CN2410230Y - Pedal rotary shaft clutch for bicycle - Google Patents

Abstract

The utility model relates to a pedal rotary shaft clutch for bicycles; one end of a rotary shaft pivoted in a five-way pipe of a frame is provided with a tooth disc and a pedal; an oblique tooth slot is arranged at the inner surface at the center of the tooth disc; a drive body is arranged at a sleeve tube at an outer end of the five-way pipe; oblique teeth matched with the oblique tooth slot are in a ring arrangement on the end surface; the outer surface is sheathed with a reed; the outer surface of the reed is slightly contacted with the inner surface of the sleeve pipe. When the rotary shaft rotates clockwise, and the driving body rotates to the direction of the tooth disc to drive the tooth disc to rotate clockwise; when the tooth disc or the rotary shaft independently rotates counter clockwise, the drive body rotates to the direction of the five-way pipe; the tooth disc is separated from the rotary shaft, which prevents the pedal from rotating counter clockwise.

Description

Bicycle pedal rotating shaft arrangement of clutch

The utility model relates to a kind of bicycle pedal rotating shaft arrangement of clutch, refer in particular to a kind of can be when bicycle retreats, the bicycle pedal rotating shaft arrangement of clutch that rotating shaft and fluted disc are dragged away from mutually.

As shown in Figure 1, the driving structure of general bicycle is to wear pivot one rotating shaft 11 at the five-way pipe 1 of vehicle frame, at least set firmly a large fluted disc 12 in the rotating shaft 11, the then sheathed pedal 13 in rotating shaft 11 two ends, large fluted disc drives the miniature gears 16 of trailing wheel 15 by chain 14, when pushes pedals 13, promptly drive the trailing wheel rotation and advance.Wherein, be provided with the elastic webbing actuation mechanism between the miniature gears 16 of trailing wheel 15 and wheel hub, thereby before the bicycle and then pedal 13 when pausing, trailing wheel 15 can be rotated further and make wheel hub and miniature gears 16 temporarily to break away from.But when bicycle retreated, trailing wheel 15 drove miniature gears 16 and reverses, and reversed thereby drive pedal 13.This phenomenon perhaps there is no big harm for general user, but concerning the bicycle performing artist, very big inconvenience when the pedal 13 that reverses not only can cause performance, and knock easily or scratch performing artist's foot, even trip the performing artist, therefore have very big danger.

The purpose of this utility model is to provide a kind of bicycle pedal rotating shaft arrangement of clutch, drives fluted disc when rotating shaft is just being changeed, and when rotating shaft reverse or large fluted disc reversed, then rotating shaft and fluted disc broke away from mutually, causes cyclist's feet from injuring so as to avoiding because of pedal reverses.

The purpose of this utility model realizes by following technological means: a kind of bicycle pedal rotating shaft arrangement of clutch, form by First Five-Year Plan siphunculus, a transmission body, a reed, a fluted disc and a rotating shaft, and an end of the rotating shaft of rotating shaft in the frame five-through pipe protrudes out five-way pipe outer end, fluted disc and pedal are installed on it, it is characterized in that: fluted disc central authorities are provided with the bearing that can be socketed in the rotating shaft, and fluted disc central authorities inner face is provided with the helical teeth groove; Five-way pipe outer end sets firmly a sleeve pipe, and rotor is located in the sleeve pipe, and its end face ring is provided with the helical teeth of engageable helical teeth groove, and transmission body central authorities are provided with the negative thread that can establish with the default outside thread spiral shell of rotating shaft ad-hoc location; Reed is set in the transmission body cylindrical to be represented, the internal circular surfaces of the rough contact sleeve pipe of reed appearance; Sleeve pipe central authorities are provided with the bearing that can be socketed in the rotating shaft; Transmission body is a kind of helical wheel; Rotating shaft is provided with rank shelves that are positioned at the fluted disc outer end; Reed is the C font, and an end is and the cooresponding interior oblique spigot of the slot on transmission body surface, the arc angle of the other end for contracting in cooresponding with the groove on transmission body surface.

Advantage of the present utility model is effectively to prevent that pedal from reversing, thereby avoids reversing the injury that brings to cyclist foot because of pedal.

Describe structure of the present utility model in detail below in conjunction with accompanying drawing.

Fig. 1 is the side-looking constructional drawing of bicycle;

Fig. 2 is a decomposing schematic representation of the present utility model;

Fig. 3 is an assembled sectional view of the present utility model;

Fig. 4 is a combination front elevation of the present utility model;

Scheme drawing when Fig. 5 is just changeing for rotating shaft of the present utility model.

Among the figure: 11 rotating shafts, 12 large fluted discs, 13 pedals, 14 chains, 15 trailing wheels, 16 miniature gearss, 2 five-way pipes, 21 sleeve pipes, 22 bearings, 3 rotors, 31 helical teeth, 32 negative threads, 33 grooves, 34 slots, 4 reeds, 41 spigots, 42 arc angles, 5 fluted discs, 51 vicarious, 52 helical teeth grooves, 6 rotating shafts, 61 outside threads, 62 rank retaining.

