CN2663718Y

CN2663718Y - One-way bearing

Info

Publication number: CN2663718Y
Application number: CN 200320120753
Authority: CN
Inventors: 顾峰柏; 李兴贤; 于福康
Original assignee: WUXI BOKAI LIGHT BEARING CO Ltd
Current assignee: WUXI BOKAI LIGHT BEARING CO Ltd
Priority date: 2003-12-11
Filing date: 2003-12-11
Publication date: 2004-12-15
Anticipated expiration: 2013-12-11

Abstract

The utility model discloses a one-way bearing in a clutch of a washing machine, comprising an inner ring, an outer ring and a holder between the inner ring and the outer ring; one axial side of the holder is provided with steel balls; two axial sides of the holder are provided with annular cover boards. The other axial side of the holder is provided with a plurality of vertical pylomes which are provided with shim blocks. Two sides of the vertical pylome along circle direction are planes; two sides of the shim block corresponding to the two planes of the pylome are also planes; gap is between the two planes of the vertical pylome and the shim block. Two head faces of the shim block are arc surfaces; the center of the arc surface near the inner ring deviates an angle from the center of the shim block with the sun. A chamfer angle and a salient angle with wedgy cross sections are processed on the planes of the vertical pylome and the shim block in counter-clockwise near the inner ring; a blind hole provided with a spring is processed on the clockwise plane of the vertical pylome. With the one-way bearing, the utility model is simplified in clutch structure, stable and reliable in transmission, low in failure rate and low in production cost.

Description

Unilateral bearing

(1) technical field

The utility model relates to a kind of bearing.Specifically, be unilateral bearing on the clutch coupling of washing machine.Also be applicable to rate conversion, prevent mechanical transmission occasions such as reverse and intermittent movement.

(2) background technique

Two cover bearings mostly are installed on the clutch coupling of washing machine.This two covers bearing is common deep groove ball bearing, and a cover drives washes the washing tube rotation, another set of drive dehydration barrel rotation.When washing finishes to need to dry, must make washing tube stall, spin dryer tube rotation by complicated mechanical driving mechanism and electrical equipment control.Because this clutch needs complicated mechanical driving mechanism and electrical equipment control, not only make the structure more complicated of clutch coupling of washing machine, volume is big, cost of production is higher, and stability of transmission is relatively poor, rate of fault is higher.

(3) summary of the invention

The purpose of this utility model is to provide a kind of unilateral bearing.Adopt the clutch of this unilateral bearing, not only simple in structure, transmission is reliable and stable, rate of fault is low, also can reduce production costs.

Above-mentioned purpose of the present utility model is realized by following technical solution:

Unilateral bearing of the present utility model contains inner ring and outer ring, between inside and outside circle retainer is arranged.An axial side of retainer is equipped with steel ball, and there is annular cover plate the axial both sides of retainer.Its structural feature is that the axial opposite side of retainer has some radial direction through hole, and voussoir is arranged in the radial direction through hole.Said radial direction through hole two sides along the circumferential direction is the plane, with corresponding voussoir two sides, this two plane also be the plane, corresponding two interplanars of radial direction through hole and voussoir leave the gap.The both ends of the surface of voussoir are respectively the arc shaped surface that matches with inside and outside circle, and the angle in voussoir center is departed from the center of circle of the arc shaped surface of close inner ring with the sun.At the inner circle of radial direction through hole and the anticlockwise plane of voussoir place, be processed with chamfering and salient angle that cross section is a wedge shape respectively.Be processed with blind hole at radial direction through hole by on the clockwise plane, the inner end of blind hole is equipped with spring to the outer ring lopsidedness in it.The two ends of this spring offset with voussoir and blind hole bottom respectively.

Adopt such scheme, have the following advantages:

Because unilateral bearing of the present utility model not only has some steel balls on its retainer, also be processed with some radial direction through hole.Voussoir is arranged in the radial direction through hole, and leave the gap between voussoir and radial direction through hole.The both ends of the surface of voussoir are respectively the arc shaped surface that matches with inside and outside circle, and the angle in voussoir center is departed from the center of circle of the arc shaped surface of close inner ring with the sun; At the inner circle of radial direction through hole and the anticlockwise plane of voussoir place, be processed with chamfering and salient angle that cross section is a wedge shape respectively; Be processed with blind hole on the clockwise plane of radial direction through hole, the inner end of this blind hole is equipped with spring to the outer ring lopsidedness in it; Both ends of the spring offsets with voussoir and blind hole bottom respectively.When the motor drives inner ring of washing machine during, under the resilient force of spring, make inside and outside two curved ends of voussoir be rotated counterclockwise an angle, and break away from inside and outside circle towards (freedom) direction rotation counterclockwise.When washing machine motor drives inner ring when (locking) direction is rotated clockwise, because the rubbing action between inside and outside two end faces of voussoir and inside and outside circle, spring is compressed, inside and outside two curved ends of voussoir clockwise rotate an angle, make inside and outside two end faces of voussoir contact also stuck with inside and outside circle.

