CN205602042U

CN205602042U - Automatic stepless speed changing device for bicycle

Info

Publication number: CN205602042U
Application number: CN201620330742.5U
Authority: CN
Inventors: 郭华泽
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-04-11
Filing date: 2016-04-11
Publication date: 2016-09-28
Anticipated expiration: 2026-04-11

Abstract

The utility model provides the stepless automatic gearbox of bicycle, including two inner rings, two outer loops, 20 automatic pressure device more than individual on water chestnut awl and the inner ring, constitutions such as counter gear, including a plurality of water chestnuts awls is evenly arranged with the holder around the ring axis, but every water chestnut awl free rotation just radially freely removes along the inner ring, every water chestnut awl four sides and two inner rings, two outer loop contacts, two inner rings are close mutually or part, make parallel outer the moving of a plurality of water chestnuts awls move in or, make two outer loops part or be close simultaneously, the change of interior ring sum outer loop and every water chestnut tapered joint contact, the inner rings and each diamond cone changes the radius from the contact point to the axis of the diamond cone, thereby the mesh that the automatic infinitely variable of realization bicycle travel.

Description

Automatic stepless speed-changing device for bicycle

Technical field

This utility model relates to a kind of derailleur, is specifically related to a kind of bicycle use mechanical friction Formula automatic step-less variable drive.

Background technology

The variator that bicycle uses at present has rear axle internal speed-changing formula variator and axis, rear axle chain-drive Outer variator.Rear axle internal speed-changing formula speed changer structure is more complicated, use fewer.Conventional axis, after The outer variator of axle chain-drive, because most time is not in approximately the same plane when active, driven chain working gear, Card chain easily occur and falls chain phenomenon, and needing two speed change driving lever combination operations to complete gearshift, having gearshift to adjust Joint mechanism is complicated, part is many, need manually there are the shortcomings such as level regulation.Patent ZL01108801.X provides one Plant mechanical friction type stepless speed change device, with two or more Pedicellus et Pericarpium Trapae cone one Pedicellus et Pericarpium Trapae cone group of composition, many group internal ring and outer shroud Structure realize infinitely variable speeds, but be used on bicycle and also exist that structure is complicated, the accuracy of manufacture requires high lacking Point.

Summary of the invention

The purpose of this utility model is according to patent ZL01108801.X, in conjunction with bicycle shift feature, carries Supply the bicycle use mechanical friction type automatic stepless speed change that a kind of simple in construction, slewing range are wide, simple to operate Actuating device.

This utility model adopts the following technical scheme that more than 20 single Pedicellus et Pericarpium Trapaes cone (2) are equal with retainer (9) The even inner ring axis surrounding that is arranged in, each single Pedicellus et Pericarpium Trapae cone radially can move freely along internal ring, each Pedicellus et Pericarpium Trapae axis of cone line Moment all with inner ring axis keeping parallelism, inner ring axis overlaps with outer ring axis, internal ring, outer shroud, Pedicellus et Pericarpium Trapae bore all Can be freely rotatable around own axes, symmetrical and each Pedicellus et Pericarpium Trapae cone the four sides of two internal ring, two outer shrouds contacts, in two When ring is close to each other, makes all Pedicellus et Pericarpium Trapaes bore the most parallel outer shifting, and make two outer shrouds separated from each other, when two internal ring Time separated from each other, each Pedicellus et Pericarpium Trapae bores the most parallel interior shifting, and two outer shrouds are close to each other, internal ring and outer shroud with The change of each Pedicellus et Pericarpium Trapae tapered joint contact makes contact point change to the radius of Pedicellus et Pericarpium Trapae axis of cone line, thus realizes stepless Speed change purpose.

Each Pedicellus et Pericarpium Trapae cone may be produced that hollow-core construction, internal ring, outer shroud and Pedicellus et Pericarpium Trapae cone can use suitable high friction system Count material, and internal ring and outer shroud are manufactured into removable, it is also possible to the symmetrical rotary body of steel ball or variable diameters Replace Pedicellus et Pericarpium Trapae cone.

