CN2830770Y

CN2830770Y - One-way running bearing

Info

Publication number: CN2830770Y
Application number: CN 200520013854
Authority: CN
Inventors: 傅玉明; 贾东明; 孙晓清
Original assignee: Naisite Bearings Co ltd Hangzhou
Current assignee: Naisite Bearings Co ltd Hangzhou
Priority date: 2005-08-08
Filing date: 2005-08-08
Publication date: 2006-10-25
Anticipated expiration: 2015-08-08

Abstract

The utility model relates to the unidirectional operation bearing, arranges the retainer member in the space of inner ring and outer ring, three groups of grooves of the both ends of the surface of retainer member respectively attaching one group of chock and one group of thrust spring and one group of steel ball are arranged.Respectively with the moving contact of the interior flour milling of inside and outside circle, thrust spring one crown connects the chock corner angle on one side, one crown indentation groove inwall, power effect outside makes the inner ring counter-rotating, then thrust spring makes the chock corner angle produce reverse stopping power to the inner ring flat surface grinding, stop the inner ring backward rotation, carry out self-locking, reach the designing requirement of unidirectional operation.

Description

The unidirectional operation bearing

Technical field the utility model is to belong to the fixed driving component than transmission of machinery, is used to import a kind of unidirectional operation bearing with the deceleration or the speedup transmission of output shaft.

The existing drive bearing of background technique just is used for, slow down in the other direction or the speedup transmission, driving mechanism for design in some equipment (device) requires unidirectional driving component, as washing machine, the interior bucket in the drive mechanism in the car air conditioner or the unidirectional operation bearing of impeller and line shaft, this class formation is interior, design is adopted and is dolioform voussoir in the retainer between the outer ring, it is circular-arc that two is, together, the moving contact of outer ring inner plane, the single direction operation that keeps inner ring, realize one-way rotation, because in voussoir two circular arc is same, the guide groove of outer ring is the cambered surface contact, the stopping power of inner ring counter-rotating is difficult to moment and only makes the inner ring Driving force immediately, braking effect remains further to be improved, especially in the transmission of fine structure, and the designing requirement rotation precision height of the unidirectional running of bearing inner race.

Summary of the invention goal of the invention of the present utility model is: in precision drive mechanical structure, for transmission shaft provides a kind of unidirectional operation bearing, keep the normal rotation of one-way driving mechanism.

For achieving the above object, following technological scheme is adopted in the utility model design: it consists predominantly of inner ring, outer ring, retainer member, end cap, chock, steel ball, thrust spring and seal ring.Be furnished with the retainer member between inner ring and the outer ring, be connected with end cap and seal ring at the two ends of inside and outside circle, the retainer member places among the interior flat surface grinding of inner ring flat surface grinding and outer ring, and the end cap that joins with inside and outside circle end face connects.On the both ends of the surface of retainer member, be shaped on three groups of grooves respectively, wherein two groups of grooves are communicated with in twos, attaching has steel ball, chock and thrust spring respectively, steel ball is respectively with the circular arc flat surface grinding is moving in circular arc flat surface grinding and the outer ring contacts in the inner ring, the flat surface grinding is moving in one at chock band corner angle and the inner ring contacts, one with the outer ring in the flat surface grinding is moving contact, thrust spring two is respectively on the inwall of apical grafting chock and groove, one group of groove mouth of one group of its correspondence of projection connection capping on the end cap.Described chock ovalize, a headband has the corner angle of protrusion, the radius of arc of one at corner angle of band is greater than the radius of arc of other end, the drift angle of corner angle on the radius of arc circumference of same head, 40 °～55 ° of the angles of corner angle.

The oval chock that has corner angle is adopted in the utility model design, it and moving contact the in the interior flat surface grinding of inside and outside circle, thrust spring location pushing tow chock, when in case inner ring is subjected to backward rotation power, thrust spring roof pressure chock, the corner angle of chock produce a reverse stopping power to the interior flat surface grinding of inner ring, carry out self-locking and have good braking effect, reach designing requirement, prevent the inner ring backward rotation, accurately keep the rotating mechanism unidirectional operation.

Description of drawings Fig. 1 is the utility model topology view.

Fig. 2 is a retainer element structure view.

Fig. 3 is the chock view.

The 1-seal ring, 2-end cap, 3-projection, 4-pin, 5-outer ring 6-retainer member, 7-thrust spring, 8-steel ball, 9-chock, 10-elongate recesses, 11-circular hole, 12-inner ring, 13-semi-circular recesses, 14-rectangular recess, 15--corner angle.

