CN2860994Y

CN2860994Y - Crank fluted disc device of bicycle

Info

Publication number: CN2860994Y
Application number: CN 200520130791
Authority: CN
Inventors: 谢宜玲
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-12-26
Filing date: 2005-12-26
Publication date: 2007-01-24
Anticipated expiration: 2015-12-26

Abstract

A bicycle crank fluted disk device comprises a crank, a one-way driving device that is set at the lateral end of the crank, and a fluted disk that is joined with the one-way driving device. The crank sets an axial hole at the end of the one-way driving device; and the one-way driving device is connected with the crank in a one-way rotatable model to realize rotation and form more than one joining seats at the outer wall; and each fluted disk is respectively coaxial to the one-way driving device and fastened at the joining seat. This utility model has the technical means that is composed of the one-way driving chain so as to cause no trouble of demanding acceleration when changing gear and cause no danger for the user.

Description

The crank fluted disc device of bicycle

Technical field

The utility model relates to a kind of bicycle assembly parts, relate in particular to a kind of when chain rotates forward, fluted disc with rotation but the crank fluted disc device of the bicycle that crank section can not rotate.

Background technology

Existing bicycle is to step on pedal with pin, make the crank that is provided with pedal drive the crank shaft rotation forward that is incorporated between two cranks whereby, make the fluted disc drive chain that is fixedly arranged on the crank shaft rotate forward, drive trailing wheel with the fluted disc group of chain gear trailing wheel and rotate, drive bicycle and march forward.

In bicycle is advanced and the pedal of user's treadled cycle when reversing, because the trailing wheel flower-drum is the hub structure as No. 569962 " the flower-drum drive configuration improvement of bicycle " novel patent exposure that case is introduced of TaiWan, China notification number, chain reversing this moment also drives trailing wheel and is installed in the relative flower-drum idle running of fluted disc group on the sleeve, can not drive flower-drum and trailing wheel rotates backward; And in bicycle is advanced user when not stepping on pedal, though this moment trailing wheel rotates forward advance flower-drum can and the fluted disc group between generation dally, can not drive chain and rotate forward.

Though the drive mechanism of above-mentioned bicycle can guarantee bicycle and drive the trailing wheel backward rotation and cause danger because of stepping on pedal reversing at the Shi Buhui that advances, yet when driving bicycle, especially the descending special bicycle is under the downslope race condition of service, owing to utilize shift of transmission to need rotating link chain forward, therefore down-hill high-speed following, also must step on pedal forward quickens so that chain rotates gearshift forward, unnecessary accelerating ability causes user's danger, also is unfavorable for the speed that the allotment bicycle is advanced in contest.

The utility model content

Technical problem underlying to be solved in the utility model is, the user that also needs when gearshift who overcomes the device existence of existing bicycle transmission chain tramples acceleration and the gearshift action, make downslope race etc. advance at a high speed drive occasion the time cause dangerous and awkward shortcoming easily, and provide a kind of crank fluted disc device of bicycle, to be provided with the technological means of unidirectional drive chain configurations, not having gearshift needs the puzzlement quickened simultaneously, can not cause user's danger.

The technical scheme that its technical matters that solves the utility model adopts is:

A kind of crank fluted disc device of bicycle, it is characterized in that, comprise that a crank, is located at the unidirectional drive device on crank one distolateral side, and the fluted disc that is incorporated into the unidirectional drive device more than, wherein: this crank is equipped with an axis hole at an end that is provided with this unidirectional drive device; But this unidirectional drive device is can unidirectional rotation kenel being incorporated into crank and rotation, and it also forms more than one connecting support in periphery wall; Each fluted disc is concentric and be fixedly arranged on connecting support with this unidirectional drive device respectively.

The crank fluted disc device of aforesaid bicycle, wherein crank is provided with a toggle-action lever, and this toggle-action lever is the body of rod, and the inner of this toggle-action lever is vertically stretched and is provided with a column, and described axis hole is axially to be arranged in the column; Described unidirectional drive device is the unilateral bearing that comprises an interior ring and an outer shroud, and it is established with inner ring sleeve and is incorporated into this column, and is equipped with described connecting support in the periphery wall of outer shroud.

