CN2044237U

CN2044237U - Reciprocating central shaft transmission device for man-power vehicles

Info

Publication number: CN2044237U
Application number: CN88217355U
Authority: CN
Inventors: 唐寰治
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-07-25
Filing date: 1988-07-25
Publication date: 1989-09-13

Abstract

The utility model discloses a reciprocating central shaft transmission device for man-power vehicles, belonging to the technical field of mechanical drive, comprising left and right cranks, left and right half axles, a left case, a main case, a transmitter, a chain wheel, a steel bowl, and a steel ball, etc. Because the utility model swings back and forth when working, the dead point of the crank up mechanism is eliminated. The utility model has the advantages of high efficiency, beautiful appearance, stable operation, and high reliability. The utility model serves as a sealed component, which can be loaded in a hole of the central axis of a vehicle frame without changing the prime vehicle frame much. The reciprocating bicycle is formed, which has low cost and can be used for various man-power vehicles compared with other reciprocating tricycles.

Description

Reciprocating central shaft transmission device for man-power vehicles

The utility model belongs to shaft transmission in the rickshaw.The domestic and international middle shaft transmission that adopts generally adopts crank up mechanism at present.Though this mechanism is simple, reliable, it has two dead points up and down, and two poor efficiency districts are arranged near the dead point.When car is among cruising, because movement inertia can make crank cross the dead point more like a cork more greatly.But, go up a slope or against the wind the time,, need to adjust angle firmly crank is turned round continuously by people's ankle joint because movement inertia is less when car starting, load-carrying.As strengthening the speed of a motor vehicle in motion, just need to accelerate both feet and pedal the frequency of stepping on.

In view of above-mentioned reason, U.S.'s this utility companies has in the sea developed the reciprocating type bicycle of a kind of foot pedal type crank.Its structure is equipped with a ratchet and loads onto sprocket wheel for the two ends on the axle skin of rickshaw trailing wheel, and uses chain, and cable wire links to each other with two lever pedals by pulley.Utilize back and forth to scrunch the rotation of lever dimension movable sprocket, thereby driven advancing of trailing wheel.And two lever pedals are made up of a rocker structure.Such method can have been eliminated two dead points and poor efficiency district, but because such structure is bigger to original vehicle frame change, and because drive disk assembly is huger, so fail to enter practical field.

The utility model aims to provide a kind of to adopting existing rickshaw vehicle frame and sprocket wheel, and can overcome the dead point in the crank up mechanism and eliminate the rickshaw in poor efficiency district reciprocating type in shaft transmission.

The utility model is made up of institutes such as crank, semiaxis, housing, overcoat, bearing, sprocket wheels.Its structure is as shown in Figure 1: left shell 3 is fixed in the center tap of rickshaw vehicle frame, and the main casing 4 (1), 4 (2) that is divided into left and right sides two halves places the both sides of driver 6, and is connected with left shell 3.Left half axle 2 passes left shell 3 and cooperates with left shell 3 by bearing, and the left end of left half axle 2 is connected with crank 1, and right-hand member cooperates with driver 6.The left end of right axle shaft 8 cooperates with driver 6, and right-hand member is connected with crank 9, and right axle shaft 8 in main casing 4 (2), is equipped with bearing between the outer garden of main casing 4 and the interior garden of overcoat 7 by bearing fixing.Sprocket wheel 5 is enclosed within on the overcoat 7, and fixing with overcoat 7.Driver 6 can adopt different version, now lift three kinds of formal specifications it.

Fig. 2 is the assembling scheme drawing that adopts the middle shaft transmission of sliding lock formula driver.The left and right sides two-semiaxle of this driver 10, the 14 one ends of cranking arm are all made quadrant gear.It is two very heavy 15 that the other end all is equipped with, and very heavy spring 16 is close to overcoat 7 inner rings with very heavy 15.The inner ring of overcoat 7 is made unidirectional profile of tooth.

