CN102673713A

CN102673713A - Bicycle driving device

Info

Publication number: CN102673713A
Application number: CN2011100630483A
Authority: CN
Inventors: 陈柏诚
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-03-16
Filing date: 2011-03-16
Publication date: 2012-09-19

Abstract

The invention discloses a bicycle driving device, which comprises a shell, a fixed seat, a first clutch, a second clutch, a plurality of first driving components, a plurality of second driving components and at least one elastic component. A plurality of teeth are arranged on the inner diameter of the shell. A tooth groove is formed between every two teeth. After the first driving components, the second driving components and the elastic component are combined on the fixed seat, each first driving component and each second driving component form an inclined angle under a natural state without external force through the elastic force of the elastic component. After the first clutch and the second clutch are mutually combined, the first clutch and the second clutch are then combined on the seat body of the fixed seat, so as to enable the first clutch and the second clutch not to rotate relatively and to rotate relative to the seat body. During relative rotation, a lifting plate which is arranged on the second clutch limits the first driving components and the second driving components, so as to control the first driving components and the second driving components to lift the tooth grooves of the shell at the same time to enable the shell to bi-directionally drive the fixed seat.

Description

Bicycle driving device

Technical field

The present invention relates to a kind of bicycle rear vehicle shaft that is used to be installed in, let the user can adjust the bi-directional drive wheel shaft easily, or the actuating device of unidirectional drive wheel shaft.

Background technology

Sprocket wheel and back sprocket wheel before general transmission mechanism of bicycle includes, preceding sprocket wheel is located at vehicle frame the place ahead, and its center shaft two ends connect a pedal respectively, sprocket wheel rotation before can driving during rider's both feet pedal.Back sprocket wheel then is flower-drum one side of being located at rear wheel, back sprocket wheel and preceding chain wheel set unification chain; During the sprocket wheel rotation, drive back sprocket wheel rotation synchronously via chain, and then make the rear wheel rotation of being fixed in the back sprocket wheel before driving when rider's pedal, drive bicycle and go forward; Bicycle with speed changing function then is that the sprocket wheel that is converted into different-diameter by the switching chain produces needed revolution ratio with the back chain wheel set formation step shape of a plurality of different-diameters.In other words, general bicycle is to be driven and turned round by the actuating device of being located at the rear wheel wheel shaft.

Existing bicycle driving device includes two kinds haply: first kind is the unidirectional drive device, and second kind is bidirectional driving apparatus, and two kinds can't be installed existence simultaneously.The structure of unidirectional drive device is the flower-drum set inside single direction ratchet mechanism at the back sprocket wheel, when the knight drives bicycle, only can drive wheel shaft toward the place ahead pedal and rotate forward; When pedal rotates backward, then make rear vehicle shaft generation idle running and can't drive one of labour-saving design when this provides the knight to drive for Regular Bicycle via ratchet device.

Bidirectional driving apparatus then is that the flower-drum inside of back sprocket wheel is not provided with single direction ratchet mechanism, but flower-drum is directly linked the back sprocket wheel, when the knight drives bicycle, no matter toward the place ahead pedal or past rear pedal, all can drive wheel shaft and rotate forward or backward; In other words, the ratio of revolution of pedal and rear wheel is 1: 1, and it is suitable for motion or use in the stunt field.

Currently popular in the field of cycling "FIXED? GEAR" Bicycles, is a no-set one-way ratchet mechanism, the pedal and the rear wheels turn ratio of 1:1, and the design of the braking device is not set; knight rider this kind of bicycle, it would be an appropriate time to stop pedaling leaving deadlock fixed rear wheels, brakes, using only the inertia of bicycle tire friction with the ground so leaving the car forward, take a bike rider can make some stunts, movement to achieve special effects.