Below the embodiment, as follows with accompanying drawing in conjunction with the embodiments: as to be processed with one group of rectangular recess that all distributes 14 and group leader's connected in star 10 and one group of semi-circular recesses 13 on the disc of the upper/lower terminal face of the retainer member 6 of circle shape to the technical solutions of the utility model detailed description, rectangular recess 14 is communicated with elongate recesses 10, consults Fig. 2.Insert oval chock 9 in the rectangular recess 14, elongate recesses 10 is put into thrust spring 7, the inwall of difference apical grafting oval chock 9 corner angle one side, thrust spring 7 two and elongate recesses 10.Corner angle 15 are towards the below in the inboard of retainer member 6 for 15 1 at chock 9 band corner angle, and with the moving contact in flat surface grinding in the inner ring 12, the other end of chock 9 is in the outside of retainer 6, with the moving contact in flat surface grinding in the outer ring 5.Semi-circular recesses 13 supports steel ball 8, and steel ball 8 contacts with circular arc flat surface grinding in the inside and

outside circle

12 and 5 is moving.The retainer member 6 that assembles one group of steel ball 8 and one group of chock 9 and one group of thrust spring 7 is assemblied between inside and outside

circle

12 and 5, being processed with circular hole 11 on the same plane of retainer member 6 rectangular recess 14 and elongate recesses 10 is connected with the pin on the end cap 24, the notch of corresponding projection 3 butt joint elongate recesses 10 on the end cap 2 prevents thrust spring 7 displacement or come off in elongate recesses 10.End cap 2 is right after inside and

outside circle

12 and 5, and the inside and outside circle 12 of outer seal ring 1 snapping and 5 presses end cap 2, consults Fig. 1.One group of chock 9 and one group of thrust spring 7 and one group of steel ball 8 are placed at the square groove 14 of a group leader corresponding on retainer member 6 upper and lower two planes respectively between phase of equality, elongate recesses 10 and semi-circle groove 13, steel ball 8 is with circular arc flat surface grinding in the inner ring 12 and moving contact the in 5 interior circle flat surface grindings, outer ring; 15 1 at chock 9 band corner angle are with the moving contact in flat surface grindings in the inner ring 12, the thrust spring 7 pushing tow chocks 9 in the elongate recesses 10, chock 9 ovalizes, corner angle 15 below the one head, the radius of arc R of this novel this head of setting ₁=2.953cm, other end radius of arc R ₂=2.7cm, Fig. 3 is consulted in the α of corner angle 15=45 °.Oval chock 9 is seated in the rectangular recess 14, and corner angle 15 are handled the circular arc below of same relatively head; When being inner ring 12 forwards (clockwise) running, corner angle 15 are at the end of inner ring 12 sense of rotation; During inner ring 12 reverse (counterclockwise) running, corner angle 15 are in the top of inner ring 12 rotations, under thrust spring 7 effects, stop inner ring 12 counter-rotatings, realize self-locking.

One group of chock of the present utility model 9, one group of thrust spring 7 and one group of steel ball 8 are set at 12 respectively.The number of one group leader's square groove 14, group leader's connected in star 10 and one group of semi-circular recesses 13 of retainer member 6 upper/lower terminal faces is respectively 12.

Claims

1. unidirectional operation bearing, it consists predominantly of inner ring, outer ring, retainer member, steel ball, end cap, seal ring, chock and thrust spring, the intermediate arrangement retainer member of inner ring and outer ring, both ends of the surface at inside and outside circle are connected with end cap and seal ring, the retainer member connects end cap, be shaped on three groups of grooves on the both ends of the surface of retainer member respectively, attaching has steel ball and chock and thrust spring respectively, it is characterized in that rectangular groove (10) is communicated with rectangular recess (14), oval chock (9) one headbands have corner angle (15); Thrust spring (7) two is apical grafting chock (9) and groove (10) inwall respectively.

2. unidirectional operation bearing according to claim 1 is characterized in that (15) radius of arc R of chock (9) band corner angle ₁=2.95cm is greater than other end radius of arc R ₂=2.7cm, the drift angle of corner angle (15) is on the circumference of same radius.

3. according to the described unidirectional operation bearing of claim 1, it is characterized in that oval chock (9) in rectangular recess (14), (15) one at corner angle of band are in retainer member (6) inboard, and corner angle (15) are towards the below.

4. unidirectional operation bearing according to claim 1 is characterized in that the projection (3) on elongate recesses (10) the butt joint end cap (2) on the retainer member (6).

5. unidirectional operation bearing according to claim 1 is characterized in that corner angle α=45 °.