CN1351942A - Speed changer for non-motor vehicle - Google Patents

Abstract

A speed changer for non-motor vehicle includes one middle shaft with three pawls, one clutch sleeve jacketed on the middle shaft and with three pawl outlets, one damping chute at left of the clutch sleeve and with damping magnet, two bearing supported inner ratchet wheels on the clutch sleeve, one output inner ratchet at the right of the clutch sleeve and with front end fixed to a chain wheel, and three output rolling gears among the inner ratchet wheels and one inner annulus. The speed changer is installed in bicycle and has the features of flexible shifting and being firm and durable.

Description

Speed changer for non-motor vehicle

The invention belongs to the axis internal speed changer that a kind of variable speed bicycle is used.

Bicycle because easy to use, cheap, outward appearance is beautiful, particularly be of value to healthy by bike, and favored by consumers in general.Almost all there is bicycle in each family in China urban and rural residents, and the usage quantity of China's bicycle occupies first in the whole world, and in quite long one period, bicycle is still broad masses' the main vehicle in China.Increase along with automobile quantity, the vehicle exhaust pollution on the environment is more and more serious, become the pollution problem of a danger utmost point human health, this is except applying the improvement of no lead oil and automotive engine, increase the bicycle use amount, reducing traffic is an effective way with the automotive use amount, has caused global concern.Yet commercially available bicycle is cheap though style is a lot of at present, does not have breakthrough improvement, can be divided into ordinary bicycle and variable speed bicycle substantially.And the variable speed bicycle aesthetic appearance is poor, the backguy gearshift is not accurate enough, loaded down with trivial details insensitive, the random retaining of unstable properties love of speed operation, and variable-speed motor is exposed fragile outside.

Purpose of the present invention, providing a kind of mainly is to be installed on the bicycle middle shaft, is the bicycle middle shaft internal speed changer, makes bicycle beautiful outline form, speed change accurate and sturdy and durable flexibly.

Above-mentioned purpose of the present invention realizes by following technical proposals, that is:

Speed changer for non-motor vehicle comprises change speed gear box, main shaft, speed change ratchet assembly, output gear component and gear ring.Change speed gear box is made up of casing and left end cap, and left end cap has axis hole by being bolted to the casing left end on the right side of left end cap and casing.

At the main shaft middle part a plurality of ratchets chamber is arranged, at the indoor flat fire ratchet that is equiped with by straight spring supporting of each ratchet.Ratchet assembly comprises a plurality of inner ratch gears, output inner ratch gear, stop gear and clutch cover.A plurality of bar flute profile ratchet outlets that different angles offer that are are arranged on the clutch cover, the damping block chute is arranged, in resistance clod chute, be equiped with magnet resistance clod at the left end of clutch cover.Clutch cover is contained on the main shaft, the indoor flat fire ratchet of a plurality of ratchets on the main shaft, when main shaft reverses, can be respectively ratchet outlet from the clutch cover stretch out or indentation ratchet chamber.Stop gear is contained in the left end of clutch cover, and contacts with a detent, and stop gear can only be clockwise rotated.A plurality of inner ratch gears are contained on the clutch cover, when the bar flute profile ratchet outlet of a plurality of flat fire ratchets from clutch cover stretched out, can replace respectively on the interior ratchet of a corresponding inner ratch gear with it, the output inner ratch gear is installed in the clutch cover right-hand member, and is supported by the bearing in the bearing seat that is installed in box back portion.The interior ratchet of output inner ratch gear can be replaced by a fast flat fire ratchet.The right-hand member of output inner ratch gear stretches out from the axis hole on the casing right side, and captives joint with sprocket wheel by locating dowel pin.Output gear component is made up of the different rolling bearing of a plurality of diameters, and is an integral structure.A plurality of rolling bearings are installed between a plurality of inner ratch gears, the interior ratchet of output and the internally toothed annulus, and corresponding engagement.Internally toothed annulus is connected with casing ball key.Oil hole is arranged on change speed gear box, and oil hole is sealed by an embolism bolt when not oiling.

The present invention is installed on the bicycle, can realize the axis speed change of bicycle, and main shaft promptly is the axis of bicycle.

Axis inner speed change bicycle of the present invention has good looking appearance, does not have any pull bar, backguy and other speed change parts to expose, and is therefore sturdy and durable, particularly by the pin realization of falling tap pedal speed change, convenient, flexible, is a breakthrough improvement in variable speed bicycle field.

Fig. 1 is a kind of embodiment scheme drawing of the present invention, and Fig. 2 is A-A view of Fig. 1, and Fig. 3 is B-B view of Fig. 1, Fig. 4 is the clutch cover structural representation, Fig. 5 is the lateral plan of Fig. 4, and Fig. 6 is the axis structural representation, and Fig. 7 is A-A view of Fig. 6, Fig. 8 is the structural representation of rolling bearing, Fig. 9 is the lateral plan of Fig. 8, and Figure 10 is an output inner ratch gear structural representation, and Figure 11 is the lateral plan of Figure 10, Figure 12 is 2,3 retaining inner ratch gear structural representations, and Figure 13 is the lateral plan of Figure 12.The invention will be further described below in conjunction with the embodiment accompanying drawing.

