aforesaid flange 700 respectively, by being fixed with bolt by the flange 700 of wheel disc 503 with aforesaid front axle 201 and rear axle 401, wheel 500 is just installed in the wheel installation end of front axle 201 and rear axle 401.In the position relative with axletree of the wheel disc 503 of present embodiment, be provided with the knock hole 505 matched with the profile of the setscrew nut being arranged on axletree one end, make the setscrew nut that this knock hole 505 can be coated at axletree end.Thus, location during installing wheel 500 can be made to become easy, and suitably can alleviate the requirement of the fastening strength of the bolt hole 504 of flange 700 and wheel disc 503.Knock hole 505 is blind holes in the present embodiment, can certainly be through hole.

As shown in (B) of Figure 14, the wheel hub of embodiment of the present invention is eccentric wheel, and the bearing of trend of spoke 502 is that α tilts at an angle relative to axial direction, and α is less than 90 degree, and namely spoke not extends along the direction perpendicular to wheel shaft.Thus, make to exist between wheel rim longitudinal plane of symmetry (i.e. hub centre) and the attachment face of wheel disc 503 on the occasion of offset distance d, thus wheel rim longitudinal plane of symmetry is overlapped with bicycle longitudinal plane of symmetry.

By designing the tilt angle alpha of spoke 502, the size of offset distance d can be adjusted, make wheel rim longitudinal plane of symmetry as far as possible near the position of axle center, thus the load of axletree and bearing can be alleviated, the service life of axletree and bearing can be extended, or reduce the requirement of the intensity to axletree and bearing.

As shown in (C) of Figure 14, after mounting after wheel, compared with when not adopting eccentric wheel of the present invention, the wheel rim longitudinal plane of symmetry (in figure shown in single dotted broken line) of wheel drops on the position closer to rear axle 401 center, particularly comparatively close with the installation site of the main supporting-point of rear axle 401, i.e. bearing 406, therefore greatly can alleviate the requirement of strength of rear axle 401 and bearing thereof.

Similarly, as shown in (D) of Figure 14, in a pre-installation after wheel, compared with when not adopting eccentric wheel of the present invention, the wheel rim longitudinal plane of symmetry (in figure shown in single dotted broken line) of wheel drops on the position closer to front axle 201 center, particularly comparatively close with one of main supporting-point of front axle 401, installation site namely near the bearing 205 in bicycle center line face, therefore greatly can alleviate the requirement of strength of front axle 201 and bearing thereof.

In addition, preferred described offset distance d is set and makes when drg (roller brake etc.) of described central brake mode are installed at the periphery place of described spacer (405,206), this drg be in wheel rim longitudinal plane of symmetry or its near, now, the deceleration and stopping performance of drg can be made better.

Be explained above and integrated underframe of the present invention, front fork, driving system, Middle shaft assembly, rear axle assemblies, front Shaft assembly, wheel hub are applicable to the embodiment of the bicycle of the propulsive effort of crank rotation generation axis, but the structure of these parts and annexation thereof also go for the two-wheel car such as Electrical Bicycle, motor bike producing the propulsive effort of axis with motor or driving engine.

Describe the present invention with reference to the respective embodiments described above above, but the present invention is not defined in above-mentioned each embodiment, by the scheme after appropriately combined for the formation of each embodiment or displacement, is also contained in the scope of the invention.In addition, suitably can also to recombinate combination in each embodiment and processing sequence based on the knowledge of those skilled in the art, or apply the distortion such as various design modifications to each embodiment, the embodiment being applied in such distortion also may be within the scope of the present invention.

Although the present invention has described each conception of species in detail, it will be understood by those skilled in the art that for those concepts various amendment and substitute disclosed by the invention entirety instruction spirit under can realize.Those skilled in the art use ordinary skill just can when without the need to realizing in detail in the claims illustrated the present invention when undue experimentation.Be understandable that, disclosed specific concept is only illustrative, is not intended to limit the scope of the invention, and scope of the present invention is decided by the four corner of appended claims and equivalent thereof.

Claims (10)

1. a underframe main body for the two-wheel vehicle used integrated underframe of conical gear-drive link type of drive, is characterized in that,

Described underframe main body comprises five-way portion for installing Middle shaft assembly, for installing the Chain stay portion of drive link and the rear axle installation portion for installing rear axle assemblies;

Described underframe entire body is in roughly " L " shape, the short side part extended along the direction vertical with two-wheel car center line face of being somebody's turn to do " L " shape forms described five-way portion, to divide with the consecutive long leg of roughly 90 angle of cut of spending in the one end in described five-way portion and its and formed described Chain stay portion, the part being in the rear end in described Chain stay portion forms described rear axle installation portion;

Be formed along the through central axis hole for installing described Middle shaft assembly of its bearing of trend in described five-way portion;

Described rear axle installation portion is formed housing more outstanding towards side, bicycle center line face compared with described Chain stay portion, has the rear axis hole for installing described rear axle assemblies at the central part of this housing;

By integrated between described five-way portion and described Chain stay portion and/or between described Chain stay portion and described rear axle installation portion.

2. underframe main body as claimed in claim 1, is characterized in that,

Described five-way portion with the position of segment-Facet intersection in described two-wheel car, be formed can with the down tube installation portion of down tube grafting in nested fashion.

3. underframe main body as claimed in claim 1 or 2, is characterized in that,

Described five-way portion with the position of segment-Facet intersection in described two-wheel car, be formed and can manage the seat pipe installation portion of grafting in nested fashion with seat.

4. underframe main body as claimed in claim 1, is characterized in that,

The other end in described five-way portion protrudes from described two-wheel car center line face.

5. underframe main body as claimed in claim 1, is characterized in that,

The width in described Chain stay portion is greater than the diameter of described central axis hole.

6. underframe main body as claimed in claim 1, is characterized in that,

Described Chain stay portion leans on side, described two-wheel car center line face to be seamlessly transit continuous print with the rear end outline in described five-way portion at it.

7. underframe main body as claimed in claim 1, is characterized in that,

Described Chain stay portion is formed with multiple reinforced rib of the intensity for strengthening its Width.

8. a two-wheel vehicle used integrated underframe for conical gear-drive link type of drive, is characterized in that, comprising:

Underframe main body described in any one of claim 1 to 7, and

Throughout described central axis hole to described rear axis hole scope, along the underframe side cover be interlocked perpendicular to direction and the described underframe main body in described two-wheel car center line face;

The position corresponding with described rear axle installation portion of described underframe side cover is formed towards the outstanding housing in the opposition side of side, described two-wheel car center line face.

9. a two-wheel vehicle used vehicle frame for conical gear-drive link type of drive, is characterized in that, comprising:

For the head tube of installation car handle;

One end is connected to the down tube at the middle part of described head tube;

The according to claim 8 integrated underframe be connected with the other end of described down tube; And

One end is connected to the seat pipe for installing vehicle seat of described integrated underframe.

10. a two-wheel car for conical gear-drive link type of drive, is characterized in that,

Employ vehicle frame as claimed in claim 9.