Fig. 3 be semiaxis crank arm 10, very heavy 15 with the mesh schematic representation of overcoat 7.It is 10,14 affixed with left and right sides two-semiaxle 2,8 respectively that left and right sides two-semiaxle is cranked arm.Left half axle crank arm 10 quadrant gear and idle pulley 11 engagements, idle pulley 11 and driven miniature gears 12 engagements in left side, driven miniature gears 13 in right side and driven miniature gears 12 coaxial being installed on the main casing 4 in left side, and be meshed with crank arm 14 scalloped end gear of right axle shaft.When people's pin scrunches left crank downwards, make left crank to lower swing, left half axle and the left half axle generation forward rotation of cranking arm, place semiaxis the very heavy under the effect of very heavy spring of an end of cranking arm, the internal gearing that very heavy and an overcoat must be arranged, thus drive overcoat and sprocket rotation.The quadrant gear that the quadrant gear semiaxis that meanwhile left quadrant gear semiaxis is cranked arm is cranked arm is partly by idle pulley, and the driven miniature gears in the left and right sides transmits motion to right axle shaft and cranks arm, and makes the right axle shaft generation backward rotation of cranking arm.Very heavy internal tooth along overcoat on right axle is cranked arm slides.Vice versa.

Fig. 4 is the middle shaft transmission assembling scheme drawing that adopts friction ratchet gear formula driver.The center of two

ratchets

15,16 is affixed with left and right sides semiaxis 2,8 respectively about this driver, and the garden post roller 17 on the ratchet is being adjacent under the effect of spring 18 on the smooth garden cylindricality inner ring of overcoat 7.

Fig. 5 is the assembling scheme drawing of friction ratchet gear and overcoat 7.This driver comes down to a friction ratchet gear and overcoat is formed an overriding clutch, and its inner ring and semiaxis are fixed, and the outer ring cooperates with overcoat.

Fig. 6 is the middle shaft transmission assembling scheme drawing that adopts engagement type driver.Two-semiaxle 20, the 21 one ends of cranking arm in the driver left and right sides are all made quadrant gear, and the other end is all made the Y type and cranked arm, and have the opening kidney slot of symmetry on the biside plate of the jag of cranking arm.Unidirectional work done gear 22,23 places kidney slot, and respectively with the internal gearing of overcoat 7 inner rings, bearing pin 24 is fixed on semiaxis and cranks arm on the side plate of 20,21 jags, and it is 20,21 affixed with left and right sides two-semiaxle 2,8 respectively that two-semiaxle is cranked arm.Left half axle crank arm 21 quadrant gear end and idle pulley 25 engagements, idle pulley 25 and driven miniature gears 26 engagements in left side, driven miniature gears 27 in right side and left side driven 26 coaxial being installed on the main casing 4, and with crank arm 21 scalloped end gear mesh of right axle shaft.

Fig. 7 is the assembling scheme drawing of the bearing pin on semiaxis is cranked arm when embedding 7 engagements of the unidirectional work done gear of the soft backlash of unidirectional work done tooth and overcoat.The texture ratio of this version and sliding lock formula driver is more close.Its difference is that the former cranks arm at semiaxis and produces when just changeing, be fixed on three between cog semiaxis that three bearing pins on the biside plate of jag embed a work done pinion mates side and unidirectional work done pinion mate axle of going up kidney slot of cranking arm and fit tightly, at this moment unidirectional work done miniature gears can not rotation.So semiaxis is cranked arm by unidirectional work done miniature gears, drive the overcoat and the sprocket wheel rotation that are engaged with.The same with the pulley-type driver, the unidirectional work done miniature gears on right side and pin break away from.Vice versa.Therefore when people's both feet were constantly pedaled pedal up and down, left and right sides crank is swing up and down reciprocatingly alternately, makes sprocket wheel all the time towards being rotated in the forward.

Crank is a reciprocally swinging during the utility model work, so eliminated dead point in the axis mechanism and poor efficiency district in the swinging, makes rickshaw at starting-up to speed, goes up a slope, and is laborsaving in the time of against the wind, and can improve the efficient about 20%.The pedal that only need pedal a little on the crank when cruising can keep the original speed of a motor vehicle, and needn't accelerate the crank up frequency.