Any one in fixing internal ring, outer shroud, Pedicellus et Pericarpium Trapae cone retainer, just realize between other two input, The stepless change of output speed.

Fixing Pedicellus et Pericarpium Trapae cone retainer, internal ring inputs, and outer shroud output power, the two flexible bodies of outer interannular make outside two Ring is the most close, and elastic big I manual adjustment, and in two, interannular has automatic pressurizing device, according to voluntarily Turner condition and foot-operated dynamics are automatically adjusted two internal ring close to pressure, it is achieved bicycle automatic stepless speed change travels. Automatic pressurizing device is available becomes lift angle edge cam pressue device, tight conversion automatic pressurizing device and machine Tool formula automatic speed regulation pressue device, for increasing buncher moment of torsion, utilizes a pair gear to increase internal ring rotating speed And make it rotate backward.

Fixing outer shroud connector, is bored retainer input power, internal ring output power by Pedicellus et Pericarpium Trapae, cancels and automatically adding Pressure device, in two, the flexible body of interannular makes internal ring the most close, manually regulation two outer ring spacings, it is achieved voluntarily Car speed change travels, and advantage is to cancel gear and automatic pressurizing device.

Fixing internal ring, is bored retainer input power, outer shroud connector output power by Pedicellus et Pericarpium Trapae, cancels and automatically adding Pressure device, the two flexible bodies of outer interannular make outer shroud the most close, manually ring spacing in regulation two, it is achieved voluntarily Car speed change travels, and advantage is to cancel gear and automatic pressurizing device.

The beneficial effects of the utility model are: use shunting multipoint driving to increase contact point, increase transmission merit Rate；Use speedup to turning gear, increase moment of torsion and make internal ring rotate backward preferably to mate bicycle running Feature；Use unloading-structure, make each power on actuated element and pressue device balance each other at internal mutual, adopt Bore with the Pedicellus et Pericarpium Trapae of flat structure, make the dynamic loss of brill little, improve transmission efficiency.

Accompanying drawing explanation

Fig. 1 is this utility model structural representation.

Fig. 2 is deformation Pedicellus et Pericarpium Trapae wimble structure schematic diagram.

Fig. 3 is the speed changer structure schematic diagram being arranged on rear axle.

Outer shroud 1 Pedicellus et Pericarpium Trapae bores 2 internal ring 3 outer shroud connectors 4 to gear 5,6 minor sprocket 7 rear axle 8 Pedicellus et Pericarpium Trapae cone retainer 9 one-way clutch 10 automatic pressurizing device 11 chainlet wheel shaft 12

Detailed description of the invention

As it is shown on figure 3, Pedicellus et Pericarpium Trapae bores retainer (9), back axle (8) is rigidly connected with bicycle rack, single To clutch (10), outer shroud connector (4), gear (5) can be freely rotatable around back axle (8), unidirectional Clutch (10) is connected with rear wheel, and outer shroud connector (4) is enclosed within one-way clutch (10), outer shroud (1) And can not rotate between outer shroud connector (4) but can horizontally slip, outside two relative to outer shroud connector (4) Between ring (1), flexible body (not drawing) makes two outer shrouds close to each other, when variator does not works, and two outer shrouds The elasticity utilizing elastomer is close together, and two internal ring are divided among maximum position, gear (5) and gear (6) naturally Intermeshing, gear (5) is rigidly connected with automatic pressurizing device (11), minor sprocket (7) and gear (6) Being rigidly connected and be enclosed within chainlet wheel shaft (12), internal ring (3) slips on automatic pressurizing device (11), Internal ring (3), outer shroud (1) and each Pedicellus et Pericarpium Trapae cone (2) have four contact points, Pedicellus et Pericarpium Trapae cone retainer (9) and chainlet Wheel shaft (12) is rigidly connected with vehicle frame.