Embodiment

Speed changer for non-motor vehicle for being installed in the axis internal speed changer on the bicycle, comprises change speed gear box, axis 1, internally toothed annulus 2, speed change ratchet assembly and output gear component.Change speed gear box is made up of casing 3 and left end cap 4.On the right side of left end cap 4 and casing 3, axis hole 6 and 7 are arranged.3 ratchet chambers 8 are arranged at the middle part of axis 1.Be equiped with a flat fire ratchet 9 in each ratchet chamber 8, there is a universal-joint 10 lower end of flat fire ratchet 9, wherein, is positioned at the flat fire ratchet 9 of ratchet chamber, both sides 8, and the universal-joint 10 of its lower end is installed in the hemisphere face groove 11 on 8 sidewalls of ratchet chamber.And the flat fire ratchet 9 of the ratchet chamber 8 in the middle of being positioned at, the universal-joint 10 of its lower end is installed in the groove that inserts on the interior ratchet mounting 12 of axis.A straight spring 13 is set in each ratchet chamber 8, and an end of straight spring 13 is replaced on flat fire ratchet 9, and the other end is fixed on the axis 1.The speed change ratchet assembly comprises two inner ratch gears 14, output inner ratch gear 15, stop gear 16 and clutch cover 17.Three ratchet outlets 18 are arranged on the clutch cover 17, and the left end of clutch cover 17 has damping block chute 19, is equiped with magnet damping block 20 in damping block chute 19.At damping block chute 19 internal fixation locating dowel pin 21 is arranged.Clutch cover 17 is installed on the axis 1, and axis 1 whenever rotates counterclockwise 120 when spending, and just has a flat fire ratchet 9 to stretch out from the ratchet outlet 18 on the clutch cover 17, and other two ratchets 9 contract in ratchet chamber 8, and two inner ratch gears 14 are installed on the clutch cover 17.Output inner ratch gear 15 is installed in the right-hand member of clutch cover 17, and the axis hole 7 of front end from casing 3 right sides of output inner ratch gear 15 stretches out outside the change speed gear box, and captives joint with the sprocket wheel 23 on being contained in axis 1 by locating dowel pin 22, refills upper nut 24, and is tightened.The front end of axis 1 right-hand member and output inner ratch gear 15 is supported by the bearing 26 that is contained in the bearing 25 on axis 1 right side and be contained in the bearing seat of casing 3 right-hand members respectively.The left end of axis 1 is supported by the bearing in the bearing seat that is contained on the left end cap 4 27.Stop gear 16 is installed in the left end of clutch cover 17, detent axle 28 is arranged on left end cap, detent axle 28 passes the axis hole of detent 29 rear ends, with jump ring 30 location, one end of one torsion spring 31 is fixed on the detent 29, the front end of detent 29 contacts with stop gear 16, and when axis 1 rotates counterclockwise 120 when spending, detent 29 is replaced on a ratchet on the detent 29.Output gear component is made up of 3 different rolling bearings 34 of diameter, and three rolling bearings 34 are an integral structure.3 rolling bearings 34 are installed between two inner ratch gears 14, output inner ratch gear 15 and the internally toothed annulus 2, and corresponding the engagement.Internally toothed annulus 2 is connected by ball key 5 with casing 3.Oil hole 32 is arranged on casing 2, and oil hole 32 is sealed by embolism 33.

Claims (1)

1, speed changer for non-motor vehicle, comprise change speed gear box, axis (1), internally toothed annulus (2), speed change ratchet assembly and output gear component, change speed gear box is made up of casing (3) and left end cap (4), on the right side of left end cap (4) and casing (3) axis hole (6) and (7) is arranged respectively, it is characterized in that:

There is a plurality of ratchets chamber (8) at the middle part of A, axis (1), in each ratchet chamber (8), a flat fire ratchet (9) is set, there is a universal-joint (10) lower end of flat fire ratchet (9), universal-joint (10) can be installed in the hemisphere face groove (11) on the sidewall of ratchet chamber (8), also can be installed in the hemisphere face groove that inserts the ratchet mounting (12) in the axis, in each ratchet chamber (8) a straight spring (13) is set, one end of straight spring (13) is replaced on flat fire ratchet (9), and the other end is fixed on the axis (1);

B, the speed change ratchet assembly, comprise a plurality of inner ratch gears (14), output inner ratch gear (15), stop gear (16) and clutch cover (17), a plurality of ratchet outlets (18) are arranged on the clutch cover (17), the left end of clutch cover (17) has damping block chute (19), in damping block chute (19), be equiped with magnet damping block (20), at damping block chute (19) internal fixation locating dowel pin (21) is arranged, clutch cover (17) is installed on the axis (1), a plurality of flat fire ratchets (9) can be respectively a plurality of ratchets outlets (18) from the clutch cover (17) stretch out, a plurality of inner ratch gears (14) are installed on the clutch cover (17), output inner ratch gear (15) is installed in the right-hand member of clutch cover (17), the axis hole (7) of front end from casing (3) right side of output inner ratch gear (15) stretches out outside the change speed gear box, and captive joint with the sprocket wheel (23) on being contained in axis (1) by locating dowel pin (22), refill upper nut (24), the front end of axis (1) right-hand member and output inner ratch gear (15) is supported by the interior bearing (26) of bearing seat that is installed in the bearing (25) on axis (1) right side and is contained in casing (3) right-hand member respectively, the left end of axis (1) is supported by the bearing (27) in the bearing seat that is installed on the left end cap (4), stop gear (16) is installed in the left end of clutch cover (17), detent axle (28) is arranged on left end cap (4), detent axle (28) passes the axis hole of detent (29) rear end, locate with jump ring (30), one end of one torsion spring (31) is fixed on the detent (29), and the front end of detent (29) contacts with stop gear (16);

C, output gear component are made up of the different rolling bearing of a plurality of diameters (34), and a plurality of rolling bearings (34) are an integral structure.A plurality of rolling bearings (34) are installed between a plurality of inner ratch gears (14), output inner ratch gear (15) and the internally toothed annulus (2), and corresponding engagement, internally toothed annulus (2) is connected by ball key (5) with casing (3), oil hole (32) is arranged on casing (2), and oil hole (32) is sealed by embolism (33).

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