Therefore, unilateral bearing of the present utility model and the coaxial use of a common deep groove ball bearing of cover, driving washing tube by unilateral bearing of the present utility model is rotated in the forward, another set of common deep groove ball bearing drives spin dryer tube and does counterrotating, can save a cover complicated mechanical driving mechanism and an electrical equipment control, not only simplified greatly clutch structure, dwindled clutch volume, reduced cost of production, also improved stability of transmission and reliability.

(4) description of drawings

Fig. 1 is a unilateral bearing structural representation of the present utility model;

Fig. 2 is the A-A cross-sectional schematic of Fig. 1;

Fig. 3 is the local enlarged diagram of Fig. 1.

(5) embodiment

As Fig. 1, Fig. 2 and shown in Figure 3, unilateral bearing of the present utility model contains inner ring 1 and outer ring 4, and inside and outside circle 1 and 4 are equipped with retainer 5.The axial both sides of retainer 5 are provided with on the internal surface of annular cover plate 6, two annular cover plates 6 and on the retainer 5 and are processed with plush copper and counterbore accordingly, and two annular cover plates 6 are installed on the retainer 5 by these plush coppers and counterbore.Axial side at retainer 5 is equipped with 12 steel balls 7, and opposite side is processed with 12 radial direction through hole.Said steel ball 7 and radial direction through hole are staggered layout.A voussoir 2 all is housed in each radial direction through hole.Said radial direction through hole two sides along the circumferential direction is the plane, with corresponding voussoir 2 two sides, this two plane be the plane also, and make radial direction through hole and voussoir 2 corresponding two interplanars leave the gap, cooperate thereby make the two be loosening shape.Voussoir 2 both ends of the surface radially are arc shaped surface, and the radius of this two arc shaped surface matches with the interior circle radius of inside and outside circle 1 and 4 respectively.Wherein, depart from the angle in voussoir 2 centers with the sun, the specification that the big or small optical axis of this angle holds and deciding near the center of circle of that arc shaped surface of inner ring 1.

At radial direction through hole and inner circle 1 place, voussoir 2 anticlockwise those planes, be processed with chamfering and salient angle that cross section is a wedge shape respectively.Be processed with blind hole at radial direction through hole by on clockwise that plane, the inner end of blind hole is equipped with spring 3 to outer ring 4 lopsidedness in it, and the two ends of this spring offset with voussoir 2 and blind hole bottom respectively.

When dynamic drive inner ring 1 during towards counterclockwise (freedom) direction B rotation, under the resilient force of spring 3, can make two curved ends of voussoir 2 break away from inside and outside circle 1 and 4, make outer ring 4 also towards rotation counterclockwise.At this time, unilateral bearing of the present utility model only plays the effect of a cover deep groove ball bearing.When the inside and outside circle 1 of dynamic drive and 4 during towards clockwise (locking) direction C rotation, owing to 2 two curved ends of voussoir and inside and outside circle 1 and 4 s' rubbing action, spring 3 is blocked inside and outside circle 1 and 4 by voussoir 2 by compression.Thereby clockwise locking, the one-way function that is rotated counterclockwise have been realized.

Claims

1. unilateral bearing contains inner ring (1) and outer ring (4), and inside and outside circle has retainer (5) between (1 and 4); An axial side of retainer (5) is equipped with steel ball (7), and there is annular cover plate (6) the axial both sides of retainer (5); The axial opposite side that it is characterized in that retainer (5) has some radial direction through hole, and voussoir (2) is arranged in the radial direction through hole; Said radial direction through hole two sides along the circumferential direction is the plane, with the corresponding voussoir in this two plane (2) two sides also be the plane, corresponding two interplanars of radial direction through hole and voussoir (2) leave the gap; The both ends of the surface of voussoir (2) are respectively the arc shaped surface that matches with inside and outside circle (1,4), and the angle in voussoir (2) center is departed from the center of circle of the arc shaped surface of close inner ring (1) with the sun; Locate at radial direction through hole and the inner circle in the anticlockwise plane of voussoir (2) (1), be processed with chamfering and salient angle that cross section is a wedge shape respectively; Be processed with blind hole at radial direction through hole by on the clockwise plane, the inner end of blind hole is equipped with spring (3) to the outer ring lopsidedness in it; The two ends of this spring offset with voussoir (2) and blind hole bottom respectively.

2. unilateral bearing according to claim 1 is characterized in that on the internal surface of two annular cover plates (6) and is processed with plush copper and counterbore accordingly on the retainer (5) that two annular cover plates (6) are installed on the retainer (5) by these plush coppers and counterbore.