CN2171033Y

CN2171033Y - Ball type universal joint

Info

Publication number: CN2171033Y
Application number: CN 93218023
Authority: CN
Inventors: 蒯执中
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-07-07
Filing date: 1993-07-07
Publication date: 1994-07-06
Anticipated expiration: 2003-07-07

Abstract

The utility model relates to a universal ball joint driven by angular displacement, comprising a drive shaft, a middle shaft, a driven shaft, etc. Both ends of the middle shaft are designed into ball shape and is provided with a stationary annular key; two same transition balls are used for enclosing the annular key; the inner wall of each transition ball is provided with an annular key slot; outer wall is provided with a vertical key slot. The annular kay adopts the driving mode of the alternation of a horizontal key and a vertical key; the stress of a universal joint is uniform; the utility model can not be influenced by a dip angle and a larger angle; the utility model is suitable for high output and quick running. The utility model has the advantages of small size, low noise and long service life and can be used for an automotive industry.

Description

Ball type universal joint

The utility model belongs to the mechanical transmissioning technology field, further belongs to a kind of universal joint of angular displacement transmission.

Present employed universal joint has following three kinds usually: 1, plum blossom hair style shaft coupling, though this kind shaft coupling cost is low, because the inclination angle is little, intensity is low, can not be adapted to run up; 2, slide block type shaft coupling, though this kind shaft coupling inclination angle is big, power is big, because poor lubrication is easy to wearing and tearing, the life-span is short; 3, crosshead hookes-type universal joint, though the inclination angle is moderate, the life-span increases 1-2 doubly than the slide block type coupling drive, discontinuity, volume is big, and whole universal joint is all exposed, and ashing is easy to invade, and noise is bigger.

The purpose of this utility model provides a kind of inclination angle size that is not subjected to be influenced, and is adapted to high-power output and runs up and volume is little, the life-span is long, noise is low universal ball joint.

The utility model is achieved in that it is made up of driving shaft, jack shaft, driven axle, the jack shaft two ends are designed to sphere and fixing annular key are arranged, what surround annular key is two identical transitional balls, and the inwall of transitional ball has and annular key corresponding annular keyway, and outer wall has the annular key perpendicular to annular keyway, transitional ball can be rotated on the annular key of jack shaft, the structure of driving shaft and driven axle is identical, is two halves, and the one end is spherical, be buckled in outside the transitional ball, can on transitional ball, rotate.The utility model has changed the drive mechanism of existing universal joint, designed transitional ball and annular key, taked the kind of drive, made universal joint stressed evenly with horizontal key and axial bond alternate, not influenced by the inclination angle size, thereby adapted to high-power output and run up, because space has been saved in the key transmission, made the volume-diminished of universal joint again, moreover key transmission position is airtight, make ashing be difficult for invading, thereby greatly reduce noise, prolonged the life-span.

The utility model will be further described below in conjunction with accompanying drawing.

Fig. 1 is a plan view of the present utility model.

Fig. 2 is a sectional view of the present utility model.

The utility model is by driving shaft 1, jack shaft 2, driven axle 5 is formed, the two ends of jack shaft 2 are designed to sphere, and design has annular key 3, what surround annular key 3 is transitional ball 4, transitional ball 4 inwalls have and annular key 3 corresponding annular keyways, and outer wall has the annular key 6 perpendicular to keyway, and transitional ball 4 can be slided on annular key 3.Driving shaft 1 is identical with the structure of driven axle 5, is two halves, and the one end is spherical, is buckled in outside the transitional ball 4, can rotate on transitional ball 4; The other end is cylindrical, can make spline or splined shaft, if any flexible compensation, also can do flange and connect.Driving shaft 1 and driven axle 5 two halves separately can be in aggregates with bolt.Move moment at axle, the annular key 3 of jack shaft is regarded as horizontal key, then the annular key 6 of transitional ball is an axial bond, its inclination angle one is a horizontal move, and one is vertical movement, and no matter how move at the inclination angle, force bearing point all moves on annular key, be always producing balanced forces, intensity is consistent all the time, has overcome the stressed periodically variable weakness of existing universal joint.

Key transmission of the present utility model is contained mutually, and horizontal motion and vertical motion are not disturbed mutually, has dwindled space greatly, has dwindled the volume of whole universal joint, only is the 3/5-1/2 of cross hookes universal joint volume.

Key transmission of the present utility model position is all airtight, and ashing is difficult for invading.When assembling, add oiling agent, avoided existing universal joint must often add the weakness of oiling agent.Thereby noise is reduced to below 15 decibels, and the life-span is extended for 3-4 times of crosshead hookes universal joint.

The utility model is compared with existing universal joint, have to be adapted to high-power output, to run up, and volume is little, and noise is low, the advantage that the life-span is long.

Claims

1, a kind of universal ball joint, by driving shaft (1), jack shaft (2), driven axle (5) is formed, it is characterized in that: the two ends globulate of jack shaft (2) also has fixing annular key (3), surrounding annular key (3) is two identical transitional balls (4), transitional ball (4) inwall has and annular key (3) corresponding annular keyway, outer wall has the annular key (6) perpendicular to annular keyway, transitional ball (4) can go up at annular key (3) and rotate, driving shaft (1) is identical with the structure of driven axle (5), is two halves, and the one end is spherical, be buckled in outside the transitional ball (4), can go up in transitional ball (4) and rotate.