CN111853062A

CN111853062A - One-way bearing of washing machine

Info

Publication number: CN111853062A
Application number: CN202010651690.2A
Authority: CN
Inventors: 王世勇
Original assignee: Ningbo Hongye Four Zero Intelligent Technology Co Ltd
Current assignee: Ningbo Hongye Four Zero Intelligent Technology Co Ltd
Priority date: 2020-07-08
Filing date: 2020-07-08
Publication date: 2020-10-30

Abstract

The invention discloses a one-way bearing of a washing machine, which comprises a bearing outer ring, a Z-shaped frame, an inner retainer ring, a plurality of rolling bodies and a bearing inner ring, wherein a straight raceway is arranged on the bearing inner ring, the straight raceway is provided with the plurality of rolling bodies, the rolling bodies can roll along the straight raceway, the bearing outer ring and the bearing inner ring are concentrically arranged, the inner side of the bearing outer ring is provided with a limiting clamping groove, a plurality of rolling wedge blocks and a limiting inclined block, the rolling bodies are matched with the rolling wedge blocks and the limiting inclined block when rolling, the Z-shaped frame is arranged between adjacent rolling bodies, the Z-shaped frame is matched with the inner retainer; has the advantages that: the baffle is in contact with the rolling body, and the surface contact is changed into the line contact, so that the friction force of the rolling body during rotation is reduced, and the working performance of the bearing is improved; the detachable Z-shaped frame reduces the assembly difficulty, improves the production efficiency, and simultaneously ensures that the bearing can continue to rotate and be locked when the service life of the bearing reaches the limit, thereby providing sufficient maintenance time; and a rolling bearing is added, so that the rigidity of the clutch output shaft is improved.

Description

One-way bearing of washing machine

Technical Field

The invention relates to the field of bearings, in particular to a one-way bearing of a washing machine.

Background

The speed reduction clutch is one of important parts of an automatic washing machine, the speed reduction clutch ensures the starting and stopping actions of the washing machine in the washing process, the common speed reduction clutch is a one-way overrunning speed reduction clutch at present, and the core component of the current speed reduction clutch is the overrunning clutch, namely a one-way bearing special for the washing machine.

A one-way bearing, also called an overrunning clutch, is a bearing that is free to rotate in one direction and locks in the other direction. The one-way bearing in the prior art mainly comprises a metal shell, a plurality of rolling shafts, rolling needles or rolling balls are contained in the metal shell, a retainer of the one-way bearing is in a wedge shape, and meanwhile, a spring is arranged on the retainer to ensure that the rolling bodies can only roll along the direction of the retainer and generate great resistance in the other direction. The rolling element among the prior art is compacter with the rolling seat assembly when the assembly, leads to the assembly process more difficult, and the spring on the rolling seat is yielding under the atress condition simultaneously, when the rolling element wearing and tearing, causes the bearing dead inefficacy of locking easily, and then causes mechanical accident.

Disclosure of Invention

The invention provides a one-way bearing of a washing machine, aiming at the situation in the background technology, the retainer is replaced by a detachable elastic structure, the assembly difficulty is greatly reduced, the service life of the bearing is prolonged, and the bearing can provide a buffer effect when being worn.

In order to solve the technical problem, the invention is solved by the following technical scheme: the utility model provides a one-way bearing of washing machine, includes bearing inner race, Z shape frame, interior retaining ring, a plurality of rolling element and bearing inner race, be equipped with straight raceway in the bearing inner race, it is a plurality of to install on the straight raceway the rolling element, the rolling element can be followed straight raceway rolls, bearing inner race with the concentric installation of bearing inner race, bearing inner race inboard is equipped with spacing draw-in groove, a plurality of roll voussoir and spacing sloping block, the rolling element during rolling with roll voussoir and spacing sloping block cooperation, all install between the adjacent rolling element Z shape frame, Z shape frame both ends are equipped with the diving board, interior retaining ring pass through spacing draw-in groove with the bearing inner race cooperation, be equipped with spacing hole on the interior retaining ring, the diving board with spacing hole cooperation.

Preferably, still be equipped with straight board, even board and baffle on the Z shape frame, the bullet board is fixed straight board both ends, straight board both sides are connected with the arc, straight board one end is passed through the bullet board with even board one end is connected, even the board other end with the baffle is connected, the rolling element when rolling with the baffle contacts.

Preferably, the bearing outer ring is provided with an inner limiting groove and a blocking groove, outer check rings are further mounted at two ends of the bearing outer ring, and the outer surface of each outer check ring is matched with the blocking groove.

Preferably, the bearing inner ring is further provided with an arc raceway and a fixing groove, the arc raceway is provided with a plurality of balls, the balls are provided with retainers, and the fixing groove is matched with the inner surface of the outer retainer ring.

Preferably, the inner retaining ring is further provided with a limiting lug, and the limiting lug is matched with the limiting groove in the bearing outer ring.