Owing to there is not the bicycle of single direction ratchet mechanism when driving, to require great effort very much; There is not brake gear to have certain danger again; Therefore mostly be adapted at specific WORKING ON THEFLAT; The knight rides this kind bicycle to the road in this specific place not only inefficent from family, the potential danger of also deriving because of changeableization of road conditions easily.Based on this; Some " FIXED GEAR " bicycle is provided with single direction ratchet mechanism respectively and single direction ratchet mechanism is not set in the wheel shaft both sides of rear wheel at present; When knight's desire should " FIXED GEAR " bicycle drives as general effort-saving bicycle, can the single direction ratchet mechanism of rear wheel one side be connected with chain to drive its unidirectional rotation; When arriving specific place and desire to use as " FIXED GEAR " bicycle, then can rear wheel be unloaded also conversion direction, again chain is connected the sprocket wheel that the rear wheel opposite side is not provided with single direction ratchet mechanism.

Aforementioned up-to-date " FIXED GEAR " is though the drive pattern that bicycle can the conversion rear wheel; But because install again after must rear wheel being unloaded conversion direction, so very inconvenient.

Summary of the invention

The objective of the invention is to solve in the prior art can the conversion drive pattern " FIXED GEAR " bicycle, when carrying out the conversion of type of drive, must with rear wheel unload and conversion direction after the trouble and inconvenience of installing again.

Characteristic of the present invention is that the rear wheel wheel shaft at bicycle is provided with and can switches actuating device unidirectional or the bi-directional drive pattern by rotation mode.

Technological means of the present invention includes a shell, a permanent seat, a first clutch, a second clutch, a plurality of first drive assembly, a plurality of second drive assembly and at least one elastic parts; Outer case inner diameter is provided with a plurality of lobes, forms a teeth groove between two lobes; Said first drives assembly, second drive assembly and be combined in permanent seat with elastic parts after, utilize the elastic force of elastic parts make this first drive assembly and the second drive assembly do not receive under the state of nature of external force inclined; After making up each other, first clutch and second clutch be combined in the pedestal of permanent seat again; First clutch and second clutch can't be rotated relatively; But first clutch and second clutch can rotate with this pedestal relatively, in the rotary course, drive assembly and second by the moving plate of being located at second clutch to first and drive assembly generation restriction relatively; And then control first and drive assembly and second and drive assembly simultaneously to the teeth groove of sincere shell; Make this permanent seat of shell ability bi-directional drive, also may command first drives assembly or second and drives the teeth groove that assembly does not support sincere shell simultaneously, makes shell this permanent seat of unidirectional drive clockwise or counterclockwise.

The present invention is provided with a plurality of projections and a plurality of these projection both sides and axially extended groove of being adjacent at the pedestal external diameter of permanent seat; The end that the first drive assembly and second drives assembly has the support that the activity of being used for is matched with this groove; Said projection is provided with at least one groove radially; The first drive assembly and second drives assembly and is provided with the ditch seam, and aforementioned elastic parts is a loop shaped, and the elastic parts of this loop shaped is combined in the groove of projection; And first drive in the ditch seam that assembly and second drives assembly, makes first to drive the pedestal external diameter that assembly and the second drive assembly are installed in permanent seat.

As a kind of selectable embodiment; The present invention is provided with a plurality of blocks at the periphery of first clutch, and each block is provided with a plurality of positioning teeths, and said permanent seat is provided with at least one positioning convex portion; This positioning convex portion is matched with this positioning teeth; When permanent seat and first clutch rotated relatively, said positioning convex portion elasticity between said positioning teeth was beated, and switched to unidirectional or the bi-directional drive pattern with auxiliary perception.

As a kind of selectable embodiment; The present invention is provided with iner ledge in through hole one side of second clutch; This iner ledge is provided with at least one locating piece, and the external diameter of said first clutch is provided with a stop edge, and this stop edge is provided with at least one pair of should locating piece and can intermeshing locating notch; By the engagement of this locating piece and locating notch, make first clutch and second clutch make up formation afterwards each other and fix and can't rotate relatively.