The crank fluted disc device of aforesaid bicycle, wherein the periphery wall at described unidirectional drive device uniformly-spaced is provided with four connecting supports, and each connecting support is radially prominent rectangular plate of establishing, and is equipped with a screw respectively; Be provided with two fluted discs that vary in size, each fluted disc is located at the both sides of connecting support respectively, and each fluted disc is stretched inwardly in corresponding four connecting supports of inner edge and is provided with four armites, corresponding each screw of each armite is equipped with a perforation respectively, be provided with four bolts and pass each perforation and each screw and screw lock respectively, whereby each fluted disc is incorporated on the connecting support in nut.

The crank fluted disc device of aforesaid bicycle, wherein the periphery wall of unidirectional drive device uniformly-spaced is provided with four connecting supports, and each connecting support is radially prominent rectangular plate of establishing, and is equipped with a perforation respectively; Be provided with two fluted discs that vary in size, each fluted disc is the both sides that are divided into connecting support, and each fluted disc is stretched inwardly at corresponding four connecting supports of inner edge and is provided with four armites, be respectively equipped with a perforation on each armite, with with connecting support on perforation be involutory, other is provided with four rivets that pass the perforation on connecting support and the armite respectively, whereby each fluted disc is incorporated on the connecting support.

The utility model is to be installed on the bicycle of trailing wheel direct drive rear tooth disk when using, and being axis hole with crank, the utility model is incorporated into the crank shaft that this bicycle five-pipe place is pivoted, and the outer end is in conjunction with a pedal, and chain is sheathed between the fluted disc group of fluted disc of the present utility model and trailing wheel.

When driving, the user is equiped with bicycle of the present utility model and when stepping on pedal forward, crank can drive fluted disc set on the unidirectional drive device and rotate forward, by the chain drive trailing wheel bicycle is advanced.If the user steps on pedal rotation backward, owing to be provided with the unidirectional drive device, so crank can dally backward and can not drive chain and rotate, and trailing wheel is reversed.

And continue to march forward and trailing wheel when rotating forward when bicycle, the trailing wheel of rotation can drive the fluted disc group and chain rotates forward constantly, this moment is because the effect of unidirectional drive device, the chain of Zhuan Donging can not drive the crank rotation forward, but dally simultaneously with fluted disc, pedal is rotated cause the puzzlement that drives, and, therefore can not need step on pedal and directly shift gears with change-speed box because chain rotates forward this moment.

Because being equiped with the utility model can make bicycle not have gearshift in the use occasion as downslope race to need the puzzlement quickened simultaneously, can not cause user's danger, be beneficial to the speed that the allotment bicycle is advanced in contest, and do not have the problem that chain drives the crank rotation and causes use to perplex when advancing, have multi-functional advantage.

And the utility model be with connecting support in conjunction with each fluted disc, therefore more can be, and then reach more multi-section gearshift and select effect in groups in conjunction with more fluted disc.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the exploded perspective scheme drawing of the utility model preferred embodiment.

Fig. 2 is the combination schematic perspective view of the utility model preferred embodiment.

Fig. 3 is the front view that crank and cover plate are removed in the utility model preferred embodiment.

Fig. 4 is that the utility model preferred embodiment is installed in the enforcement scheme drawing on the bicycle.

The number in the figure explanation:

10 cranks, 11 toggle-action levers

111 pedal combined holes, 12 columns

121 spiro tooth parts, 122 axis holes

Ring in the 20 unidirectional drive devices 21

211 threaded portions, 212 backstop ring plates

213 spiro tooth parts, 214 caulking grooves

215 grooves, 216 concave-arc parts

22 cover plates, 221 threaded portions

23 clamping blocks, 231 pivot protuberances

232 profile grooves, 24 bundle circles

25 outer shrouds, 251 ratchet parts

252 connecting supports, 253 lockholes

30 fluted discs, 301 armites

302 perforation, 31 fluted discs

312 perforation of 311 armites

40 bolts, 41 nuts

50 bicycles, 51 pedals

52 chains, 53 trailing wheels

54 trailing wheel fluted disc groups

The specific embodiment

The utility model is a kind of crank fluted disc device of bicycle, see also Fig. 1 to preferred embodiment shown in Figure 3, it comprises that a crank 10, is located at unidirectional drive device 20 and two fluted discs that are incorporated into unidirectional drive device 20 30,31 of crank 10 1 ends, wherein:

This crank 10 is provided with a toggle-action lever 11, this toggle-action lever 11 is bodies of rod, it is equipped with a pedal combined hole 111 in the outer end, and vertically stretch in a side of the inner and to be provided with a columned column 12, the peripheral ring of column 12 is provided with a spiro tooth part 121, and in inner shaft to being equipped with a square axis hole 122.

