CN2506529Y

CN2506529Y - Speed changing mechanism for men power driven vehicle

Info

Publication number: CN2506529Y
Application number: CN 01234041
Authority: CN
Inventors: 邵林嵩; 俞永仁
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-08-16
Filing date: 2001-08-16
Publication date: 2002-08-21
Anticipated expiration: 2011-08-16

Abstract

The utility model relates to a dual-wing dual-chain type speed changing mechanism of a men power driven vehicle, which comprises a middle axle consists of two half axles. An outer end of an axle sleeve of the two half axles are fixed with two chain wheels of bigger and smaller. A differential gear is connected between two half axle sleeves. Two ends of the middle axle are provided with a fork lever groove and a pin. Two chain wheels of bigger and smaller are respectively corresponding to two fly wheels of bigger and smaller, and connected by chains. The utility model has simple and reasonable structure, flexible and convenient using.

Description

The rickshaw speed-changing mechanism

Technical field

The utility model belongs to vehicle class, specifically is a kind of speed-changing mechanism of rickshaw.

Prior art

Existing rickshaw does not generally all have speed-changing mechanism, it is convenient and practical inadequately when uphill/downhill, loads or other need speed change to travel, though and occurred many many grades of adjustable speed variable speed bicycles in the market, but this variable speed bicycle is owing to mainly realize speed change by multi-stage gear, complex structure, damage easily, use also underaction, and more unreliable in back wet by the rain and burnt by the sun quality.

Summary of the invention

The purpose of this utility model is at the deficiencies in the prior art, and the movably double-chain rickshaw speed-changing mechanism of round trip flight of a kind of axis or sprocket wheel is provided.

The utility model is realized by following technical proposal:

Speed-changing mechanism of the present utility model comprises middle shaft housing, axis, sprocket wheel, chain, flywheel, shift fork, it is characterized in that: axis is made of two semiaxis, fixing two small one and large one sprocket wheels in the axle sleeve outer end of two semiaxis, connect a diff between two half-axile sleeves, fork slot and pin are arranged at the two ends of axis.

Two small one and large one sprocket wheels of the present utility model are distinguished corresponding one little one big flywheel, and sprocket wheel is connected by chain respectively with flywheel.

Diff of the present utility model comprises bearing, holding screw and a cover plate, and the outer rim of bearing and a half-axile sleeve are fastening, and inner edge and second half axle sleeve are fastening.

Diff of the present utility model also can be taked other simple form.

The utility model has fork slot and pin at the axis two ends, but makes axis or the gear shift of sprocket wheel sway owing to adopted double-stranded round trip flight, realizes that finally the speed change of simple and convenient is travelled, and the utility model is simple and reasonable, and flexible and convenient operation is reliable, and is not fragile.

The drawing explanation

Fig. 1 is that the utility model is along the central axis direction sectional structure chart.

Wherein (1) is axis, and (2) are hinge wheel, (3) and (3) ' and be two semiaxis axle sleeves, (4) be shift fork, (5) are diff, and (6) are bearing, (7) be cover plate, (8) be minor sprocket, (9) are the fork slot on the axis, and (10) are pin, (11) be middle shaft housing, (12) be holding screw, (13) are vehicle frame, and (14) are pin grooves.

Fig. 2 is the double-stranded round trip flight link of a utility model form scheme drawing.

Wherein (16) are big flywheel, and (15) are small flywheel, (17), (17) ' and be chain.

The specific embodiment

As shown in Figure 1, the utility model comprises middle shaft housing (11), sprocket wheel, flywheel, chain, shift fork (4), middle shaft housing (11) is welded on the vehicle frame (13), it is characterized in that axis (1) is made of two semiaxis, the axle sleeve (3) of two semiaxis and (3) ' on fixing small one and large one two sprocket wheels (2) (8), two half-axile sleeves (3) (3) ' connection one diff (5), fork slot (9) and pin (10) are arranged at the two ends of axis, shift fork (4) under external force, pass to axis by fork slot (9), but make the axis sway, closely cooperate after entering pin grooves (14) by pin.

As shown in Figure 2, two small one and large one sprocket wheel (2), (8) corresponding one little one big flywheels (15) (16) respectively of the present utility model, and respectively by chain (17), (17) ' connect.

As shown in Figure 1, diff of the present utility model comprises a bearing (6), a holding screw (12) and a cover plate (7), and the outer rim of bearing (6) and a half-axile sleeve (3) are fastening, inner edge and second half axle sleeve (3) ' and fastening.

Diff of the present utility model also can adopt simple form.

Claims

1, a kind of rickshaw speed-changing mechanism, comprise middle shaft housing (11), axis (1), sprocket wheel, flywheel, chain, shift fork (4), it is characterized in that axis (1) is made of two semiaxis, two sprocket wheels (2) (8) of fixing small one and large one in the axle sleeve (3) and (the 3) ' outer end of two semiaxis, two half-axile sleeves (3) (3) ' connection one diff (5) have fork slot (9) and pin (10) at the two ends of axis.

2, according to the described manpower speed-changing mechanism of claim 1, it is characterized in that: two small one and large one sprocket wheel (2), (8) corresponding one little one big flywheels (15) (16) respectively, and respectively by chain (17), (17) ' connect.

3, according to the described rickshaw speed-changing mechanism of claim 1, it is characterized in that: diff (5) comprises a bearing (6), holding screw (12), cover plate (7), and the outer rim of bearing (6) and a half-axile sleeve (3) are fastening, inner edge and second half axle sleeve (3) ' and fastening.