The present invention is provided with a flange at said permanent seat; This flange is provided with a spacing breach; Said second clutch is provided with one and is engaged in the interior spacing protuberance of this spacing breach, so that this first clutch and the second clutch limit with respect to permanent seat cw or left-hand revolution angle to be provided.

The present invention is provided with external screw thread at the pedestal external diameter of said permanent seat, after this pedestal is combined in the shell from a side of shell, with one have internal screw thread enclosing cover from sealed this external screw thread of the other end of this shell, and then permanent seat is combined in shell.

The present invention can be provided with inner edge in the relative both sides of outer case inner diameter; And between the inner edge of second clutch one side and shell one side; And between the inner edge of enclosing cover one side and shell opposite side, a plurality of balls are set respectively, to provide shell with respect to second clutch and the sliding suitable rotation of enclosing cover.

Description of drawings

Fig. 1 is for showing the embodiment block diagram of actuating device surface structure of the present invention.

Fig. 2 is the embodiment three-dimensional exploded view of the primary clustering syntagmatic of demonstration actuating device of the present invention.

Fig. 3 is the embodiment plan sketch of the containment structure of demonstration actuating device of the present invention.

Fig. 4 A and Fig. 4 B show the forward sight and the schematic side view of the fixed seat structure of actuating device of the present invention respectively.

Fig. 5 is the embodiment plan sketch of the first clutch structure of demonstration actuating device of the present invention.

Fig. 6 A and Fig. 6 B show the forward sight and the schematic side view of the second clutch structure of actuating device of the present invention respectively.

Fig. 7 A and Fig. 7 B show the forward sight and the schematic top plan view of the drive unit construction of actuating device of the present invention respectively.

Fig. 8 A and Fig. 8 B show the forward sight and the schematic side view of the outer cover structure of actuating device of the present invention respectively.

But Fig. 9 A and Fig. 9 B show rotation actuating device of the present invention respectively and are adjusted to the embodiment scheme drawing of shell bi-directional drive permanent seat rotation.

But Figure 10 A and Figure 10 B show rotation actuating device of the present invention respectively and are adjusted to the embodiment scheme drawing of shell conter clockwise drive fixing seat rotation.

But Figure 11 A and Figure 11 B show rotation actuating device of the present invention respectively and are adjusted to the embodiment scheme drawing of shell cw drive fixing seat rotation.

The specific embodiment

Those skilled in the art below cooperate Figure of description that embodiment of the present invention is done more detailed explanation, so that can implement after studying this specification sheets carefully according to this.

Consult Fig. 1 and shown in Figure 2; Bicycle driving device provided by the invention, its preferred embodiment includes: a shell 1, a permanent seat 2, a first clutch 3, a second clutch 4, a plurality of first drive assembly 5A, a plurality of second and drive assembly 5B, at least one elastic parts 6, a plurality of ball 7 and an enclosing cover 8.Consult Fig. 2 and shown in Figure 3 simultaneously, wherein, shell 1 has a circular cylinder body 11, and the external diameter of cylindrical shell 11 can distribute a plurality of sprockets 12 to constitute a sprocket wheel, and the internal diameter of cylindrical shell 11 is provided with and forms a teeth groove 14 between a plurality of lobe 13, two lobes 13; The relative both sides of the internal diameter of shell 1 are provided with inner edge 15, and a plurality of balls 7 can place the inner edge 15 of shell 1 both sides.

Consult shown in Fig. 2, Fig. 4 A and Fig. 4 B; Permanent seat 2 of the present invention has a columnar pedestal 21; The external diameter of pedestal 21 is provided with external screw thread 24, and is provided with a plurality of projections 22 that equal angles distributes that are at pedestal 21 external diameters, and the same position of each projection 22 is equipped with groove 221 radially; The external diameter of pedestal 21 also is provided with and is adjacent to each projection 22 relative both sides and axially extended arc groove 23; The end face of permanent seat 2 is provided with a plurality of positioning convex portion 27 of axially giving prominence to and be the equal angles distribution; Permanent seat 1 is provided with a flange 25, and this flange 25 is provided with the spacing breach 26 of a suitable length; The internal diameter of pedestal 21 is provided with the negative thread 28 that is used for being locked in the bicycle rear shaft (not shown).