This unidirectional drive device 20 is a kind of unilateral bearing, and comprises ring 21, one cover plate 22, two clamping blocks 23, a C pencil of forms circle 24 and an outer shroud 25 in one,

Should interior ring 21 be torus wherein, the inner circumferential surface ring establish a threaded portion 211 and screw lock in the spiro tooth part 121 of column 12, the sheathed whereby column 12 that is incorporated into, the two ends fate of interior ring 21 outer peripheral faces forms a backstop ring plate 212 and a spiro tooth part 213, and centre portion is provided with a ring caulking groove 214, the both sides of ring caulking groove 214 symmetries respectively are provided with a groove 215, and bottom land one side of each groove 215 is concaved with a concave-arc part 216; Cover plate 22 is annulus lamellar bodies, in inner peripheral surface be equipped with a threaded portion 221 and screw lock in the spiro tooth part 213 of interior ring 21;

Two clamping blocks 23 are oblong blocks of ccontaining two grooves 215 respectively, its each encircle 21 inwardly at the corresponding concave-arc part 216 of an end of inner face and convex with the pivot protuberance 231 of a circular arc, and in the mediad of the other end, be provided with one section profile groove 232 by end face;

C pencil of forms circle 24 has elasticity and expansible bringing together, and the end that the profile groove 232 that it is sheathed on caulking groove 214 and passes each clamping block 23, each clamping block 23 are provided with pivot protuberance 231 inwardly compresses towards concave-arc part 216 and makes other end perk; Outer shroud 25 is torus and the ratchet part 251 that convexes with a circle cooperation two clamping blocks 23 perks one end in the centre portion of inner peripheral surface, and the both sides of ratchet part 251 are corresponding backstop ring plate 212 and peripheries of cover plate 22 and locating against interior ring 21, whereby, ring 21 can unidirectionally rotate outward in outer shroud 25 was sheathed on, outer shroud 25 also uniformly-spaced is equipped with four connecting supports 252 in periphery wall, each connecting support 252 is vertical to overhanging rectangular plate of establishing, and axially is equipped with a screw 253 respectively.

Two fluted discs 30, the 31st, the fluted disc body that varies in size, and each is concentric and be arranged at the both sides of connecting support 252 respectively with this unidirectional drive device 20, each

fluted disc

30,31 stretch inwardly in corresponding four connecting supports 252 of inner edge and to be provided with four shaft-like armites 301,311, each armite 301,311 corresponding each screw 253 are equipped with a perforation 302 at free end respectively, 312, be provided with four bolts 40 and four nuts 41, each bolt 40 passes two fluted discs 30 respectively, 31 cooresponding perforation 302,312 and the screw 253 of corresponding connecting support 252 and screw lock in nut 41, whereby with two

fluted discs

30,31 are incorporated on the connecting support 252; In addition, the utility model also can be provided with coaxial perforation (not shown) relatively between each connecting support 252 and each armite 301,311, and is placed through the rivet clasp of respectively boring a hole jointly with rivet

The utility model is except that uniformly-spaced stretching the setting that is provided with four connecting supports 252 at outer shroud 25 as preferred embodiment, also outer shroud 25 can be designed to stretch the setting that is provided with a girth sheets sheet connecting support at periphery wall, and on this connecting support, uniformly-spaced be equipped with four screws, and in order in conjunction with each

fluted disc

30,31, perhaps also can be provided with the connecting support of other quantity and the armite 301,311 that cooperates

fluted disc

30,31 inner edges to stretch to establish and combination at outer shroud 25, the utility model is not limited at this.

When the utility model uses, see also Fig. 2 to Fig. 4, be to be installed on the bicycle 50 with change-speed box, the trailing wheel 53 of this bicycle 50 is the setting that mutually combines with the fluted disc group 54 of trailing wheel, drive 54 rotations of fluted disc group synchronously with trailing wheel 53, and being axis hole 122 with crank 10, the utility model is incorporated into the crank shaft that these bicycle 50 five-way pipe places are pivoted, and the outer end, and is sheathed on chain 52 between the fluted disc group 54 of fluted disc 30 of the present utility model and trailing wheel in conjunction with a pedal 51 with pedal combined hole 111.

