CN201090623Y

CN201090623Y - Four ball-pin type constant velocity universal joint

Info

Publication number: CN201090623Y
Application number: CNU2007200745448U
Authority: CN
Inventors: 石宝枢; 杨洪香
Original assignee: Individual
Current assignee: ZHEJIANG UIS DRIVELINE CO Ltd
Priority date: 2007-09-11
Filing date: 2007-09-11
Publication date: 2008-07-23
Anticipated expiration: 2017-09-11

Abstract

Disclosed is a collapsible four-ball-pin universal joint with constant velocity, comprising a four-column slot shell which is evenly divided into four parts circumferentially with the profile line parallel to the axis, four evenly distributed caliper-less slots, a four-pin frame composed of pin shafts with round-angled axial necks, four spherical rings with non-symmetric outer spherical surfaces and a plurality of needle rollers. The four spherical rings of the needle bearing match with the four channels on the four-column slot shell and are connected with the external spline of a transmission shaft through the internal spline of the four-pin frame. A drive shaft and a driven shaft can transfer motion and torque when certain axial displacement and angular displacement exist at the same time.

Description

Four ball pin style constant velocity universal joints

Affiliated technical field

But the utility model relates to a kind of universal joint of axial stretching.When master and slave moving axis has axial displacement and angular displacement simultaneously, can transmitting movement and four ball pin style constant velocity universal joints of torque.

Background technique

The three ball pin style universal joint of conventional construction, its housing only are three raceway grooves, and what be mated is three traditional ball pin bearings, the ball of three groups of symmetric form spheres is arranged and have the punching press back-up ring and the jump ring structure, show that through test and use following deficiency is arranged:

(1) three ball pin bearing complex structures of conventional construction, part is too many, the manufacture cost height, assembly process is many and complicated, and efficiency of assembling is extremely low.

(2) three ball pin bearing diameters of conventional construction are too little, only are 2mm, and bearing capacity is low; Easily wearing and tearing earlier, if the big product of specification, along with the increase of load, its more aggravation of losing efficacy.

(3) the three ball pin style universal joint bearing capacity of conventional construction is low, bears certain load for making it, certainly will increase boundary dimension, causes structure not compact, waste material.

(4) the three ball pin style universal joint of conventional construction, the equal trisection of the raceway groove of housing and spider, since asymmetric, processing and detection difficulty increased, and precision is difficult for guaranteeing.

Summary of the invention

In order to overcome some deficiencies of conventional construction, to be solved in the utility model is that the structure that exists of conventional construction is not compact, and part is many, the manufacture cost height, and bearing capacity is low, easily problem such as inefficacy.A kind of four ball pin style constant velocity universal joints of new structure have been designed.

The technological scheme that its technical problem that solves the utility model adopts is: change three ball pin bearings of conventional construction into four ball pin bearings, the packing ring of cancellation conventional construction three ball pins, jump ring and punching press back-up ring, four pin framves are only arranged, ball and completely adorn needle roller and form, for improving bearing capacity, strengthen the needle roller diameter, be the reasonable Arrangement space, make ball stressed evenly, the sphere of ball is designed to asymmetric structure, and ball is subjected to the restriction of four post pot shell raceway groove maximum diameters, self catcher own in the work, ball is not as long as just can come off in raceway groove, case design becomes symmetry and equally distributed four post pot shells, and ball cooperates with four post pot shell raceway grooves, four pin framves, ball and needle roller components connect by four pin frame splines and transmission shaft.

The beneficial effects of the utility model are: steadily, flexibly, reliably and accurately transmitting movement and the torque of four ball pin style constant velocity universal joints, and compact structure, reasonable, and friction factor is low, the transmission efficiency height, improve bearing capacity, be convenient to processing and check, improve work efficiency.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is a vertically positive insight structural map of the present utility model.

Fig. 2 is the horizontal section side view of Fig. 1.

1. transmission shafts in the way, 2. ball, 3. needle roller, 4. four pin frame, 5. circlip, 6. four post pot shells.

Embodiment

In Fig. 1, several needle rollers (3) are filled in the raceway of the two ribs of ball (2) band.Like this, totally four groups of single needle bearings are assembled to respectively on the five equilibrium bearing pin of four pin framves (4), this assembly connects with transmission shaft (1) external splines by four pin frame internal splines, circlip (5) by the band opening is locked at it on transmission shaft (1) by circlip groove, transmission shaft (1) and this assembly are respectively charged in the four post pot shell quartering raceway grooves shown in Figure 2 then, realize the purpose of transmitting movement and commentaries on classics distance.

In the embodiment shown in Figure 2, be convenient to assemble and enough extending amounts for making ball (2), four bearing pins of four pin framves (4) do not have the jump ring groove, for the bearing pin axle journal place of improving its intensity quartering replaces step surface by fillet.For making ball (2) have rational power transmission effect, the outer spherical surface of ball (2) is designed to asymmetric structure, and outer spherical surface miner diameter end (bearing pin axle journal end) is the plane, and outer spherical surface bigger diameter end (bearing pin exterior edge face) is designed to conical surface.For simplifying technology, needle roller (3) is selected the tack structure.

Claims

1. four ball pin style constant velocity universal joints, by four post pot shells, transmission shaft, four compositions such as pin frame, ball and needle roller, it is characterized in that: four balls cooperate with four equally distributed raceway grooves of four post pot shells respectively; The assembly of four pin frame, four balls and some needle rollers connects by four pin frame splines and transmission shaft.，

2. according to the described four ball pin style constant velocity universal joints of claim, it is characterized in that: the raceway groove of four post pot shells is the circumferential quartering and plain line and parallel axes; The quartering bearing pin of four pin framves does not have the jump ring groove and axle journal is a fillet; Four balls are that asymmetric outer spherical surface adds two rib structures, and wherein an end face is the plane, and the other end is a conical surface; Four middle raceways of the two ribs of ball are filled needle roller.

3. according to the described four ball pin style constant velocity universal joints of claim, it is characterized in that: the assembly direction of the outer spherical surface bigger diameter end of four balls is consistent with the exterior edge face of four bearing pins of four pin framves.