Consult Fig. 2 and shown in Figure 5, first clutch 3 of the present invention is one to have the ring bodies of centre hole 30, and the periphery of this ring bodies is provided with a plurality of blocks 31 that equal angles distributes that are, be provided with on each block 31 a plurality of can with aforementioned positioning convex portion 27 ingear positioning teeths 311; The periphery of first clutch 3 is provided with a plurality of locating notchs 321; Centre hole 30 is capable of being combined in projection 22 peripheries of permanent seat 2.

Consult shown in Fig. 2, Fig. 6 A and Fig. 6 B, second clutch 4 of the present invention is for having the ring bodies of a through hole 40, and the periphery of this ring bodies is provided with a plurality of axially outstanding moving plates 41; Internal diameter one side of second clutch 4 is formed with iner ledge 41, and this iner ledge 41 is provided with the locating piece 421 of the locating notch 321 of a plurality of axially outstanding and corresponding firsts clutch 3; The relative opposite side of internal diameter is formed with the recessed edge 43 of first arc; The internal diameter appropriate location of second clutch 4 also is provided with the spacing protuberance 44 that is used for being matched with in the spacing breach 26 of permanent seat 2, so that the first clutch 3 and the limit of second clutch 4 with respect to permanent seat 2 cws or left-hand revolution angle to be provided.

Consult shown in Figure 2ly, of the present invention first to drive assembly 5A be identical structure with the second drive assembly 5B, but the direction that both are installed on the pedestal 21 of permanent seat 2 is opposite each other and symmetrical; Fig. 7 A and Fig. 7 B only drive assembly 5A with first and elaborate.Said first drives assembly 5A has a pawl body 51; One end of this pawl body 51 has and forms cambered surface and be matched with the support 52 of the groove 23 of pedestal 11 external diameters to be used for activity; The pawl body 51 relative other ends are the sincere end 511 that supports that omits the tool wedge angle, and the length direction outside face of pawl body 51 is formed with ditch seam 53.

Said elastic parts 6 is a loop shaped at embodiments of the invention, and the groove 221, first that its cross section diameter can be housed inside projection 22 drives in the ditch seam 53 of the assembly 5A and the second drive assembly 5B.

Fig. 2, Fig. 8 A and Fig. 8 B show that the internal diameter of enclosing cover 8 of the present invention is provided with internal screw thread 81, and are formed with the recessed edge 82 of second arc at the periphery of enclosing cover 8 one sides.

The array mode of aforementioned each assembly; Be to drive assembly 5A and the support 52 of the second drive assembly 5B with first to insert respectively in the groove 23 of pedestal 21 of permanent seat 2; After making the first drive assembly 5A and the second drive assembly 5B be symmetry; Again elastic parts 6 is inserted in the groove 221 of projection 22, and first drive the ditch seam 53 that assembly 5A and second drives assembly 5B, put on first by the elastic force of elastic parts 6 and drive the assembly 5A and the second drive assembly 5B; The pawl body 51 that lets the first drive assembly 5A and second drive assembly 5B is to tilt an angle, even also support sincere end 511 towards the direction in contrast to pedestal 21 outside faces.After the first drive assembly 5A and the second drive assembly 5B are combined in permanent seat 2; In regular turn pedestal 21 is passed the centre hole 30 of first clutch 3 and the through hole 40 of second clutch 4 again; And then make the positioning convex portion 27 of being located at permanent seat 2 mesh the positioning teeth 311 of firsts clutch 3; And locating piece 421 engagement locating notchs 321; Thus, between first clutch 3 and the second clutch 4 because locating piece 42 with locating notch 321 engagements and can't rotate relatively, but because of centre hole 30 and through hole 40 and pedestal 21 make for activity cooperates first clutch 3 and second clutch 4 can be synchronously and pedestal 21 rotate relatively.When first clutch 3 and second clutch 4 synchronous cws or left-hand revolution; Moving plate 41 is along with moving; And then can apply application force to the first drive assembly 5A or the second drive assembly 5B; One of them is pressed into the below of moving plate 41 to make the first drive assembly 5A or second drive assembly 5B, or the first drive assembly 5A or second drives the below that assembly 5B all is not pressed into moving plate 41.