The embodiment that rejoins below further specifies the utility model.One end of left side crank and left half axle is affixed with pin.Left half axle is placed among the left shell, and with steel bowl and steel ball composition bearing semiaxis is fixed in the left shell.Left shell and main casing bolt together.One end and the crank of right axle shaft are affixed, and the other end passes the right half part of main casing, also are fixed on the main casing with steel bowl and steel ball.Main casing divides left and right sides two parts, and is connected with bolt by a crescent shape fixed block in the chamber.Fixed block had both played the reinforcement interconnect function, had played the angle of restriction reciprocally swinging again.Be about 165 for good generally with pendulum angle.In order to adapt to the different model of A type Type B C type bicycle, the left shell of A, C type be can be made into the hollow Cylinder of step, in the center tap that is fixed on vehicle frame.For the left shell of Type B car, left and right sides two parts can respectively be divided into the hollow step spiro column of M35 * 1.5.

Claims

1, the reciprocating type transmission device of a kind of rickshaw, by crank, semiaxis, housing, overcoat, bearing, sprocket wheels etc. are formed, it is characterized in that: left shell 3 is fixed in the center tap of rickshaw vehicle frame, the main casing 4 (1) that is divided into left and right sides two halves, 4 (2), place the both sides of driver 6, and be connected with left shell 3, left half axle 2 passes left shell 3 and cooperates with left shell 3 by bearing, the left end of left half axle is connected with crank 1, right-hand member cooperates with driver 6, and the left end of right axle shaft 8 cooperates with driver 6, and right-hand member is connected with crank 9, right axle shaft 8 by bearing fixing main casing 4 in main casing 4 (2) outer garden and the interior garden of overcoat 7 between be equipped with bearing, sprocket wheel 5 is enclosed within on the overcoat 7 and is fixing with overcoat 7.

2, transmission device according to claim 1, it is characterized in that described driver 6 adopts sliding lock formula driver, the left and right sides two-semiaxle of driver cranks arm 10,14, the one end is all made quadrant gear, the other end all is equipped with two very heavy 15, very heavy spring 16 is close to overcoat 7 inner rings with very heavy 15, the inner ring of overcoat 7 is made unidirectional profile of tooth, left and right sides two-semiaxle cranks arm 10,14, respectively with left and right sides two-semiaxle 2,8 is affixed, left half axle crank arm 10 quadrant gear end and idle pulley 11 engagements, idle pulley 11 and driven miniature gears 12 engagements in left side, driven miniature gears 13 in right side and driven miniature gears 12 coaxial being installed on the main casing 4 in left side, and be meshed with crank arm 14 scalloped end gear of right axle shaft.

3, transmission device according to claim 1, it is characterized in that described driver 6 adopts friction ratchet gear formula driver, about two ratchets 15,16 center is affixed with left and right sides semiaxis 2,8 respectively, and the garden post roller 17 on the ratchet is adjacent on the smooth garden cylindricality inner ring of overcoat 7 in the effect of spring 18.

4, transmission device according to claim 1, it is characterized in that described driver 6 has adopted engagement type driver, driver left and right sides two-semiaxle cranks arm 20,21, the one end is all made quadrant gear, the other end is all made shape and is cranked arm, crank arm and have the opening kidney slot of calculating on the biside plate of jag, the unidirectional moving gear 22 of doing, 23, place kidney slot, and respectively with the internal gearing of overcoat 7 inner rings, bearing pin 24 is fixed on semiaxis and cranks arm 20, on the side plate of 21 jags, two-semiaxle cranks arm 20,21 respectively with left and right sides semiaxis 2,8 is affixed, left half axle crank arm 21 quadrant gear end and idle pulley 25 engagements, idle pulley 25 and driven miniature gears 26 engagements in left side, driven miniature gears 27 in right side and driven miniature gears 26 coaxial being installed on the main casing 4 in left side, and be meshed with crank arm 21 scalloped end gear of right axle shaft.