When driving, the user is equiped with bicycle 50 of the present utility model and when stepping on pedal 51 forward, set fluted disc 30 rotates forward on the crank 10 meeting drive unidirectional drive devices 20, and then drive chain 52 driving fluted disc groups 54 and make trailing wheel 53 rotation forward, make bicycle 50 produce the power that advances whereby.If the user steps on pedal 51 rotation backward, owing to be provided with unidirectional drive device 20 between crank 10 and the fluted disc 30, so crank 10 can dally backward and can not drive chain 52 and rotate backward, and trailing wheel 53 is reversed, and can not cause danger.

And continue to march forward and trailing wheel 53 when rotating forward when bicycle 50, be fixedly arranged on the trailing wheel 53 in fluted disc group 54, therefore the trailing wheel 53 of rotation drives fluted disc group 54 and chain 52 rotation forward constantly, and this moment is because 20 effects of unidirectional drive device, the chain 52 of Zhuan Donging can not drive crank 10 rotations forward, but together internally encircle 21 idle running mutually with fluted disc 30 and outer shroud 25, pedal 51 is rotated cause the puzzlement that drives.

And because trailing wheel 53 continues can make when rotating forward chain 52 also to rotate forward simultaneously, this moment can change-speed box directly gearshift and need not step on pedal 51 and make crank 10 rotary fluted disc 30 forward, therefore can directly shift gears, do not exist gearshift to need the puzzlement of quickening simultaneously in use occasion as downslope race, can not cause user's danger, be beneficial to the speed that the allotment bicycle is advanced in contest yet.

Aforementioned preferred embodiment is to be designed to screw togather between the inner peripheral surface of the interior ring of unidirectional drive device and the column, it can also directly be formed at (not shown) on the column with interior ring, that is directly be provided with clamping block and members such as bundle circle etc. at the column outer peripheral face, when it is sheathed be assembled in outer shroud after, again in the free end of column in conjunction with a barrier module (for example nut or clasp), deviate to prevent outer shroud.

Claims

1. the crank fluted disc device of a bicycle is characterized in that, comprises that a crank, is located at the unidirectional drive device on crank one distolateral side, and the fluted disc that is incorporated into the unidirectional drive device more than, wherein:

This crank is equipped with an axis hole at an end that is provided with this unidirectional drive device;

But this unidirectional drive device is can unidirectional rotation kenel being incorporated into crank and rotation, and it also forms more than one connecting support in periphery wall;

Each fluted disc is concentric and be fixedly arranged on connecting support with this unidirectional drive device respectively.

2. the crank fluted disc device of bicycle according to claim 1 is characterized in that described crank is provided with a toggle-action lever, and this toggle-action lever is the body of rod, and the inner of this toggle-action lever is vertically stretched and is provided with a column, and described axis hole is axially to be arranged in the column;

Described unidirectional drive device is the unilateral bearing that comprises an interior ring and an outer shroud, and it is established with inner ring sleeve and is incorporated into this column, and is equipped with described connecting support in the periphery wall of outer shroud.

3. the crank fluted disc device of bicycle according to claim 1 and 2 is characterized in that uniformly-spaced being provided with four connecting supports at the periphery wall of described unidirectional drive device, and each connecting support is radially prominent rectangular plate of establishing, and is equipped with a screw respectively;

Be provided with two fluted discs that vary in size, each fluted disc is located at the both sides of connecting support respectively, and each fluted disc is stretched inwardly in corresponding four connecting supports of inner edge and is provided with four armites, corresponding each screw of each armite is equipped with a perforation respectively, be provided with four bolts and pass each perforation and each screw and screw lock respectively, whereby each fluted disc is incorporated on the connecting support in nut.

4. the crank fluted disc device of bicycle according to claim 1 and 2 is characterized in that the periphery wall of described unidirectional drive device uniformly-spaced is provided with four connecting supports, and each connecting support is radially prominent rectangular plate of establishing, and is equipped with a perforation respectively;

Be provided with two fluted discs that vary in size, each fluted disc is the both sides that are divided into connecting support, and each fluted disc is stretched inwardly at corresponding four connecting supports of inner edge and is provided with four armites, be respectively equipped with a perforation on each armite, with with connecting support on perforation be involutory, other is provided with four rivets that pass the perforation on connecting support and the armite respectively, whereby each fluted disc is incorporated on the connecting support.