After the inner edge 15 of shell 1 one sides is inserted a plurality of balls 7; The permanent seat of more aforementioned combination being accomplished 2, first clutch 3, second clutch 4, first drive assembly 5A and drive assembly 5B with second and penetrate its internal diameter from a side of shell 1, make the recessed edge 43 of first arc of ball 7 contact inner edges 15 and second clutch 4; Also insert a plurality of balls 7 at the inner edge 15 of shell 1 relative opposite side then; Again the internal screw thread 81 of enclosing cover 8 is locked in the external screw thread 24 of the pedestal 21 that passes shell 1; And then make ball 7 contact inner edge 15 and the recessed edge 82 of second arc, to accomplish the assembling of actuating device of the present invention.28 of the negative threads of permanent seat 2 are in order to be locked together in bicycle rear shaft.

Fig. 9 A and Fig. 9 B show the operating mode when the present invention makes bicycle carry out the bi-directional drive pattern; Rotate first clutch 3 and second clutch 4 simultaneously; Make positioning convex portion 27 at the beat midway location of backward shift to positioning teeth 311 of a plurality of positioning teeth 311 elasticity; The drive assembly 5A and the second drive assembly 5B did not all receive 41 restrictions of moving plate and can utilize the elastic force of elastic parts 6 to make its pawl body 51 perks this moment first, and then made it support the teeth groove 14 that sincere end 511 props up shell 1, therefore; When the sprocket 12 of shell 1 receives chain (not shown) cw or conter clockwise driving, all can drive permanent seat 2 cws or the left-hand revolution that are linked to hind axle.

Figure 10 A and Figure 10 B show the operating mode when the present invention makes bicycle carry out the conter clockwise drive pattern; Rotate first clutch 3 and second clutch 4 simultaneously; Make positioning convex portion 27 in the beat right end position of backward shift to positioning teeth 311 of a plurality of positioning teeth 311 elasticity; Driving assembly 5B this moment second receives 41 restrictions of moving plate and is pressed into moving plate 41 belows; Do not receive 41 restrictions of moving plate and can utilize the elastic force of elastic parts 6 to make its pawl body 51 perks but first drives assembly 5A, and then make it support the teeth groove 14 that sincere end 511 props up shell 1, therefore; When the sprocket 12 of shell 1 receives the driving of chain conter clockwise, can drive permanent seat 2 left-hand revolutions that are linked to hind axle; But when the sprocket 12 of shell 1 receives the driving of chain cw, then, dally so produce because the first drive assembly 5A supports sincere teeth groove 14.

Figure 11 A and Figure 11 B show the operating mode when the present invention makes bicycle carry out the cw drive pattern; Rotate first clutch 3 and second clutch 4 simultaneously; Make positioning convex portion 27 at the beat left position of backward shift to positioning teeth 311 of a plurality of positioning teeth 311 elasticity; Driving assembly 5A this moment first receives 41 restrictions of moving plate and is pressed into moving plate 41 belows; Do not receive 41 restrictions of moving plate and can utilize the elastic force of elastic parts 6 to make its pawl body 51 perks but second drives assembly 5B, and then make it support the teeth groove 14 that sincere end 511 props up shell 1, therefore; When the sprocket 12 of shell 1 receives the driving of chain cw, can drive permanent seat 2 clickwises that are linked to hind axle; But when the sprocket 12 of shell 1 receives the driving of chain conter clockwise, then, dally so produce because the second drive assembly 5A supports sincere teeth groove 14.