As shown in Figures 2 and 3, the utility model is made up of five-way pipe 2, transmission body 3, reed 4, fluted disc 5 and rotating shaft 6, and 6 pivots of rotating shaft are in the five-way pipe 2 of bicycle frame, the one end protrudes out five-way pipe 2 outer ends, can wind to drive the small tooth plate of trailing wheel for chain ring for installing fluted disc 5 and pedal (not shown) fluted disc 5.Wherein, five-way pipe 2 outer ends set firmly a sleeve pipe 21, are provided with transmission body 3 in the sleeve pipe 21, and central sheathed bearing 22 is socketed in the rotating shaft 6 with bearing 22 again; Transmission body 3 can be in fact a helical wheel, and its end face ring is provided with the helical teeth 31 that can nibble the helical teeth groove, and central authorities are provided with the negative thread 32 that can be arranged in the rotating shaft 6, represents to be provided with a slot 34 and a groove 33 at its cylindrical in addition; Reed 4 is the C font, and an end is interior oblique spigot 41, the arc angle 42 that the other end contracts in being, and spigot 41 can be plugged in the slot 32 of transmission body 3, and arc angle 42 can be fastened in the groove 33 of transmission body 3; The bearing 51 that fluted disc 5 borrows its central authorities to set firmly is socketed in the rotating shaft 6, and its central inner face is provided with helical teeth groove 52, and this helical teeth groove 52 can be meshed with the helical teeth 31 of transmission body 3 and driven by it; Rotating shaft 6 surfaces are provided with one section outside thread 61 at least between sleeve pipe 21 inside and fluted disc 5, be located at herein for transmission body 3 spiral shells, and rotating shaft 6 expressions also are provided with rank shelves 62, and are positioned at the outer end of fluted disc 5.

The internal circular surfaces (as shown in Figure 4) of the rough contact sleeve pipe 21 of the appearance of above-mentioned reed 4, can provide suitable resistance to resist transmission body 3 and be arranged in the maximum quiet power of rubbing in the rotating shaft 6, thereby when rotating shaft 6 forward or reverse, can make transmission body 3 not rotation thereupon earlier, but utilize spiral in rotating shaft 6, to move earlier.Whereby, when rotating shaft 6 is just being changeed (as shown in Figure 5), the higher friction force that utilizes reed 4 to be provided can make transmission body 3 move to fluted disc 5 directions, and then borrow helical teeth 31 contacts to nibble helical teeth groove 52 and just changeing to drive fluted disc 5, thereby the drive trailing wheel just then bicycle is advanced.Otherwise when rotating shaft 6 reverses, transmission body 3 will move to five-way pipe 2 directions, and then transmission body 3 breaks away from (as shown in Figure 3) mutually with fluted disc 5 immediately, and fluted disc 5 and rotating shaft 6 are broken away from mutually, thereby can not drive fluted disc 5 counter-rotatings.Equally, when fluted disc 5 reverses separately (when falling back as bicycle), fluted disc 5 will drive transmission body 3 independent counter-rotatings and move to five-way pipe 2 directions, and then transmission body 3 also breaks away from fluted disc 5 immediately mutually, fluted disc 5 and rotating shaft 6 are broken away from mutually, thereby can not drive rotating shaft 6 counter-rotatings.Like this, when bicycle falls back, will can not make the pedal counter-rotating, and can avoid causing the situation of knight's feet from injuring to take place.

In the above-mentioned structure, reed 4 two ends are made spigot 41 and arc angle 42 respectively, mainly be for different skin friction forces is provided, little as arc angle 42 with respect to the skin friction force of spigot 42, when fluted disc 5 reverses separately, break away from fluted disc 5 in case drive transmission body 3, then transmission body 3 stops to move at once, like this, can make when rotating shaft 6 is just being changeed once more and to drive fluted disc 5 rapidly and just changeing.

Claims (5)

1, a kind of bicycle pedal rotating shaft arrangement of clutch, form by First Five-Year Plan siphunculus, a transmission body, a reed, a fluted disc and a rotating shaft, and an end of the rotating shaft of rotating shaft in the frame five-through pipe protrudes out five-way pipe outer end, fluted disc and pedal are installed on it, it is characterized in that: fluted disc central authorities are provided with the bearing that can be socketed in the rotating shaft, and fluted disc central authorities inner face is provided with the helical teeth groove; Five-way pipe outer end sets firmly a sleeve pipe, and rotor is located in the sleeve pipe, and its end face ring is provided with the helical teeth of engageable helical teeth groove, and transmission body central authorities are provided with the negative thread that can establish with the default outside thread spiral shell of rotating shaft ad-hoc location; Reed is set in the transmission body cylindrical to be represented, the internal circular surfaces of the rough contact sleeve pipe of reed appearance.

2, a kind of bicycle pedal rotating shaft arrangement of clutch according to claim 1, it is characterized in that: sleeve pipe central authorities are provided with the bearing that can be socketed in the rotating shaft.

3, a kind of bicycle pedal rotating shaft arrangement of clutch according to claim 1, it is characterized in that: transmission body is a kind of helical wheel.

4, a kind of bicycle pedal rotating shaft arrangement of clutch according to claim 1 is characterized in that: rotating shaft is provided with rank shelves that are positioned at the fluted disc outer end.

5, a kind of bicycle pedal rotating shaft arrangement of clutch according to claim 1, it is characterized in that: reed is the C font, an end is and the cooresponding interior oblique spigot of the slot on transmission body surface, the arc angle of the other end for contracting in cooresponding with the groove on transmission body surface.

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