During work, chain-driving minor sprocket (7) and gear (6) rotate, gear (6) driven gear (5) reversion, gear (5) also drives automatic pressurizing device (11) to invert, automatic pressurizing device (11) Making two internal ring (3) rotate and close to each other according to loading condition, frictionally drives Pedicellus et Pericarpium Trapae cone (2) to rotate, Pedicellus et Pericarpium Trapae cone (2) drives outer shroud (1) to rotate, and outer shroud (1) passes through outer shroud connector (4) and one-way clutch (10) turn a wheel.When loading big, internal ring (3) makes Pedicellus et Pericarpium Trapae cone (2) move outward, and internal ring (3) is bored with Pedicellus et Pericarpium Trapae (2) contact point enlarging radius, outer shroud (1) reduces with Pedicellus et Pericarpium Trapae cone (2) contact point radius, makes outer shroud (1) Driving rear wheel moment of torsion to increase, rotating speed is slack-off, and speed is slack-off.Load hour, elastomer makes two outer shrouds (1) Close, become big with Pedicellus et Pericarpium Trapae cone (2) contact point radius, and make two internal ring (3) separately, contact with Pedicellus et Pericarpium Trapae cone (2) Point radius diminishes, and makes outer shroud (1) drive rear wheel moment of torsion to reduce, and rotating speed accelerates, and speed increases.

Claims

1. an automatic bicycle speed variator, including more than 20 single Pedicellus et Pericarpium Trapae cones, Pedicellus et Pericarpium Trapae cone retainer, two outer shrouds, Two internal ring, it is characterised in that: multiple single Pedicellus et Pericarpium Trapaes cone Pedicellus et Pericarpium Trapae cone retainer is evenly arranged in inner ring axis surrounding, Each Pedicellus et Pericarpium Trapae cone radially can move freely along internal ring, and each Pedicellus et Pericarpium Trapae axis of cone line moment and inner ring axis keep flat OK, inner ring axis overlaps with outer ring axis, internal ring, outer shroud, Pedicellus et Pericarpium Trapae cone all can be freely rotatable around own axes, Two internal ring, two outer shrouds symmetrical and each Pedicellus et Pericarpium Trapae cone four sides contact, the two flexible bodies of outer interannular make two outer shrouds oneself The most close, and elastic big I manual adjustment, in two, interannular has automatic pressurizing device, utilizes a pair tooth Wheel increases internal ring rotating speed and makes it rotate backward.

Automatic bicycle speed variator the most according to claim 1, it is characterised in that: fixing outer shroud connector, Bored retainer input power, internal ring output power by Pedicellus et Pericarpium Trapae, cancel automatic pressurizing device and to gear, in two The flexible body of interannular makes internal ring the most close, manually adjustable two outer ring spacings.

Automatic bicycle speed variator the most according to claim 1, it is characterised in that: fixing internal ring, Pedicellus et Pericarpium Trapae bore Retainer input power, outer shroud connector output power, cancel automatic pressurizing device and to gear, outside two The flexible body of interannular makes outer shroud the most close, ring spacing in manually adjustable two.

Automatic bicycle speed variator the most according to claim 1, it is characterised in that: automatic pressurizing device can profit Add with becoming lift angle edge cam pressue device, tight conversion automatic pressurizing device and mechanical type automatic speed regulation Pressure device.

Automatic bicycle speed variator the most according to claim 4, it is characterised in that: each Pedicellus et Pericarpium Trapae cone may be produced that Hollow-core construction, internal ring, outer shroud and Pedicellus et Pericarpium Trapae cone can use suitable high coefficient of friction material, internal ring and outer shroud system Cause removable, it is also possible to the symmetrical rotary body of steel ball or variable diameters replaces Pedicellus et Pericarpium Trapae cone.