The above is merely in order to explain preferred embodiment of the present invention; Be not that attempt is done any pro forma restriction to the present invention according to this; Therefore, all have in that identical creation spirit is following do relevant any modification of the present invention or change, all must be included in the category that the invention is intended to protect.

Claims

1. a bicycle driving device is characterized in that, comprising:

The shell of one circle, its internal diameter is provided with a plurality of lobes, forms a teeth groove between two lobes;

One permanent seat has a pedestal, and the end face of this permanent seat is provided with at least one positioning convex portion;

A plurality of have drive assemblies to first of sincere end and drive assemblies with second, this first drive assembly and second drive assembly in pairs and ground in the opposite direction activity be located at the pedestal external diameter of this permanent seat;

At least one elastic parts is located at the pedestal of this permanent seat, and said elastic parts makes this first drive assembly and second and drive assembly and do not receiving under the state of nature of external force by its elastic force, makes this support sincere end towards the direction in contrast to pedestal with being inclination one angle;

One first clutch is a ring bodies, the periphery of this ring bodies be provided with a plurality of can with this positioning convex portion ingear positioning teeth;

One second clutch, for having the ring bodies of a through hole, the periphery of this ring bodies is provided with a plurality of moving plates;

After making up each other, said first clutch and second clutch be combined in the pedestal of said permanent seat again; This first clutch and second clutch can't be rotated relatively; But first clutch and second clutch can rotate with this pedestal relatively; In the rotary course, this positioning convex portion elasticity between said positioning teeth is beated relatively, cooperates said moving plate this first drive assembly and second to be driven the restriction of assembly; And then control this and first drive assembly and second and drive assembly simultaneously to the teeth groove of sincere this shell; Make this shell can this permanent seat of bi-directional drive, or control this and first drive assembly or second and drive the teeth groove that assembly does not support sincere this shell simultaneously, make this shell can this permanent seat of unidirectional drive.

2. bicycle driving device as claimed in claim 1; It is characterized in that; The pedestal external diameter of said permanent seat is provided with a plurality of projections and a plurality of these projection both sides and axially extended groove of being adjacent to, and the end that the said first drive assembly and second drives assembly has the support that the activity of being used for is matched with this groove, and said projection is provided with at least one groove radially; The said first drive assembly and second drives assembly and is provided with the ditch seam; Said elastic parts is a loop shaped, and the elastic parts of this loop shaped is combined in the groove of this projection, and this first drive assembly and second drives in the ditch seam of assembly.

3. bicycle driving device as claimed in claim 1 is characterized in that the periphery of said first clutch is provided with a plurality of blocks, and each block is provided with a plurality of said positioning teeths.

4. bicycle driving device as claimed in claim 1; It is characterized in that; Centre hole one side of said second clutch is provided with iner ledge; This iner ledge is provided with at least one locating piece, and the external diameter of said first clutch is provided with a stop edge, and this stop edge is provided with at least one pair of should locating piece and can intermeshing locating notch.

5. bicycle driving device as claimed in claim 1 is characterized in that said permanent seat is provided with a flange, and this flange is provided with a spacing breach, and said second clutch is provided with one and is engaged in the interior spacing protuberance of this spacing breach.

6. bicycle driving device as claimed in claim 1; It is characterized in that; The pedestal external diameter of said permanent seat is provided with external screw thread; After this pedestal is combined in the shell from a side of this shell, with one have internal screw thread enclosing cover from sealed this external screw thread of the other end of this shell, and then this permanent seat is combined in shell.

7. bicycle driving device as claimed in claim 1; It is characterized in that the relative both sides of said outer case inner diameter are provided with inner edge, between the inner edge of said second clutch one side and this shell one side; And between the inner edge of said enclosing cover one side and this shell opposite side, a plurality of balls are set respectively.