Preferably, the minimum clearance between the rolling wedge and the bearing inner ring is smaller than the diameter of the rolling body, so that the rolling body can be locked, and the maximum clearance between the rolling wedge and the bearing inner ring is larger than the diameter of the rolling body, so that the rolling body can rotate freely.

Preferably, the clearance between the limit oblique block and the bearing inner ring is smaller than the diameter of the rolling body.

The invention has the beneficial effects that: the baffle is in contact with the rolling body, and the surface contact is changed into the line contact, so that the friction force of the rolling body during rotation is greatly reduced, and the working performance of the bearing is improved; the detachable Z-shaped frame greatly reduces the assembly difficulty of the rolling body, thereby improving the production efficiency; the arc side plates on the two sides of the baffle on the Z-shaped frame ensure that the bearing can continue to rotate and be locked when the bearing fails to reach the service life limit, thereby providing sufficient maintenance time for the machine; and the rolling bearing is added, so that the rigidity of the clutch output shaft of the washing machine is improved.

Drawings

FIG. 1 is a schematic of the present invention.

Fig. 2 is a schematic view of the internal structure of the present invention.

Fig. 3 is a front sectional view of the present invention.

FIG. 4 is a schematic view of the Z-frame of the present invention.

FIG. 5 is a schematic view of the Z-frame of the present invention in a compressed state.

Figure 6 is a schematic view of the outer ring of the present invention.

Fig. 7 is a schematic view of the inner retainer ring structure of the present invention.

Fig. 8 is a schematic view of the structure of the bearing inner ring of the invention.

In the figure: the bearing comprises a bearing outer ring 101, an outer retainer ring 102, a bearing inner ring 103, a limiting groove 104, a rolling wedge 105, a limiting inclined block 106, a limiting clamping groove 107, a retaining groove 108, an inner retainer ring 201, a limiting lug 202, a limiting hole 203, a Z-shaped frame 301, a straight plate 302, a connecting plate 303, a baffle plate 304, an elastic plate 305, an arc-shaped plate 306, balls 401, a retainer 402, an arc-shaped raceway 403, a fixing groove 404, a straight raceway 405 and a rolling body 5.

Detailed Description

The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments described herein without the need for inventive work, are within the scope of the present invention.

As shown in fig. 1-8, a one-way bearing of a washing machine comprises a bearing outer ring 101, a Z-shaped frame 301, an inner retainer ring 201 and a bearing inner ring 103, a straight raceway 405 is arranged on the bearing inner ring 103, a plurality of rolling bodies 5 are arranged on the straight raceway 405, the rolling bodies 5 can roll along the straight raceway 405, the outer bearing ring 101 is concentrically mounted with the inner bearing ring 103, the inner side of the bearing outer ring 101 is provided with a limit clamping groove 107, a plurality of rolling wedges 105 and a limit inclined block 106, the rolling bodies 5 are matched with the rolling wedge blocks 105 and the limit oblique blocks 106 when rolling, the Z-shaped frames 301 are arranged between the adjacent rolling bodies 5, elastic plates 305 are arranged at two ends of the Z-shaped frame 301, the inner retainer ring 201 is matched with the bearing outer ring 101 through a limiting clamping groove 107, the inner retainer ring 201 is provided with a limiting hole 203, and the elastic plate 305 is matched with the limiting hole 203.

Still be equipped with straight board 302, even board 303 and baffle 304 on the Z shape frame 301, bullet board 305 is fixed straight board 302 both ends, straight board 302 both sides are connected with arc 306, straight board 302 one end is passed through bullet board 305 with even board 303 one end is connected, even board 303 other end with baffle 304 is connected, rolling element 5 when rolling with baffle 304 contact.

The bearing outer ring 101 comprises an inner limiting groove 104 and a blocking groove 108, outer blocking rings 102 are further mounted at two ends of the bearing outer ring 101, and the outer surfaces of the outer blocking rings 102 are matched with the blocking groove 108.

The bearing inner ring 103 is further provided with an arc raceway 403 and a fixing groove 404, the arc raceway 403 is provided with a plurality of balls 401, the plurality of balls 401 are provided with a retainer 402, and the fixing groove 404 is matched with the inner surface of the outer retainer ring 102.

The inner retainer ring 201 is further provided with a limiting lug 202, and the limiting lug 202 is matched with the limiting groove 104 on the bearing outer ring 101.

The minimum clearance between the rolling wedge 105 and the bearing inner ring 103 is smaller than the diameter of the rolling body 5, so that the rolling body 5 can be locked, and the maximum clearance between the rolling wedge 105 and the bearing inner ring 103 is larger than the diameter of the rolling body 5, so that the rolling body 5 can rotate freely.

The clearance between the limit oblique block 106 and the bearing inner ring 103 is smaller than the diameter of the rolling body 5.

