CN2228052Y - Lift wheel - Google Patents

Abstract

The utility model discloses a lift wheel used for bicycles, comprising a chain box, a strip box cover, a mainspring, a ball, and a star wheel strip axis. The mainspring is arranged in the chain box. A V-shaped strip hook passes through by the external end head of the mainspring to hook the convex boss of the inner wall of the external part of the chain box body. The inner end of the mainspring is fixed on the star wheel strip axis by a plum blossom bolt.

Description

Lift wheel

The utility model is the bicycle accessories device, is to utilize length of spring compressed and discharge the Lift wheel that increases the flywheel rotation around being directly installed on bicycle freewheel.

Utilize length of spring compressed and release and to save the device of manpower existing a lot, be contained on the bicycle also there to be much the labour-saving device, but the structure difference, effect is also different.

The purpose of this utility model provides a kind of bicycle freewheel that is contained in and utilizes the spring energy-storage release force to save the Lift wheel of manpower on every side.

The purpose of this utility model is achieved in that accompanying drawings is as follows:

A kind of Lift wheel comprises chain box, lid, clockwork spring, ball, bearing door, ratchet bar axle composition, and its constructional feature is:

1. clockwork spring (3) spirals and is contained in the chain box (1), and the end that its outer end and bar collude (12) is fixed together with rivet, and the other end that bar colludes (12) colludes on chain box (1) outer end inner wall boss (10); Circular hole on the inner of clockwork spring (3) is fixed on the ratchet bar axle (6) with bolt (13), in ball (14) bearing chamber on chain box (1) outer face and bar lid (2) outer face in bulk, is screwed by bearing door (5) and to block;

2. bearing door (8) is fixed on chain box (1) in the flywheel of bicycle and puts, and sprocket gear (9) is in the outermost end of chain box (1).

The utility model advantage is a lot, normally by bike in, firmly to pedal just can partly to pedal power tighten clockwork spring, be wrapped on the ratchet bar axle, preserve into elastic force, it is consistent with the wheel rotation direction again that the arrow of these bullets is put direction, and clockwork spring vows that exoergic promotes the bicycle running and advances;

Accompanying drawing 1 is the Lift wheel structural representation;

Accompanying drawing 2 is a Lift wheel side-looking cross-sectional view;

Description of drawings and embodiment:

1 is chain box, and 2 is the bar lid, and 3 is clockwork spring, and 4,7,14 is ball, and 5,8 is the bearing door, and 6 is door, and 9 is gear, and 10 is boss, and 11 is rivet, and 12 for bar colludes, and 13 is the plum blossom bolt, and 15,16 is handling hole, and 17,18 is rotation arrow.

As attached Fig. 1 and 2, chain box among the figure (1) is the Lift wheel main body, be provided with clockwork spring (3) between chain box (1) and the bar lid (2), the outermost termination of clockwork spring (3) and hook strips (12) one ends are formed the vee shape bar by rivet (11) riveting together and are colluded (12), and the other end that bar colludes (12) tightly is hooked in the boss (10) of the outer circle inwall of chain box (1) and locates; The inner of clockwork spring (3) is provided with round taper hole and is fastened on the ratchet bar axle (6) with bolt (13), and ball (4) and (14) are covered in the bearing chamber between chain box (1) end face and bar lid (2) by bearing cap shim (5).Bearing door (8) is tightened Lift wheel wheel body chain box (1) and puts in bicycle freewheel, and chain box (1) can be promoted; Sprocket gear (9) is done the propelling of chain to pedal and is used in the outermost end of chain box (1).

Handling hole in the accompanying drawing (16), (15) and (19) are dismounting bar lid (12) and bearing baffle (5) and (8) usefulness.

As people by bike the time, bicycle is pedaled son, and chain chain link gear (9) rotates, the wheel body rotation, and car is to moving ahead, simultaneously unnecessary power ecto-entad compression clockwork spring (3), after clockwork spring compressed, during the pedal power difference, clockwork spring discharged and promotes wheel, and car is advanced.

Claims (2)

1, a kind of Lift wheel comprises chain box, lid, clockwork spring, ball, bearing, door, ratchet bar axle composition, it is characterized in that:

1. clockwork spring (3) spirals and is contained in the chain box (1), and the end that its outer end and bar collude (12) is fixed together with rivet, and the other end that bar colludes (12) colludes on chain box (1) outer end inner wall boss (10); The inner of clockwork spring (3) is fixed on the ratchet bar axle (6) with bolt (13), in ball (14) bearing chamber on chain box (1) wall outer face and bar lid (2) outer face in bulk, is screwed by bearing door (5) and to block;

2. bearing door (8) is fixed on chain box (1) in the flywheel of bicycle and puts, and sprocket gear (9) is in the outermost end of chain box (1).

2, Lift wheel according to claim 1 is characterized in that: handling hole (16), (15), (19) are folding dress lid (2), door (5) and (8) usefulness.

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