The specific working process is as follows: when the washing machine is started, the motor drives the overrunning clutch of the washing machine to work, the one-way bearing rotates along the direction of freedom at the moment, the rolling body rolls along the straight roller path to the direction of the compression Z-shaped frame, the rolling body starts to rotate after the compression Z-shaped frame reaches a certain degree because the gap between the rolling wedge block in the direction of the compression Z-shaped frame and the inner ring of the bearing is larger than the diameter of the rolling body, the rolling body continues to compress the Z-shaped frame to the position of the limiting inclined block along with the increase of output power, the gap between the limiting inclined block and the inner ring of the bearing is smaller than the diameter of the rolling body, the rolling body rotates along the inclined edge of the limiting inclined block at the; compared with the one-way bearing in the prior art, only line contact exists between rolling element and the Z shape frame this moment, and it is for prior art one-way bearing frictional force greatly reduced, and the distribution of contact is even simultaneously, and the spring cage structure in the prior art of comparing has avoided the inhomogeneous emergence card of the dead condition of emergence of spring atress, and then has improved the stability of bearing operation.

When the washing machine needs to be stopped, the one-way bearing rotates reversely, the compression of the Z-shaped frame is relieved, the rolling elements move at the position where the clearance between the rolling wedge and the inner ring of the bearing is small under the friction action of the Z-shaped frame and the inner ring and the outer ring of the bearing, the contact pressure of the rolling elements is larger and larger along with the reduction of the clearance, and the bearing is locked; compared with the wear jamming failure of the retainer, when the rolling body or the rolling wedge block fails, the rolling body can continuously move to be in contact with the baffle of the next Z-shaped frame under the elasticity of the Z-shaped frame, and the rolling body is locked by the side plates on two sides of the baffle on the next Z-shaped frame, so that the use safety of the one-way bearing is greatly improved.

Compared with the one-way bearing with the retainer, the Z-shaped frame is detachable, when the bearing is installed, the rolling bodies can be easily placed only by slightly pressing the Z-shaped frame, and the assembly process can be completed by sequentially installing the rolling bodies and the Z-shaped frame.

Because the output shaft of the washing machine clutch is longer, if a larger error occurs during assembly, the output shaft can generate larger deflection during rotation, and then the unidirectional bearing receives radial cyclic swinging load, so that the service life of the bearing is greatly reduced.

Claims

1. The utility model provides a washing machine one-way bearing, includes bearing inner race (101), Z shape frame (301), interior retaining ring (201), a plurality of rolling element (5) and bearing inner race (103), its characterized in that: a straight raceway (405) is arranged on the bearing inner ring (103), a plurality of rolling bodies (5) are arranged on the straight raceway (405), the rolling bodies (5) can roll along the straight raceway (405), the bearing outer ring (101) and the bearing inner ring (103) are concentrically arranged, the inner side of the bearing outer ring (101) is provided with a limiting clamping groove (107), a plurality of rolling wedge blocks (105) and a limiting inclined block (106), the rolling body (5) is matched with the rolling wedge block (105) and the limit oblique block (106) when rolling, the Z-shaped frame (301) is arranged between the adjacent rolling bodies (5), elastic plates (305) are arranged at two ends of the Z-shaped frame (301), the inner retainer ring (201) is matched with the bearing outer ring (101) through a limiting clamping groove (107), and a limiting hole (203) is formed in the inner check ring (201), and the elastic plate (305) is matched with the limiting hole (203).

2. A one-way bearing for a washing machine according to claim 1, wherein: still be equipped with on Z shape frame (301) straight board (302), link board (303) and baffle (304), bullet board (305) are fixed straight board (302) both ends, straight board (302) both sides are connected with arc (306), straight board (302) one end is passed through bullet board (305) with link board (303) one end is connected, link board (303) the other end with baffle (304) are connected, rolling element (5) when rolling with baffle (304) contact.

3. A one-way bearing for a washing machine according to claim 1, wherein: the bearing outer ring (101) is characterized by comprising an inner limiting groove (104) and a blocking groove (108), outer check rings (102) are further mounted at two ends of the bearing outer ring (101), and the outer surfaces of the outer check rings (102) are matched with the blocking groove (108).

4. A one-way bearing for a washing machine according to claim 1 or 3, wherein: the bearing inner ring (103) is further provided with an arc raceway (403) and a fixing groove (404), the arc raceway (403) is provided with a plurality of balls (401), the balls (401) are provided with a retainer (402), and the fixing groove (404) is matched with the inner surface of the outer retainer ring (102).

5. A one-way bearing for a washing machine according to claim 1 or 3, wherein: the inner retainer ring (201) is further provided with a limiting lug (202), and the limiting lug (202) is matched with a limiting groove (104) in the bearing outer ring (101).

6. A one-way bearing for a washing machine according to claim 1, wherein: the minimum clearance between the rolling wedge block (105) and the bearing inner ring (103) is smaller than the diameter of the rolling body (5), so that the rolling body (5) can be locked, and the maximum clearance between the rolling wedge block (105) and the bearing inner ring (103) is larger than the diameter of the rolling body (5), so that the rolling body (5) can rotate freely.

7. A one-way bearing for a washing machine according to claim 1, wherein: and the clearance between the limit inclined block (106) and the bearing inner ring (103) is smaller than the diameter of the rolling body (5).